chore: remove accidentally committed test binary

Add a warning message to inform admins that some websites may have
X-Frame-Options or CSP policies that prevent iframe embedding.

.gitignore

@@ -14,6 +14,9 @@ backend/server
 backend/sub2api
 backend/main
 
+# Go 测试二进制
+*.test
+
 # 测试覆盖率
 *.out
 coverage.html

Linux DO Connect.md

@@ -0,0 +1,368 @@
+# Linux DO Connect
+
+OAuth（Open Authorization）是一个开放的网络授权标准，目前最新版本为 OAuth 2.0。我们日常使用的第三方登录（如 Google 账号登录）就采用了该标准。OAuth 允许用户授权第三方应用访问存储在其他服务提供商（如 Google）上的信息，无需在不同平台上重复填写注册信息。用户授权后，平台可以直接访问用户的账户信息进行身份验证，而用户无需向第三方应用提供密码。
+
+目前系统已实现完整的 OAuth2 授权码（code）方式鉴权，但界面等配套功能还在持续完善中。让我们一起打造一个更完善的共享方案。
+
+## 基本介绍
+
+这是一套标准的 OAuth2 鉴权系统，可以让开发者共享论坛的用户基本信息。
+
+- 可获取字段：
+
+| 参数              | 说明                            |
+| ----------------- | ------------------------------- |
+| `id`              | 用户唯一标识（不可变）          |
+| `username`        | 论坛用户名                      |
+| `name`            | 论坛用户昵称（可变）            |
+| `avatar_template` | 用户头像模板URL（支持多种尺寸） |
+| `active`          | 账号活跃状态                    |
+| `trust_level`     | 信任等级（0-4）                 |
+| `silenced`        | 禁言状态                        |
+| `external_ids`    | 外部ID关联信息                  |
+| `api_key`         | API访问密钥                     |
+
+通过这些信息，公益网站/接口可以实现：
+
+1. 基于 `id` 的服务频率限制
+2. 基于 `trust_level` 的服务额度分配
+3. 基于用户信息的滥用举报机制
+
+## 相关端点
+
+- Authorize 端点： `https://connect.linux.do/oauth2/authorize`
+- Token 端点：`https://connect.linux.do/oauth2/token`
+- 用户信息 端点：`https://connect.linux.do/api/user`
+
+## 申请使用
+
+- 访问 [Connect.Linux.Do](https://connect.linux.do/) 申请接入你的应用。
+
+![linuxdoconnect_1](https://wiki.linux.do/_next/image?url=%2Flinuxdoconnect_1.png&w=1080&q=75)
+
+- 点击 **`我的应用接入`** - **`申请新接入`**，填写相关信息。其中 **`回调地址`** 是你的应用接收用户信息的地址。
+
+![linuxdoconnect_2](https://wiki.linux.do/_next/image?url=%2Flinuxdoconnect_2.png&w=1080&q=75)
+
+- 申请成功后，你将获得 **`Client Id`** 和 **`Client Secret`**，这是你应用的唯一身份凭证。
+
+![linuxdoconnect_3](https://wiki.linux.do/_next/image?url=%2Flinuxdoconnect_3.png&w=1080&q=75)
+
+## 接入 Linux Do
+
+JavaScript
+```JavaScript
+// 安装第三方请求库（或使用原生的 Fetch API），本例中使用 axios
+// npm install axios
+
+// 通过 OAuth2 获取 Linux Do 用户信息的参考流程
+const axios = require('axios');
+const readline = require('readline');
+
+// 配置信息（建议通过环境变量配置，避免使用硬编码）
+const CLIENT_ID = '你的 Client ID';
+const CLIENT_SECRET = '你的 Client Secret';
+const REDIRECT_URI = '你的回调地址';
+const AUTH_URL = 'https://connect.linux.do/oauth2/authorize';
+const TOKEN_URL = 'https://connect.linux.do/oauth2/token';
+const USER_INFO_URL = 'https://connect.linux.do/api/user';
+
+// 第一步：生成授权 URL
+function getAuthUrl() {
+  const params = new URLSearchParams({
+    client_id: CLIENT_ID,
+    redirect_uri: REDIRECT_URI,
+    response_type: 'code',
+    scope: 'user'
+  });
+
+  return `${AUTH_URL}?${params.toString()}`;
+}
+
+// 第二步：获取 code 参数
+function getCode() {
+  return new Promise((resolve) => {
+    // 本例中使用终端输入来模拟流程，仅供本地测试
+    // 请在实际应用中替换为真实的处理逻辑
+    const rl = readline.createInterface({ input: process.stdin, output: process.stdout });
+    rl.question('从回调 URL 中提取出 code，粘贴到此处并按回车：', (answer) => {
+      rl.close();
+      resolve(answer.trim());
+    });
+  });
+}
+
+// 第三步：使用 code 参数获取访问令牌
+async function getAccessToken(code) {
+  try {
+    const form = new URLSearchParams({
+      client_id: CLIENT_ID,
+      client_secret: CLIENT_SECRET,
+      code: code,
+      redirect_uri: REDIRECT_URI,
+      grant_type: 'authorization_code'
+    }).toString();
+
+    const response = await axios.post(TOKEN_URL, form, {
+      // 提醒：需正确配置请求头，否则无法正常获取访问令牌
+      headers: {
+        'Content-Type': 'application/x-www-form-urlencoded',
+        'Accept': 'application/json'
+      }
+    });
+
+    return response.data;
+  } catch (error) {
+    console.error(`获取访问令牌失败：${error.response ? JSON.stringify(error.response.data) : error.message}`);
+    throw error;
+  }
+}
+
+// 第四步：使用访问令牌获取用户信息
+async function getUserInfo(accessToken) {
+  try {
+    const response = await axios.get(USER_INFO_URL, {
+      headers: {
+        Authorization: `Bearer ${accessToken}`
+      }
+    });
+
+    return response.data;
+  } catch (error) {
+    console.error(`获取用户信息失败：${error.response ? JSON.stringify(error.response.data) : error.message}`);
+    throw error;
+  }
+}
+
+// 主流程
+async function main() {
+  // 1. 生成授权 URL，前端引导用户访问授权页
+  const authUrl = getAuthUrl();
+  console.log(`请访问此 URL 授权：${authUrl}
+`);
+
+  // 2. 用户授权后，从回调 URL 获取 code 参数
+  const code = await getCode();
+
+  try {
+    // 3. 使用 code 参数获取访问令牌
+    const tokenData = await getAccessToken(code);
+    const accessToken = tokenData.access_token;
+
+    // 4. 使用访问令牌获取用户信息
+    if (accessToken) {
+      const userInfo = await getUserInfo(accessToken);
+      console.log(`
+获取用户信息成功：${JSON.stringify(userInfo, null, 2)}`);
+    } else {
+      console.log(`
+获取访问令牌失败：${JSON.stringify(tokenData)}`);
+    }
+  } catch (error) {
+    console.error('发生错误：', error);
+  }
+}
+```
+Python
+```python
+# 安装第三方请求库，本例中使用 requests
+# pip install requests
+
+# 通过 OAuth2 获取 Linux Do 用户信息的参考流程
+import requests
+import json
+
+# 配置信息（建议通过环境变量配置，避免使用硬编码）
+CLIENT_ID = '你的 Client ID'
+CLIENT_SECRET = '你的 Client Secret'
+REDIRECT_URI = '你的回调地址'
+AUTH_URL = 'https://connect.linux.do/oauth2/authorize'
+TOKEN_URL = 'https://connect.linux.do/oauth2/token'
+USER_INFO_URL = 'https://connect.linux.do/api/user'
+
+# 第一步：生成授权 URL
+def get_auth_url():
+    params = {
+        'client_id': CLIENT_ID,
+        'redirect_uri': REDIRECT_URI,
+        'response_type': 'code',
+        'scope': 'user'
+    }
+    auth_url = f"{AUTH_URL}?{'&'.join(f'{k}={v}' for k, v in params.items())}"
+    return auth_url
+
+# 第二步：获取 code 参数
+def get_code():
+    # 本例中使用终端输入来模拟流程，仅供本地测试
+    # 请在实际应用中替换为真实的处理逻辑
+    return input('从回调 URL 中提取出 code，粘贴到此处并按回车：').strip()
+
+# 第三步：使用 code 参数获取访问令牌
+def get_access_token(code):
+    try:
+        data = {
+            'client_id': CLIENT_ID,
+            'client_secret': CLIENT_SECRET,
+            'code': code,
+            'redirect_uri': REDIRECT_URI,
+            'grant_type': 'authorization_code'
+        }
+        # 提醒：需正确配置请求头，否则无法正常获取访问令牌
+        headers = {
+            'Content-Type': 'application/x-www-form-urlencoded',
+            'Accept': 'application/json'
+        }
+        response = requests.post(TOKEN_URL, data=data, headers=headers)
+        response.raise_for_status()
+        return response.json()
+    except requests.exceptions.RequestException as e:
+        print(f"获取访问令牌失败：{e}")
+        return None
+
+# 第四步：使用访问令牌获取用户信息
+def get_user_info(access_token):
+    try:
+        headers = {
+            'Authorization': f'Bearer {access_token}'
+        }
+        response = requests.get(USER_INFO_URL, headers=headers)
+        response.raise_for_status()
+        return response.json()
+    except requests.exceptions.RequestException as e:
+        print(f"获取用户信息失败：{e}")
+        return None
+
+# 主流程
+if __name__ == '__main__':
+    # 1. 生成授权 URL，前端引导用户访问授权页
+    auth_url = get_auth_url()
+    print(f'请访问此 URL 授权：{auth_url}
+')
+
+    # 2. 用户授权后，从回调 URL 获取 code 参数
+    code = get_code()
+
+    # 3. 使用 code 参数获取访问令牌
+    token_data = get_access_token(code)
+    if token_data:
+        access_token = token_data.get('access_token')
+
+        # 4. 使用访问令牌获取用户信息
+        if access_token:
+            user_info = get_user_info(access_token)
+            if user_info:
+                print(f"
+获取用户信息成功：{json.dumps(user_info, indent=2)}")
+            else:
+                print("
+获取用户信息失败")
+        else:
+            print(f"
+获取访问令牌失败：{json.dumps(token_data, indent=2)}")
+    else:
+        print("
+获取访问令牌失败")
+```
+PHP
+```php
+// 通过 OAuth2 获取 Linux Do 用户信息的参考流程
+
+// 配置信息
+$CLIENT_ID = '你的 Client ID';
+$CLIENT_SECRET = '你的 Client Secret';
+$REDIRECT_URI = '你的回调地址';
+$AUTH_URL = 'https://connect.linux.do/oauth2/authorize';
+$TOKEN_URL = 'https://connect.linux.do/oauth2/token';
+$USER_INFO_URL = 'https://connect.linux.do/api/user';
+
+// 生成授权 URL
+function getAuthUrl($clientId, $redirectUri) {
+    global $AUTH_URL;
+    return $AUTH_URL . '?' . http_build_query([
+        'client_id' => $clientId,
+        'redirect_uri' => $redirectUri,
+        'response_type' => 'code',
+        'scope' => 'user'
+    ]);
+}
+
+// 使用 code 参数获取用户信息（合并获取令牌和获取用户信息的步骤）
+function getUserInfoWithCode($code, $clientId, $clientSecret, $redirectUri) {
+    global $TOKEN_URL, $USER_INFO_URL;
+
+    // 1. 获取访问令牌
+    $ch = curl_init($TOKEN_URL);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($ch, CURLOPT_POST, true);
+    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
+        'client_id' => $clientId,
+        'client_secret' => $clientSecret,
+        'code' => $code,
+        'redirect_uri' => $redirectUri,
+        'grant_type' => 'authorization_code'
+    ]));
+    curl_setopt($ch, CURLOPT_HTTPHEADER, [
+        'Content-Type: application/x-www-form-urlencoded',
+        'Accept: application/json'
+    ]);
+
+    $tokenResponse = curl_exec($ch);
+    curl_close($ch);
+
+    $tokenData = json_decode($tokenResponse, true);
+    if (!isset($tokenData['access_token'])) {
+        return ['error' => '获取访问令牌失败', 'details' => $tokenData];
+    }
+
+    // 2. 获取用户信息
+    $ch = curl_init($USER_INFO_URL);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($ch, CURLOPT_HTTPHEADER, [
+        'Authorization: Bearer ' . $tokenData['access_token']
+    ]);
+
+    $userResponse = curl_exec($ch);
+    curl_close($ch);
+
+    return json_decode($userResponse, true);
+}
+
+// 主流程
+// 1. 生成授权 URL
+$authUrl = getAuthUrl($CLIENT_ID, $REDIRECT_URI);
+echo "<a href='$authUrl'>使用 Linux Do 登录</a>";
+
+// 2. 处理回调并获取用户信息
+if (isset($_GET['code'])) {
+    $userInfo = getUserInfoWithCode(
+        $_GET['code'],
+        $CLIENT_ID,
+        $CLIENT_SECRET,
+        $REDIRECT_URI
+    );
+
+    if (isset($userInfo['error'])) {
+        echo '错误: ' . $userInfo['error'];
+    } else {
+        echo '欢迎, ' . $userInfo['name'] . '!';
+        // 处理用户登录逻辑...
+    }
+}
+```
+
+## 使用说明
+
+### 授权流程
+
+1. 用户点击应用中的’使用 Linux Do 登录’按钮
+2. 系统将用户重定向至 Linux Do 的授权页面
+3. 用户完成授权后，系统自动重定向回应用并携带授权码
+4. 应用使用授权码获取访问令牌
+5. 使用访问令牌获取用户信息
+
+### 安全建议
+
+- 切勿在前端代码中暴露 Client Secret
+- 对所有用户输入数据进行严格验证
+- 确保使用 HTTPS 协议传输数据
+- 定期更新并妥善保管 Client Secret

backend/cmd/jwtgen/main.go

@@ -33,7 +33,7 @@ func main() {
 	}()
 
 	userRepo := repository.NewUserRepository(client, sqlDB)
-	authService := service.NewAuthService(userRepo, cfg, nil, nil, nil, nil)
+	authService := service.NewAuthService(userRepo, cfg, nil, nil, nil, nil, nil)
 
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()

backend/cmd/server/VERSION

@@ -1 +1 @@
-0.1.1
+0.1.46

backend/cmd/server/wire_gen.go

@@ -51,13 +51,17 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	turnstileVerifier := repository.NewTurnstileVerifier()
 	turnstileService := service.NewTurnstileService(settingService, turnstileVerifier)
 	emailQueueService := service.ProvideEmailQueueService(emailService)
-	authService := service.NewAuthService(userRepository, configConfig, settingService, emailService, turnstileService, emailQueueService)
+	promoCodeRepository := repository.NewPromoCodeRepository(client)
+	billingCache := repository.NewBillingCache(redisClient)
+	userSubscriptionRepository := repository.NewUserSubscriptionRepository(client)
+	billingCacheService := service.NewBillingCacheService(billingCache, userRepository, userSubscriptionRepository, configConfig)
+	promoService := service.NewPromoService(promoCodeRepository, userRepository, billingCacheService, client)
+	authService := service.NewAuthService(userRepository, configConfig, settingService, emailService, turnstileService, emailQueueService, promoService)
 	userService := service.NewUserService(userRepository)
-	authHandler := handler.NewAuthHandler(configConfig, authService, userService)
+	authHandler := handler.NewAuthHandler(configConfig, authService, userService, settingService, promoService)
 	userHandler := handler.NewUserHandler(userService)
 	apiKeyRepository := repository.NewAPIKeyRepository(client)
 	groupRepository := repository.NewGroupRepository(client, db)
-	userSubscriptionRepository := repository.NewUserSubscriptionRepository(client)
 	apiKeyCache := repository.NewAPIKeyCache(redisClient)
 	apiKeyService := service.NewAPIKeyService(apiKeyRepository, userRepository, groupRepository, userSubscriptionRepository, apiKeyCache, configConfig)
 	apiKeyHandler := handler.NewAPIKeyHandler(apiKeyService)
@@ -65,8 +69,6 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	usageService := service.NewUsageService(usageLogRepository, userRepository, client)
 	usageHandler := handler.NewUsageHandler(usageService, apiKeyService)
 	redeemCodeRepository := repository.NewRedeemCodeRepository(client)
-	billingCache := repository.NewBillingCache(redisClient)
-	billingCacheService := service.NewBillingCacheService(billingCache, userRepository, userSubscriptionRepository, configConfig)
 	subscriptionService := service.NewSubscriptionService(groupRepository, userSubscriptionRepository, billingCacheService)
 	redeemCache := repository.NewRedeemCache(redisClient)
 	redeemService := service.NewRedeemService(redeemCodeRepository, userRepository, subscriptionService, redeemCache, billingCacheService, client)
@@ -112,6 +114,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	antigravityOAuthHandler := admin.NewAntigravityOAuthHandler(antigravityOAuthService)
 	proxyHandler := admin.NewProxyHandler(adminService)
 	adminRedeemHandler := admin.NewRedeemHandler(adminService)
+	promoHandler := admin.NewPromoHandler(promoService)
 	settingHandler := admin.NewSettingHandler(settingService, emailService, turnstileService)
 	updateCache := repository.NewUpdateCache(redisClient)
 	gitHubReleaseClient := repository.ProvideGitHubReleaseClient(configConfig)
@@ -124,7 +127,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	userAttributeValueRepository := repository.NewUserAttributeValueRepository(client)
 	userAttributeService := service.NewUserAttributeService(userAttributeDefinitionRepository, userAttributeValueRepository)
 	userAttributeHandler := admin.NewUserAttributeHandler(userAttributeService)
-	adminHandlers := handler.ProvideAdminHandlers(dashboardHandler, adminUserHandler, groupHandler, accountHandler, oAuthHandler, openAIOAuthHandler, geminiOAuthHandler, antigravityOAuthHandler, proxyHandler, adminRedeemHandler, settingHandler, systemHandler, adminSubscriptionHandler, adminUsageHandler, userAttributeHandler)
+	adminHandlers := handler.ProvideAdminHandlers(dashboardHandler, adminUserHandler, groupHandler, accountHandler, oAuthHandler, openAIOAuthHandler, geminiOAuthHandler, antigravityOAuthHandler, proxyHandler, adminRedeemHandler, promoHandler, settingHandler, systemHandler, adminSubscriptionHandler, adminUsageHandler, userAttributeHandler)
 	pricingRemoteClient := repository.ProvidePricingRemoteClient(configConfig)
 	pricingService, err := service.ProvidePricingService(configConfig, pricingRemoteClient)
 	if err != nil {
@@ -145,7 +148,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	jwtAuthMiddleware := middleware.NewJWTAuthMiddleware(authService, userService)
 	adminAuthMiddleware := middleware.NewAdminAuthMiddleware(authService, userService, settingService)
 	apiKeyAuthMiddleware := middleware.NewAPIKeyAuthMiddleware(apiKeyService, subscriptionService, configConfig)
-	engine := server.ProvideRouter(configConfig, handlers, jwtAuthMiddleware, adminAuthMiddleware, apiKeyAuthMiddleware, apiKeyService, subscriptionService)
+	engine := server.ProvideRouter(configConfig, handlers, jwtAuthMiddleware, adminAuthMiddleware, apiKeyAuthMiddleware, apiKeyService, subscriptionService, settingService, redisClient)
 	httpServer := server.ProvideHTTPServer(configConfig, engine)
 	tokenRefreshService := service.ProvideTokenRefreshService(accountRepository, oAuthService, openAIOAuthService, geminiOAuthService, antigravityOAuthService, configConfig)
 	accountExpiryService := service.ProvideAccountExpiryService(accountRepository)

backend/ent/account_query.go

@@ -9,6 +9,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -31,6 +32,7 @@ type AccountQuery struct {
 	withProxy         *ProxyQuery
 	withUsageLogs     *UsageLogQuery
 	withAccountGroups *AccountGroupQuery
+	modifiers         []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -495,6 +497,9 @@ func (_q *AccountQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Acco
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -690,6 +695,9 @@ func (_q *AccountQuery) loadAccountGroups(ctx context.Context, query *AccountGro
 
 func (_q *AccountQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -755,6 +763,9 @@ func (_q *AccountQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -772,6 +783,32 @@ func (_q *AccountQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *AccountQuery) ForUpdate(opts ...sql.LockOption) *AccountQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *AccountQuery) ForShare(opts ...sql.LockOption) *AccountQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // AccountGroupBy is the group-by builder for Account entities.
 type AccountGroupBy struct {
 	selector

backend/ent/accountgroup_query.go

@@ -8,6 +8,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"github.com/Wei-Shaw/sub2api/ent/account"
@@ -25,6 +26,7 @@ type AccountGroupQuery struct {
 	predicates  []predicate.AccountGroup
 	withAccount *AccountQuery
 	withGroup   *GroupQuery
+	modifiers   []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -347,6 +349,9 @@ func (_q *AccountGroupQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -432,6 +437,9 @@ func (_q *AccountGroupQuery) loadGroup(ctx context.Context, query *GroupQuery, n
 
 func (_q *AccountGroupQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Unique = false
 	_spec.Node.Columns = nil
 	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
@@ -495,6 +503,9 @@ func (_q *AccountGroupQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -512,6 +523,32 @@ func (_q *AccountGroupQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *AccountGroupQuery) ForUpdate(opts ...sql.LockOption) *AccountGroupQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *AccountGroupQuery) ForShare(opts ...sql.LockOption) *AccountGroupQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // AccountGroupGroupBy is the group-by builder for AccountGroup entities.
 type AccountGroupGroupBy struct {
 	selector

backend/ent/apikey.go

@@ -3,6 +3,7 @@
 package ent
 
 import (
+	"encoding/json"
 	"fmt"
 	"strings"
 	"time"
@@ -35,6 +36,10 @@ type APIKey struct {
 	GroupID *int64 `json:"group_id,omitempty"`
 	// Status holds the value of the "status" field.
 	Status string `json:"status,omitempty"`
+	// Allowed IPs/CIDRs, e.g. ["192.168.1.100", "10.0.0.0/8"]
+	IPWhitelist []string `json:"ip_whitelist,omitempty"`
+	// Blocked IPs/CIDRs
+	IPBlacklist []string `json:"ip_blacklist,omitempty"`
 	// Edges holds the relations/edges for other nodes in the graph.
 	// The values are being populated by the APIKeyQuery when eager-loading is set.
 	Edges        APIKeyEdges `json:"edges"`
@@ -90,6 +95,8 @@ func (*APIKey) scanValues(columns []string) ([]any, error) {
 	values := make([]any, len(columns))
 	for i := range columns {
 		switch columns[i] {
+		case apikey.FieldIPWhitelist, apikey.FieldIPBlacklist:
+			values[i] = new([]byte)
 		case apikey.FieldID, apikey.FieldUserID, apikey.FieldGroupID:
 			values[i] = new(sql.NullInt64)
 		case apikey.FieldKey, apikey.FieldName, apikey.FieldStatus:
@@ -167,6 +174,22 @@ func (_m *APIKey) assignValues(columns []string, values []any) error {
 			} else if value.Valid {
 				_m.Status = value.String
 			}
+		case apikey.FieldIPWhitelist:
+			if value, ok := values[i].(*[]byte); !ok {
+				return fmt.Errorf("unexpected type %T for field ip_whitelist", values[i])
+			} else if value != nil && len(*value) > 0 {
+				if err := json.Unmarshal(*value, &_m.IPWhitelist); err != nil {
+					return fmt.Errorf("unmarshal field ip_whitelist: %w", err)
+				}
+			}
+		case apikey.FieldIPBlacklist:
+			if value, ok := values[i].(*[]byte); !ok {
+				return fmt.Errorf("unexpected type %T for field ip_blacklist", values[i])
+			} else if value != nil && len(*value) > 0 {
+				if err := json.Unmarshal(*value, &_m.IPBlacklist); err != nil {
+					return fmt.Errorf("unmarshal field ip_blacklist: %w", err)
+				}
+			}
 		default:
 			_m.selectValues.Set(columns[i], values[i])
 		}
@@ -245,6 +268,12 @@ func (_m *APIKey) String() string {
 	builder.WriteString(", ")
 	builder.WriteString("status=")
 	builder.WriteString(_m.Status)
+	builder.WriteString(", ")
+	builder.WriteString("ip_whitelist=")
+	builder.WriteString(fmt.Sprintf("%v", _m.IPWhitelist))
+	builder.WriteString(", ")
+	builder.WriteString("ip_blacklist=")
+	builder.WriteString(fmt.Sprintf("%v", _m.IPBlacklist))
 	builder.WriteByte(')')
 	return builder.String()
 }

backend/ent/apikey/apikey.go

@@ -31,6 +31,10 @@ const (
 	FieldGroupID = "group_id"
 	// FieldStatus holds the string denoting the status field in the database.
 	FieldStatus = "status"
+	// FieldIPWhitelist holds the string denoting the ip_whitelist field in the database.
+	FieldIPWhitelist = "ip_whitelist"
+	// FieldIPBlacklist holds the string denoting the ip_blacklist field in the database.
+	FieldIPBlacklist = "ip_blacklist"
 	// EdgeUser holds the string denoting the user edge name in mutations.
 	EdgeUser = "user"
 	// EdgeGroup holds the string denoting the group edge name in mutations.
@@ -73,6 +77,8 @@ var Columns = []string{
 	FieldName,
 	FieldGroupID,
 	FieldStatus,
+	FieldIPWhitelist,
+	FieldIPBlacklist,
 }
 
 // ValidColumn reports if the column name is valid (part of the table columns).

backend/ent/apikey/where.go

@@ -470,6 +470,26 @@ func StatusContainsFold(v string) predicate.APIKey {
 	return predicate.APIKey(sql.FieldContainsFold(FieldStatus, v))
 }
 
+// IPWhitelistIsNil applies the IsNil predicate on the "ip_whitelist" field.
+func IPWhitelistIsNil() predicate.APIKey {
+	return predicate.APIKey(sql.FieldIsNull(FieldIPWhitelist))
+}
+
+// IPWhitelistNotNil applies the NotNil predicate on the "ip_whitelist" field.
+func IPWhitelistNotNil() predicate.APIKey {
+	return predicate.APIKey(sql.FieldNotNull(FieldIPWhitelist))
+}
+
+// IPBlacklistIsNil applies the IsNil predicate on the "ip_blacklist" field.
+func IPBlacklistIsNil() predicate.APIKey {
+	return predicate.APIKey(sql.FieldIsNull(FieldIPBlacklist))
+}
+
+// IPBlacklistNotNil applies the NotNil predicate on the "ip_blacklist" field.
+func IPBlacklistNotNil() predicate.APIKey {
+	return predicate.APIKey(sql.FieldNotNull(FieldIPBlacklist))
+}
+
 // HasUser applies the HasEdge predicate on the "user" edge.
 func HasUser() predicate.APIKey {
 	return predicate.APIKey(func(s *sql.Selector) {

backend/ent/apikey_create.go

@@ -113,6 +113,18 @@ func (_c *APIKeyCreate) SetNillableStatus(v *string) *APIKeyCreate {
 	return _c
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (_c *APIKeyCreate) SetIPWhitelist(v []string) *APIKeyCreate {
+	_c.mutation.SetIPWhitelist(v)
+	return _c
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (_c *APIKeyCreate) SetIPBlacklist(v []string) *APIKeyCreate {
+	_c.mutation.SetIPBlacklist(v)
+	return _c
+}
+
 // SetUser sets the "user" edge to the User entity.
 func (_c *APIKeyCreate) SetUser(v *User) *APIKeyCreate {
 	return _c.SetUserID(v.ID)
@@ -285,6 +297,14 @@ func (_c *APIKeyCreate) createSpec() (*APIKey, *sqlgraph.CreateSpec) {
 		_spec.SetField(apikey.FieldStatus, field.TypeString, value)
 		_node.Status = value
 	}
+	if value, ok := _c.mutation.IPWhitelist(); ok {
+		_spec.SetField(apikey.FieldIPWhitelist, field.TypeJSON, value)
+		_node.IPWhitelist = value
+	}
+	if value, ok := _c.mutation.IPBlacklist(); ok {
+		_spec.SetField(apikey.FieldIPBlacklist, field.TypeJSON, value)
+		_node.IPBlacklist = value
+	}
 	if nodes := _c.mutation.UserIDs(); len(nodes) > 0 {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.M2O,
@@ -483,6 +503,42 @@ func (u *APIKeyUpsert) UpdateStatus() *APIKeyUpsert {
 	return u
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (u *APIKeyUpsert) SetIPWhitelist(v []string) *APIKeyUpsert {
+	u.Set(apikey.FieldIPWhitelist, v)
+	return u
+}
+
+// UpdateIPWhitelist sets the "ip_whitelist" field to the value that was provided on create.
+func (u *APIKeyUpsert) UpdateIPWhitelist() *APIKeyUpsert {
+	u.SetExcluded(apikey.FieldIPWhitelist)
+	return u
+}
+
+// ClearIPWhitelist clears the value of the "ip_whitelist" field.
+func (u *APIKeyUpsert) ClearIPWhitelist() *APIKeyUpsert {
+	u.SetNull(apikey.FieldIPWhitelist)
+	return u
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (u *APIKeyUpsert) SetIPBlacklist(v []string) *APIKeyUpsert {
+	u.Set(apikey.FieldIPBlacklist, v)
+	return u
+}
+
+// UpdateIPBlacklist sets the "ip_blacklist" field to the value that was provided on create.
+func (u *APIKeyUpsert) UpdateIPBlacklist() *APIKeyUpsert {
+	u.SetExcluded(apikey.FieldIPBlacklist)
+	return u
+}
+
+// ClearIPBlacklist clears the value of the "ip_blacklist" field.
+func (u *APIKeyUpsert) ClearIPBlacklist() *APIKeyUpsert {
+	u.SetNull(apikey.FieldIPBlacklist)
+	return u
+}
+
 // UpdateNewValues updates the mutable fields using the new values that were set on create.
 // Using this option is equivalent to using:
 //
@@ -640,6 +696,48 @@ func (u *APIKeyUpsertOne) UpdateStatus() *APIKeyUpsertOne {
 	})
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (u *APIKeyUpsertOne) SetIPWhitelist(v []string) *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.SetIPWhitelist(v)
+	})
+}
+
+// UpdateIPWhitelist sets the "ip_whitelist" field to the value that was provided on create.
+func (u *APIKeyUpsertOne) UpdateIPWhitelist() *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.UpdateIPWhitelist()
+	})
+}
+
+// ClearIPWhitelist clears the value of the "ip_whitelist" field.
+func (u *APIKeyUpsertOne) ClearIPWhitelist() *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.ClearIPWhitelist()
+	})
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (u *APIKeyUpsertOne) SetIPBlacklist(v []string) *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.SetIPBlacklist(v)
+	})
+}
+
+// UpdateIPBlacklist sets the "ip_blacklist" field to the value that was provided on create.
+func (u *APIKeyUpsertOne) UpdateIPBlacklist() *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.UpdateIPBlacklist()
+	})
+}
+
+// ClearIPBlacklist clears the value of the "ip_blacklist" field.
+func (u *APIKeyUpsertOne) ClearIPBlacklist() *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.ClearIPBlacklist()
+	})
+}
+
 // Exec executes the query.
 func (u *APIKeyUpsertOne) Exec(ctx context.Context) error {
 	if len(u.create.conflict) == 0 {
@@ -963,6 +1061,48 @@ func (u *APIKeyUpsertBulk) UpdateStatus() *APIKeyUpsertBulk {
 	})
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (u *APIKeyUpsertBulk) SetIPWhitelist(v []string) *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.SetIPWhitelist(v)
+	})
+}
+
+// UpdateIPWhitelist sets the "ip_whitelist" field to the value that was provided on create.
+func (u *APIKeyUpsertBulk) UpdateIPWhitelist() *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.UpdateIPWhitelist()
+	})
+}
+
+// ClearIPWhitelist clears the value of the "ip_whitelist" field.
+func (u *APIKeyUpsertBulk) ClearIPWhitelist() *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.ClearIPWhitelist()
+	})
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (u *APIKeyUpsertBulk) SetIPBlacklist(v []string) *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.SetIPBlacklist(v)
+	})
+}
+
+// UpdateIPBlacklist sets the "ip_blacklist" field to the value that was provided on create.
+func (u *APIKeyUpsertBulk) UpdateIPBlacklist() *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.UpdateIPBlacklist()
+	})
+}
+
+// ClearIPBlacklist clears the value of the "ip_blacklist" field.
+func (u *APIKeyUpsertBulk) ClearIPBlacklist() *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.ClearIPBlacklist()
+	})
+}
+
 // Exec executes the query.
 func (u *APIKeyUpsertBulk) Exec(ctx context.Context) error {
 	if u.create.err != nil {

backend/ent/apikey_query.go

@@ -9,6 +9,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -29,6 +30,7 @@ type APIKeyQuery struct {
 	withUser      *UserQuery
 	withGroup     *GroupQuery
 	withUsageLogs *UsageLogQuery
+	modifiers     []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -458,6 +460,9 @@ func (_q *APIKeyQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*APIKe
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -583,6 +588,9 @@ func (_q *APIKeyQuery) loadUsageLogs(ctx context.Context, query *UsageLogQuery,
 
 func (_q *APIKeyQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -651,6 +659,9 @@ func (_q *APIKeyQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -668,6 +679,32 @@ func (_q *APIKeyQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *APIKeyQuery) ForUpdate(opts ...sql.LockOption) *APIKeyQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *APIKeyQuery) ForShare(opts ...sql.LockOption) *APIKeyQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // APIKeyGroupBy is the group-by builder for APIKey entities.
 type APIKeyGroupBy struct {
 	selector

backend/ent/apikey_update.go

@@ -10,6 +10,7 @@ import (
 
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/dialect/sql/sqljson"
 	"entgo.io/ent/schema/field"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
 	"github.com/Wei-Shaw/sub2api/ent/group"
@@ -133,6 +134,42 @@ func (_u *APIKeyUpdate) SetNillableStatus(v *string) *APIKeyUpdate {
 	return _u
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (_u *APIKeyUpdate) SetIPWhitelist(v []string) *APIKeyUpdate {
+	_u.mutation.SetIPWhitelist(v)
+	return _u
+}
+
+// AppendIPWhitelist appends value to the "ip_whitelist" field.
+func (_u *APIKeyUpdate) AppendIPWhitelist(v []string) *APIKeyUpdate {
+	_u.mutation.AppendIPWhitelist(v)
+	return _u
+}
+
+// ClearIPWhitelist clears the value of the "ip_whitelist" field.
+func (_u *APIKeyUpdate) ClearIPWhitelist() *APIKeyUpdate {
+	_u.mutation.ClearIPWhitelist()
+	return _u
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (_u *APIKeyUpdate) SetIPBlacklist(v []string) *APIKeyUpdate {
+	_u.mutation.SetIPBlacklist(v)
+	return _u
+}
+
+// AppendIPBlacklist appends value to the "ip_blacklist" field.
+func (_u *APIKeyUpdate) AppendIPBlacklist(v []string) *APIKeyUpdate {
+	_u.mutation.AppendIPBlacklist(v)
+	return _u
+}
+
+// ClearIPBlacklist clears the value of the "ip_blacklist" field.
+func (_u *APIKeyUpdate) ClearIPBlacklist() *APIKeyUpdate {
+	_u.mutation.ClearIPBlacklist()
+	return _u
+}
+
 // SetUser sets the "user" edge to the User entity.
 func (_u *APIKeyUpdate) SetUser(v *User) *APIKeyUpdate {
 	return _u.SetUserID(v.ID)
@@ -291,6 +328,28 @@ func (_u *APIKeyUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if value, ok := _u.mutation.Status(); ok {
 		_spec.SetField(apikey.FieldStatus, field.TypeString, value)
 	}
+	if value, ok := _u.mutation.IPWhitelist(); ok {
+		_spec.SetField(apikey.FieldIPWhitelist, field.TypeJSON, value)
+	}
+	if value, ok := _u.mutation.AppendedIPWhitelist(); ok {
+		_spec.AddModifier(func(u *sql.UpdateBuilder) {
+			sqljson.Append(u, apikey.FieldIPWhitelist, value)
+		})
+	}
+	if _u.mutation.IPWhitelistCleared() {
+		_spec.ClearField(apikey.FieldIPWhitelist, field.TypeJSON)
+	}
+	if value, ok := _u.mutation.IPBlacklist(); ok {
+		_spec.SetField(apikey.FieldIPBlacklist, field.TypeJSON, value)
+	}
+	if value, ok := _u.mutation.AppendedIPBlacklist(); ok {
+		_spec.AddModifier(func(u *sql.UpdateBuilder) {
+			sqljson.Append(u, apikey.FieldIPBlacklist, value)
+		})
+	}
+	if _u.mutation.IPBlacklistCleared() {
+		_spec.ClearField(apikey.FieldIPBlacklist, field.TypeJSON)
+	}
 	if _u.mutation.UserCleared() {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.M2O,
@@ -516,6 +575,42 @@ func (_u *APIKeyUpdateOne) SetNillableStatus(v *string) *APIKeyUpdateOne {
 	return _u
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (_u *APIKeyUpdateOne) SetIPWhitelist(v []string) *APIKeyUpdateOne {
+	_u.mutation.SetIPWhitelist(v)
+	return _u
+}
+
+// AppendIPWhitelist appends value to the "ip_whitelist" field.
+func (_u *APIKeyUpdateOne) AppendIPWhitelist(v []string) *APIKeyUpdateOne {
+	_u.mutation.AppendIPWhitelist(v)
+	return _u
+}
+
+// ClearIPWhitelist clears the value of the "ip_whitelist" field.
+func (_u *APIKeyUpdateOne) ClearIPWhitelist() *APIKeyUpdateOne {
+	_u.mutation.ClearIPWhitelist()
+	return _u
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (_u *APIKeyUpdateOne) SetIPBlacklist(v []string) *APIKeyUpdateOne {
+	_u.mutation.SetIPBlacklist(v)
+	return _u
+}
+
+// AppendIPBlacklist appends value to the "ip_blacklist" field.
+func (_u *APIKeyUpdateOne) AppendIPBlacklist(v []string) *APIKeyUpdateOne {
+	_u.mutation.AppendIPBlacklist(v)
+	return _u
+}
+
+// ClearIPBlacklist clears the value of the "ip_blacklist" field.
+func (_u *APIKeyUpdateOne) ClearIPBlacklist() *APIKeyUpdateOne {
+	_u.mutation.ClearIPBlacklist()
+	return _u
+}
+
 // SetUser sets the "user" edge to the User entity.
 func (_u *APIKeyUpdateOne) SetUser(v *User) *APIKeyUpdateOne {
 	return _u.SetUserID(v.ID)
@@ -704,6 +799,28 @@ func (_u *APIKeyUpdateOne) sqlSave(ctx context.Context) (_node *APIKey, err erro
 	if value, ok := _u.mutation.Status(); ok {
 		_spec.SetField(apikey.FieldStatus, field.TypeString, value)
 	}
+	if value, ok := _u.mutation.IPWhitelist(); ok {
+		_spec.SetField(apikey.FieldIPWhitelist, field.TypeJSON, value)
+	}
+	if value, ok := _u.mutation.AppendedIPWhitelist(); ok {
+		_spec.AddModifier(func(u *sql.UpdateBuilder) {
+			sqljson.Append(u, apikey.FieldIPWhitelist, value)
+		})
+	}
+	if _u.mutation.IPWhitelistCleared() {
+		_spec.ClearField(apikey.FieldIPWhitelist, field.TypeJSON)
+	}
+	if value, ok := _u.mutation.IPBlacklist(); ok {
+		_spec.SetField(apikey.FieldIPBlacklist, field.TypeJSON, value)
+	}
+	if value, ok := _u.mutation.AppendedIPBlacklist(); ok {
+		_spec.AddModifier(func(u *sql.UpdateBuilder) {
+			sqljson.Append(u, apikey.FieldIPBlacklist, value)
+		})
+	}
+	if _u.mutation.IPBlacklistCleared() {
+		_spec.ClearField(apikey.FieldIPBlacklist, field.TypeJSON)
+	}
 	if _u.mutation.UserCleared() {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.M2O,

backend/ent/client.go

@@ -19,6 +19,8 @@ import (
 	"github.com/Wei-Shaw/sub2api/ent/accountgroup"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
 	"github.com/Wei-Shaw/sub2api/ent/group"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
 	"github.com/Wei-Shaw/sub2api/ent/proxy"
 	"github.com/Wei-Shaw/sub2api/ent/redeemcode"
 	"github.com/Wei-Shaw/sub2api/ent/setting"
@@ -45,6 +47,10 @@ type Client struct {
 	AccountGroup *AccountGroupClient
 	// Group is the client for interacting with the Group builders.
 	Group *GroupClient
+	// PromoCode is the client for interacting with the PromoCode builders.
+	PromoCode *PromoCodeClient
+	// PromoCodeUsage is the client for interacting with the PromoCodeUsage builders.
+	PromoCodeUsage *PromoCodeUsageClient
 	// Proxy is the client for interacting with the Proxy builders.
 	Proxy *ProxyClient
 	// RedeemCode is the client for interacting with the RedeemCode builders.
@@ -78,6 +84,8 @@ func (c *Client) init() {
 	c.Account = NewAccountClient(c.config)
 	c.AccountGroup = NewAccountGroupClient(c.config)
 	c.Group = NewGroupClient(c.config)
+	c.PromoCode = NewPromoCodeClient(c.config)
+	c.PromoCodeUsage = NewPromoCodeUsageClient(c.config)
 	c.Proxy = NewProxyClient(c.config)
 	c.RedeemCode = NewRedeemCodeClient(c.config)
 	c.Setting = NewSettingClient(c.config)
@@ -183,6 +191,8 @@ func (c *Client) Tx(ctx context.Context) (*Tx, error) {
 		Account:                 NewAccountClient(cfg),
 		AccountGroup:            NewAccountGroupClient(cfg),
 		Group:                   NewGroupClient(cfg),
+		PromoCode:               NewPromoCodeClient(cfg),
+		PromoCodeUsage:          NewPromoCodeUsageClient(cfg),
 		Proxy:                   NewProxyClient(cfg),
 		RedeemCode:              NewRedeemCodeClient(cfg),
 		Setting:                 NewSettingClient(cfg),
@@ -215,6 +225,8 @@ func (c *Client) BeginTx(ctx context.Context, opts *sql.TxOptions) (*Tx, error)
 		Account:                 NewAccountClient(cfg),
 		AccountGroup:            NewAccountGroupClient(cfg),
 		Group:                   NewGroupClient(cfg),
+		PromoCode:               NewPromoCodeClient(cfg),
+		PromoCodeUsage:          NewPromoCodeUsageClient(cfg),
 		Proxy:                   NewProxyClient(cfg),
 		RedeemCode:              NewRedeemCodeClient(cfg),
 		Setting:                 NewSettingClient(cfg),
@@ -253,9 +265,9 @@ func (c *Client) Close() error {
 // In order to add hooks to a specific client, call: `client.Node.Use(...)`.
 func (c *Client) Use(hooks ...Hook) {
 	for _, n := range []interface{ Use(...Hook) }{
-		c.APIKey, c.Account, c.AccountGroup, c.Group, c.Proxy, c.RedeemCode, c.Setting,
+		c.APIKey, c.Account, c.AccountGroup, c.Group, c.PromoCode, c.PromoCodeUsage,
-		c.UsageLog, c.User, c.UserAllowedGroup, c.UserAttributeDefinition,
+		c.Proxy, c.RedeemCode, c.Setting, c.UsageLog, c.User, c.UserAllowedGroup,
-		c.UserAttributeValue, c.UserSubscription,
+		c.UserAttributeDefinition, c.UserAttributeValue, c.UserSubscription,
 	} {
 		n.Use(hooks...)
 	}
@@ -265,9 +277,9 @@ func (c *Client) Use(hooks ...Hook) {
 // In order to add interceptors to a specific client, call: `client.Node.Intercept(...)`.
 func (c *Client) Intercept(interceptors ...Interceptor) {
 	for _, n := range []interface{ Intercept(...Interceptor) }{
-		c.APIKey, c.Account, c.AccountGroup, c.Group, c.Proxy, c.RedeemCode, c.Setting,
+		c.APIKey, c.Account, c.AccountGroup, c.Group, c.PromoCode, c.PromoCodeUsage,
-		c.UsageLog, c.User, c.UserAllowedGroup, c.UserAttributeDefinition,
+		c.Proxy, c.RedeemCode, c.Setting, c.UsageLog, c.User, c.UserAllowedGroup,
-		c.UserAttributeValue, c.UserSubscription,
+		c.UserAttributeDefinition, c.UserAttributeValue, c.UserSubscription,
 	} {
 		n.Intercept(interceptors...)
 	}
@@ -284,6 +296,10 @@ func (c *Client) Mutate(ctx context.Context, m Mutation) (Value, error) {
 		return c.AccountGroup.mutate(ctx, m)
 	case *GroupMutation:
 		return c.Group.mutate(ctx, m)
+	case *PromoCodeMutation:
+		return c.PromoCode.mutate(ctx, m)
+	case *PromoCodeUsageMutation:
+		return c.PromoCodeUsage.mutate(ctx, m)
 	case *ProxyMutation:
 		return c.Proxy.mutate(ctx, m)
 	case *RedeemCodeMutation:
@@ -1068,6 +1084,320 @@ func (c *GroupClient) mutate(ctx context.Context, m *GroupMutation) (Value, erro
 	}
 }
 
+// PromoCodeClient is a client for the PromoCode schema.
+type PromoCodeClient struct {
+	config
+}
+
+// NewPromoCodeClient returns a client for the PromoCode from the given config.
+func NewPromoCodeClient(c config) *PromoCodeClient {
+	return &PromoCodeClient{config: c}
+}
+
+// Use adds a list of mutation hooks to the hooks stack.
+// A call to `Use(f, g, h)` equals to `promocode.Hooks(f(g(h())))`.
+func (c *PromoCodeClient) Use(hooks ...Hook) {
+	c.hooks.PromoCode = append(c.hooks.PromoCode, hooks...)
+}
+
+// Intercept adds a list of query interceptors to the interceptors stack.
+// A call to `Intercept(f, g, h)` equals to `promocode.Intercept(f(g(h())))`.
+func (c *PromoCodeClient) Intercept(interceptors ...Interceptor) {
+	c.inters.PromoCode = append(c.inters.PromoCode, interceptors...)
+}
+
+// Create returns a builder for creating a PromoCode entity.
+func (c *PromoCodeClient) Create() *PromoCodeCreate {
+	mutation := newPromoCodeMutation(c.config, OpCreate)
+	return &PromoCodeCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// CreateBulk returns a builder for creating a bulk of PromoCode entities.
+func (c *PromoCodeClient) CreateBulk(builders ...*PromoCodeCreate) *PromoCodeCreateBulk {
+	return &PromoCodeCreateBulk{config: c.config, builders: builders}
+}
+
+// MapCreateBulk creates a bulk creation builder from the given slice. For each item in the slice, the function creates
+// a builder and applies setFunc on it.
+func (c *PromoCodeClient) MapCreateBulk(slice any, setFunc func(*PromoCodeCreate, int)) *PromoCodeCreateBulk {
+	rv := reflect.ValueOf(slice)
+	if rv.Kind() != reflect.Slice {
+		return &PromoCodeCreateBulk{err: fmt.Errorf("calling to PromoCodeClient.MapCreateBulk with wrong type %T, need slice", slice)}
+	}
+	builders := make([]*PromoCodeCreate, rv.Len())
+	for i := 0; i < rv.Len(); i++ {
+		builders[i] = c.Create()
+		setFunc(builders[i], i)
+	}
+	return &PromoCodeCreateBulk{config: c.config, builders: builders}
+}
+
+// Update returns an update builder for PromoCode.
+func (c *PromoCodeClient) Update() *PromoCodeUpdate {
+	mutation := newPromoCodeMutation(c.config, OpUpdate)
+	return &PromoCodeUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOne returns an update builder for the given entity.
+func (c *PromoCodeClient) UpdateOne(_m *PromoCode) *PromoCodeUpdateOne {
+	mutation := newPromoCodeMutation(c.config, OpUpdateOne, withPromoCode(_m))
+	return &PromoCodeUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOneID returns an update builder for the given id.
+func (c *PromoCodeClient) UpdateOneID(id int64) *PromoCodeUpdateOne {
+	mutation := newPromoCodeMutation(c.config, OpUpdateOne, withPromoCodeID(id))
+	return &PromoCodeUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// Delete returns a delete builder for PromoCode.
+func (c *PromoCodeClient) Delete() *PromoCodeDelete {
+	mutation := newPromoCodeMutation(c.config, OpDelete)
+	return &PromoCodeDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// DeleteOne returns a builder for deleting the given entity.
+func (c *PromoCodeClient) DeleteOne(_m *PromoCode) *PromoCodeDeleteOne {
+	return c.DeleteOneID(_m.ID)
+}
+
+// DeleteOneID returns a builder for deleting the given entity by its id.
+func (c *PromoCodeClient) DeleteOneID(id int64) *PromoCodeDeleteOne {
+	builder := c.Delete().Where(promocode.ID(id))
+	builder.mutation.id = &id
+	builder.mutation.op = OpDeleteOne
+	return &PromoCodeDeleteOne{builder}
+}
+
+// Query returns a query builder for PromoCode.
+func (c *PromoCodeClient) Query() *PromoCodeQuery {
+	return &PromoCodeQuery{
+		config: c.config,
+		ctx:    &QueryContext{Type: TypePromoCode},
+		inters: c.Interceptors(),
+	}
+}
+
+// Get returns a PromoCode entity by its id.
+func (c *PromoCodeClient) Get(ctx context.Context, id int64) (*PromoCode, error) {
+	return c.Query().Where(promocode.ID(id)).Only(ctx)
+}
+
+// GetX is like Get, but panics if an error occurs.
+func (c *PromoCodeClient) GetX(ctx context.Context, id int64) *PromoCode {
+	obj, err := c.Get(ctx, id)
+	if err != nil {
+		panic(err)
+	}
+	return obj
+}
+
+// QueryUsageRecords queries the usage_records edge of a PromoCode.
+func (c *PromoCodeClient) QueryUsageRecords(_m *PromoCode) *PromoCodeUsageQuery {
+	query := (&PromoCodeUsageClient{config: c.config}).Query()
+	query.path = func(context.Context) (fromV *sql.Selector, _ error) {
+		id := _m.ID
+		step := sqlgraph.NewStep(
+			sqlgraph.From(promocode.Table, promocode.FieldID, id),
+			sqlgraph.To(promocodeusage.Table, promocodeusage.FieldID),
+			sqlgraph.Edge(sqlgraph.O2M, false, promocode.UsageRecordsTable, promocode.UsageRecordsColumn),
+		)
+		fromV = sqlgraph.Neighbors(_m.driver.Dialect(), step)
+		return fromV, nil
+	}
+	return query
+}
+
+// Hooks returns the client hooks.
+func (c *PromoCodeClient) Hooks() []Hook {
+	return c.hooks.PromoCode
+}
+
+// Interceptors returns the client interceptors.
+func (c *PromoCodeClient) Interceptors() []Interceptor {
+	return c.inters.PromoCode
+}
+
+func (c *PromoCodeClient) mutate(ctx context.Context, m *PromoCodeMutation) (Value, error) {
+	switch m.Op() {
+	case OpCreate:
+		return (&PromoCodeCreate{config: c.config, hooks: c.Hooks(), mutation: m}).Save(ctx)
+	case OpUpdate:
+		return (&PromoCodeUpdate{config: c.config, hooks: c.Hooks(), mutation: m}).Save(ctx)
+	case OpUpdateOne:
+		return (&PromoCodeUpdateOne{config: c.config, hooks: c.Hooks(), mutation: m}).Save(ctx)
+	case OpDelete, OpDeleteOne:
+		return (&PromoCodeDelete{config: c.config, hooks: c.Hooks(), mutation: m}).Exec(ctx)
+	default:
+		return nil, fmt.Errorf("ent: unknown PromoCode mutation op: %q", m.Op())
+	}
+}
+
+// PromoCodeUsageClient is a client for the PromoCodeUsage schema.
+type PromoCodeUsageClient struct {
+	config
+}
+
+// NewPromoCodeUsageClient returns a client for the PromoCodeUsage from the given config.
+func NewPromoCodeUsageClient(c config) *PromoCodeUsageClient {
+	return &PromoCodeUsageClient{config: c}
+}
+
+// Use adds a list of mutation hooks to the hooks stack.
+// A call to `Use(f, g, h)` equals to `promocodeusage.Hooks(f(g(h())))`.
+func (c *PromoCodeUsageClient) Use(hooks ...Hook) {
+	c.hooks.PromoCodeUsage = append(c.hooks.PromoCodeUsage, hooks...)
+}
+
+// Intercept adds a list of query interceptors to the interceptors stack.
+// A call to `Intercept(f, g, h)` equals to `promocodeusage.Intercept(f(g(h())))`.
+func (c *PromoCodeUsageClient) Intercept(interceptors ...Interceptor) {
+	c.inters.PromoCodeUsage = append(c.inters.PromoCodeUsage, interceptors...)
+}
+
+// Create returns a builder for creating a PromoCodeUsage entity.
+func (c *PromoCodeUsageClient) Create() *PromoCodeUsageCreate {
+	mutation := newPromoCodeUsageMutation(c.config, OpCreate)
+	return &PromoCodeUsageCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// CreateBulk returns a builder for creating a bulk of PromoCodeUsage entities.
+func (c *PromoCodeUsageClient) CreateBulk(builders ...*PromoCodeUsageCreate) *PromoCodeUsageCreateBulk {
+	return &PromoCodeUsageCreateBulk{config: c.config, builders: builders}
+}
+
+// MapCreateBulk creates a bulk creation builder from the given slice. For each item in the slice, the function creates
+// a builder and applies setFunc on it.
+func (c *PromoCodeUsageClient) MapCreateBulk(slice any, setFunc func(*PromoCodeUsageCreate, int)) *PromoCodeUsageCreateBulk {
+	rv := reflect.ValueOf(slice)
+	if rv.Kind() != reflect.Slice {
+		return &PromoCodeUsageCreateBulk{err: fmt.Errorf("calling to PromoCodeUsageClient.MapCreateBulk with wrong type %T, need slice", slice)}
+	}
+	builders := make([]*PromoCodeUsageCreate, rv.Len())
+	for i := 0; i < rv.Len(); i++ {
+		builders[i] = c.Create()
+		setFunc(builders[i], i)
+	}
+	return &PromoCodeUsageCreateBulk{config: c.config, builders: builders}
+}
+
+// Update returns an update builder for PromoCodeUsage.
+func (c *PromoCodeUsageClient) Update() *PromoCodeUsageUpdate {
+	mutation := newPromoCodeUsageMutation(c.config, OpUpdate)
+	return &PromoCodeUsageUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOne returns an update builder for the given entity.
+func (c *PromoCodeUsageClient) UpdateOne(_m *PromoCodeUsage) *PromoCodeUsageUpdateOne {
+	mutation := newPromoCodeUsageMutation(c.config, OpUpdateOne, withPromoCodeUsage(_m))
+	return &PromoCodeUsageUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// UpdateOneID returns an update builder for the given id.
+func (c *PromoCodeUsageClient) UpdateOneID(id int64) *PromoCodeUsageUpdateOne {
+	mutation := newPromoCodeUsageMutation(c.config, OpUpdateOne, withPromoCodeUsageID(id))
+	return &PromoCodeUsageUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// Delete returns a delete builder for PromoCodeUsage.
+func (c *PromoCodeUsageClient) Delete() *PromoCodeUsageDelete {
+	mutation := newPromoCodeUsageMutation(c.config, OpDelete)
+	return &PromoCodeUsageDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
+}
+
+// DeleteOne returns a builder for deleting the given entity.
+func (c *PromoCodeUsageClient) DeleteOne(_m *PromoCodeUsage) *PromoCodeUsageDeleteOne {
+	return c.DeleteOneID(_m.ID)
+}
+
+// DeleteOneID returns a builder for deleting the given entity by its id.
+func (c *PromoCodeUsageClient) DeleteOneID(id int64) *PromoCodeUsageDeleteOne {
+	builder := c.Delete().Where(promocodeusage.ID(id))
+	builder.mutation.id = &id
+	builder.mutation.op = OpDeleteOne
+	return &PromoCodeUsageDeleteOne{builder}
+}
+
+// Query returns a query builder for PromoCodeUsage.
+func (c *PromoCodeUsageClient) Query() *PromoCodeUsageQuery {
+	return &PromoCodeUsageQuery{
+		config: c.config,
+		ctx:    &QueryContext{Type: TypePromoCodeUsage},
+		inters: c.Interceptors(),
+	}
+}
+
+// Get returns a PromoCodeUsage entity by its id.
+func (c *PromoCodeUsageClient) Get(ctx context.Context, id int64) (*PromoCodeUsage, error) {
+	return c.Query().Where(promocodeusage.ID(id)).Only(ctx)
+}
+
+// GetX is like Get, but panics if an error occurs.
+func (c *PromoCodeUsageClient) GetX(ctx context.Context, id int64) *PromoCodeUsage {
+	obj, err := c.Get(ctx, id)
+	if err != nil {
+		panic(err)
+	}
+	return obj
+}
+
+// QueryPromoCode queries the promo_code edge of a PromoCodeUsage.
+func (c *PromoCodeUsageClient) QueryPromoCode(_m *PromoCodeUsage) *PromoCodeQuery {
+	query := (&PromoCodeClient{config: c.config}).Query()
+	query.path = func(context.Context) (fromV *sql.Selector, _ error) {
+		id := _m.ID
+		step := sqlgraph.NewStep(
+			sqlgraph.From(promocodeusage.Table, promocodeusage.FieldID, id),
+			sqlgraph.To(promocode.Table, promocode.FieldID),
+			sqlgraph.Edge(sqlgraph.M2O, true, promocodeusage.PromoCodeTable, promocodeusage.PromoCodeColumn),
+		)
+		fromV = sqlgraph.Neighbors(_m.driver.Dialect(), step)
+		return fromV, nil
+	}
+	return query
+}
+
+// QueryUser queries the user edge of a PromoCodeUsage.
+func (c *PromoCodeUsageClient) QueryUser(_m *PromoCodeUsage) *UserQuery {
+	query := (&UserClient{config: c.config}).Query()
+	query.path = func(context.Context) (fromV *sql.Selector, _ error) {
+		id := _m.ID
+		step := sqlgraph.NewStep(
+			sqlgraph.From(promocodeusage.Table, promocodeusage.FieldID, id),
+			sqlgraph.To(user.Table, user.FieldID),
+			sqlgraph.Edge(sqlgraph.M2O, true, promocodeusage.UserTable, promocodeusage.UserColumn),
+		)
+		fromV = sqlgraph.Neighbors(_m.driver.Dialect(), step)
+		return fromV, nil
+	}
+	return query
+}
+
+// Hooks returns the client hooks.
+func (c *PromoCodeUsageClient) Hooks() []Hook {
+	return c.hooks.PromoCodeUsage
+}
+
+// Interceptors returns the client interceptors.
+func (c *PromoCodeUsageClient) Interceptors() []Interceptor {
+	return c.inters.PromoCodeUsage
+}
+
+func (c *PromoCodeUsageClient) mutate(ctx context.Context, m *PromoCodeUsageMutation) (Value, error) {
+	switch m.Op() {
+	case OpCreate:
+		return (&PromoCodeUsageCreate{config: c.config, hooks: c.Hooks(), mutation: m}).Save(ctx)
+	case OpUpdate:
+		return (&PromoCodeUsageUpdate{config: c.config, hooks: c.Hooks(), mutation: m}).Save(ctx)
+	case OpUpdateOne:
+		return (&PromoCodeUsageUpdateOne{config: c.config, hooks: c.Hooks(), mutation: m}).Save(ctx)
+	case OpDelete, OpDeleteOne:
+		return (&PromoCodeUsageDelete{config: c.config, hooks: c.Hooks(), mutation: m}).Exec(ctx)
+	default:
+		return nil, fmt.Errorf("ent: unknown PromoCodeUsage mutation op: %q", m.Op())
+	}
+}
+
 // ProxyClient is a client for the Proxy schema.
 type ProxyClient struct {
 	config
@@ -1950,6 +2280,22 @@ func (c *UserClient) QueryAttributeValues(_m *User) *UserAttributeValueQuery {
 	return query
 }
 
+// QueryPromoCodeUsages queries the promo_code_usages edge of a User.
+func (c *UserClient) QueryPromoCodeUsages(_m *User) *PromoCodeUsageQuery {
+	query := (&PromoCodeUsageClient{config: c.config}).Query()
+	query.path = func(context.Context) (fromV *sql.Selector, _ error) {
+		id := _m.ID
+		step := sqlgraph.NewStep(
+			sqlgraph.From(user.Table, user.FieldID, id),
+			sqlgraph.To(promocodeusage.Table, promocodeusage.FieldID),
+			sqlgraph.Edge(sqlgraph.O2M, false, user.PromoCodeUsagesTable, user.PromoCodeUsagesColumn),
+		)
+		fromV = sqlgraph.Neighbors(_m.driver.Dialect(), step)
+		return fromV, nil
+	}
+	return query
+}
+
 // QueryUserAllowedGroups queries the user_allowed_groups edge of a User.
 func (c *UserClient) QueryUserAllowedGroups(_m *User) *UserAllowedGroupQuery {
 	query := (&UserAllowedGroupClient{config: c.config}).Query()
@@ -2627,14 +2973,14 @@ func (c *UserSubscriptionClient) mutate(ctx context.Context, m *UserSubscription
 // hooks and interceptors per client, for fast access.
 type (
 	hooks struct {
-		APIKey, Account, AccountGroup, Group, Proxy, RedeemCode, Setting, UsageLog,
+		APIKey, Account, AccountGroup, Group, PromoCode, PromoCodeUsage, Proxy,
-		User, UserAllowedGroup, UserAttributeDefinition, UserAttributeValue,
+		RedeemCode, Setting, UsageLog, User, UserAllowedGroup, UserAttributeDefinition,
-		UserSubscription []ent.Hook
+		UserAttributeValue, UserSubscription []ent.Hook
 	}
 	inters struct {
-		APIKey, Account, AccountGroup, Group, Proxy, RedeemCode, Setting, UsageLog,
+		APIKey, Account, AccountGroup, Group, PromoCode, PromoCodeUsage, Proxy,
-		User, UserAllowedGroup, UserAttributeDefinition, UserAttributeValue,
+		RedeemCode, Setting, UsageLog, User, UserAllowedGroup, UserAttributeDefinition,
-		UserSubscription []ent.Interceptor
+		UserAttributeValue, UserSubscription []ent.Interceptor
 	}
 )
 

backend/ent/ent.go

@@ -16,6 +16,8 @@ import (
 	"github.com/Wei-Shaw/sub2api/ent/accountgroup"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
 	"github.com/Wei-Shaw/sub2api/ent/group"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
 	"github.com/Wei-Shaw/sub2api/ent/proxy"
 	"github.com/Wei-Shaw/sub2api/ent/redeemcode"
 	"github.com/Wei-Shaw/sub2api/ent/setting"
@@ -89,6 +91,8 @@ func checkColumn(t, c string) error {
 			account.Table:                 account.ValidColumn,
 			accountgroup.Table:            accountgroup.ValidColumn,
 			group.Table:                   group.ValidColumn,
+			promocode.Table:               promocode.ValidColumn,
+			promocodeusage.Table:          promocodeusage.ValidColumn,
 			proxy.Table:                   proxy.ValidColumn,
 			redeemcode.Table:              redeemcode.ValidColumn,
 			setting.Table:                 setting.ValidColumn,

backend/ent/generate.go

@@ -2,4 +2,5 @@
 package ent
 
 // 启用 sql/execquery 以生成 ExecContext/QueryContext 的透传接口，便于事务内执行原生 SQL。
-//go:generate go run -mod=mod entgo.io/ent/cmd/ent generate --feature sql/upsert,intercept,sql/execquery --idtype int64 ./schema
+// 启用 sql/lock 以支持 FOR UPDATE 行锁。
+//go:generate go run -mod=mod entgo.io/ent/cmd/ent generate --feature sql/upsert,intercept,sql/execquery,sql/lock --idtype int64 ./schema

backend/ent/group_query.go

@@ -9,6 +9,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -39,6 +40,7 @@ type GroupQuery struct {
 	withAllowedUsers      *UserQuery
 	withAccountGroups     *AccountGroupQuery
 	withUserAllowedGroups *UserAllowedGroupQuery
+	modifiers             []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -643,6 +645,9 @@ func (_q *GroupQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Group,
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -1025,6 +1030,9 @@ func (_q *GroupQuery) loadUserAllowedGroups(ctx context.Context, query *UserAllo
 
 func (_q *GroupQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -1087,6 +1095,9 @@ func (_q *GroupQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -1104,6 +1115,32 @@ func (_q *GroupQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *GroupQuery) ForUpdate(opts ...sql.LockOption) *GroupQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *GroupQuery) ForShare(opts ...sql.LockOption) *GroupQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // GroupGroupBy is the group-by builder for Group entities.
 type GroupGroupBy struct {
 	selector

backend/ent/hook/hook.go

@@ -57,6 +57,30 @@ func (f GroupFunc) Mutate(ctx context.Context, m ent.Mutation) (ent.Value, error
 	return nil, fmt.Errorf("unexpected mutation type %T. expect *ent.GroupMutation", m)
 }
 
+// The PromoCodeFunc type is an adapter to allow the use of ordinary
+// function as PromoCode mutator.
+type PromoCodeFunc func(context.Context, *ent.PromoCodeMutation) (ent.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f PromoCodeFunc) Mutate(ctx context.Context, m ent.Mutation) (ent.Value, error) {
+	if mv, ok := m.(*ent.PromoCodeMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *ent.PromoCodeMutation", m)
+}
+
+// The PromoCodeUsageFunc type is an adapter to allow the use of ordinary
+// function as PromoCodeUsage mutator.
+type PromoCodeUsageFunc func(context.Context, *ent.PromoCodeUsageMutation) (ent.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f PromoCodeUsageFunc) Mutate(ctx context.Context, m ent.Mutation) (ent.Value, error) {
+	if mv, ok := m.(*ent.PromoCodeUsageMutation); ok {
+		return f(ctx, mv)
+	}
+	return nil, fmt.Errorf("unexpected mutation type %T. expect *ent.PromoCodeUsageMutation", m)
+}
+
 // The ProxyFunc type is an adapter to allow the use of ordinary
 // function as Proxy mutator.
 type ProxyFunc func(context.Context, *ent.ProxyMutation) (ent.Value, error)

backend/ent/intercept/intercept.go

@@ -13,6 +13,8 @@ import (
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
 	"github.com/Wei-Shaw/sub2api/ent/group"
 	"github.com/Wei-Shaw/sub2api/ent/predicate"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
 	"github.com/Wei-Shaw/sub2api/ent/proxy"
 	"github.com/Wei-Shaw/sub2api/ent/redeemcode"
 	"github.com/Wei-Shaw/sub2api/ent/setting"
@@ -188,6 +190,60 @@ func (f TraverseGroup) Traverse(ctx context.Context, q ent.Query) error {
 	return fmt.Errorf("unexpected query type %T. expect *ent.GroupQuery", q)
 }
 
+// The PromoCodeFunc type is an adapter to allow the use of ordinary function as a Querier.
+type PromoCodeFunc func(context.Context, *ent.PromoCodeQuery) (ent.Value, error)
+
+// Query calls f(ctx, q).
+func (f PromoCodeFunc) Query(ctx context.Context, q ent.Query) (ent.Value, error) {
+	if q, ok := q.(*ent.PromoCodeQuery); ok {
+		return f(ctx, q)
+	}
+	return nil, fmt.Errorf("unexpected query type %T. expect *ent.PromoCodeQuery", q)
+}
+
+// The TraversePromoCode type is an adapter to allow the use of ordinary function as Traverser.
+type TraversePromoCode func(context.Context, *ent.PromoCodeQuery) error
+
+// Intercept is a dummy implementation of Intercept that returns the next Querier in the pipeline.
+func (f TraversePromoCode) Intercept(next ent.Querier) ent.Querier {
+	return next
+}
+
+// Traverse calls f(ctx, q).
+func (f TraversePromoCode) Traverse(ctx context.Context, q ent.Query) error {
+	if q, ok := q.(*ent.PromoCodeQuery); ok {
+		return f(ctx, q)
+	}
+	return fmt.Errorf("unexpected query type %T. expect *ent.PromoCodeQuery", q)
+}
+
+// The PromoCodeUsageFunc type is an adapter to allow the use of ordinary function as a Querier.
+type PromoCodeUsageFunc func(context.Context, *ent.PromoCodeUsageQuery) (ent.Value, error)
+
+// Query calls f(ctx, q).
+func (f PromoCodeUsageFunc) Query(ctx context.Context, q ent.Query) (ent.Value, error) {
+	if q, ok := q.(*ent.PromoCodeUsageQuery); ok {
+		return f(ctx, q)
+	}
+	return nil, fmt.Errorf("unexpected query type %T. expect *ent.PromoCodeUsageQuery", q)
+}
+
+// The TraversePromoCodeUsage type is an adapter to allow the use of ordinary function as Traverser.
+type TraversePromoCodeUsage func(context.Context, *ent.PromoCodeUsageQuery) error
+
+// Intercept is a dummy implementation of Intercept that returns the next Querier in the pipeline.
+func (f TraversePromoCodeUsage) Intercept(next ent.Querier) ent.Querier {
+	return next
+}
+
+// Traverse calls f(ctx, q).
+func (f TraversePromoCodeUsage) Traverse(ctx context.Context, q ent.Query) error {
+	if q, ok := q.(*ent.PromoCodeUsageQuery); ok {
+		return f(ctx, q)
+	}
+	return fmt.Errorf("unexpected query type %T. expect *ent.PromoCodeUsageQuery", q)
+}
+
 // The ProxyFunc type is an adapter to allow the use of ordinary function as a Querier.
 type ProxyFunc func(context.Context, *ent.ProxyQuery) (ent.Value, error)
 
@@ -442,6 +498,10 @@ func NewQuery(q ent.Query) (Query, error) {
 		return &query[*ent.AccountGroupQuery, predicate.AccountGroup, accountgroup.OrderOption]{typ: ent.TypeAccountGroup, tq: q}, nil
 	case *ent.GroupQuery:
 		return &query[*ent.GroupQuery, predicate.Group, group.OrderOption]{typ: ent.TypeGroup, tq: q}, nil
+	case *ent.PromoCodeQuery:
+		return &query[*ent.PromoCodeQuery, predicate.PromoCode, promocode.OrderOption]{typ: ent.TypePromoCode, tq: q}, nil
+	case *ent.PromoCodeUsageQuery:
+		return &query[*ent.PromoCodeUsageQuery, predicate.PromoCodeUsage, promocodeusage.OrderOption]{typ: ent.TypePromoCodeUsage, tq: q}, nil
 	case *ent.ProxyQuery:
 		return &query[*ent.ProxyQuery, predicate.Proxy, proxy.OrderOption]{typ: ent.TypeProxy, tq: q}, nil
 	case *ent.RedeemCodeQuery:

backend/ent/migrate/schema.go

@@ -18,6 +18,8 @@ var (
 		{Name: "key", Type: field.TypeString, Unique: true, Size: 128},
 		{Name: "name", Type: field.TypeString, Size: 100},
 		{Name: "status", Type: field.TypeString, Size: 20, Default: "active"},
+		{Name: "ip_whitelist", Type: field.TypeJSON, Nullable: true},
+		{Name: "ip_blacklist", Type: field.TypeJSON, Nullable: true},
 		{Name: "group_id", Type: field.TypeInt64, Nullable: true},
 		{Name: "user_id", Type: field.TypeInt64},
 	}
@@ -29,13 +31,13 @@ var (
 		ForeignKeys: []*schema.ForeignKey{
 			{
 				Symbol:     "api_keys_groups_api_keys",
-				Columns:    []*schema.Column{APIKeysColumns[7]},
+				Columns:    []*schema.Column{APIKeysColumns[9]},
 				RefColumns: []*schema.Column{GroupsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
 			{
 				Symbol:     "api_keys_users_api_keys",
-				Columns:    []*schema.Column{APIKeysColumns[8]},
+				Columns:    []*schema.Column{APIKeysColumns[10]},
 				RefColumns: []*schema.Column{UsersColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
@@ -44,12 +46,12 @@ var (
 			{
 				Name:    "apikey_user_id",
 				Unique:  false,
-				Columns: []*schema.Column{APIKeysColumns[8]},
+				Columns: []*schema.Column{APIKeysColumns[10]},
 			},
 			{
 				Name:    "apikey_group_id",
 				Unique:  false,
-				Columns: []*schema.Column{APIKeysColumns[7]},
+				Columns: []*schema.Column{APIKeysColumns[9]},
 			},
 			{
 				Name:    "apikey_status",
@@ -257,6 +259,82 @@ var (
 			},
 		},
 	}
+	// PromoCodesColumns holds the columns for the "promo_codes" table.
+	PromoCodesColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt64, Increment: true},
+		{Name: "code", Type: field.TypeString, Unique: true, Size: 32},
+		{Name: "bonus_amount", Type: field.TypeFloat64, Default: 0, SchemaType: map[string]string{"postgres": "decimal(20,8)"}},
+		{Name: "max_uses", Type: field.TypeInt, Default: 0},
+		{Name: "used_count", Type: field.TypeInt, Default: 0},
+		{Name: "status", Type: field.TypeString, Size: 20, Default: "active"},
+		{Name: "expires_at", Type: field.TypeTime, Nullable: true, SchemaType: map[string]string{"postgres": "timestamptz"}},
+		{Name: "notes", Type: field.TypeString, Nullable: true, SchemaType: map[string]string{"postgres": "text"}},
+		{Name: "created_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
+		{Name: "updated_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
+	}
+	// PromoCodesTable holds the schema information for the "promo_codes" table.
+	PromoCodesTable = &schema.Table{
+		Name:       "promo_codes",
+		Columns:    PromoCodesColumns,
+		PrimaryKey: []*schema.Column{PromoCodesColumns[0]},
+		Indexes: []*schema.Index{
+			{
+				Name:    "promocode_status",
+				Unique:  false,
+				Columns: []*schema.Column{PromoCodesColumns[5]},
+			},
+			{
+				Name:    "promocode_expires_at",
+				Unique:  false,
+				Columns: []*schema.Column{PromoCodesColumns[6]},
+			},
+		},
+	}
+	// PromoCodeUsagesColumns holds the columns for the "promo_code_usages" table.
+	PromoCodeUsagesColumns = []*schema.Column{
+		{Name: "id", Type: field.TypeInt64, Increment: true},
+		{Name: "bonus_amount", Type: field.TypeFloat64, SchemaType: map[string]string{"postgres": "decimal(20,8)"}},
+		{Name: "used_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
+		{Name: "promo_code_id", Type: field.TypeInt64},
+		{Name: "user_id", Type: field.TypeInt64},
+	}
+	// PromoCodeUsagesTable holds the schema information for the "promo_code_usages" table.
+	PromoCodeUsagesTable = &schema.Table{
+		Name:       "promo_code_usages",
+		Columns:    PromoCodeUsagesColumns,
+		PrimaryKey: []*schema.Column{PromoCodeUsagesColumns[0]},
+		ForeignKeys: []*schema.ForeignKey{
+			{
+				Symbol:     "promo_code_usages_promo_codes_usage_records",
+				Columns:    []*schema.Column{PromoCodeUsagesColumns[3]},
+				RefColumns: []*schema.Column{PromoCodesColumns[0]},
+				OnDelete:   schema.NoAction,
+			},
+			{
+				Symbol:     "promo_code_usages_users_promo_code_usages",
+				Columns:    []*schema.Column{PromoCodeUsagesColumns[4]},
+				RefColumns: []*schema.Column{UsersColumns[0]},
+				OnDelete:   schema.NoAction,
+			},
+		},
+		Indexes: []*schema.Index{
+			{
+				Name:    "promocodeusage_promo_code_id",
+				Unique:  false,
+				Columns: []*schema.Column{PromoCodeUsagesColumns[3]},
+			},
+			{
+				Name:    "promocodeusage_user_id",
+				Unique:  false,
+				Columns: []*schema.Column{PromoCodeUsagesColumns[4]},
+			},
+			{
+				Name:    "promocodeusage_promo_code_id_user_id",
+				Unique:  true,
+				Columns: []*schema.Column{PromoCodeUsagesColumns[3], PromoCodeUsagesColumns[4]},
+			},
+		},
+	}
 	// ProxiesColumns holds the columns for the "proxies" table.
 	ProxiesColumns = []*schema.Column{
 		{Name: "id", Type: field.TypeInt64, Increment: true},
@@ -376,6 +454,7 @@ var (
 		{Name: "duration_ms", Type: field.TypeInt, Nullable: true},
 		{Name: "first_token_ms", Type: field.TypeInt, Nullable: true},
 		{Name: "user_agent", Type: field.TypeString, Nullable: true, Size: 512},
+		{Name: "ip_address", Type: field.TypeString, Nullable: true, Size: 45},
 		{Name: "image_count", Type: field.TypeInt, Default: 0},
 		{Name: "image_size", Type: field.TypeString, Nullable: true, Size: 10},
 		{Name: "created_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
@@ -393,31 +472,31 @@ var (
 		ForeignKeys: []*schema.ForeignKey{
 			{
 				Symbol:     "usage_logs_api_keys_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[24]},
+				Columns:    []*schema.Column{UsageLogsColumns[25]},
 				RefColumns: []*schema.Column{APIKeysColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_accounts_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[25]},
+				Columns:    []*schema.Column{UsageLogsColumns[26]},
 				RefColumns: []*schema.Column{AccountsColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_groups_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[26]},
+				Columns:    []*schema.Column{UsageLogsColumns[27]},
 				RefColumns: []*schema.Column{GroupsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
 			{
 				Symbol:     "usage_logs_users_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[27]},
+				Columns:    []*schema.Column{UsageLogsColumns[28]},
 				RefColumns: []*schema.Column{UsersColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_user_subscriptions_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[28]},
+				Columns:    []*schema.Column{UsageLogsColumns[29]},
 				RefColumns: []*schema.Column{UserSubscriptionsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
@@ -426,32 +505,32 @@ var (
 			{
 				Name:    "usagelog_user_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[27]},
+				Columns: []*schema.Column{UsageLogsColumns[28]},
 			},
 			{
 				Name:    "usagelog_api_key_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[24]},
+				Columns: []*schema.Column{UsageLogsColumns[25]},
 			},
 			{
 				Name:    "usagelog_account_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[25]},
+				Columns: []*schema.Column{UsageLogsColumns[26]},
 			},
 			{
 				Name:    "usagelog_group_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[26]},
+				Columns: []*schema.Column{UsageLogsColumns[27]},
 			},
 			{
 				Name:    "usagelog_subscription_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[28]},
+				Columns: []*schema.Column{UsageLogsColumns[29]},
 			},
 			{
 				Name:    "usagelog_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[23]},
+				Columns: []*schema.Column{UsageLogsColumns[24]},
 			},
 			{
 				Name:    "usagelog_model",
@@ -466,12 +545,12 @@ var (
 			{
 				Name:    "usagelog_user_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[27], UsageLogsColumns[23]},
+				Columns: []*schema.Column{UsageLogsColumns[28], UsageLogsColumns[24]},
 			},
 			{
 				Name:    "usagelog_api_key_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[24], UsageLogsColumns[23]},
+				Columns: []*schema.Column{UsageLogsColumns[25], UsageLogsColumns[24]},
 			},
 		},
 	}
@@ -717,6 +796,8 @@ var (
 		AccountsTable,
 		AccountGroupsTable,
 		GroupsTable,
+		PromoCodesTable,
+		PromoCodeUsagesTable,
 		ProxiesTable,
 		RedeemCodesTable,
 		SettingsTable,
@@ -747,6 +828,14 @@ func init() {
 	GroupsTable.Annotation = &entsql.Annotation{
 		Table: "groups",
 	}
+	PromoCodesTable.Annotation = &entsql.Annotation{
+		Table: "promo_codes",
+	}
+	PromoCodeUsagesTable.ForeignKeys[0].RefTable = PromoCodesTable
+	PromoCodeUsagesTable.ForeignKeys[1].RefTable = UsersTable
+	PromoCodeUsagesTable.Annotation = &entsql.Annotation{
+		Table: "promo_code_usages",
+	}
 	ProxiesTable.Annotation = &entsql.Annotation{
 		Table: "proxies",
 	}

backend/ent/predicate/predicate.go

@@ -18,6 +18,12 @@ type AccountGroup func(*sql.Selector)
 // Group is the predicate function for group builders.
 type Group func(*sql.Selector)
 
+// PromoCode is the predicate function for promocode builders.
+type PromoCode func(*sql.Selector)
+
+// PromoCodeUsage is the predicate function for promocodeusage builders.
+type PromoCodeUsage func(*sql.Selector)
+
 // Proxy is the predicate function for proxy builders.
 type Proxy func(*sql.Selector)
 

backend/ent/promocode.go

@@ -0,0 +1,228 @@
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+)
+
+// PromoCode is the model entity for the PromoCode schema.
+type PromoCode struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int64 `json:"id,omitempty"`
+	// 优惠码
+	Code string `json:"code,omitempty"`
+	// 赠送余额金额
+	BonusAmount float64 `json:"bonus_amount,omitempty"`
+	// 最大使用次数，0表示无限制
+	MaxUses int `json:"max_uses,omitempty"`
+	// 已使用次数
+	UsedCount int `json:"used_count,omitempty"`
+	// 状态: active, disabled
+	Status string `json:"status,omitempty"`
+	// 过期时间，null表示永不过期
+	ExpiresAt *time.Time `json:"expires_at,omitempty"`
+	// 备注
+	Notes *string `json:"notes,omitempty"`
+	// CreatedAt holds the value of the "created_at" field.
+	CreatedAt time.Time `json:"created_at,omitempty"`
+	// UpdatedAt holds the value of the "updated_at" field.
+	UpdatedAt time.Time `json:"updated_at,omitempty"`
+	// Edges holds the relations/edges for other nodes in the graph.
+	// The values are being populated by the PromoCodeQuery when eager-loading is set.
+	Edges        PromoCodeEdges `json:"edges"`
+	selectValues sql.SelectValues
+}
+
+// PromoCodeEdges holds the relations/edges for other nodes in the graph.
+type PromoCodeEdges struct {
+	// UsageRecords holds the value of the usage_records edge.
+	UsageRecords []*PromoCodeUsage `json:"usage_records,omitempty"`
+	// loadedTypes holds the information for reporting if a
+	// type was loaded (or requested) in eager-loading or not.
+	loadedTypes [1]bool
+}
+
+// UsageRecordsOrErr returns the UsageRecords value or an error if the edge
+// was not loaded in eager-loading.
+func (e PromoCodeEdges) UsageRecordsOrErr() ([]*PromoCodeUsage, error) {
+	if e.loadedTypes[0] {
+		return e.UsageRecords, nil
+	}
+	return nil, &NotLoadedError{edge: "usage_records"}
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*PromoCode) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case promocode.FieldBonusAmount:
+			values[i] = new(sql.NullFloat64)
+		case promocode.FieldID, promocode.FieldMaxUses, promocode.FieldUsedCount:
+			values[i] = new(sql.NullInt64)
+		case promocode.FieldCode, promocode.FieldStatus, promocode.FieldNotes:
+			values[i] = new(sql.NullString)
+		case promocode.FieldExpiresAt, promocode.FieldCreatedAt, promocode.FieldUpdatedAt:
+			values[i] = new(sql.NullTime)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the PromoCode fields.
+func (_m *PromoCode) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case promocode.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int64(value.Int64)
+		case promocode.FieldCode:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field code", values[i])
+			} else if value.Valid {
+				_m.Code = value.String
+			}
+		case promocode.FieldBonusAmount:
+			if value, ok := values[i].(*sql.NullFloat64); !ok {
+				return fmt.Errorf("unexpected type %T for field bonus_amount", values[i])
+			} else if value.Valid {
+				_m.BonusAmount = value.Float64
+			}
+		case promocode.FieldMaxUses:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field max_uses", values[i])
+			} else if value.Valid {
+				_m.MaxUses = int(value.Int64)
+			}
+		case promocode.FieldUsedCount:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field used_count", values[i])
+			} else if value.Valid {
+				_m.UsedCount = int(value.Int64)
+			}
+		case promocode.FieldStatus:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field status", values[i])
+			} else if value.Valid {
+				_m.Status = value.String
+			}
+		case promocode.FieldExpiresAt:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field expires_at", values[i])
+			} else if value.Valid {
+				_m.ExpiresAt = new(time.Time)
+				*_m.ExpiresAt = value.Time
+			}
+		case promocode.FieldNotes:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field notes", values[i])
+			} else if value.Valid {
+				_m.Notes = new(string)
+				*_m.Notes = value.String
+			}
+		case promocode.FieldCreatedAt:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field created_at", values[i])
+			} else if value.Valid {
+				_m.CreatedAt = value.Time
+			}
+		case promocode.FieldUpdatedAt:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field updated_at", values[i])
+			} else if value.Valid {
+				_m.UpdatedAt = value.Time
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the PromoCode.
+// This includes values selected through modifiers, order, etc.
+func (_m *PromoCode) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// QueryUsageRecords queries the "usage_records" edge of the PromoCode entity.
+func (_m *PromoCode) QueryUsageRecords() *PromoCodeUsageQuery {
+	return NewPromoCodeClient(_m.config).QueryUsageRecords(_m)
+}
+
+// Update returns a builder for updating this PromoCode.
+// Note that you need to call PromoCode.Unwrap() before calling this method if this PromoCode
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *PromoCode) Update() *PromoCodeUpdateOne {
+	return NewPromoCodeClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the PromoCode entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *PromoCode) Unwrap() *PromoCode {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("ent: PromoCode is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *PromoCode) String() string {
+	var builder strings.Builder
+	builder.WriteString("PromoCode(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("code=")
+	builder.WriteString(_m.Code)
+	builder.WriteString(", ")
+	builder.WriteString("bonus_amount=")
+	builder.WriteString(fmt.Sprintf("%v", _m.BonusAmount))
+	builder.WriteString(", ")
+	builder.WriteString("max_uses=")
+	builder.WriteString(fmt.Sprintf("%v", _m.MaxUses))
+	builder.WriteString(", ")
+	builder.WriteString("used_count=")
+	builder.WriteString(fmt.Sprintf("%v", _m.UsedCount))
+	builder.WriteString(", ")
+	builder.WriteString("status=")
+	builder.WriteString(_m.Status)
+	builder.WriteString(", ")
+	if v := _m.ExpiresAt; v != nil {
+		builder.WriteString("expires_at=")
+		builder.WriteString(v.Format(time.ANSIC))
+	}
+	builder.WriteString(", ")
+	if v := _m.Notes; v != nil {
+		builder.WriteString("notes=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
+	builder.WriteString("created_at=")
+	builder.WriteString(_m.CreatedAt.Format(time.ANSIC))
+	builder.WriteString(", ")
+	builder.WriteString("updated_at=")
+	builder.WriteString(_m.UpdatedAt.Format(time.ANSIC))
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// PromoCodes is a parsable slice of PromoCode.
+type PromoCodes []*PromoCode

backend/ent/promocode/promocode.go

@@ -0,0 +1,165 @@
+// Code generated by ent, DO NOT EDIT.
+
+package promocode
+
+import (
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+)
+
+const (
+	// Label holds the string label denoting the promocode type in the database.
+	Label = "promo_code"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldCode holds the string denoting the code field in the database.
+	FieldCode = "code"
+	// FieldBonusAmount holds the string denoting the bonus_amount field in the database.
+	FieldBonusAmount = "bonus_amount"
+	// FieldMaxUses holds the string denoting the max_uses field in the database.
+	FieldMaxUses = "max_uses"
+	// FieldUsedCount holds the string denoting the used_count field in the database.
+	FieldUsedCount = "used_count"
+	// FieldStatus holds the string denoting the status field in the database.
+	FieldStatus = "status"
+	// FieldExpiresAt holds the string denoting the expires_at field in the database.
+	FieldExpiresAt = "expires_at"
+	// FieldNotes holds the string denoting the notes field in the database.
+	FieldNotes = "notes"
+	// FieldCreatedAt holds the string denoting the created_at field in the database.
+	FieldCreatedAt = "created_at"
+	// FieldUpdatedAt holds the string denoting the updated_at field in the database.
+	FieldUpdatedAt = "updated_at"
+	// EdgeUsageRecords holds the string denoting the usage_records edge name in mutations.
+	EdgeUsageRecords = "usage_records"
+	// Table holds the table name of the promocode in the database.
+	Table = "promo_codes"
+	// UsageRecordsTable is the table that holds the usage_records relation/edge.
+	UsageRecordsTable = "promo_code_usages"
+	// UsageRecordsInverseTable is the table name for the PromoCodeUsage entity.
+	// It exists in this package in order to avoid circular dependency with the "promocodeusage" package.
+	UsageRecordsInverseTable = "promo_code_usages"
+	// UsageRecordsColumn is the table column denoting the usage_records relation/edge.
+	UsageRecordsColumn = "promo_code_id"
+)
+
+// Columns holds all SQL columns for promocode fields.
+var Columns = []string{
+	FieldID,
+	FieldCode,
+	FieldBonusAmount,
+	FieldMaxUses,
+	FieldUsedCount,
+	FieldStatus,
+	FieldExpiresAt,
+	FieldNotes,
+	FieldCreatedAt,
+	FieldUpdatedAt,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+var (
+	// CodeValidator is a validator for the "code" field. It is called by the builders before save.
+	CodeValidator func(string) error
+	// DefaultBonusAmount holds the default value on creation for the "bonus_amount" field.
+	DefaultBonusAmount float64
+	// DefaultMaxUses holds the default value on creation for the "max_uses" field.
+	DefaultMaxUses int
+	// DefaultUsedCount holds the default value on creation for the "used_count" field.
+	DefaultUsedCount int
+	// DefaultStatus holds the default value on creation for the "status" field.
+	DefaultStatus string
+	// StatusValidator is a validator for the "status" field. It is called by the builders before save.
+	StatusValidator func(string) error
+	// DefaultCreatedAt holds the default value on creation for the "created_at" field.
+	DefaultCreatedAt func() time.Time
+	// DefaultUpdatedAt holds the default value on creation for the "updated_at" field.
+	DefaultUpdatedAt func() time.Time
+	// UpdateDefaultUpdatedAt holds the default value on update for the "updated_at" field.
+	UpdateDefaultUpdatedAt func() time.Time
+)
+
+// OrderOption defines the ordering options for the PromoCode queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByCode orders the results by the code field.
+func ByCode(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldCode, opts...).ToFunc()
+}
+
+// ByBonusAmount orders the results by the bonus_amount field.
+func ByBonusAmount(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldBonusAmount, opts...).ToFunc()
+}
+
+// ByMaxUses orders the results by the max_uses field.
+func ByMaxUses(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldMaxUses, opts...).ToFunc()
+}
+
+// ByUsedCount orders the results by the used_count field.
+func ByUsedCount(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldUsedCount, opts...).ToFunc()
+}
+
+// ByStatus orders the results by the status field.
+func ByStatus(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldStatus, opts...).ToFunc()
+}
+
+// ByExpiresAt orders the results by the expires_at field.
+func ByExpiresAt(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldExpiresAt, opts...).ToFunc()
+}
+
+// ByNotes orders the results by the notes field.
+func ByNotes(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldNotes, opts...).ToFunc()
+}
+
+// ByCreatedAt orders the results by the created_at field.
+func ByCreatedAt(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldCreatedAt, opts...).ToFunc()
+}
+
+// ByUpdatedAt orders the results by the updated_at field.
+func ByUpdatedAt(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldUpdatedAt, opts...).ToFunc()
+}
+
+// ByUsageRecordsCount orders the results by usage_records count.
+func ByUsageRecordsCount(opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborsCount(s, newUsageRecordsStep(), opts...)
+	}
+}
+
+// ByUsageRecords orders the results by usage_records terms.
+func ByUsageRecords(term sql.OrderTerm, terms ...sql.OrderTerm) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newUsageRecordsStep(), append([]sql.OrderTerm{term}, terms...)...)
+	}
+}
+func newUsageRecordsStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(UsageRecordsInverseTable, FieldID),
+		sqlgraph.Edge(sqlgraph.O2M, false, UsageRecordsTable, UsageRecordsColumn),
+	)
+}

backend/ent/promocode/where.go

@@ -0,0 +1,594 @@
+// Code generated by ent, DO NOT EDIT.
+
+package promocode
+
+import (
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldID, id))
+}
+
+// Code applies equality check predicate on the "code" field. It's identical to CodeEQ.
+func Code(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldCode, v))
+}
+
+// BonusAmount applies equality check predicate on the "bonus_amount" field. It's identical to BonusAmountEQ.
+func BonusAmount(v float64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldBonusAmount, v))
+}
+
+// MaxUses applies equality check predicate on the "max_uses" field. It's identical to MaxUsesEQ.
+func MaxUses(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldMaxUses, v))
+}
+
+// UsedCount applies equality check predicate on the "used_count" field. It's identical to UsedCountEQ.
+func UsedCount(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldUsedCount, v))
+}
+
+// Status applies equality check predicate on the "status" field. It's identical to StatusEQ.
+func Status(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldStatus, v))
+}
+
+// ExpiresAt applies equality check predicate on the "expires_at" field. It's identical to ExpiresAtEQ.
+func ExpiresAt(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldExpiresAt, v))
+}
+
+// Notes applies equality check predicate on the "notes" field. It's identical to NotesEQ.
+func Notes(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldNotes, v))
+}
+
+// CreatedAt applies equality check predicate on the "created_at" field. It's identical to CreatedAtEQ.
+func CreatedAt(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldCreatedAt, v))
+}
+
+// UpdatedAt applies equality check predicate on the "updated_at" field. It's identical to UpdatedAtEQ.
+func UpdatedAt(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldUpdatedAt, v))
+}
+
+// CodeEQ applies the EQ predicate on the "code" field.
+func CodeEQ(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldCode, v))
+}
+
+// CodeNEQ applies the NEQ predicate on the "code" field.
+func CodeNEQ(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldCode, v))
+}
+
+// CodeIn applies the In predicate on the "code" field.
+func CodeIn(vs ...string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldCode, vs...))
+}
+
+// CodeNotIn applies the NotIn predicate on the "code" field.
+func CodeNotIn(vs ...string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldCode, vs...))
+}
+
+// CodeGT applies the GT predicate on the "code" field.
+func CodeGT(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldCode, v))
+}
+
+// CodeGTE applies the GTE predicate on the "code" field.
+func CodeGTE(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldCode, v))
+}
+
+// CodeLT applies the LT predicate on the "code" field.
+func CodeLT(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldCode, v))
+}
+
+// CodeLTE applies the LTE predicate on the "code" field.
+func CodeLTE(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldCode, v))
+}
+
+// CodeContains applies the Contains predicate on the "code" field.
+func CodeContains(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldContains(FieldCode, v))
+}
+
+// CodeHasPrefix applies the HasPrefix predicate on the "code" field.
+func CodeHasPrefix(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldHasPrefix(FieldCode, v))
+}
+
+// CodeHasSuffix applies the HasSuffix predicate on the "code" field.
+func CodeHasSuffix(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldHasSuffix(FieldCode, v))
+}
+
+// CodeEqualFold applies the EqualFold predicate on the "code" field.
+func CodeEqualFold(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEqualFold(FieldCode, v))
+}
+
+// CodeContainsFold applies the ContainsFold predicate on the "code" field.
+func CodeContainsFold(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldContainsFold(FieldCode, v))
+}
+
+// BonusAmountEQ applies the EQ predicate on the "bonus_amount" field.
+func BonusAmountEQ(v float64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldBonusAmount, v))
+}
+
+// BonusAmountNEQ applies the NEQ predicate on the "bonus_amount" field.
+func BonusAmountNEQ(v float64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldBonusAmount, v))
+}
+
+// BonusAmountIn applies the In predicate on the "bonus_amount" field.
+func BonusAmountIn(vs ...float64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldBonusAmount, vs...))
+}
+
+// BonusAmountNotIn applies the NotIn predicate on the "bonus_amount" field.
+func BonusAmountNotIn(vs ...float64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldBonusAmount, vs...))
+}
+
+// BonusAmountGT applies the GT predicate on the "bonus_amount" field.
+func BonusAmountGT(v float64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldBonusAmount, v))
+}
+
+// BonusAmountGTE applies the GTE predicate on the "bonus_amount" field.
+func BonusAmountGTE(v float64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldBonusAmount, v))
+}
+
+// BonusAmountLT applies the LT predicate on the "bonus_amount" field.
+func BonusAmountLT(v float64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldBonusAmount, v))
+}
+
+// BonusAmountLTE applies the LTE predicate on the "bonus_amount" field.
+func BonusAmountLTE(v float64) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldBonusAmount, v))
+}
+
+// MaxUsesEQ applies the EQ predicate on the "max_uses" field.
+func MaxUsesEQ(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldMaxUses, v))
+}
+
+// MaxUsesNEQ applies the NEQ predicate on the "max_uses" field.
+func MaxUsesNEQ(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldMaxUses, v))
+}
+
+// MaxUsesIn applies the In predicate on the "max_uses" field.
+func MaxUsesIn(vs ...int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldMaxUses, vs...))
+}
+
+// MaxUsesNotIn applies the NotIn predicate on the "max_uses" field.
+func MaxUsesNotIn(vs ...int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldMaxUses, vs...))
+}
+
+// MaxUsesGT applies the GT predicate on the "max_uses" field.
+func MaxUsesGT(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldMaxUses, v))
+}
+
+// MaxUsesGTE applies the GTE predicate on the "max_uses" field.
+func MaxUsesGTE(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldMaxUses, v))
+}
+
+// MaxUsesLT applies the LT predicate on the "max_uses" field.
+func MaxUsesLT(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldMaxUses, v))
+}
+
+// MaxUsesLTE applies the LTE predicate on the "max_uses" field.
+func MaxUsesLTE(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldMaxUses, v))
+}
+
+// UsedCountEQ applies the EQ predicate on the "used_count" field.
+func UsedCountEQ(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldUsedCount, v))
+}
+
+// UsedCountNEQ applies the NEQ predicate on the "used_count" field.
+func UsedCountNEQ(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldUsedCount, v))
+}
+
+// UsedCountIn applies the In predicate on the "used_count" field.
+func UsedCountIn(vs ...int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldUsedCount, vs...))
+}
+
+// UsedCountNotIn applies the NotIn predicate on the "used_count" field.
+func UsedCountNotIn(vs ...int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldUsedCount, vs...))
+}
+
+// UsedCountGT applies the GT predicate on the "used_count" field.
+func UsedCountGT(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldUsedCount, v))
+}
+
+// UsedCountGTE applies the GTE predicate on the "used_count" field.
+func UsedCountGTE(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldUsedCount, v))
+}
+
+// UsedCountLT applies the LT predicate on the "used_count" field.
+func UsedCountLT(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldUsedCount, v))
+}
+
+// UsedCountLTE applies the LTE predicate on the "used_count" field.
+func UsedCountLTE(v int) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldUsedCount, v))
+}
+
+// StatusEQ applies the EQ predicate on the "status" field.
+func StatusEQ(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldStatus, v))
+}
+
+// StatusNEQ applies the NEQ predicate on the "status" field.
+func StatusNEQ(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldStatus, v))
+}
+
+// StatusIn applies the In predicate on the "status" field.
+func StatusIn(vs ...string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldStatus, vs...))
+}
+
+// StatusNotIn applies the NotIn predicate on the "status" field.
+func StatusNotIn(vs ...string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldStatus, vs...))
+}
+
+// StatusGT applies the GT predicate on the "status" field.
+func StatusGT(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldStatus, v))
+}
+
+// StatusGTE applies the GTE predicate on the "status" field.
+func StatusGTE(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldStatus, v))
+}
+
+// StatusLT applies the LT predicate on the "status" field.
+func StatusLT(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldStatus, v))
+}
+
+// StatusLTE applies the LTE predicate on the "status" field.
+func StatusLTE(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldStatus, v))
+}
+
+// StatusContains applies the Contains predicate on the "status" field.
+func StatusContains(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldContains(FieldStatus, v))
+}
+
+// StatusHasPrefix applies the HasPrefix predicate on the "status" field.
+func StatusHasPrefix(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldHasPrefix(FieldStatus, v))
+}
+
+// StatusHasSuffix applies the HasSuffix predicate on the "status" field.
+func StatusHasSuffix(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldHasSuffix(FieldStatus, v))
+}
+
+// StatusEqualFold applies the EqualFold predicate on the "status" field.
+func StatusEqualFold(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEqualFold(FieldStatus, v))
+}
+
+// StatusContainsFold applies the ContainsFold predicate on the "status" field.
+func StatusContainsFold(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldContainsFold(FieldStatus, v))
+}
+
+// ExpiresAtEQ applies the EQ predicate on the "expires_at" field.
+func ExpiresAtEQ(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldExpiresAt, v))
+}
+
+// ExpiresAtNEQ applies the NEQ predicate on the "expires_at" field.
+func ExpiresAtNEQ(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldExpiresAt, v))
+}
+
+// ExpiresAtIn applies the In predicate on the "expires_at" field.
+func ExpiresAtIn(vs ...time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldExpiresAt, vs...))
+}
+
+// ExpiresAtNotIn applies the NotIn predicate on the "expires_at" field.
+func ExpiresAtNotIn(vs ...time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldExpiresAt, vs...))
+}
+
+// ExpiresAtGT applies the GT predicate on the "expires_at" field.
+func ExpiresAtGT(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldExpiresAt, v))
+}
+
+// ExpiresAtGTE applies the GTE predicate on the "expires_at" field.
+func ExpiresAtGTE(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldExpiresAt, v))
+}
+
+// ExpiresAtLT applies the LT predicate on the "expires_at" field.
+func ExpiresAtLT(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldExpiresAt, v))
+}
+
+// ExpiresAtLTE applies the LTE predicate on the "expires_at" field.
+func ExpiresAtLTE(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldExpiresAt, v))
+}
+
+// ExpiresAtIsNil applies the IsNil predicate on the "expires_at" field.
+func ExpiresAtIsNil() predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIsNull(FieldExpiresAt))
+}
+
+// ExpiresAtNotNil applies the NotNil predicate on the "expires_at" field.
+func ExpiresAtNotNil() predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotNull(FieldExpiresAt))
+}
+
+// NotesEQ applies the EQ predicate on the "notes" field.
+func NotesEQ(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldNotes, v))
+}
+
+// NotesNEQ applies the NEQ predicate on the "notes" field.
+func NotesNEQ(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldNotes, v))
+}
+
+// NotesIn applies the In predicate on the "notes" field.
+func NotesIn(vs ...string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldNotes, vs...))
+}
+
+// NotesNotIn applies the NotIn predicate on the "notes" field.
+func NotesNotIn(vs ...string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldNotes, vs...))
+}
+
+// NotesGT applies the GT predicate on the "notes" field.
+func NotesGT(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldNotes, v))
+}
+
+// NotesGTE applies the GTE predicate on the "notes" field.
+func NotesGTE(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldNotes, v))
+}
+
+// NotesLT applies the LT predicate on the "notes" field.
+func NotesLT(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldNotes, v))
+}
+
+// NotesLTE applies the LTE predicate on the "notes" field.
+func NotesLTE(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldNotes, v))
+}
+
+// NotesContains applies the Contains predicate on the "notes" field.
+func NotesContains(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldContains(FieldNotes, v))
+}
+
+// NotesHasPrefix applies the HasPrefix predicate on the "notes" field.
+func NotesHasPrefix(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldHasPrefix(FieldNotes, v))
+}
+
+// NotesHasSuffix applies the HasSuffix predicate on the "notes" field.
+func NotesHasSuffix(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldHasSuffix(FieldNotes, v))
+}
+
+// NotesIsNil applies the IsNil predicate on the "notes" field.
+func NotesIsNil() predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIsNull(FieldNotes))
+}
+
+// NotesNotNil applies the NotNil predicate on the "notes" field.
+func NotesNotNil() predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotNull(FieldNotes))
+}
+
+// NotesEqualFold applies the EqualFold predicate on the "notes" field.
+func NotesEqualFold(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEqualFold(FieldNotes, v))
+}
+
+// NotesContainsFold applies the ContainsFold predicate on the "notes" field.
+func NotesContainsFold(v string) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldContainsFold(FieldNotes, v))
+}
+
+// CreatedAtEQ applies the EQ predicate on the "created_at" field.
+func CreatedAtEQ(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldCreatedAt, v))
+}
+
+// CreatedAtNEQ applies the NEQ predicate on the "created_at" field.
+func CreatedAtNEQ(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldCreatedAt, v))
+}
+
+// CreatedAtIn applies the In predicate on the "created_at" field.
+func CreatedAtIn(vs ...time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldCreatedAt, vs...))
+}
+
+// CreatedAtNotIn applies the NotIn predicate on the "created_at" field.
+func CreatedAtNotIn(vs ...time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldCreatedAt, vs...))
+}
+
+// CreatedAtGT applies the GT predicate on the "created_at" field.
+func CreatedAtGT(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldCreatedAt, v))
+}
+
+// CreatedAtGTE applies the GTE predicate on the "created_at" field.
+func CreatedAtGTE(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldCreatedAt, v))
+}
+
+// CreatedAtLT applies the LT predicate on the "created_at" field.
+func CreatedAtLT(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldCreatedAt, v))
+}
+
+// CreatedAtLTE applies the LTE predicate on the "created_at" field.
+func CreatedAtLTE(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldCreatedAt, v))
+}
+
+// UpdatedAtEQ applies the EQ predicate on the "updated_at" field.
+func UpdatedAtEQ(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldEQ(FieldUpdatedAt, v))
+}
+
+// UpdatedAtNEQ applies the NEQ predicate on the "updated_at" field.
+func UpdatedAtNEQ(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNEQ(FieldUpdatedAt, v))
+}
+
+// UpdatedAtIn applies the In predicate on the "updated_at" field.
+func UpdatedAtIn(vs ...time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldIn(FieldUpdatedAt, vs...))
+}
+
+// UpdatedAtNotIn applies the NotIn predicate on the "updated_at" field.
+func UpdatedAtNotIn(vs ...time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldNotIn(FieldUpdatedAt, vs...))
+}
+
+// UpdatedAtGT applies the GT predicate on the "updated_at" field.
+func UpdatedAtGT(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGT(FieldUpdatedAt, v))
+}
+
+// UpdatedAtGTE applies the GTE predicate on the "updated_at" field.
+func UpdatedAtGTE(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldGTE(FieldUpdatedAt, v))
+}
+
+// UpdatedAtLT applies the LT predicate on the "updated_at" field.
+func UpdatedAtLT(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLT(FieldUpdatedAt, v))
+}
+
+// UpdatedAtLTE applies the LTE predicate on the "updated_at" field.
+func UpdatedAtLTE(v time.Time) predicate.PromoCode {
+	return predicate.PromoCode(sql.FieldLTE(FieldUpdatedAt, v))
+}
+
+// HasUsageRecords applies the HasEdge predicate on the "usage_records" edge.
+func HasUsageRecords() predicate.PromoCode {
+	return predicate.PromoCode(func(s *sql.Selector) {
+		step := sqlgraph.NewStep(
+			sqlgraph.From(Table, FieldID),
+			sqlgraph.Edge(sqlgraph.O2M, false, UsageRecordsTable, UsageRecordsColumn),
+		)
+		sqlgraph.HasNeighbors(s, step)
+	})
+}
+
+// HasUsageRecordsWith applies the HasEdge predicate on the "usage_records" edge with a given conditions (other predicates).
+func HasUsageRecordsWith(preds ...predicate.PromoCodeUsage) predicate.PromoCode {
+	return predicate.PromoCode(func(s *sql.Selector) {
+		step := newUsageRecordsStep()
+		sqlgraph.HasNeighborsWith(s, step, func(s *sql.Selector) {
+			for _, p := range preds {
+				p(s)
+			}
+		})
+	})
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.PromoCode) predicate.PromoCode {
+	return predicate.PromoCode(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.PromoCode) predicate.PromoCode {
+	return predicate.PromoCode(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.PromoCode) predicate.PromoCode {
+	return predicate.PromoCode(sql.NotPredicates(p))
+}

backend/ent/promocode_delete.go

@@ -0,0 +1,88 @@
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+)
+
+// PromoCodeDelete is the builder for deleting a PromoCode entity.
+type PromoCodeDelete struct {
+	config
+	hooks    []Hook
+	mutation *PromoCodeMutation
+}
+
+// Where appends a list predicates to the PromoCodeDelete builder.
+func (_d *PromoCodeDelete) Where(ps ...predicate.PromoCode) *PromoCodeDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *PromoCodeDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *PromoCodeDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *PromoCodeDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(promocode.Table, sqlgraph.NewFieldSpec(promocode.FieldID, field.TypeInt64))
+	if ps := _d.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// PromoCodeDeleteOne is the builder for deleting a single PromoCode entity.
+type PromoCodeDeleteOne struct {
+	_d *PromoCodeDelete
+}
+
+// Where appends a list predicates to the PromoCodeDelete builder.
+func (_d *PromoCodeDeleteOne) Where(ps ...predicate.PromoCode) *PromoCodeDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *PromoCodeDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{promocode.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *PromoCodeDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

backend/ent/promocode_query.go

@@ -0,0 +1,643 @@
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"database/sql/driver"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
+)
+
+// PromoCodeQuery is the builder for querying PromoCode entities.
+type PromoCodeQuery struct {
+	config
+	ctx              *QueryContext
+	order            []promocode.OrderOption
+	inters           []Interceptor
+	predicates       []predicate.PromoCode
+	withUsageRecords *PromoCodeUsageQuery
+	modifiers        []func(*sql.Selector)
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the PromoCodeQuery builder.
+func (_q *PromoCodeQuery) Where(ps ...predicate.PromoCode) *PromoCodeQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *PromoCodeQuery) Limit(limit int) *PromoCodeQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *PromoCodeQuery) Offset(offset int) *PromoCodeQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *PromoCodeQuery) Unique(unique bool) *PromoCodeQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *PromoCodeQuery) Order(o ...promocode.OrderOption) *PromoCodeQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// QueryUsageRecords chains the current query on the "usage_records" edge.
+func (_q *PromoCodeQuery) QueryUsageRecords() *PromoCodeUsageQuery {
+	query := (&PromoCodeUsageClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(promocode.Table, promocode.FieldID, selector),
+			sqlgraph.To(promocodeusage.Table, promocodeusage.FieldID),
+			sqlgraph.Edge(sqlgraph.O2M, false, promocode.UsageRecordsTable, promocode.UsageRecordsColumn),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
+// First returns the first PromoCode entity from the query.
+// Returns a *NotFoundError when no PromoCode was found.
+func (_q *PromoCodeQuery) First(ctx context.Context) (*PromoCode, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{promocode.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *PromoCodeQuery) FirstX(ctx context.Context) *PromoCode {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first PromoCode ID from the query.
+// Returns a *NotFoundError when no PromoCode ID was found.
+func (_q *PromoCodeQuery) FirstID(ctx context.Context) (id int64, err error) {
+	var ids []int64
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{promocode.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *PromoCodeQuery) FirstIDX(ctx context.Context) int64 {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single PromoCode entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one PromoCode entity is found.
+// Returns a *NotFoundError when no PromoCode entities are found.
+func (_q *PromoCodeQuery) Only(ctx context.Context) (*PromoCode, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{promocode.Label}
+	default:
+		return nil, &NotSingularError{promocode.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *PromoCodeQuery) OnlyX(ctx context.Context) *PromoCode {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only PromoCode ID in the query.
+// Returns a *NotSingularError when more than one PromoCode ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *PromoCodeQuery) OnlyID(ctx context.Context) (id int64, err error) {
+	var ids []int64
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{promocode.Label}
+	default:
+		err = &NotSingularError{promocode.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *PromoCodeQuery) OnlyIDX(ctx context.Context) int64 {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of PromoCodes.
+func (_q *PromoCodeQuery) All(ctx context.Context) ([]*PromoCode, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*PromoCode, *PromoCodeQuery]()
+	return withInterceptors[[]*PromoCode](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *PromoCodeQuery) AllX(ctx context.Context) []*PromoCode {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of PromoCode IDs.
+func (_q *PromoCodeQuery) IDs(ctx context.Context) (ids []int64, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(promocode.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *PromoCodeQuery) IDsX(ctx context.Context) []int64 {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *PromoCodeQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*PromoCodeQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *PromoCodeQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *PromoCodeQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("ent: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *PromoCodeQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the PromoCodeQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *PromoCodeQuery) Clone() *PromoCodeQuery {
+	if _q == nil {
+		return nil
+	}
+	return &PromoCodeQuery{
+		config:           _q.config,
+		ctx:              _q.ctx.Clone(),
+		order:            append([]promocode.OrderOption{}, _q.order...),
+		inters:           append([]Interceptor{}, _q.inters...),
+		predicates:       append([]predicate.PromoCode{}, _q.predicates...),
+		withUsageRecords: _q.withUsageRecords.Clone(),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// WithUsageRecords tells the query-builder to eager-load the nodes that are connected to
+// the "usage_records" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *PromoCodeQuery) WithUsageRecords(opts ...func(*PromoCodeUsageQuery)) *PromoCodeQuery {
+	query := (&PromoCodeUsageClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withUsageRecords = query
+	return _q
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		Code string `json:"code,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.PromoCode.Query().
+//		GroupBy(promocode.FieldCode).
+//		Aggregate(ent.Count()).
+//		Scan(ctx, &v)
+func (_q *PromoCodeQuery) GroupBy(field string, fields ...string) *PromoCodeGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &PromoCodeGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = promocode.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		Code string `json:"code,omitempty"`
+//	}
+//
+//	client.PromoCode.Query().
+//		Select(promocode.FieldCode).
+//		Scan(ctx, &v)
+func (_q *PromoCodeQuery) Select(fields ...string) *PromoCodeSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &PromoCodeSelect{PromoCodeQuery: _q}
+	sbuild.label = promocode.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a PromoCodeSelect configured with the given aggregations.
+func (_q *PromoCodeQuery) Aggregate(fns ...AggregateFunc) *PromoCodeSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *PromoCodeQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("ent: uninitialized interceptor (forgotten import ent/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !promocode.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *PromoCodeQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*PromoCode, error) {
+	var (
+		nodes       = []*PromoCode{}
+		_spec       = _q.querySpec()
+		loadedTypes = [1]bool{
+			_q.withUsageRecords != nil,
+		}
+	)
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*PromoCode).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &PromoCode{config: _q.config}
+		nodes = append(nodes, node)
+		node.Edges.loadedTypes = loadedTypes
+		return node.assignValues(columns, values)
+	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	if query := _q.withUsageRecords; query != nil {
+		if err := _q.loadUsageRecords(ctx, query, nodes,
+			func(n *PromoCode) { n.Edges.UsageRecords = []*PromoCodeUsage{} },
+			func(n *PromoCode, e *PromoCodeUsage) { n.Edges.UsageRecords = append(n.Edges.UsageRecords, e) }); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+func (_q *PromoCodeQuery) loadUsageRecords(ctx context.Context, query *PromoCodeUsageQuery, nodes []*PromoCode, init func(*PromoCode), assign func(*PromoCode, *PromoCodeUsage)) error {
+	fks := make([]driver.Value, 0, len(nodes))
+	nodeids := make(map[int64]*PromoCode)
+	for i := range nodes {
+		fks = append(fks, nodes[i].ID)
+		nodeids[nodes[i].ID] = nodes[i]
+		if init != nil {
+			init(nodes[i])
+		}
+	}
+	if len(query.ctx.Fields) > 0 {
+		query.ctx.AppendFieldOnce(promocodeusage.FieldPromoCodeID)
+	}
+	query.Where(predicate.PromoCodeUsage(func(s *sql.Selector) {
+		s.Where(sql.InValues(s.C(promocode.UsageRecordsColumn), fks...))
+	}))
+	neighbors, err := query.All(ctx)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		fk := n.PromoCodeID
+		node, ok := nodeids[fk]
+		if !ok {
+			return fmt.Errorf(`unexpected referenced foreign-key "promo_code_id" returned %v for node %v`, fk, n.ID)
+		}
+		assign(node, n)
+	}
+	return nil
+}
+
+func (_q *PromoCodeQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *PromoCodeQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(promocode.Table, promocode.Columns, sqlgraph.NewFieldSpec(promocode.FieldID, field.TypeInt64))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, promocode.FieldID)
+		for i := range fields {
+			if fields[i] != promocode.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *PromoCodeQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(promocode.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = promocode.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *PromoCodeQuery) ForUpdate(opts ...sql.LockOption) *PromoCodeQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *PromoCodeQuery) ForShare(opts ...sql.LockOption) *PromoCodeQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
+// PromoCodeGroupBy is the group-by builder for PromoCode entities.
+type PromoCodeGroupBy struct {
+	selector
+	build *PromoCodeQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *PromoCodeGroupBy) Aggregate(fns ...AggregateFunc) *PromoCodeGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *PromoCodeGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*PromoCodeQuery, *PromoCodeGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *PromoCodeGroupBy) sqlScan(ctx context.Context, root *PromoCodeQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// PromoCodeSelect is the builder for selecting fields of PromoCode entities.
+type PromoCodeSelect struct {
+	*PromoCodeQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *PromoCodeSelect) Aggregate(fns ...AggregateFunc) *PromoCodeSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *PromoCodeSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*PromoCodeQuery, *PromoCodeSelect](ctx, _s.PromoCodeQuery, _s, _s.inters, v)
+}
+
+func (_s *PromoCodeSelect) sqlScan(ctx context.Context, root *PromoCodeQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

backend/ent/promocode_update.go

@@ -0,0 +1,745 @@
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
+)
+
+// PromoCodeUpdate is the builder for updating PromoCode entities.
+type PromoCodeUpdate struct {
+	config
+	hooks    []Hook
+	mutation *PromoCodeMutation
+}
+
+// Where appends a list predicates to the PromoCodeUpdate builder.
+func (_u *PromoCodeUpdate) Where(ps ...predicate.PromoCode) *PromoCodeUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// SetCode sets the "code" field.
+func (_u *PromoCodeUpdate) SetCode(v string) *PromoCodeUpdate {
+	_u.mutation.SetCode(v)
+	return _u
+}
+
+// SetNillableCode sets the "code" field if the given value is not nil.
+func (_u *PromoCodeUpdate) SetNillableCode(v *string) *PromoCodeUpdate {
+	if v != nil {
+		_u.SetCode(*v)
+	}
+	return _u
+}
+
+// SetBonusAmount sets the "bonus_amount" field.
+func (_u *PromoCodeUpdate) SetBonusAmount(v float64) *PromoCodeUpdate {
+	_u.mutation.ResetBonusAmount()
+	_u.mutation.SetBonusAmount(v)
+	return _u
+}
+
+// SetNillableBonusAmount sets the "bonus_amount" field if the given value is not nil.
+func (_u *PromoCodeUpdate) SetNillableBonusAmount(v *float64) *PromoCodeUpdate {
+	if v != nil {
+		_u.SetBonusAmount(*v)
+	}
+	return _u
+}
+
+// AddBonusAmount adds value to the "bonus_amount" field.
+func (_u *PromoCodeUpdate) AddBonusAmount(v float64) *PromoCodeUpdate {
+	_u.mutation.AddBonusAmount(v)
+	return _u
+}
+
+// SetMaxUses sets the "max_uses" field.
+func (_u *PromoCodeUpdate) SetMaxUses(v int) *PromoCodeUpdate {
+	_u.mutation.ResetMaxUses()
+	_u.mutation.SetMaxUses(v)
+	return _u
+}
+
+// SetNillableMaxUses sets the "max_uses" field if the given value is not nil.
+func (_u *PromoCodeUpdate) SetNillableMaxUses(v *int) *PromoCodeUpdate {
+	if v != nil {
+		_u.SetMaxUses(*v)
+	}
+	return _u
+}
+
+// AddMaxUses adds value to the "max_uses" field.
+func (_u *PromoCodeUpdate) AddMaxUses(v int) *PromoCodeUpdate {
+	_u.mutation.AddMaxUses(v)
+	return _u
+}
+
+// SetUsedCount sets the "used_count" field.
+func (_u *PromoCodeUpdate) SetUsedCount(v int) *PromoCodeUpdate {
+	_u.mutation.ResetUsedCount()
+	_u.mutation.SetUsedCount(v)
+	return _u
+}
+
+// SetNillableUsedCount sets the "used_count" field if the given value is not nil.
+func (_u *PromoCodeUpdate) SetNillableUsedCount(v *int) *PromoCodeUpdate {
+	if v != nil {
+		_u.SetUsedCount(*v)
+	}
+	return _u
+}
+
+// AddUsedCount adds value to the "used_count" field.
+func (_u *PromoCodeUpdate) AddUsedCount(v int) *PromoCodeUpdate {
+	_u.mutation.AddUsedCount(v)
+	return _u
+}
+
+// SetStatus sets the "status" field.
+func (_u *PromoCodeUpdate) SetStatus(v string) *PromoCodeUpdate {
+	_u.mutation.SetStatus(v)
+	return _u
+}
+
+// SetNillableStatus sets the "status" field if the given value is not nil.
+func (_u *PromoCodeUpdate) SetNillableStatus(v *string) *PromoCodeUpdate {
+	if v != nil {
+		_u.SetStatus(*v)
+	}
+	return _u
+}
+
+// SetExpiresAt sets the "expires_at" field.
+func (_u *PromoCodeUpdate) SetExpiresAt(v time.Time) *PromoCodeUpdate {
+	_u.mutation.SetExpiresAt(v)
+	return _u
+}
+
+// SetNillableExpiresAt sets the "expires_at" field if the given value is not nil.
+func (_u *PromoCodeUpdate) SetNillableExpiresAt(v *time.Time) *PromoCodeUpdate {
+	if v != nil {
+		_u.SetExpiresAt(*v)
+	}
+	return _u
+}
+
+// ClearExpiresAt clears the value of the "expires_at" field.
+func (_u *PromoCodeUpdate) ClearExpiresAt() *PromoCodeUpdate {
+	_u.mutation.ClearExpiresAt()
+	return _u
+}
+
+// SetNotes sets the "notes" field.
+func (_u *PromoCodeUpdate) SetNotes(v string) *PromoCodeUpdate {
+	_u.mutation.SetNotes(v)
+	return _u
+}
+
+// SetNillableNotes sets the "notes" field if the given value is not nil.
+func (_u *PromoCodeUpdate) SetNillableNotes(v *string) *PromoCodeUpdate {
+	if v != nil {
+		_u.SetNotes(*v)
+	}
+	return _u
+}
+
+// ClearNotes clears the value of the "notes" field.
+func (_u *PromoCodeUpdate) ClearNotes() *PromoCodeUpdate {
+	_u.mutation.ClearNotes()
+	return _u
+}
+
+// SetUpdatedAt sets the "updated_at" field.
+func (_u *PromoCodeUpdate) SetUpdatedAt(v time.Time) *PromoCodeUpdate {
+	_u.mutation.SetUpdatedAt(v)
+	return _u
+}
+
+// AddUsageRecordIDs adds the "usage_records" edge to the PromoCodeUsage entity by IDs.
+func (_u *PromoCodeUpdate) AddUsageRecordIDs(ids ...int64) *PromoCodeUpdate {
+	_u.mutation.AddUsageRecordIDs(ids...)
+	return _u
+}
+
+// AddUsageRecords adds the "usage_records" edges to the PromoCodeUsage entity.
+func (_u *PromoCodeUpdate) AddUsageRecords(v ...*PromoCodeUsage) *PromoCodeUpdate {
+	ids := make([]int64, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.AddUsageRecordIDs(ids...)
+}
+
+// Mutation returns the PromoCodeMutation object of the builder.
+func (_u *PromoCodeUpdate) Mutation() *PromoCodeMutation {
+	return _u.mutation
+}
+
+// ClearUsageRecords clears all "usage_records" edges to the PromoCodeUsage entity.
+func (_u *PromoCodeUpdate) ClearUsageRecords() *PromoCodeUpdate {
+	_u.mutation.ClearUsageRecords()
+	return _u
+}
+
+// RemoveUsageRecordIDs removes the "usage_records" edge to PromoCodeUsage entities by IDs.
+func (_u *PromoCodeUpdate) RemoveUsageRecordIDs(ids ...int64) *PromoCodeUpdate {
+	_u.mutation.RemoveUsageRecordIDs(ids...)
+	return _u
+}
+
+// RemoveUsageRecords removes "usage_records" edges to PromoCodeUsage entities.
+func (_u *PromoCodeUpdate) RemoveUsageRecords(v ...*PromoCodeUsage) *PromoCodeUpdate {
+	ids := make([]int64, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.RemoveUsageRecordIDs(ids...)
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *PromoCodeUpdate) Save(ctx context.Context) (int, error) {
+	_u.defaults()
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *PromoCodeUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *PromoCodeUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *PromoCodeUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// defaults sets the default values of the builder before save.
+func (_u *PromoCodeUpdate) defaults() {
+	if _, ok := _u.mutation.UpdatedAt(); !ok {
+		v := promocode.UpdateDefaultUpdatedAt()
+		_u.mutation.SetUpdatedAt(v)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_u *PromoCodeUpdate) check() error {
+	if v, ok := _u.mutation.Code(); ok {
+		if err := promocode.CodeValidator(v); err != nil {
+			return &ValidationError{Name: "code", err: fmt.Errorf(`ent: validator failed for field "PromoCode.code": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.Status(); ok {
+		if err := promocode.StatusValidator(v); err != nil {
+			return &ValidationError{Name: "status", err: fmt.Errorf(`ent: validator failed for field "PromoCode.status": %w`, err)}
+		}
+	}
+	return nil
+}
+
+func (_u *PromoCodeUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	if err := _u.check(); err != nil {
+		return _node, err
+	}
+	_spec := sqlgraph.NewUpdateSpec(promocode.Table, promocode.Columns, sqlgraph.NewFieldSpec(promocode.FieldID, field.TypeInt64))
+	if ps := _u.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Code(); ok {
+		_spec.SetField(promocode.FieldCode, field.TypeString, value)
+	}
+	if value, ok := _u.mutation.BonusAmount(); ok {
+		_spec.SetField(promocode.FieldBonusAmount, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedBonusAmount(); ok {
+		_spec.AddField(promocode.FieldBonusAmount, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.MaxUses(); ok {
+		_spec.SetField(promocode.FieldMaxUses, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedMaxUses(); ok {
+		_spec.AddField(promocode.FieldMaxUses, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.UsedCount(); ok {
+		_spec.SetField(promocode.FieldUsedCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedUsedCount(); ok {
+		_spec.AddField(promocode.FieldUsedCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.Status(); ok {
+		_spec.SetField(promocode.FieldStatus, field.TypeString, value)
+	}
+	if value, ok := _u.mutation.ExpiresAt(); ok {
+		_spec.SetField(promocode.FieldExpiresAt, field.TypeTime, value)
+	}
+	if _u.mutation.ExpiresAtCleared() {
+		_spec.ClearField(promocode.FieldExpiresAt, field.TypeTime)
+	}
+	if value, ok := _u.mutation.Notes(); ok {
+		_spec.SetField(promocode.FieldNotes, field.TypeString, value)
+	}
+	if _u.mutation.NotesCleared() {
+		_spec.ClearField(promocode.FieldNotes, field.TypeString)
+	}
+	if value, ok := _u.mutation.UpdatedAt(); ok {
+		_spec.SetField(promocode.FieldUpdatedAt, field.TypeTime, value)
+	}
+	if _u.mutation.UsageRecordsCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   promocode.UsageRecordsTable,
+			Columns: []string{promocode.UsageRecordsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.RemovedUsageRecordsIDs(); len(nodes) > 0 && !_u.mutation.UsageRecordsCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   promocode.UsageRecordsTable,
+			Columns: []string{promocode.UsageRecordsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.UsageRecordsIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   promocode.UsageRecordsTable,
+			Columns: []string{promocode.UsageRecordsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{promocode.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// PromoCodeUpdateOne is the builder for updating a single PromoCode entity.
+type PromoCodeUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *PromoCodeMutation
+}
+
+// SetCode sets the "code" field.
+func (_u *PromoCodeUpdateOne) SetCode(v string) *PromoCodeUpdateOne {
+	_u.mutation.SetCode(v)
+	return _u
+}
+
+// SetNillableCode sets the "code" field if the given value is not nil.
+func (_u *PromoCodeUpdateOne) SetNillableCode(v *string) *PromoCodeUpdateOne {
+	if v != nil {
+		_u.SetCode(*v)
+	}
+	return _u
+}
+
+// SetBonusAmount sets the "bonus_amount" field.
+func (_u *PromoCodeUpdateOne) SetBonusAmount(v float64) *PromoCodeUpdateOne {
+	_u.mutation.ResetBonusAmount()
+	_u.mutation.SetBonusAmount(v)
+	return _u
+}
+
+// SetNillableBonusAmount sets the "bonus_amount" field if the given value is not nil.
+func (_u *PromoCodeUpdateOne) SetNillableBonusAmount(v *float64) *PromoCodeUpdateOne {
+	if v != nil {
+		_u.SetBonusAmount(*v)
+	}
+	return _u
+}
+
+// AddBonusAmount adds value to the "bonus_amount" field.
+func (_u *PromoCodeUpdateOne) AddBonusAmount(v float64) *PromoCodeUpdateOne {
+	_u.mutation.AddBonusAmount(v)
+	return _u
+}
+
+// SetMaxUses sets the "max_uses" field.
+func (_u *PromoCodeUpdateOne) SetMaxUses(v int) *PromoCodeUpdateOne {
+	_u.mutation.ResetMaxUses()
+	_u.mutation.SetMaxUses(v)
+	return _u
+}
+
+// SetNillableMaxUses sets the "max_uses" field if the given value is not nil.
+func (_u *PromoCodeUpdateOne) SetNillableMaxUses(v *int) *PromoCodeUpdateOne {
+	if v != nil {
+		_u.SetMaxUses(*v)
+	}
+	return _u
+}
+
+// AddMaxUses adds value to the "max_uses" field.
+func (_u *PromoCodeUpdateOne) AddMaxUses(v int) *PromoCodeUpdateOne {
+	_u.mutation.AddMaxUses(v)
+	return _u
+}
+
+// SetUsedCount sets the "used_count" field.
+func (_u *PromoCodeUpdateOne) SetUsedCount(v int) *PromoCodeUpdateOne {
+	_u.mutation.ResetUsedCount()
+	_u.mutation.SetUsedCount(v)
+	return _u
+}
+
+// SetNillableUsedCount sets the "used_count" field if the given value is not nil.
+func (_u *PromoCodeUpdateOne) SetNillableUsedCount(v *int) *PromoCodeUpdateOne {
+	if v != nil {
+		_u.SetUsedCount(*v)
+	}
+	return _u
+}
+
+// AddUsedCount adds value to the "used_count" field.
+func (_u *PromoCodeUpdateOne) AddUsedCount(v int) *PromoCodeUpdateOne {
+	_u.mutation.AddUsedCount(v)
+	return _u
+}
+
+// SetStatus sets the "status" field.
+func (_u *PromoCodeUpdateOne) SetStatus(v string) *PromoCodeUpdateOne {
+	_u.mutation.SetStatus(v)
+	return _u
+}
+
+// SetNillableStatus sets the "status" field if the given value is not nil.
+func (_u *PromoCodeUpdateOne) SetNillableStatus(v *string) *PromoCodeUpdateOne {
+	if v != nil {
+		_u.SetStatus(*v)
+	}
+	return _u
+}
+
+// SetExpiresAt sets the "expires_at" field.
+func (_u *PromoCodeUpdateOne) SetExpiresAt(v time.Time) *PromoCodeUpdateOne {
+	_u.mutation.SetExpiresAt(v)
+	return _u
+}
+
+// SetNillableExpiresAt sets the "expires_at" field if the given value is not nil.
+func (_u *PromoCodeUpdateOne) SetNillableExpiresAt(v *time.Time) *PromoCodeUpdateOne {
+	if v != nil {
+		_u.SetExpiresAt(*v)
+	}
+	return _u
+}
+
+// ClearExpiresAt clears the value of the "expires_at" field.
+func (_u *PromoCodeUpdateOne) ClearExpiresAt() *PromoCodeUpdateOne {
+	_u.mutation.ClearExpiresAt()
+	return _u
+}
+
+// SetNotes sets the "notes" field.
+func (_u *PromoCodeUpdateOne) SetNotes(v string) *PromoCodeUpdateOne {
+	_u.mutation.SetNotes(v)
+	return _u
+}
+
+// SetNillableNotes sets the "notes" field if the given value is not nil.
+func (_u *PromoCodeUpdateOne) SetNillableNotes(v *string) *PromoCodeUpdateOne {
+	if v != nil {
+		_u.SetNotes(*v)
+	}
+	return _u
+}
+
+// ClearNotes clears the value of the "notes" field.
+func (_u *PromoCodeUpdateOne) ClearNotes() *PromoCodeUpdateOne {
+	_u.mutation.ClearNotes()
+	return _u
+}
+
+// SetUpdatedAt sets the "updated_at" field.
+func (_u *PromoCodeUpdateOne) SetUpdatedAt(v time.Time) *PromoCodeUpdateOne {
+	_u.mutation.SetUpdatedAt(v)
+	return _u
+}
+
+// AddUsageRecordIDs adds the "usage_records" edge to the PromoCodeUsage entity by IDs.
+func (_u *PromoCodeUpdateOne) AddUsageRecordIDs(ids ...int64) *PromoCodeUpdateOne {
+	_u.mutation.AddUsageRecordIDs(ids...)
+	return _u
+}
+
+// AddUsageRecords adds the "usage_records" edges to the PromoCodeUsage entity.
+func (_u *PromoCodeUpdateOne) AddUsageRecords(v ...*PromoCodeUsage) *PromoCodeUpdateOne {
+	ids := make([]int64, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.AddUsageRecordIDs(ids...)
+}
+
+// Mutation returns the PromoCodeMutation object of the builder.
+func (_u *PromoCodeUpdateOne) Mutation() *PromoCodeMutation {
+	return _u.mutation
+}
+
+// ClearUsageRecords clears all "usage_records" edges to the PromoCodeUsage entity.
+func (_u *PromoCodeUpdateOne) ClearUsageRecords() *PromoCodeUpdateOne {
+	_u.mutation.ClearUsageRecords()
+	return _u
+}
+
+// RemoveUsageRecordIDs removes the "usage_records" edge to PromoCodeUsage entities by IDs.
+func (_u *PromoCodeUpdateOne) RemoveUsageRecordIDs(ids ...int64) *PromoCodeUpdateOne {
+	_u.mutation.RemoveUsageRecordIDs(ids...)
+	return _u
+}
+
+// RemoveUsageRecords removes "usage_records" edges to PromoCodeUsage entities.
+func (_u *PromoCodeUpdateOne) RemoveUsageRecords(v ...*PromoCodeUsage) *PromoCodeUpdateOne {
+	ids := make([]int64, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.RemoveUsageRecordIDs(ids...)
+}
+
+// Where appends a list predicates to the PromoCodeUpdate builder.
+func (_u *PromoCodeUpdateOne) Where(ps ...predicate.PromoCode) *PromoCodeUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *PromoCodeUpdateOne) Select(field string, fields ...string) *PromoCodeUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated PromoCode entity.
+func (_u *PromoCodeUpdateOne) Save(ctx context.Context) (*PromoCode, error) {
+	_u.defaults()
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *PromoCodeUpdateOne) SaveX(ctx context.Context) *PromoCode {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *PromoCodeUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *PromoCodeUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// defaults sets the default values of the builder before save.
+func (_u *PromoCodeUpdateOne) defaults() {
+	if _, ok := _u.mutation.UpdatedAt(); !ok {
+		v := promocode.UpdateDefaultUpdatedAt()
+		_u.mutation.SetUpdatedAt(v)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_u *PromoCodeUpdateOne) check() error {
+	if v, ok := _u.mutation.Code(); ok {
+		if err := promocode.CodeValidator(v); err != nil {
+			return &ValidationError{Name: "code", err: fmt.Errorf(`ent: validator failed for field "PromoCode.code": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.Status(); ok {
+		if err := promocode.StatusValidator(v); err != nil {
+			return &ValidationError{Name: "status", err: fmt.Errorf(`ent: validator failed for field "PromoCode.status": %w`, err)}
+		}
+	}
+	return nil
+}
+
+func (_u *PromoCodeUpdateOne) sqlSave(ctx context.Context) (_node *PromoCode, err error) {
+	if err := _u.check(); err != nil {
+		return _node, err
+	}
+	_spec := sqlgraph.NewUpdateSpec(promocode.Table, promocode.Columns, sqlgraph.NewFieldSpec(promocode.FieldID, field.TypeInt64))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`ent: missing "PromoCode.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, promocode.FieldID)
+		for _, f := range fields {
+			if !promocode.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
+			}
+			if f != promocode.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.Code(); ok {
+		_spec.SetField(promocode.FieldCode, field.TypeString, value)
+	}
+	if value, ok := _u.mutation.BonusAmount(); ok {
+		_spec.SetField(promocode.FieldBonusAmount, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedBonusAmount(); ok {
+		_spec.AddField(promocode.FieldBonusAmount, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.MaxUses(); ok {
+		_spec.SetField(promocode.FieldMaxUses, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedMaxUses(); ok {
+		_spec.AddField(promocode.FieldMaxUses, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.UsedCount(); ok {
+		_spec.SetField(promocode.FieldUsedCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedUsedCount(); ok {
+		_spec.AddField(promocode.FieldUsedCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.Status(); ok {
+		_spec.SetField(promocode.FieldStatus, field.TypeString, value)
+	}
+	if value, ok := _u.mutation.ExpiresAt(); ok {
+		_spec.SetField(promocode.FieldExpiresAt, field.TypeTime, value)
+	}
+	if _u.mutation.ExpiresAtCleared() {
+		_spec.ClearField(promocode.FieldExpiresAt, field.TypeTime)
+	}
+	if value, ok := _u.mutation.Notes(); ok {
+		_spec.SetField(promocode.FieldNotes, field.TypeString, value)
+	}
+	if _u.mutation.NotesCleared() {
+		_spec.ClearField(promocode.FieldNotes, field.TypeString)
+	}
+	if value, ok := _u.mutation.UpdatedAt(); ok {
+		_spec.SetField(promocode.FieldUpdatedAt, field.TypeTime, value)
+	}
+	if _u.mutation.UsageRecordsCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   promocode.UsageRecordsTable,
+			Columns: []string{promocode.UsageRecordsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.RemovedUsageRecordsIDs(); len(nodes) > 0 && !_u.mutation.UsageRecordsCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   promocode.UsageRecordsTable,
+			Columns: []string{promocode.UsageRecordsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.UsageRecordsIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   promocode.UsageRecordsTable,
+			Columns: []string{promocode.UsageRecordsColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	_node = &PromoCode{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{promocode.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}

backend/ent/promocodeusage.go

@@ -0,0 +1,187 @@
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect/sql"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
+	"github.com/Wei-Shaw/sub2api/ent/user"
+)
+
+// PromoCodeUsage is the model entity for the PromoCodeUsage schema.
+type PromoCodeUsage struct {
+	config `json:"-"`
+	// ID of the ent.
+	ID int64 `json:"id,omitempty"`
+	// 优惠码ID
+	PromoCodeID int64 `json:"promo_code_id,omitempty"`
+	// 使用用户ID
+	UserID int64 `json:"user_id,omitempty"`
+	// 实际赠送金额
+	BonusAmount float64 `json:"bonus_amount,omitempty"`
+	// 使用时间
+	UsedAt time.Time `json:"used_at,omitempty"`
+	// Edges holds the relations/edges for other nodes in the graph.
+	// The values are being populated by the PromoCodeUsageQuery when eager-loading is set.
+	Edges        PromoCodeUsageEdges `json:"edges"`
+	selectValues sql.SelectValues
+}
+
+// PromoCodeUsageEdges holds the relations/edges for other nodes in the graph.
+type PromoCodeUsageEdges struct {
+	// PromoCode holds the value of the promo_code edge.
+	PromoCode *PromoCode `json:"promo_code,omitempty"`
+	// User holds the value of the user edge.
+	User *User `json:"user,omitempty"`
+	// loadedTypes holds the information for reporting if a
+	// type was loaded (or requested) in eager-loading or not.
+	loadedTypes [2]bool
+}
+
+// PromoCodeOrErr returns the PromoCode value or an error if the edge
+// was not loaded in eager-loading, or loaded but was not found.
+func (e PromoCodeUsageEdges) PromoCodeOrErr() (*PromoCode, error) {
+	if e.PromoCode != nil {
+		return e.PromoCode, nil
+	} else if e.loadedTypes[0] {
+		return nil, &NotFoundError{label: promocode.Label}
+	}
+	return nil, &NotLoadedError{edge: "promo_code"}
+}
+
+// UserOrErr returns the User value or an error if the edge
+// was not loaded in eager-loading, or loaded but was not found.
+func (e PromoCodeUsageEdges) UserOrErr() (*User, error) {
+	if e.User != nil {
+		return e.User, nil
+	} else if e.loadedTypes[1] {
+		return nil, &NotFoundError{label: user.Label}
+	}
+	return nil, &NotLoadedError{edge: "user"}
+}
+
+// scanValues returns the types for scanning values from sql.Rows.
+func (*PromoCodeUsage) scanValues(columns []string) ([]any, error) {
+	values := make([]any, len(columns))
+	for i := range columns {
+		switch columns[i] {
+		case promocodeusage.FieldBonusAmount:
+			values[i] = new(sql.NullFloat64)
+		case promocodeusage.FieldID, promocodeusage.FieldPromoCodeID, promocodeusage.FieldUserID:
+			values[i] = new(sql.NullInt64)
+		case promocodeusage.FieldUsedAt:
+			values[i] = new(sql.NullTime)
+		default:
+			values[i] = new(sql.UnknownType)
+		}
+	}
+	return values, nil
+}
+
+// assignValues assigns the values that were returned from sql.Rows (after scanning)
+// to the PromoCodeUsage fields.
+func (_m *PromoCodeUsage) assignValues(columns []string, values []any) error {
+	if m, n := len(values), len(columns); m < n {
+		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
+	}
+	for i := range columns {
+		switch columns[i] {
+		case promocodeusage.FieldID:
+			value, ok := values[i].(*sql.NullInt64)
+			if !ok {
+				return fmt.Errorf("unexpected type %T for field id", value)
+			}
+			_m.ID = int64(value.Int64)
+		case promocodeusage.FieldPromoCodeID:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field promo_code_id", values[i])
+			} else if value.Valid {
+				_m.PromoCodeID = value.Int64
+			}
+		case promocodeusage.FieldUserID:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field user_id", values[i])
+			} else if value.Valid {
+				_m.UserID = value.Int64
+			}
+		case promocodeusage.FieldBonusAmount:
+			if value, ok := values[i].(*sql.NullFloat64); !ok {
+				return fmt.Errorf("unexpected type %T for field bonus_amount", values[i])
+			} else if value.Valid {
+				_m.BonusAmount = value.Float64
+			}
+		case promocodeusage.FieldUsedAt:
+			if value, ok := values[i].(*sql.NullTime); !ok {
+				return fmt.Errorf("unexpected type %T for field used_at", values[i])
+			} else if value.Valid {
+				_m.UsedAt = value.Time
+			}
+		default:
+			_m.selectValues.Set(columns[i], values[i])
+		}
+	}
+	return nil
+}
+
+// Value returns the ent.Value that was dynamically selected and assigned to the PromoCodeUsage.
+// This includes values selected through modifiers, order, etc.
+func (_m *PromoCodeUsage) Value(name string) (ent.Value, error) {
+	return _m.selectValues.Get(name)
+}
+
+// QueryPromoCode queries the "promo_code" edge of the PromoCodeUsage entity.
+func (_m *PromoCodeUsage) QueryPromoCode() *PromoCodeQuery {
+	return NewPromoCodeUsageClient(_m.config).QueryPromoCode(_m)
+}
+
+// QueryUser queries the "user" edge of the PromoCodeUsage entity.
+func (_m *PromoCodeUsage) QueryUser() *UserQuery {
+	return NewPromoCodeUsageClient(_m.config).QueryUser(_m)
+}
+
+// Update returns a builder for updating this PromoCodeUsage.
+// Note that you need to call PromoCodeUsage.Unwrap() before calling this method if this PromoCodeUsage
+// was returned from a transaction, and the transaction was committed or rolled back.
+func (_m *PromoCodeUsage) Update() *PromoCodeUsageUpdateOne {
+	return NewPromoCodeUsageClient(_m.config).UpdateOne(_m)
+}
+
+// Unwrap unwraps the PromoCodeUsage entity that was returned from a transaction after it was closed,
+// so that all future queries will be executed through the driver which created the transaction.
+func (_m *PromoCodeUsage) Unwrap() *PromoCodeUsage {
+	_tx, ok := _m.config.driver.(*txDriver)
+	if !ok {
+		panic("ent: PromoCodeUsage is not a transactional entity")
+	}
+	_m.config.driver = _tx.drv
+	return _m
+}
+
+// String implements the fmt.Stringer.
+func (_m *PromoCodeUsage) String() string {
+	var builder strings.Builder
+	builder.WriteString("PromoCodeUsage(")
+	builder.WriteString(fmt.Sprintf("id=%v, ", _m.ID))
+	builder.WriteString("promo_code_id=")
+	builder.WriteString(fmt.Sprintf("%v", _m.PromoCodeID))
+	builder.WriteString(", ")
+	builder.WriteString("user_id=")
+	builder.WriteString(fmt.Sprintf("%v", _m.UserID))
+	builder.WriteString(", ")
+	builder.WriteString("bonus_amount=")
+	builder.WriteString(fmt.Sprintf("%v", _m.BonusAmount))
+	builder.WriteString(", ")
+	builder.WriteString("used_at=")
+	builder.WriteString(_m.UsedAt.Format(time.ANSIC))
+	builder.WriteByte(')')
+	return builder.String()
+}
+
+// PromoCodeUsages is a parsable slice of PromoCodeUsage.
+type PromoCodeUsages []*PromoCodeUsage

backend/ent/promocodeusage/promocodeusage.go

@@ -0,0 +1,125 @@
+// Code generated by ent, DO NOT EDIT.
+
+package promocodeusage
+
+import (
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+)
+
+const (
+	// Label holds the string label denoting the promocodeusage type in the database.
+	Label = "promo_code_usage"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldPromoCodeID holds the string denoting the promo_code_id field in the database.
+	FieldPromoCodeID = "promo_code_id"
+	// FieldUserID holds the string denoting the user_id field in the database.
+	FieldUserID = "user_id"
+	// FieldBonusAmount holds the string denoting the bonus_amount field in the database.
+	FieldBonusAmount = "bonus_amount"
+	// FieldUsedAt holds the string denoting the used_at field in the database.
+	FieldUsedAt = "used_at"
+	// EdgePromoCode holds the string denoting the promo_code edge name in mutations.
+	EdgePromoCode = "promo_code"
+	// EdgeUser holds the string denoting the user edge name in mutations.
+	EdgeUser = "user"
+	// Table holds the table name of the promocodeusage in the database.
+	Table = "promo_code_usages"
+	// PromoCodeTable is the table that holds the promo_code relation/edge.
+	PromoCodeTable = "promo_code_usages"
+	// PromoCodeInverseTable is the table name for the PromoCode entity.
+	// It exists in this package in order to avoid circular dependency with the "promocode" package.
+	PromoCodeInverseTable = "promo_codes"
+	// PromoCodeColumn is the table column denoting the promo_code relation/edge.
+	PromoCodeColumn = "promo_code_id"
+	// UserTable is the table that holds the user relation/edge.
+	UserTable = "promo_code_usages"
+	// UserInverseTable is the table name for the User entity.
+	// It exists in this package in order to avoid circular dependency with the "user" package.
+	UserInverseTable = "users"
+	// UserColumn is the table column denoting the user relation/edge.
+	UserColumn = "user_id"
+)
+
+// Columns holds all SQL columns for promocodeusage fields.
+var Columns = []string{
+	FieldID,
+	FieldPromoCodeID,
+	FieldUserID,
+	FieldBonusAmount,
+	FieldUsedAt,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+var (
+	// DefaultUsedAt holds the default value on creation for the "used_at" field.
+	DefaultUsedAt func() time.Time
+)
+
+// OrderOption defines the ordering options for the PromoCodeUsage queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByPromoCodeID orders the results by the promo_code_id field.
+func ByPromoCodeID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldPromoCodeID, opts...).ToFunc()
+}
+
+// ByUserID orders the results by the user_id field.
+func ByUserID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldUserID, opts...).ToFunc()
+}
+
+// ByBonusAmount orders the results by the bonus_amount field.
+func ByBonusAmount(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldBonusAmount, opts...).ToFunc()
+}
+
+// ByUsedAt orders the results by the used_at field.
+func ByUsedAt(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldUsedAt, opts...).ToFunc()
+}
+
+// ByPromoCodeField orders the results by promo_code field.
+func ByPromoCodeField(field string, opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newPromoCodeStep(), sql.OrderByField(field, opts...))
+	}
+}
+
+// ByUserField orders the results by user field.
+func ByUserField(field string, opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newUserStep(), sql.OrderByField(field, opts...))
+	}
+}
+func newPromoCodeStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(PromoCodeInverseTable, FieldID),
+		sqlgraph.Edge(sqlgraph.M2O, true, PromoCodeTable, PromoCodeColumn),
+	)
+}
+func newUserStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(UserInverseTable, FieldID),
+		sqlgraph.Edge(sqlgraph.M2O, true, UserTable, UserColumn),
+	)
+}

backend/ent/promocodeusage/where.go

@@ -0,0 +1,257 @@
+// Code generated by ent, DO NOT EDIT.
+
+package promocodeusage
+
+import (
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+)
+
+// ID filters vertices based on their ID field.
+func ID(id int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldID, id))
+}
+
+// IDEQ applies the EQ predicate on the ID field.
+func IDEQ(id int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldID, id))
+}
+
+// IDNEQ applies the NEQ predicate on the ID field.
+func IDNEQ(id int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNEQ(FieldID, id))
+}
+
+// IDIn applies the In predicate on the ID field.
+func IDIn(ids ...int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldIn(FieldID, ids...))
+}
+
+// IDNotIn applies the NotIn predicate on the ID field.
+func IDNotIn(ids ...int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNotIn(FieldID, ids...))
+}
+
+// IDGT applies the GT predicate on the ID field.
+func IDGT(id int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldGT(FieldID, id))
+}
+
+// IDGTE applies the GTE predicate on the ID field.
+func IDGTE(id int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldGTE(FieldID, id))
+}
+
+// IDLT applies the LT predicate on the ID field.
+func IDLT(id int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldLT(FieldID, id))
+}
+
+// IDLTE applies the LTE predicate on the ID field.
+func IDLTE(id int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldLTE(FieldID, id))
+}
+
+// PromoCodeID applies equality check predicate on the "promo_code_id" field. It's identical to PromoCodeIDEQ.
+func PromoCodeID(v int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldPromoCodeID, v))
+}
+
+// UserID applies equality check predicate on the "user_id" field. It's identical to UserIDEQ.
+func UserID(v int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldUserID, v))
+}
+
+// BonusAmount applies equality check predicate on the "bonus_amount" field. It's identical to BonusAmountEQ.
+func BonusAmount(v float64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldBonusAmount, v))
+}
+
+// UsedAt applies equality check predicate on the "used_at" field. It's identical to UsedAtEQ.
+func UsedAt(v time.Time) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldUsedAt, v))
+}
+
+// PromoCodeIDEQ applies the EQ predicate on the "promo_code_id" field.
+func PromoCodeIDEQ(v int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldPromoCodeID, v))
+}
+
+// PromoCodeIDNEQ applies the NEQ predicate on the "promo_code_id" field.
+func PromoCodeIDNEQ(v int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNEQ(FieldPromoCodeID, v))
+}
+
+// PromoCodeIDIn applies the In predicate on the "promo_code_id" field.
+func PromoCodeIDIn(vs ...int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldIn(FieldPromoCodeID, vs...))
+}
+
+// PromoCodeIDNotIn applies the NotIn predicate on the "promo_code_id" field.
+func PromoCodeIDNotIn(vs ...int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNotIn(FieldPromoCodeID, vs...))
+}
+
+// UserIDEQ applies the EQ predicate on the "user_id" field.
+func UserIDEQ(v int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldUserID, v))
+}
+
+// UserIDNEQ applies the NEQ predicate on the "user_id" field.
+func UserIDNEQ(v int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNEQ(FieldUserID, v))
+}
+
+// UserIDIn applies the In predicate on the "user_id" field.
+func UserIDIn(vs ...int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldIn(FieldUserID, vs...))
+}
+
+// UserIDNotIn applies the NotIn predicate on the "user_id" field.
+func UserIDNotIn(vs ...int64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNotIn(FieldUserID, vs...))
+}
+
+// BonusAmountEQ applies the EQ predicate on the "bonus_amount" field.
+func BonusAmountEQ(v float64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldBonusAmount, v))
+}
+
+// BonusAmountNEQ applies the NEQ predicate on the "bonus_amount" field.
+func BonusAmountNEQ(v float64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNEQ(FieldBonusAmount, v))
+}
+
+// BonusAmountIn applies the In predicate on the "bonus_amount" field.
+func BonusAmountIn(vs ...float64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldIn(FieldBonusAmount, vs...))
+}
+
+// BonusAmountNotIn applies the NotIn predicate on the "bonus_amount" field.
+func BonusAmountNotIn(vs ...float64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNotIn(FieldBonusAmount, vs...))
+}
+
+// BonusAmountGT applies the GT predicate on the "bonus_amount" field.
+func BonusAmountGT(v float64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldGT(FieldBonusAmount, v))
+}
+
+// BonusAmountGTE applies the GTE predicate on the "bonus_amount" field.
+func BonusAmountGTE(v float64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldGTE(FieldBonusAmount, v))
+}
+
+// BonusAmountLT applies the LT predicate on the "bonus_amount" field.
+func BonusAmountLT(v float64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldLT(FieldBonusAmount, v))
+}
+
+// BonusAmountLTE applies the LTE predicate on the "bonus_amount" field.
+func BonusAmountLTE(v float64) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldLTE(FieldBonusAmount, v))
+}
+
+// UsedAtEQ applies the EQ predicate on the "used_at" field.
+func UsedAtEQ(v time.Time) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldEQ(FieldUsedAt, v))
+}
+
+// UsedAtNEQ applies the NEQ predicate on the "used_at" field.
+func UsedAtNEQ(v time.Time) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNEQ(FieldUsedAt, v))
+}
+
+// UsedAtIn applies the In predicate on the "used_at" field.
+func UsedAtIn(vs ...time.Time) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldIn(FieldUsedAt, vs...))
+}
+
+// UsedAtNotIn applies the NotIn predicate on the "used_at" field.
+func UsedAtNotIn(vs ...time.Time) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldNotIn(FieldUsedAt, vs...))
+}
+
+// UsedAtGT applies the GT predicate on the "used_at" field.
+func UsedAtGT(v time.Time) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldGT(FieldUsedAt, v))
+}
+
+// UsedAtGTE applies the GTE predicate on the "used_at" field.
+func UsedAtGTE(v time.Time) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldGTE(FieldUsedAt, v))
+}
+
+// UsedAtLT applies the LT predicate on the "used_at" field.
+func UsedAtLT(v time.Time) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldLT(FieldUsedAt, v))
+}
+
+// UsedAtLTE applies the LTE predicate on the "used_at" field.
+func UsedAtLTE(v time.Time) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.FieldLTE(FieldUsedAt, v))
+}
+
+// HasPromoCode applies the HasEdge predicate on the "promo_code" edge.
+func HasPromoCode() predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(func(s *sql.Selector) {
+		step := sqlgraph.NewStep(
+			sqlgraph.From(Table, FieldID),
+			sqlgraph.Edge(sqlgraph.M2O, true, PromoCodeTable, PromoCodeColumn),
+		)
+		sqlgraph.HasNeighbors(s, step)
+	})
+}
+
+// HasPromoCodeWith applies the HasEdge predicate on the "promo_code" edge with a given conditions (other predicates).
+func HasPromoCodeWith(preds ...predicate.PromoCode) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(func(s *sql.Selector) {
+		step := newPromoCodeStep()
+		sqlgraph.HasNeighborsWith(s, step, func(s *sql.Selector) {
+			for _, p := range preds {
+				p(s)
+			}
+		})
+	})
+}
+
+// HasUser applies the HasEdge predicate on the "user" edge.
+func HasUser() predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(func(s *sql.Selector) {
+		step := sqlgraph.NewStep(
+			sqlgraph.From(Table, FieldID),
+			sqlgraph.Edge(sqlgraph.M2O, true, UserTable, UserColumn),
+		)
+		sqlgraph.HasNeighbors(s, step)
+	})
+}
+
+// HasUserWith applies the HasEdge predicate on the "user" edge with a given conditions (other predicates).
+func HasUserWith(preds ...predicate.User) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(func(s *sql.Selector) {
+		step := newUserStep()
+		sqlgraph.HasNeighborsWith(s, step, func(s *sql.Selector) {
+			for _, p := range preds {
+				p(s)
+			}
+		})
+	})
+}
+
+// And groups predicates with the AND operator between them.
+func And(predicates ...predicate.PromoCodeUsage) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.AndPredicates(predicates...))
+}
+
+// Or groups predicates with the OR operator between them.
+func Or(predicates ...predicate.PromoCodeUsage) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.OrPredicates(predicates...))
+}
+
+// Not applies the not operator on the given predicate.
+func Not(p predicate.PromoCodeUsage) predicate.PromoCodeUsage {
+	return predicate.PromoCodeUsage(sql.NotPredicates(p))
+}

backend/ent/promocodeusage_create.go

@@ -0,0 +1,696 @@
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
+	"github.com/Wei-Shaw/sub2api/ent/user"
+)
+
+// PromoCodeUsageCreate is the builder for creating a PromoCodeUsage entity.
+type PromoCodeUsageCreate struct {
+	config
+	mutation *PromoCodeUsageMutation
+	hooks    []Hook
+	conflict []sql.ConflictOption
+}
+
+// SetPromoCodeID sets the "promo_code_id" field.
+func (_c *PromoCodeUsageCreate) SetPromoCodeID(v int64) *PromoCodeUsageCreate {
+	_c.mutation.SetPromoCodeID(v)
+	return _c
+}
+
+// SetUserID sets the "user_id" field.
+func (_c *PromoCodeUsageCreate) SetUserID(v int64) *PromoCodeUsageCreate {
+	_c.mutation.SetUserID(v)
+	return _c
+}
+
+// SetBonusAmount sets the "bonus_amount" field.
+func (_c *PromoCodeUsageCreate) SetBonusAmount(v float64) *PromoCodeUsageCreate {
+	_c.mutation.SetBonusAmount(v)
+	return _c
+}
+
+// SetUsedAt sets the "used_at" field.
+func (_c *PromoCodeUsageCreate) SetUsedAt(v time.Time) *PromoCodeUsageCreate {
+	_c.mutation.SetUsedAt(v)
+	return _c
+}
+
+// SetNillableUsedAt sets the "used_at" field if the given value is not nil.
+func (_c *PromoCodeUsageCreate) SetNillableUsedAt(v *time.Time) *PromoCodeUsageCreate {
+	if v != nil {
+		_c.SetUsedAt(*v)
+	}
+	return _c
+}
+
+// SetPromoCode sets the "promo_code" edge to the PromoCode entity.
+func (_c *PromoCodeUsageCreate) SetPromoCode(v *PromoCode) *PromoCodeUsageCreate {
+	return _c.SetPromoCodeID(v.ID)
+}
+
+// SetUser sets the "user" edge to the User entity.
+func (_c *PromoCodeUsageCreate) SetUser(v *User) *PromoCodeUsageCreate {
+	return _c.SetUserID(v.ID)
+}
+
+// Mutation returns the PromoCodeUsageMutation object of the builder.
+func (_c *PromoCodeUsageCreate) Mutation() *PromoCodeUsageMutation {
+	return _c.mutation
+}
+
+// Save creates the PromoCodeUsage in the database.
+func (_c *PromoCodeUsageCreate) Save(ctx context.Context) (*PromoCodeUsage, error) {
+	_c.defaults()
+	return withHooks(ctx, _c.sqlSave, _c.mutation, _c.hooks)
+}
+
+// SaveX calls Save and panics if Save returns an error.
+func (_c *PromoCodeUsageCreate) SaveX(ctx context.Context) *PromoCodeUsage {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *PromoCodeUsageCreate) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *PromoCodeUsageCreate) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// defaults sets the default values of the builder before save.
+func (_c *PromoCodeUsageCreate) defaults() {
+	if _, ok := _c.mutation.UsedAt(); !ok {
+		v := promocodeusage.DefaultUsedAt()
+		_c.mutation.SetUsedAt(v)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_c *PromoCodeUsageCreate) check() error {
+	if _, ok := _c.mutation.PromoCodeID(); !ok {
+		return &ValidationError{Name: "promo_code_id", err: errors.New(`ent: missing required field "PromoCodeUsage.promo_code_id"`)}
+	}
+	if _, ok := _c.mutation.UserID(); !ok {
+		return &ValidationError{Name: "user_id", err: errors.New(`ent: missing required field "PromoCodeUsage.user_id"`)}
+	}
+	if _, ok := _c.mutation.BonusAmount(); !ok {
+		return &ValidationError{Name: "bonus_amount", err: errors.New(`ent: missing required field "PromoCodeUsage.bonus_amount"`)}
+	}
+	if _, ok := _c.mutation.UsedAt(); !ok {
+		return &ValidationError{Name: "used_at", err: errors.New(`ent: missing required field "PromoCodeUsage.used_at"`)}
+	}
+	if len(_c.mutation.PromoCodeIDs()) == 0 {
+		return &ValidationError{Name: "promo_code", err: errors.New(`ent: missing required edge "PromoCodeUsage.promo_code"`)}
+	}
+	if len(_c.mutation.UserIDs()) == 0 {
+		return &ValidationError{Name: "user", err: errors.New(`ent: missing required edge "PromoCodeUsage.user"`)}
+	}
+	return nil
+}
+
+func (_c *PromoCodeUsageCreate) sqlSave(ctx context.Context) (*PromoCodeUsage, error) {
+	if err := _c.check(); err != nil {
+		return nil, err
+	}
+	_node, _spec := _c.createSpec()
+	if err := sqlgraph.CreateNode(ctx, _c.driver, _spec); err != nil {
+		if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	id := _spec.ID.Value.(int64)
+	_node.ID = int64(id)
+	_c.mutation.id = &_node.ID
+	_c.mutation.done = true
+	return _node, nil
+}
+
+func (_c *PromoCodeUsageCreate) createSpec() (*PromoCodeUsage, *sqlgraph.CreateSpec) {
+	var (
+		_node = &PromoCodeUsage{config: _c.config}
+		_spec = sqlgraph.NewCreateSpec(promocodeusage.Table, sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64))
+	)
+	_spec.OnConflict = _c.conflict
+	if value, ok := _c.mutation.BonusAmount(); ok {
+		_spec.SetField(promocodeusage.FieldBonusAmount, field.TypeFloat64, value)
+		_node.BonusAmount = value
+	}
+	if value, ok := _c.mutation.UsedAt(); ok {
+		_spec.SetField(promocodeusage.FieldUsedAt, field.TypeTime, value)
+		_node.UsedAt = value
+	}
+	if nodes := _c.mutation.PromoCodeIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.PromoCodeTable,
+			Columns: []string{promocodeusage.PromoCodeColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocode.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_node.PromoCodeID = nodes[0]
+		_spec.Edges = append(_spec.Edges, edge)
+	}
+	if nodes := _c.mutation.UserIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.UserTable,
+			Columns: []string{promocodeusage.UserColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_node.UserID = nodes[0]
+		_spec.Edges = append(_spec.Edges, edge)
+	}
+	return _node, _spec
+}
+
+// OnConflict allows configuring the `ON CONFLICT` / `ON DUPLICATE KEY` clause
+// of the `INSERT` statement. For example:
+//
+//	client.PromoCodeUsage.Create().
+//		SetPromoCodeID(v).
+//		OnConflict(
+//			// Update the row with the new values
+//			// the was proposed for insertion.
+//			sql.ResolveWithNewValues(),
+//		).
+//		// Override some of the fields with custom
+//		// update values.
+//		Update(func(u *ent.PromoCodeUsageUpsert) {
+//			SetPromoCodeID(v+v).
+//		}).
+//		Exec(ctx)
+func (_c *PromoCodeUsageCreate) OnConflict(opts ...sql.ConflictOption) *PromoCodeUsageUpsertOne {
+	_c.conflict = opts
+	return &PromoCodeUsageUpsertOne{
+		create: _c,
+	}
+}
+
+// OnConflictColumns calls `OnConflict` and configures the columns
+// as conflict target. Using this option is equivalent to using:
+//
+//	client.PromoCodeUsage.Create().
+//		OnConflict(sql.ConflictColumns(columns...)).
+//		Exec(ctx)
+func (_c *PromoCodeUsageCreate) OnConflictColumns(columns ...string) *PromoCodeUsageUpsertOne {
+	_c.conflict = append(_c.conflict, sql.ConflictColumns(columns...))
+	return &PromoCodeUsageUpsertOne{
+		create: _c,
+	}
+}
+
+type (
+	// PromoCodeUsageUpsertOne is the builder for "upsert"-ing
+	//  one PromoCodeUsage node.
+	PromoCodeUsageUpsertOne struct {
+		create *PromoCodeUsageCreate
+	}
+
+	// PromoCodeUsageUpsert is the "OnConflict" setter.
+	PromoCodeUsageUpsert struct {
+		*sql.UpdateSet
+	}
+)
+
+// SetPromoCodeID sets the "promo_code_id" field.
+func (u *PromoCodeUsageUpsert) SetPromoCodeID(v int64) *PromoCodeUsageUpsert {
+	u.Set(promocodeusage.FieldPromoCodeID, v)
+	return u
+}
+
+// UpdatePromoCodeID sets the "promo_code_id" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsert) UpdatePromoCodeID() *PromoCodeUsageUpsert {
+	u.SetExcluded(promocodeusage.FieldPromoCodeID)
+	return u
+}
+
+// SetUserID sets the "user_id" field.
+func (u *PromoCodeUsageUpsert) SetUserID(v int64) *PromoCodeUsageUpsert {
+	u.Set(promocodeusage.FieldUserID, v)
+	return u
+}
+
+// UpdateUserID sets the "user_id" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsert) UpdateUserID() *PromoCodeUsageUpsert {
+	u.SetExcluded(promocodeusage.FieldUserID)
+	return u
+}
+
+// SetBonusAmount sets the "bonus_amount" field.
+func (u *PromoCodeUsageUpsert) SetBonusAmount(v float64) *PromoCodeUsageUpsert {
+	u.Set(promocodeusage.FieldBonusAmount, v)
+	return u
+}
+
+// UpdateBonusAmount sets the "bonus_amount" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsert) UpdateBonusAmount() *PromoCodeUsageUpsert {
+	u.SetExcluded(promocodeusage.FieldBonusAmount)
+	return u
+}
+
+// AddBonusAmount adds v to the "bonus_amount" field.
+func (u *PromoCodeUsageUpsert) AddBonusAmount(v float64) *PromoCodeUsageUpsert {
+	u.Add(promocodeusage.FieldBonusAmount, v)
+	return u
+}
+
+// SetUsedAt sets the "used_at" field.
+func (u *PromoCodeUsageUpsert) SetUsedAt(v time.Time) *PromoCodeUsageUpsert {
+	u.Set(promocodeusage.FieldUsedAt, v)
+	return u
+}
+
+// UpdateUsedAt sets the "used_at" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsert) UpdateUsedAt() *PromoCodeUsageUpsert {
+	u.SetExcluded(promocodeusage.FieldUsedAt)
+	return u
+}
+
+// UpdateNewValues updates the mutable fields using the new values that were set on create.
+// Using this option is equivalent to using:
+//
+//	client.PromoCodeUsage.Create().
+//		OnConflict(
+//			sql.ResolveWithNewValues(),
+//		).
+//		Exec(ctx)
+func (u *PromoCodeUsageUpsertOne) UpdateNewValues() *PromoCodeUsageUpsertOne {
+	u.create.conflict = append(u.create.conflict, sql.ResolveWithNewValues())
+	return u
+}
+
+// Ignore sets each column to itself in case of conflict.
+// Using this option is equivalent to using:
+//
+//	client.PromoCodeUsage.Create().
+//	    OnConflict(sql.ResolveWithIgnore()).
+//	    Exec(ctx)
+func (u *PromoCodeUsageUpsertOne) Ignore() *PromoCodeUsageUpsertOne {
+	u.create.conflict = append(u.create.conflict, sql.ResolveWithIgnore())
+	return u
+}
+
+// DoNothing configures the conflict_action to `DO NOTHING`.
+// Supported only by SQLite and PostgreSQL.
+func (u *PromoCodeUsageUpsertOne) DoNothing() *PromoCodeUsageUpsertOne {
+	u.create.conflict = append(u.create.conflict, sql.DoNothing())
+	return u
+}
+
+// Update allows overriding fields `UPDATE` values. See the PromoCodeUsageCreate.OnConflict
+// documentation for more info.
+func (u *PromoCodeUsageUpsertOne) Update(set func(*PromoCodeUsageUpsert)) *PromoCodeUsageUpsertOne {
+	u.create.conflict = append(u.create.conflict, sql.ResolveWith(func(update *sql.UpdateSet) {
+		set(&PromoCodeUsageUpsert{UpdateSet: update})
+	}))
+	return u
+}
+
+// SetPromoCodeID sets the "promo_code_id" field.
+func (u *PromoCodeUsageUpsertOne) SetPromoCodeID(v int64) *PromoCodeUsageUpsertOne {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.SetPromoCodeID(v)
+	})
+}
+
+// UpdatePromoCodeID sets the "promo_code_id" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsertOne) UpdatePromoCodeID() *PromoCodeUsageUpsertOne {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.UpdatePromoCodeID()
+	})
+}
+
+// SetUserID sets the "user_id" field.
+func (u *PromoCodeUsageUpsertOne) SetUserID(v int64) *PromoCodeUsageUpsertOne {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.SetUserID(v)
+	})
+}
+
+// UpdateUserID sets the "user_id" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsertOne) UpdateUserID() *PromoCodeUsageUpsertOne {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.UpdateUserID()
+	})
+}
+
+// SetBonusAmount sets the "bonus_amount" field.
+func (u *PromoCodeUsageUpsertOne) SetBonusAmount(v float64) *PromoCodeUsageUpsertOne {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.SetBonusAmount(v)
+	})
+}
+
+// AddBonusAmount adds v to the "bonus_amount" field.
+func (u *PromoCodeUsageUpsertOne) AddBonusAmount(v float64) *PromoCodeUsageUpsertOne {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.AddBonusAmount(v)
+	})
+}
+
+// UpdateBonusAmount sets the "bonus_amount" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsertOne) UpdateBonusAmount() *PromoCodeUsageUpsertOne {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.UpdateBonusAmount()
+	})
+}
+
+// SetUsedAt sets the "used_at" field.
+func (u *PromoCodeUsageUpsertOne) SetUsedAt(v time.Time) *PromoCodeUsageUpsertOne {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.SetUsedAt(v)
+	})
+}
+
+// UpdateUsedAt sets the "used_at" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsertOne) UpdateUsedAt() *PromoCodeUsageUpsertOne {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.UpdateUsedAt()
+	})
+}
+
+// Exec executes the query.
+func (u *PromoCodeUsageUpsertOne) Exec(ctx context.Context) error {
+	if len(u.create.conflict) == 0 {
+		return errors.New("ent: missing options for PromoCodeUsageCreate.OnConflict")
+	}
+	return u.create.Exec(ctx)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (u *PromoCodeUsageUpsertOne) ExecX(ctx context.Context) {
+	if err := u.create.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// Exec executes the UPSERT query and returns the inserted/updated ID.
+func (u *PromoCodeUsageUpsertOne) ID(ctx context.Context) (id int64, err error) {
+	node, err := u.create.Save(ctx)
+	if err != nil {
+		return id, err
+	}
+	return node.ID, nil
+}
+
+// IDX is like ID, but panics if an error occurs.
+func (u *PromoCodeUsageUpsertOne) IDX(ctx context.Context) int64 {
+	id, err := u.ID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// PromoCodeUsageCreateBulk is the builder for creating many PromoCodeUsage entities in bulk.
+type PromoCodeUsageCreateBulk struct {
+	config
+	err      error
+	builders []*PromoCodeUsageCreate
+	conflict []sql.ConflictOption
+}
+
+// Save creates the PromoCodeUsage entities in the database.
+func (_c *PromoCodeUsageCreateBulk) Save(ctx context.Context) ([]*PromoCodeUsage, error) {
+	if _c.err != nil {
+		return nil, _c.err
+	}
+	specs := make([]*sqlgraph.CreateSpec, len(_c.builders))
+	nodes := make([]*PromoCodeUsage, len(_c.builders))
+	mutators := make([]Mutator, len(_c.builders))
+	for i := range _c.builders {
+		func(i int, root context.Context) {
+			builder := _c.builders[i]
+			builder.defaults()
+			var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
+				mutation, ok := m.(*PromoCodeUsageMutation)
+				if !ok {
+					return nil, fmt.Errorf("unexpected mutation type %T", m)
+				}
+				if err := builder.check(); err != nil {
+					return nil, err
+				}
+				builder.mutation = mutation
+				var err error
+				nodes[i], specs[i] = builder.createSpec()
+				if i < len(mutators)-1 {
+					_, err = mutators[i+1].Mutate(root, _c.builders[i+1].mutation)
+				} else {
+					spec := &sqlgraph.BatchCreateSpec{Nodes: specs}
+					spec.OnConflict = _c.conflict
+					// Invoke the actual operation on the latest mutation in the chain.
+					if err = sqlgraph.BatchCreate(ctx, _c.driver, spec); err != nil {
+						if sqlgraph.IsConstraintError(err) {
+							err = &ConstraintError{msg: err.Error(), wrap: err}
+						}
+					}
+				}
+				if err != nil {
+					return nil, err
+				}
+				mutation.id = &nodes[i].ID
+				if specs[i].ID.Value != nil {
+					id := specs[i].ID.Value.(int64)
+					nodes[i].ID = int64(id)
+				}
+				mutation.done = true
+				return nodes[i], nil
+			})
+			for i := len(builder.hooks) - 1; i >= 0; i-- {
+				mut = builder.hooks[i](mut)
+			}
+			mutators[i] = mut
+		}(i, ctx)
+	}
+	if len(mutators) > 0 {
+		if _, err := mutators[0].Mutate(ctx, _c.builders[0].mutation); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_c *PromoCodeUsageCreateBulk) SaveX(ctx context.Context) []*PromoCodeUsage {
+	v, err := _c.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Exec executes the query.
+func (_c *PromoCodeUsageCreateBulk) Exec(ctx context.Context) error {
+	_, err := _c.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_c *PromoCodeUsageCreateBulk) ExecX(ctx context.Context) {
+	if err := _c.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// OnConflict allows configuring the `ON CONFLICT` / `ON DUPLICATE KEY` clause
+// of the `INSERT` statement. For example:
+//
+//	client.PromoCodeUsage.CreateBulk(builders...).
+//		OnConflict(
+//			// Update the row with the new values
+//			// the was proposed for insertion.
+//			sql.ResolveWithNewValues(),
+//		).
+//		// Override some of the fields with custom
+//		// update values.
+//		Update(func(u *ent.PromoCodeUsageUpsert) {
+//			SetPromoCodeID(v+v).
+//		}).
+//		Exec(ctx)
+func (_c *PromoCodeUsageCreateBulk) OnConflict(opts ...sql.ConflictOption) *PromoCodeUsageUpsertBulk {
+	_c.conflict = opts
+	return &PromoCodeUsageUpsertBulk{
+		create: _c,
+	}
+}
+
+// OnConflictColumns calls `OnConflict` and configures the columns
+// as conflict target. Using this option is equivalent to using:
+//
+//	client.PromoCodeUsage.Create().
+//		OnConflict(sql.ConflictColumns(columns...)).
+//		Exec(ctx)
+func (_c *PromoCodeUsageCreateBulk) OnConflictColumns(columns ...string) *PromoCodeUsageUpsertBulk {
+	_c.conflict = append(_c.conflict, sql.ConflictColumns(columns...))
+	return &PromoCodeUsageUpsertBulk{
+		create: _c,
+	}
+}
+
+// PromoCodeUsageUpsertBulk is the builder for "upsert"-ing
+// a bulk of PromoCodeUsage nodes.
+type PromoCodeUsageUpsertBulk struct {
+	create *PromoCodeUsageCreateBulk
+}
+
+// UpdateNewValues updates the mutable fields using the new values that
+// were set on create. Using this option is equivalent to using:
+//
+//	client.PromoCodeUsage.Create().
+//		OnConflict(
+//			sql.ResolveWithNewValues(),
+//		).
+//		Exec(ctx)
+func (u *PromoCodeUsageUpsertBulk) UpdateNewValues() *PromoCodeUsageUpsertBulk {
+	u.create.conflict = append(u.create.conflict, sql.ResolveWithNewValues())
+	return u
+}
+
+// Ignore sets each column to itself in case of conflict.
+// Using this option is equivalent to using:
+//
+//	client.PromoCodeUsage.Create().
+//		OnConflict(sql.ResolveWithIgnore()).
+//		Exec(ctx)
+func (u *PromoCodeUsageUpsertBulk) Ignore() *PromoCodeUsageUpsertBulk {
+	u.create.conflict = append(u.create.conflict, sql.ResolveWithIgnore())
+	return u
+}
+
+// DoNothing configures the conflict_action to `DO NOTHING`.
+// Supported only by SQLite and PostgreSQL.
+func (u *PromoCodeUsageUpsertBulk) DoNothing() *PromoCodeUsageUpsertBulk {
+	u.create.conflict = append(u.create.conflict, sql.DoNothing())
+	return u
+}
+
+// Update allows overriding fields `UPDATE` values. See the PromoCodeUsageCreateBulk.OnConflict
+// documentation for more info.
+func (u *PromoCodeUsageUpsertBulk) Update(set func(*PromoCodeUsageUpsert)) *PromoCodeUsageUpsertBulk {
+	u.create.conflict = append(u.create.conflict, sql.ResolveWith(func(update *sql.UpdateSet) {
+		set(&PromoCodeUsageUpsert{UpdateSet: update})
+	}))
+	return u
+}
+
+// SetPromoCodeID sets the "promo_code_id" field.
+func (u *PromoCodeUsageUpsertBulk) SetPromoCodeID(v int64) *PromoCodeUsageUpsertBulk {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.SetPromoCodeID(v)
+	})
+}
+
+// UpdatePromoCodeID sets the "promo_code_id" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsertBulk) UpdatePromoCodeID() *PromoCodeUsageUpsertBulk {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.UpdatePromoCodeID()
+	})
+}
+
+// SetUserID sets the "user_id" field.
+func (u *PromoCodeUsageUpsertBulk) SetUserID(v int64) *PromoCodeUsageUpsertBulk {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.SetUserID(v)
+	})
+}
+
+// UpdateUserID sets the "user_id" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsertBulk) UpdateUserID() *PromoCodeUsageUpsertBulk {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.UpdateUserID()
+	})
+}
+
+// SetBonusAmount sets the "bonus_amount" field.
+func (u *PromoCodeUsageUpsertBulk) SetBonusAmount(v float64) *PromoCodeUsageUpsertBulk {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.SetBonusAmount(v)
+	})
+}
+
+// AddBonusAmount adds v to the "bonus_amount" field.
+func (u *PromoCodeUsageUpsertBulk) AddBonusAmount(v float64) *PromoCodeUsageUpsertBulk {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.AddBonusAmount(v)
+	})
+}
+
+// UpdateBonusAmount sets the "bonus_amount" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsertBulk) UpdateBonusAmount() *PromoCodeUsageUpsertBulk {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.UpdateBonusAmount()
+	})
+}
+
+// SetUsedAt sets the "used_at" field.
+func (u *PromoCodeUsageUpsertBulk) SetUsedAt(v time.Time) *PromoCodeUsageUpsertBulk {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.SetUsedAt(v)
+	})
+}
+
+// UpdateUsedAt sets the "used_at" field to the value that was provided on create.
+func (u *PromoCodeUsageUpsertBulk) UpdateUsedAt() *PromoCodeUsageUpsertBulk {
+	return u.Update(func(s *PromoCodeUsageUpsert) {
+		s.UpdateUsedAt()
+	})
+}
+
+// Exec executes the query.
+func (u *PromoCodeUsageUpsertBulk) Exec(ctx context.Context) error {
+	if u.create.err != nil {
+		return u.create.err
+	}
+	for i, b := range u.create.builders {
+		if len(b.conflict) != 0 {
+			return fmt.Errorf("ent: OnConflict was set for builder %d. Set it on the PromoCodeUsageCreateBulk instead", i)
+		}
+	}
+	if len(u.create.conflict) == 0 {
+		return errors.New("ent: missing options for PromoCodeUsageCreateBulk.OnConflict")
+	}
+	return u.create.Exec(ctx)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (u *PromoCodeUsageUpsertBulk) ExecX(ctx context.Context) {
+	if err := u.create.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

backend/ent/promocodeusage_delete.go

@@ -0,0 +1,88 @@
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
+)
+
+// PromoCodeUsageDelete is the builder for deleting a PromoCodeUsage entity.
+type PromoCodeUsageDelete struct {
+	config
+	hooks    []Hook
+	mutation *PromoCodeUsageMutation
+}
+
+// Where appends a list predicates to the PromoCodeUsageDelete builder.
+func (_d *PromoCodeUsageDelete) Where(ps ...predicate.PromoCodeUsage) *PromoCodeUsageDelete {
+	_d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query and returns how many vertices were deleted.
+func (_d *PromoCodeUsageDelete) Exec(ctx context.Context) (int, error) {
+	return withHooks(ctx, _d.sqlExec, _d.mutation, _d.hooks)
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *PromoCodeUsageDelete) ExecX(ctx context.Context) int {
+	n, err := _d.Exec(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return n
+}
+
+func (_d *PromoCodeUsageDelete) sqlExec(ctx context.Context) (int, error) {
+	_spec := sqlgraph.NewDeleteSpec(promocodeusage.Table, sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64))
+	if ps := _d.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	affected, err := sqlgraph.DeleteNodes(ctx, _d.driver, _spec)
+	if err != nil && sqlgraph.IsConstraintError(err) {
+		err = &ConstraintError{msg: err.Error(), wrap: err}
+	}
+	_d.mutation.done = true
+	return affected, err
+}
+
+// PromoCodeUsageDeleteOne is the builder for deleting a single PromoCodeUsage entity.
+type PromoCodeUsageDeleteOne struct {
+	_d *PromoCodeUsageDelete
+}
+
+// Where appends a list predicates to the PromoCodeUsageDelete builder.
+func (_d *PromoCodeUsageDeleteOne) Where(ps ...predicate.PromoCodeUsage) *PromoCodeUsageDeleteOne {
+	_d._d.mutation.Where(ps...)
+	return _d
+}
+
+// Exec executes the deletion query.
+func (_d *PromoCodeUsageDeleteOne) Exec(ctx context.Context) error {
+	n, err := _d._d.Exec(ctx)
+	switch {
+	case err != nil:
+		return err
+	case n == 0:
+		return &NotFoundError{promocodeusage.Label}
+	default:
+		return nil
+	}
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_d *PromoCodeUsageDeleteOne) ExecX(ctx context.Context) {
+	if err := _d.Exec(ctx); err != nil {
+		panic(err)
+	}
+}

backend/ent/promocodeusage_query.go

@@ -0,0 +1,718 @@
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"fmt"
+	"math"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
+	"github.com/Wei-Shaw/sub2api/ent/user"
+)
+
+// PromoCodeUsageQuery is the builder for querying PromoCodeUsage entities.
+type PromoCodeUsageQuery struct {
+	config
+	ctx           *QueryContext
+	order         []promocodeusage.OrderOption
+	inters        []Interceptor
+	predicates    []predicate.PromoCodeUsage
+	withPromoCode *PromoCodeQuery
+	withUser      *UserQuery
+	modifiers     []func(*sql.Selector)
+	// intermediate query (i.e. traversal path).
+	sql  *sql.Selector
+	path func(context.Context) (*sql.Selector, error)
+}
+
+// Where adds a new predicate for the PromoCodeUsageQuery builder.
+func (_q *PromoCodeUsageQuery) Where(ps ...predicate.PromoCodeUsage) *PromoCodeUsageQuery {
+	_q.predicates = append(_q.predicates, ps...)
+	return _q
+}
+
+// Limit the number of records to be returned by this query.
+func (_q *PromoCodeUsageQuery) Limit(limit int) *PromoCodeUsageQuery {
+	_q.ctx.Limit = &limit
+	return _q
+}
+
+// Offset to start from.
+func (_q *PromoCodeUsageQuery) Offset(offset int) *PromoCodeUsageQuery {
+	_q.ctx.Offset = &offset
+	return _q
+}
+
+// Unique configures the query builder to filter duplicate records on query.
+// By default, unique is set to true, and can be disabled using this method.
+func (_q *PromoCodeUsageQuery) Unique(unique bool) *PromoCodeUsageQuery {
+	_q.ctx.Unique = &unique
+	return _q
+}
+
+// Order specifies how the records should be ordered.
+func (_q *PromoCodeUsageQuery) Order(o ...promocodeusage.OrderOption) *PromoCodeUsageQuery {
+	_q.order = append(_q.order, o...)
+	return _q
+}
+
+// QueryPromoCode chains the current query on the "promo_code" edge.
+func (_q *PromoCodeUsageQuery) QueryPromoCode() *PromoCodeQuery {
+	query := (&PromoCodeClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(promocodeusage.Table, promocodeusage.FieldID, selector),
+			sqlgraph.To(promocode.Table, promocode.FieldID),
+			sqlgraph.Edge(sqlgraph.M2O, true, promocodeusage.PromoCodeTable, promocodeusage.PromoCodeColumn),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
+// QueryUser chains the current query on the "user" edge.
+func (_q *PromoCodeUsageQuery) QueryUser() *UserQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(promocodeusage.Table, promocodeusage.FieldID, selector),
+			sqlgraph.To(user.Table, user.FieldID),
+			sqlgraph.Edge(sqlgraph.M2O, true, promocodeusage.UserTable, promocodeusage.UserColumn),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
+// First returns the first PromoCodeUsage entity from the query.
+// Returns a *NotFoundError when no PromoCodeUsage was found.
+func (_q *PromoCodeUsageQuery) First(ctx context.Context) (*PromoCodeUsage, error) {
+	nodes, err := _q.Limit(1).All(setContextOp(ctx, _q.ctx, ent.OpQueryFirst))
+	if err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nil, &NotFoundError{promocodeusage.Label}
+	}
+	return nodes[0], nil
+}
+
+// FirstX is like First, but panics if an error occurs.
+func (_q *PromoCodeUsageQuery) FirstX(ctx context.Context) *PromoCodeUsage {
+	node, err := _q.First(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return node
+}
+
+// FirstID returns the first PromoCodeUsage ID from the query.
+// Returns a *NotFoundError when no PromoCodeUsage ID was found.
+func (_q *PromoCodeUsageQuery) FirstID(ctx context.Context) (id int64, err error) {
+	var ids []int64
+	if ids, err = _q.Limit(1).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryFirstID)); err != nil {
+		return
+	}
+	if len(ids) == 0 {
+		err = &NotFoundError{promocodeusage.Label}
+		return
+	}
+	return ids[0], nil
+}
+
+// FirstIDX is like FirstID, but panics if an error occurs.
+func (_q *PromoCodeUsageQuery) FirstIDX(ctx context.Context) int64 {
+	id, err := _q.FirstID(ctx)
+	if err != nil && !IsNotFound(err) {
+		panic(err)
+	}
+	return id
+}
+
+// Only returns a single PromoCodeUsage entity found by the query, ensuring it only returns one.
+// Returns a *NotSingularError when more than one PromoCodeUsage entity is found.
+// Returns a *NotFoundError when no PromoCodeUsage entities are found.
+func (_q *PromoCodeUsageQuery) Only(ctx context.Context) (*PromoCodeUsage, error) {
+	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
+	if err != nil {
+		return nil, err
+	}
+	switch len(nodes) {
+	case 1:
+		return nodes[0], nil
+	case 0:
+		return nil, &NotFoundError{promocodeusage.Label}
+	default:
+		return nil, &NotSingularError{promocodeusage.Label}
+	}
+}
+
+// OnlyX is like Only, but panics if an error occurs.
+func (_q *PromoCodeUsageQuery) OnlyX(ctx context.Context) *PromoCodeUsage {
+	node, err := _q.Only(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// OnlyID is like Only, but returns the only PromoCodeUsage ID in the query.
+// Returns a *NotSingularError when more than one PromoCodeUsage ID is found.
+// Returns a *NotFoundError when no entities are found.
+func (_q *PromoCodeUsageQuery) OnlyID(ctx context.Context) (id int64, err error) {
+	var ids []int64
+	if ids, err = _q.Limit(2).IDs(setContextOp(ctx, _q.ctx, ent.OpQueryOnlyID)); err != nil {
+		return
+	}
+	switch len(ids) {
+	case 1:
+		id = ids[0]
+	case 0:
+		err = &NotFoundError{promocodeusage.Label}
+	default:
+		err = &NotSingularError{promocodeusage.Label}
+	}
+	return
+}
+
+// OnlyIDX is like OnlyID, but panics if an error occurs.
+func (_q *PromoCodeUsageQuery) OnlyIDX(ctx context.Context) int64 {
+	id, err := _q.OnlyID(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return id
+}
+
+// All executes the query and returns a list of PromoCodeUsages.
+func (_q *PromoCodeUsageQuery) All(ctx context.Context) ([]*PromoCodeUsage, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryAll)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return nil, err
+	}
+	qr := querierAll[[]*PromoCodeUsage, *PromoCodeUsageQuery]()
+	return withInterceptors[[]*PromoCodeUsage](ctx, _q, qr, _q.inters)
+}
+
+// AllX is like All, but panics if an error occurs.
+func (_q *PromoCodeUsageQuery) AllX(ctx context.Context) []*PromoCodeUsage {
+	nodes, err := _q.All(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return nodes
+}
+
+// IDs executes the query and returns a list of PromoCodeUsage IDs.
+func (_q *PromoCodeUsageQuery) IDs(ctx context.Context) (ids []int64, err error) {
+	if _q.ctx.Unique == nil && _q.path != nil {
+		_q.Unique(true)
+	}
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryIDs)
+	if err = _q.Select(promocodeusage.FieldID).Scan(ctx, &ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// IDsX is like IDs, but panics if an error occurs.
+func (_q *PromoCodeUsageQuery) IDsX(ctx context.Context) []int64 {
+	ids, err := _q.IDs(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return ids
+}
+
+// Count returns the count of the given query.
+func (_q *PromoCodeUsageQuery) Count(ctx context.Context) (int, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryCount)
+	if err := _q.prepareQuery(ctx); err != nil {
+		return 0, err
+	}
+	return withInterceptors[int](ctx, _q, querierCount[*PromoCodeUsageQuery](), _q.inters)
+}
+
+// CountX is like Count, but panics if an error occurs.
+func (_q *PromoCodeUsageQuery) CountX(ctx context.Context) int {
+	count, err := _q.Count(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return count
+}
+
+// Exist returns true if the query has elements in the graph.
+func (_q *PromoCodeUsageQuery) Exist(ctx context.Context) (bool, error) {
+	ctx = setContextOp(ctx, _q.ctx, ent.OpQueryExist)
+	switch _, err := _q.FirstID(ctx); {
+	case IsNotFound(err):
+		return false, nil
+	case err != nil:
+		return false, fmt.Errorf("ent: check existence: %w", err)
+	default:
+		return true, nil
+	}
+}
+
+// ExistX is like Exist, but panics if an error occurs.
+func (_q *PromoCodeUsageQuery) ExistX(ctx context.Context) bool {
+	exist, err := _q.Exist(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return exist
+}
+
+// Clone returns a duplicate of the PromoCodeUsageQuery builder, including all associated steps. It can be
+// used to prepare common query builders and use them differently after the clone is made.
+func (_q *PromoCodeUsageQuery) Clone() *PromoCodeUsageQuery {
+	if _q == nil {
+		return nil
+	}
+	return &PromoCodeUsageQuery{
+		config:        _q.config,
+		ctx:           _q.ctx.Clone(),
+		order:         append([]promocodeusage.OrderOption{}, _q.order...),
+		inters:        append([]Interceptor{}, _q.inters...),
+		predicates:    append([]predicate.PromoCodeUsage{}, _q.predicates...),
+		withPromoCode: _q.withPromoCode.Clone(),
+		withUser:      _q.withUser.Clone(),
+		// clone intermediate query.
+		sql:  _q.sql.Clone(),
+		path: _q.path,
+	}
+}
+
+// WithPromoCode tells the query-builder to eager-load the nodes that are connected to
+// the "promo_code" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *PromoCodeUsageQuery) WithPromoCode(opts ...func(*PromoCodeQuery)) *PromoCodeUsageQuery {
+	query := (&PromoCodeClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withPromoCode = query
+	return _q
+}
+
+// WithUser tells the query-builder to eager-load the nodes that are connected to
+// the "user" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *PromoCodeUsageQuery) WithUser(opts ...func(*UserQuery)) *PromoCodeUsageQuery {
+	query := (&UserClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withUser = query
+	return _q
+}
+
+// GroupBy is used to group vertices by one or more fields/columns.
+// It is often used with aggregate functions, like: count, max, mean, min, sum.
+//
+// Example:
+//
+//	var v []struct {
+//		PromoCodeID int64 `json:"promo_code_id,omitempty"`
+//		Count int `json:"count,omitempty"`
+//	}
+//
+//	client.PromoCodeUsage.Query().
+//		GroupBy(promocodeusage.FieldPromoCodeID).
+//		Aggregate(ent.Count()).
+//		Scan(ctx, &v)
+func (_q *PromoCodeUsageQuery) GroupBy(field string, fields ...string) *PromoCodeUsageGroupBy {
+	_q.ctx.Fields = append([]string{field}, fields...)
+	grbuild := &PromoCodeUsageGroupBy{build: _q}
+	grbuild.flds = &_q.ctx.Fields
+	grbuild.label = promocodeusage.Label
+	grbuild.scan = grbuild.Scan
+	return grbuild
+}
+
+// Select allows the selection one or more fields/columns for the given query,
+// instead of selecting all fields in the entity.
+//
+// Example:
+//
+//	var v []struct {
+//		PromoCodeID int64 `json:"promo_code_id,omitempty"`
+//	}
+//
+//	client.PromoCodeUsage.Query().
+//		Select(promocodeusage.FieldPromoCodeID).
+//		Scan(ctx, &v)
+func (_q *PromoCodeUsageQuery) Select(fields ...string) *PromoCodeUsageSelect {
+	_q.ctx.Fields = append(_q.ctx.Fields, fields...)
+	sbuild := &PromoCodeUsageSelect{PromoCodeUsageQuery: _q}
+	sbuild.label = promocodeusage.Label
+	sbuild.flds, sbuild.scan = &_q.ctx.Fields, sbuild.Scan
+	return sbuild
+}
+
+// Aggregate returns a PromoCodeUsageSelect configured with the given aggregations.
+func (_q *PromoCodeUsageQuery) Aggregate(fns ...AggregateFunc) *PromoCodeUsageSelect {
+	return _q.Select().Aggregate(fns...)
+}
+
+func (_q *PromoCodeUsageQuery) prepareQuery(ctx context.Context) error {
+	for _, inter := range _q.inters {
+		if inter == nil {
+			return fmt.Errorf("ent: uninitialized interceptor (forgotten import ent/runtime?)")
+		}
+		if trv, ok := inter.(Traverser); ok {
+			if err := trv.Traverse(ctx, _q); err != nil {
+				return err
+			}
+		}
+	}
+	for _, f := range _q.ctx.Fields {
+		if !promocodeusage.ValidColumn(f) {
+			return &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
+		}
+	}
+	if _q.path != nil {
+		prev, err := _q.path(ctx)
+		if err != nil {
+			return err
+		}
+		_q.sql = prev
+	}
+	return nil
+}
+
+func (_q *PromoCodeUsageQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*PromoCodeUsage, error) {
+	var (
+		nodes       = []*PromoCodeUsage{}
+		_spec       = _q.querySpec()
+		loadedTypes = [2]bool{
+			_q.withPromoCode != nil,
+			_q.withUser != nil,
+		}
+	)
+	_spec.ScanValues = func(columns []string) ([]any, error) {
+		return (*PromoCodeUsage).scanValues(nil, columns)
+	}
+	_spec.Assign = func(columns []string, values []any) error {
+		node := &PromoCodeUsage{config: _q.config}
+		nodes = append(nodes, node)
+		node.Edges.loadedTypes = loadedTypes
+		return node.assignValues(columns, values)
+	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
+	for i := range hooks {
+		hooks[i](ctx, _spec)
+	}
+	if err := sqlgraph.QueryNodes(ctx, _q.driver, _spec); err != nil {
+		return nil, err
+	}
+	if len(nodes) == 0 {
+		return nodes, nil
+	}
+	if query := _q.withPromoCode; query != nil {
+		if err := _q.loadPromoCode(ctx, query, nodes, nil,
+			func(n *PromoCodeUsage, e *PromoCode) { n.Edges.PromoCode = e }); err != nil {
+			return nil, err
+		}
+	}
+	if query := _q.withUser; query != nil {
+		if err := _q.loadUser(ctx, query, nodes, nil,
+			func(n *PromoCodeUsage, e *User) { n.Edges.User = e }); err != nil {
+			return nil, err
+		}
+	}
+	return nodes, nil
+}
+
+func (_q *PromoCodeUsageQuery) loadPromoCode(ctx context.Context, query *PromoCodeQuery, nodes []*PromoCodeUsage, init func(*PromoCodeUsage), assign func(*PromoCodeUsage, *PromoCode)) error {
+	ids := make([]int64, 0, len(nodes))
+	nodeids := make(map[int64][]*PromoCodeUsage)
+	for i := range nodes {
+		fk := nodes[i].PromoCodeID
+		if _, ok := nodeids[fk]; !ok {
+			ids = append(ids, fk)
+		}
+		nodeids[fk] = append(nodeids[fk], nodes[i])
+	}
+	if len(ids) == 0 {
+		return nil
+	}
+	query.Where(promocode.IDIn(ids...))
+	neighbors, err := query.All(ctx)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		nodes, ok := nodeids[n.ID]
+		if !ok {
+			return fmt.Errorf(`unexpected foreign-key "promo_code_id" returned %v`, n.ID)
+		}
+		for i := range nodes {
+			assign(nodes[i], n)
+		}
+	}
+	return nil
+}
+func (_q *PromoCodeUsageQuery) loadUser(ctx context.Context, query *UserQuery, nodes []*PromoCodeUsage, init func(*PromoCodeUsage), assign func(*PromoCodeUsage, *User)) error {
+	ids := make([]int64, 0, len(nodes))
+	nodeids := make(map[int64][]*PromoCodeUsage)
+	for i := range nodes {
+		fk := nodes[i].UserID
+		if _, ok := nodeids[fk]; !ok {
+			ids = append(ids, fk)
+		}
+		nodeids[fk] = append(nodeids[fk], nodes[i])
+	}
+	if len(ids) == 0 {
+		return nil
+	}
+	query.Where(user.IDIn(ids...))
+	neighbors, err := query.All(ctx)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		nodes, ok := nodeids[n.ID]
+		if !ok {
+			return fmt.Errorf(`unexpected foreign-key "user_id" returned %v`, n.ID)
+		}
+		for i := range nodes {
+			assign(nodes[i], n)
+		}
+	}
+	return nil
+}
+
+func (_q *PromoCodeUsageQuery) sqlCount(ctx context.Context) (int, error) {
+	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
+	_spec.Node.Columns = _q.ctx.Fields
+	if len(_q.ctx.Fields) > 0 {
+		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
+	}
+	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
+}
+
+func (_q *PromoCodeUsageQuery) querySpec() *sqlgraph.QuerySpec {
+	_spec := sqlgraph.NewQuerySpec(promocodeusage.Table, promocodeusage.Columns, sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64))
+	_spec.From = _q.sql
+	if unique := _q.ctx.Unique; unique != nil {
+		_spec.Unique = *unique
+	} else if _q.path != nil {
+		_spec.Unique = true
+	}
+	if fields := _q.ctx.Fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, promocodeusage.FieldID)
+		for i := range fields {
+			if fields[i] != promocodeusage.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
+			}
+		}
+		if _q.withPromoCode != nil {
+			_spec.Node.AddColumnOnce(promocodeusage.FieldPromoCodeID)
+		}
+		if _q.withUser != nil {
+			_spec.Node.AddColumnOnce(promocodeusage.FieldUserID)
+		}
+	}
+	if ps := _q.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		_spec.Limit = *limit
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		_spec.Offset = *offset
+	}
+	if ps := _q.order; len(ps) > 0 {
+		_spec.Order = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	return _spec
+}
+
+func (_q *PromoCodeUsageQuery) sqlQuery(ctx context.Context) *sql.Selector {
+	builder := sql.Dialect(_q.driver.Dialect())
+	t1 := builder.Table(promocodeusage.Table)
+	columns := _q.ctx.Fields
+	if len(columns) == 0 {
+		columns = promocodeusage.Columns
+	}
+	selector := builder.Select(t1.Columns(columns...)...).From(t1)
+	if _q.sql != nil {
+		selector = _q.sql
+		selector.Select(selector.Columns(columns...)...)
+	}
+	if _q.ctx.Unique != nil && *_q.ctx.Unique {
+		selector.Distinct()
+	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
+	for _, p := range _q.predicates {
+		p(selector)
+	}
+	for _, p := range _q.order {
+		p(selector)
+	}
+	if offset := _q.ctx.Offset; offset != nil {
+		// limit is mandatory for offset clause. We start
+		// with default value, and override it below if needed.
+		selector.Offset(*offset).Limit(math.MaxInt32)
+	}
+	if limit := _q.ctx.Limit; limit != nil {
+		selector.Limit(*limit)
+	}
+	return selector
+}
+
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *PromoCodeUsageQuery) ForUpdate(opts ...sql.LockOption) *PromoCodeUsageQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *PromoCodeUsageQuery) ForShare(opts ...sql.LockOption) *PromoCodeUsageQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
+// PromoCodeUsageGroupBy is the group-by builder for PromoCodeUsage entities.
+type PromoCodeUsageGroupBy struct {
+	selector
+	build *PromoCodeUsageQuery
+}
+
+// Aggregate adds the given aggregation functions to the group-by query.
+func (_g *PromoCodeUsageGroupBy) Aggregate(fns ...AggregateFunc) *PromoCodeUsageGroupBy {
+	_g.fns = append(_g.fns, fns...)
+	return _g
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_g *PromoCodeUsageGroupBy) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _g.build.ctx, ent.OpQueryGroupBy)
+	if err := _g.build.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*PromoCodeUsageQuery, *PromoCodeUsageGroupBy](ctx, _g.build, _g, _g.build.inters, v)
+}
+
+func (_g *PromoCodeUsageGroupBy) sqlScan(ctx context.Context, root *PromoCodeUsageQuery, v any) error {
+	selector := root.sqlQuery(ctx).Select()
+	aggregation := make([]string, 0, len(_g.fns))
+	for _, fn := range _g.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	if len(selector.SelectedColumns()) == 0 {
+		columns := make([]string, 0, len(*_g.flds)+len(_g.fns))
+		for _, f := range *_g.flds {
+			columns = append(columns, selector.C(f))
+		}
+		columns = append(columns, aggregation...)
+		selector.Select(columns...)
+	}
+	selector.GroupBy(selector.Columns(*_g.flds...)...)
+	if err := selector.Err(); err != nil {
+		return err
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _g.build.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}
+
+// PromoCodeUsageSelect is the builder for selecting fields of PromoCodeUsage entities.
+type PromoCodeUsageSelect struct {
+	*PromoCodeUsageQuery
+	selector
+}
+
+// Aggregate adds the given aggregation functions to the selector query.
+func (_s *PromoCodeUsageSelect) Aggregate(fns ...AggregateFunc) *PromoCodeUsageSelect {
+	_s.fns = append(_s.fns, fns...)
+	return _s
+}
+
+// Scan applies the selector query and scans the result into the given value.
+func (_s *PromoCodeUsageSelect) Scan(ctx context.Context, v any) error {
+	ctx = setContextOp(ctx, _s.ctx, ent.OpQuerySelect)
+	if err := _s.prepareQuery(ctx); err != nil {
+		return err
+	}
+	return scanWithInterceptors[*PromoCodeUsageQuery, *PromoCodeUsageSelect](ctx, _s.PromoCodeUsageQuery, _s, _s.inters, v)
+}
+
+func (_s *PromoCodeUsageSelect) sqlScan(ctx context.Context, root *PromoCodeUsageQuery, v any) error {
+	selector := root.sqlQuery(ctx)
+	aggregation := make([]string, 0, len(_s.fns))
+	for _, fn := range _s.fns {
+		aggregation = append(aggregation, fn(selector))
+	}
+	switch n := len(*_s.selector.flds); {
+	case n == 0 && len(aggregation) > 0:
+		selector.Select(aggregation...)
+	case n != 0 && len(aggregation) > 0:
+		selector.AppendSelect(aggregation...)
+	}
+	rows := &sql.Rows{}
+	query, args := selector.Query()
+	if err := _s.driver.Query(ctx, query, args, rows); err != nil {
+		return err
+	}
+	defer rows.Close()
+	return sql.ScanSlice(rows, v)
+}

backend/ent/promocodeusage_update.go

@@ -0,0 +1,510 @@
+// Code generated by ent, DO NOT EDIT.
+
+package ent
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+	"entgo.io/ent/dialect/sql/sqlgraph"
+	"entgo.io/ent/schema/field"
+	"github.com/Wei-Shaw/sub2api/ent/predicate"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
+	"github.com/Wei-Shaw/sub2api/ent/user"
+)
+
+// PromoCodeUsageUpdate is the builder for updating PromoCodeUsage entities.
+type PromoCodeUsageUpdate struct {
+	config
+	hooks    []Hook
+	mutation *PromoCodeUsageMutation
+}
+
+// Where appends a list predicates to the PromoCodeUsageUpdate builder.
+func (_u *PromoCodeUsageUpdate) Where(ps ...predicate.PromoCodeUsage) *PromoCodeUsageUpdate {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// SetPromoCodeID sets the "promo_code_id" field.
+func (_u *PromoCodeUsageUpdate) SetPromoCodeID(v int64) *PromoCodeUsageUpdate {
+	_u.mutation.SetPromoCodeID(v)
+	return _u
+}
+
+// SetNillablePromoCodeID sets the "promo_code_id" field if the given value is not nil.
+func (_u *PromoCodeUsageUpdate) SetNillablePromoCodeID(v *int64) *PromoCodeUsageUpdate {
+	if v != nil {
+		_u.SetPromoCodeID(*v)
+	}
+	return _u
+}
+
+// SetUserID sets the "user_id" field.
+func (_u *PromoCodeUsageUpdate) SetUserID(v int64) *PromoCodeUsageUpdate {
+	_u.mutation.SetUserID(v)
+	return _u
+}
+
+// SetNillableUserID sets the "user_id" field if the given value is not nil.
+func (_u *PromoCodeUsageUpdate) SetNillableUserID(v *int64) *PromoCodeUsageUpdate {
+	if v != nil {
+		_u.SetUserID(*v)
+	}
+	return _u
+}
+
+// SetBonusAmount sets the "bonus_amount" field.
+func (_u *PromoCodeUsageUpdate) SetBonusAmount(v float64) *PromoCodeUsageUpdate {
+	_u.mutation.ResetBonusAmount()
+	_u.mutation.SetBonusAmount(v)
+	return _u
+}
+
+// SetNillableBonusAmount sets the "bonus_amount" field if the given value is not nil.
+func (_u *PromoCodeUsageUpdate) SetNillableBonusAmount(v *float64) *PromoCodeUsageUpdate {
+	if v != nil {
+		_u.SetBonusAmount(*v)
+	}
+	return _u
+}
+
+// AddBonusAmount adds value to the "bonus_amount" field.
+func (_u *PromoCodeUsageUpdate) AddBonusAmount(v float64) *PromoCodeUsageUpdate {
+	_u.mutation.AddBonusAmount(v)
+	return _u
+}
+
+// SetUsedAt sets the "used_at" field.
+func (_u *PromoCodeUsageUpdate) SetUsedAt(v time.Time) *PromoCodeUsageUpdate {
+	_u.mutation.SetUsedAt(v)
+	return _u
+}
+
+// SetNillableUsedAt sets the "used_at" field if the given value is not nil.
+func (_u *PromoCodeUsageUpdate) SetNillableUsedAt(v *time.Time) *PromoCodeUsageUpdate {
+	if v != nil {
+		_u.SetUsedAt(*v)
+	}
+	return _u
+}
+
+// SetPromoCode sets the "promo_code" edge to the PromoCode entity.
+func (_u *PromoCodeUsageUpdate) SetPromoCode(v *PromoCode) *PromoCodeUsageUpdate {
+	return _u.SetPromoCodeID(v.ID)
+}
+
+// SetUser sets the "user" edge to the User entity.
+func (_u *PromoCodeUsageUpdate) SetUser(v *User) *PromoCodeUsageUpdate {
+	return _u.SetUserID(v.ID)
+}
+
+// Mutation returns the PromoCodeUsageMutation object of the builder.
+func (_u *PromoCodeUsageUpdate) Mutation() *PromoCodeUsageMutation {
+	return _u.mutation
+}
+
+// ClearPromoCode clears the "promo_code" edge to the PromoCode entity.
+func (_u *PromoCodeUsageUpdate) ClearPromoCode() *PromoCodeUsageUpdate {
+	_u.mutation.ClearPromoCode()
+	return _u
+}
+
+// ClearUser clears the "user" edge to the User entity.
+func (_u *PromoCodeUsageUpdate) ClearUser() *PromoCodeUsageUpdate {
+	_u.mutation.ClearUser()
+	return _u
+}
+
+// Save executes the query and returns the number of nodes affected by the update operation.
+func (_u *PromoCodeUsageUpdate) Save(ctx context.Context) (int, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *PromoCodeUsageUpdate) SaveX(ctx context.Context) int {
+	affected, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return affected
+}
+
+// Exec executes the query.
+func (_u *PromoCodeUsageUpdate) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *PromoCodeUsageUpdate) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_u *PromoCodeUsageUpdate) check() error {
+	if _u.mutation.PromoCodeCleared() && len(_u.mutation.PromoCodeIDs()) > 0 {
+		return errors.New(`ent: clearing a required unique edge "PromoCodeUsage.promo_code"`)
+	}
+	if _u.mutation.UserCleared() && len(_u.mutation.UserIDs()) > 0 {
+		return errors.New(`ent: clearing a required unique edge "PromoCodeUsage.user"`)
+	}
+	return nil
+}
+
+func (_u *PromoCodeUsageUpdate) sqlSave(ctx context.Context) (_node int, err error) {
+	if err := _u.check(); err != nil {
+		return _node, err
+	}
+	_spec := sqlgraph.NewUpdateSpec(promocodeusage.Table, promocodeusage.Columns, sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64))
+	if ps := _u.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.BonusAmount(); ok {
+		_spec.SetField(promocodeusage.FieldBonusAmount, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedBonusAmount(); ok {
+		_spec.AddField(promocodeusage.FieldBonusAmount, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.UsedAt(); ok {
+		_spec.SetField(promocodeusage.FieldUsedAt, field.TypeTime, value)
+	}
+	if _u.mutation.PromoCodeCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.PromoCodeTable,
+			Columns: []string{promocodeusage.PromoCodeColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocode.FieldID, field.TypeInt64),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.PromoCodeIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.PromoCodeTable,
+			Columns: []string{promocodeusage.PromoCodeColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocode.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	if _u.mutation.UserCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.UserTable,
+			Columns: []string{promocodeusage.UserColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt64),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.UserIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.UserTable,
+			Columns: []string{promocodeusage.UserColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{promocodeusage.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return 0, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}
+
+// PromoCodeUsageUpdateOne is the builder for updating a single PromoCodeUsage entity.
+type PromoCodeUsageUpdateOne struct {
+	config
+	fields   []string
+	hooks    []Hook
+	mutation *PromoCodeUsageMutation
+}
+
+// SetPromoCodeID sets the "promo_code_id" field.
+func (_u *PromoCodeUsageUpdateOne) SetPromoCodeID(v int64) *PromoCodeUsageUpdateOne {
+	_u.mutation.SetPromoCodeID(v)
+	return _u
+}
+
+// SetNillablePromoCodeID sets the "promo_code_id" field if the given value is not nil.
+func (_u *PromoCodeUsageUpdateOne) SetNillablePromoCodeID(v *int64) *PromoCodeUsageUpdateOne {
+	if v != nil {
+		_u.SetPromoCodeID(*v)
+	}
+	return _u
+}
+
+// SetUserID sets the "user_id" field.
+func (_u *PromoCodeUsageUpdateOne) SetUserID(v int64) *PromoCodeUsageUpdateOne {
+	_u.mutation.SetUserID(v)
+	return _u
+}
+
+// SetNillableUserID sets the "user_id" field if the given value is not nil.
+func (_u *PromoCodeUsageUpdateOne) SetNillableUserID(v *int64) *PromoCodeUsageUpdateOne {
+	if v != nil {
+		_u.SetUserID(*v)
+	}
+	return _u
+}
+
+// SetBonusAmount sets the "bonus_amount" field.
+func (_u *PromoCodeUsageUpdateOne) SetBonusAmount(v float64) *PromoCodeUsageUpdateOne {
+	_u.mutation.ResetBonusAmount()
+	_u.mutation.SetBonusAmount(v)
+	return _u
+}
+
+// SetNillableBonusAmount sets the "bonus_amount" field if the given value is not nil.
+func (_u *PromoCodeUsageUpdateOne) SetNillableBonusAmount(v *float64) *PromoCodeUsageUpdateOne {
+	if v != nil {
+		_u.SetBonusAmount(*v)
+	}
+	return _u
+}
+
+// AddBonusAmount adds value to the "bonus_amount" field.
+func (_u *PromoCodeUsageUpdateOne) AddBonusAmount(v float64) *PromoCodeUsageUpdateOne {
+	_u.mutation.AddBonusAmount(v)
+	return _u
+}
+
+// SetUsedAt sets the "used_at" field.
+func (_u *PromoCodeUsageUpdateOne) SetUsedAt(v time.Time) *PromoCodeUsageUpdateOne {
+	_u.mutation.SetUsedAt(v)
+	return _u
+}
+
+// SetNillableUsedAt sets the "used_at" field if the given value is not nil.
+func (_u *PromoCodeUsageUpdateOne) SetNillableUsedAt(v *time.Time) *PromoCodeUsageUpdateOne {
+	if v != nil {
+		_u.SetUsedAt(*v)
+	}
+	return _u
+}
+
+// SetPromoCode sets the "promo_code" edge to the PromoCode entity.
+func (_u *PromoCodeUsageUpdateOne) SetPromoCode(v *PromoCode) *PromoCodeUsageUpdateOne {
+	return _u.SetPromoCodeID(v.ID)
+}
+
+// SetUser sets the "user" edge to the User entity.
+func (_u *PromoCodeUsageUpdateOne) SetUser(v *User) *PromoCodeUsageUpdateOne {
+	return _u.SetUserID(v.ID)
+}
+
+// Mutation returns the PromoCodeUsageMutation object of the builder.
+func (_u *PromoCodeUsageUpdateOne) Mutation() *PromoCodeUsageMutation {
+	return _u.mutation
+}
+
+// ClearPromoCode clears the "promo_code" edge to the PromoCode entity.
+func (_u *PromoCodeUsageUpdateOne) ClearPromoCode() *PromoCodeUsageUpdateOne {
+	_u.mutation.ClearPromoCode()
+	return _u
+}
+
+// ClearUser clears the "user" edge to the User entity.
+func (_u *PromoCodeUsageUpdateOne) ClearUser() *PromoCodeUsageUpdateOne {
+	_u.mutation.ClearUser()
+	return _u
+}
+
+// Where appends a list predicates to the PromoCodeUsageUpdate builder.
+func (_u *PromoCodeUsageUpdateOne) Where(ps ...predicate.PromoCodeUsage) *PromoCodeUsageUpdateOne {
+	_u.mutation.Where(ps...)
+	return _u
+}
+
+// Select allows selecting one or more fields (columns) of the returned entity.
+// The default is selecting all fields defined in the entity schema.
+func (_u *PromoCodeUsageUpdateOne) Select(field string, fields ...string) *PromoCodeUsageUpdateOne {
+	_u.fields = append([]string{field}, fields...)
+	return _u
+}
+
+// Save executes the query and returns the updated PromoCodeUsage entity.
+func (_u *PromoCodeUsageUpdateOne) Save(ctx context.Context) (*PromoCodeUsage, error) {
+	return withHooks(ctx, _u.sqlSave, _u.mutation, _u.hooks)
+}
+
+// SaveX is like Save, but panics if an error occurs.
+func (_u *PromoCodeUsageUpdateOne) SaveX(ctx context.Context) *PromoCodeUsage {
+	node, err := _u.Save(ctx)
+	if err != nil {
+		panic(err)
+	}
+	return node
+}
+
+// Exec executes the query on the entity.
+func (_u *PromoCodeUsageUpdateOne) Exec(ctx context.Context) error {
+	_, err := _u.Save(ctx)
+	return err
+}
+
+// ExecX is like Exec, but panics if an error occurs.
+func (_u *PromoCodeUsageUpdateOne) ExecX(ctx context.Context) {
+	if err := _u.Exec(ctx); err != nil {
+		panic(err)
+	}
+}
+
+// check runs all checks and user-defined validators on the builder.
+func (_u *PromoCodeUsageUpdateOne) check() error {
+	if _u.mutation.PromoCodeCleared() && len(_u.mutation.PromoCodeIDs()) > 0 {
+		return errors.New(`ent: clearing a required unique edge "PromoCodeUsage.promo_code"`)
+	}
+	if _u.mutation.UserCleared() && len(_u.mutation.UserIDs()) > 0 {
+		return errors.New(`ent: clearing a required unique edge "PromoCodeUsage.user"`)
+	}
+	return nil
+}
+
+func (_u *PromoCodeUsageUpdateOne) sqlSave(ctx context.Context) (_node *PromoCodeUsage, err error) {
+	if err := _u.check(); err != nil {
+		return _node, err
+	}
+	_spec := sqlgraph.NewUpdateSpec(promocodeusage.Table, promocodeusage.Columns, sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64))
+	id, ok := _u.mutation.ID()
+	if !ok {
+		return nil, &ValidationError{Name: "id", err: errors.New(`ent: missing "PromoCodeUsage.id" for update`)}
+	}
+	_spec.Node.ID.Value = id
+	if fields := _u.fields; len(fields) > 0 {
+		_spec.Node.Columns = make([]string, 0, len(fields))
+		_spec.Node.Columns = append(_spec.Node.Columns, promocodeusage.FieldID)
+		for _, f := range fields {
+			if !promocodeusage.ValidColumn(f) {
+				return nil, &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
+			}
+			if f != promocodeusage.FieldID {
+				_spec.Node.Columns = append(_spec.Node.Columns, f)
+			}
+		}
+	}
+	if ps := _u.mutation.predicates; len(ps) > 0 {
+		_spec.Predicate = func(selector *sql.Selector) {
+			for i := range ps {
+				ps[i](selector)
+			}
+		}
+	}
+	if value, ok := _u.mutation.BonusAmount(); ok {
+		_spec.SetField(promocodeusage.FieldBonusAmount, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedBonusAmount(); ok {
+		_spec.AddField(promocodeusage.FieldBonusAmount, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.UsedAt(); ok {
+		_spec.SetField(promocodeusage.FieldUsedAt, field.TypeTime, value)
+	}
+	if _u.mutation.PromoCodeCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.PromoCodeTable,
+			Columns: []string{promocodeusage.PromoCodeColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocode.FieldID, field.TypeInt64),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.PromoCodeIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.PromoCodeTable,
+			Columns: []string{promocodeusage.PromoCodeColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocode.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	if _u.mutation.UserCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.UserTable,
+			Columns: []string{promocodeusage.UserColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt64),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.UserIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.M2O,
+			Inverse: true,
+			Table:   promocodeusage.UserTable,
+			Columns: []string{promocodeusage.UserColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(user.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
+	_node = &PromoCodeUsage{config: _u.config}
+	_spec.Assign = _node.assignValues
+	_spec.ScanValues = _node.scanValues
+	if err = sqlgraph.UpdateNode(ctx, _u.driver, _spec); err != nil {
+		if _, ok := err.(*sqlgraph.NotFoundError); ok {
+			err = &NotFoundError{promocodeusage.Label}
+		} else if sqlgraph.IsConstraintError(err) {
+			err = &ConstraintError{msg: err.Error(), wrap: err}
+		}
+		return nil, err
+	}
+	_u.mutation.done = true
+	return _node, nil
+}

backend/ent/proxy_query.go

@@ -9,6 +9,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -25,6 +26,7 @@ type ProxyQuery struct {
 	inters       []Interceptor
 	predicates   []predicate.Proxy
 	withAccounts *AccountQuery
+	modifiers    []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -384,6 +386,9 @@ func (_q *ProxyQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Proxy,
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -439,6 +444,9 @@ func (_q *ProxyQuery) loadAccounts(ctx context.Context, query *AccountQuery, nod
 
 func (_q *ProxyQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -501,6 +509,9 @@ func (_q *ProxyQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -518,6 +529,32 @@ func (_q *ProxyQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *ProxyQuery) ForUpdate(opts ...sql.LockOption) *ProxyQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *ProxyQuery) ForShare(opts ...sql.LockOption) *ProxyQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // ProxyGroupBy is the group-by builder for Proxy entities.
 type ProxyGroupBy struct {
 	selector

backend/ent/redeemcode_query.go

@@ -8,6 +8,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -26,6 +27,7 @@ type RedeemCodeQuery struct {
 	predicates []predicate.RedeemCode
 	withUser   *UserQuery
 	withGroup  *GroupQuery
+	modifiers  []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -420,6 +422,9 @@ func (_q *RedeemCodeQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*R
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -511,6 +516,9 @@ func (_q *RedeemCodeQuery) loadGroup(ctx context.Context, query *GroupQuery, nod
 
 func (_q *RedeemCodeQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -579,6 +587,9 @@ func (_q *RedeemCodeQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -596,6 +607,32 @@ func (_q *RedeemCodeQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *RedeemCodeQuery) ForUpdate(opts ...sql.LockOption) *RedeemCodeQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *RedeemCodeQuery) ForShare(opts ...sql.LockOption) *RedeemCodeQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // RedeemCodeGroupBy is the group-by builder for RedeemCode entities.
 type RedeemCodeGroupBy struct {
 	selector

backend/ent/runtime/runtime.go

@@ -9,6 +9,8 @@ import (
 	"github.com/Wei-Shaw/sub2api/ent/accountgroup"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
 	"github.com/Wei-Shaw/sub2api/ent/group"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
 	"github.com/Wei-Shaw/sub2api/ent/proxy"
 	"github.com/Wei-Shaw/sub2api/ent/redeemcode"
 	"github.com/Wei-Shaw/sub2api/ent/schema"
@@ -274,6 +276,60 @@ func init() {
 	groupDescClaudeCodeOnly := groupFields[14].Descriptor()
 	// group.DefaultClaudeCodeOnly holds the default value on creation for the claude_code_only field.
 	group.DefaultClaudeCodeOnly = groupDescClaudeCodeOnly.Default.(bool)
+	promocodeFields := schema.PromoCode{}.Fields()
+	_ = promocodeFields
+	// promocodeDescCode is the schema descriptor for code field.
+	promocodeDescCode := promocodeFields[0].Descriptor()
+	// promocode.CodeValidator is a validator for the "code" field. It is called by the builders before save.
+	promocode.CodeValidator = func() func(string) error {
+		validators := promocodeDescCode.Validators
+		fns := [...]func(string) error{
+			validators[0].(func(string) error),
+			validators[1].(func(string) error),
+		}
+		return func(code string) error {
+			for _, fn := range fns {
+				if err := fn(code); err != nil {
+					return err
+				}
+			}
+			return nil
+		}
+	}()
+	// promocodeDescBonusAmount is the schema descriptor for bonus_amount field.
+	promocodeDescBonusAmount := promocodeFields[1].Descriptor()
+	// promocode.DefaultBonusAmount holds the default value on creation for the bonus_amount field.
+	promocode.DefaultBonusAmount = promocodeDescBonusAmount.Default.(float64)
+	// promocodeDescMaxUses is the schema descriptor for max_uses field.
+	promocodeDescMaxUses := promocodeFields[2].Descriptor()
+	// promocode.DefaultMaxUses holds the default value on creation for the max_uses field.
+	promocode.DefaultMaxUses = promocodeDescMaxUses.Default.(int)
+	// promocodeDescUsedCount is the schema descriptor for used_count field.
+	promocodeDescUsedCount := promocodeFields[3].Descriptor()
+	// promocode.DefaultUsedCount holds the default value on creation for the used_count field.
+	promocode.DefaultUsedCount = promocodeDescUsedCount.Default.(int)
+	// promocodeDescStatus is the schema descriptor for status field.
+	promocodeDescStatus := promocodeFields[4].Descriptor()
+	// promocode.DefaultStatus holds the default value on creation for the status field.
+	promocode.DefaultStatus = promocodeDescStatus.Default.(string)
+	// promocode.StatusValidator is a validator for the "status" field. It is called by the builders before save.
+	promocode.StatusValidator = promocodeDescStatus.Validators[0].(func(string) error)
+	// promocodeDescCreatedAt is the schema descriptor for created_at field.
+	promocodeDescCreatedAt := promocodeFields[7].Descriptor()
+	// promocode.DefaultCreatedAt holds the default value on creation for the created_at field.
+	promocode.DefaultCreatedAt = promocodeDescCreatedAt.Default.(func() time.Time)
+	// promocodeDescUpdatedAt is the schema descriptor for updated_at field.
+	promocodeDescUpdatedAt := promocodeFields[8].Descriptor()
+	// promocode.DefaultUpdatedAt holds the default value on creation for the updated_at field.
+	promocode.DefaultUpdatedAt = promocodeDescUpdatedAt.Default.(func() time.Time)
+	// promocode.UpdateDefaultUpdatedAt holds the default value on update for the updated_at field.
+	promocode.UpdateDefaultUpdatedAt = promocodeDescUpdatedAt.UpdateDefault.(func() time.Time)
+	promocodeusageFields := schema.PromoCodeUsage{}.Fields()
+	_ = promocodeusageFields
+	// promocodeusageDescUsedAt is the schema descriptor for used_at field.
+	promocodeusageDescUsedAt := promocodeusageFields[3].Descriptor()
+	// promocodeusage.DefaultUsedAt holds the default value on creation for the used_at field.
+	promocodeusage.DefaultUsedAt = promocodeusageDescUsedAt.Default.(func() time.Time)
 	proxyMixin := schema.Proxy{}.Mixin()
 	proxyMixinHooks1 := proxyMixin[1].Hooks()
 	proxy.Hooks[0] = proxyMixinHooks1[0]
@@ -533,16 +589,20 @@ func init() {
 	usagelogDescUserAgent := usagelogFields[24].Descriptor()
 	// usagelog.UserAgentValidator is a validator for the "user_agent" field. It is called by the builders before save.
 	usagelog.UserAgentValidator = usagelogDescUserAgent.Validators[0].(func(string) error)
+	// usagelogDescIPAddress is the schema descriptor for ip_address field.
+	usagelogDescIPAddress := usagelogFields[25].Descriptor()
+	// usagelog.IPAddressValidator is a validator for the "ip_address" field. It is called by the builders before save.
+	usagelog.IPAddressValidator = usagelogDescIPAddress.Validators[0].(func(string) error)
 	// usagelogDescImageCount is the schema descriptor for image_count field.
-	usagelogDescImageCount := usagelogFields[25].Descriptor()
+	usagelogDescImageCount := usagelogFields[26].Descriptor()
 	// usagelog.DefaultImageCount holds the default value on creation for the image_count field.
 	usagelog.DefaultImageCount = usagelogDescImageCount.Default.(int)
 	// usagelogDescImageSize is the schema descriptor for image_size field.
-	usagelogDescImageSize := usagelogFields[26].Descriptor()
+	usagelogDescImageSize := usagelogFields[27].Descriptor()
 	// usagelog.ImageSizeValidator is a validator for the "image_size" field. It is called by the builders before save.
 	usagelog.ImageSizeValidator = usagelogDescImageSize.Validators[0].(func(string) error)
 	// usagelogDescCreatedAt is the schema descriptor for created_at field.
-	usagelogDescCreatedAt := usagelogFields[27].Descriptor()
+	usagelogDescCreatedAt := usagelogFields[28].Descriptor()
 	// usagelog.DefaultCreatedAt holds the default value on creation for the created_at field.
 	usagelog.DefaultCreatedAt = usagelogDescCreatedAt.Default.(func() time.Time)
 	userMixin := schema.User{}.Mixin()

backend/ent/schema/api_key.go

@@ -46,6 +46,12 @@ func (APIKey) Fields() []ent.Field {
 		field.String("status").
 			MaxLen(20).
 			Default(service.StatusActive),
+		field.JSON("ip_whitelist", []string{}).
+			Optional().
+			Comment("Allowed IPs/CIDRs, e.g. [\"192.168.1.100\", \"10.0.0.0/8\"]"),
+		field.JSON("ip_blacklist", []string{}).
+			Optional().
+			Comment("Blocked IPs/CIDRs"),
 	}
 }
 

backend/ent/schema/promo_code.go

@@ -0,0 +1,87 @@
+package schema
+
+import (
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/service"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/index"
+)
+
+// PromoCode holds the schema definition for the PromoCode entity.
+//
+// 注册优惠码：用户注册时使用，可获得赠送余额
+// 与 RedeemCode 不同，PromoCode 支持多次使用（有使用次数限制）
+//
+// 删除策略：硬删除
+type PromoCode struct {
+	ent.Schema
+}
+
+func (PromoCode) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		entsql.Annotation{Table: "promo_codes"},
+	}
+}
+
+func (PromoCode) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("code").
+			MaxLen(32).
+			NotEmpty().
+			Unique().
+			Comment("优惠码"),
+		field.Float("bonus_amount").
+			SchemaType(map[string]string{dialect.Postgres: "decimal(20,8)"}).
+			Default(0).
+			Comment("赠送余额金额"),
+		field.Int("max_uses").
+			Default(0).
+			Comment("最大使用次数，0表示无限制"),
+		field.Int("used_count").
+			Default(0).
+			Comment("已使用次数"),
+		field.String("status").
+			MaxLen(20).
+			Default(service.PromoCodeStatusActive).
+			Comment("状态: active, disabled"),
+		field.Time("expires_at").
+			Optional().
+			Nillable().
+			SchemaType(map[string]string{dialect.Postgres: "timestamptz"}).
+			Comment("过期时间，null表示永不过期"),
+		field.String("notes").
+			Optional().
+			Nillable().
+			SchemaType(map[string]string{dialect.Postgres: "text"}).
+			Comment("备注"),
+		field.Time("created_at").
+			Immutable().
+			Default(time.Now).
+			SchemaType(map[string]string{dialect.Postgres: "timestamptz"}),
+		field.Time("updated_at").
+			Default(time.Now).
+			UpdateDefault(time.Now).
+			SchemaType(map[string]string{dialect.Postgres: "timestamptz"}),
+	}
+}
+
+func (PromoCode) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.To("usage_records", PromoCodeUsage.Type),
+	}
+}
+
+func (PromoCode) Indexes() []ent.Index {
+	return []ent.Index{
+		// code 字段已在 Fields() 中声明 Unique()，无需重复索引
+		index.Fields("status"),
+		index.Fields("expires_at"),
+	}
+}

backend/ent/schema/promo_code_usage.go

@@ -0,0 +1,66 @@
+package schema
+
+import (
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/index"
+)
+
+// PromoCodeUsage holds the schema definition for the PromoCodeUsage entity.
+//
+// 优惠码使用记录：记录每个用户使用优惠码的情况
+type PromoCodeUsage struct {
+	ent.Schema
+}
+
+func (PromoCodeUsage) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		entsql.Annotation{Table: "promo_code_usages"},
+	}
+}
+
+func (PromoCodeUsage) Fields() []ent.Field {
+	return []ent.Field{
+		field.Int64("promo_code_id").
+			Comment("优惠码ID"),
+		field.Int64("user_id").
+			Comment("使用用户ID"),
+		field.Float("bonus_amount").
+			SchemaType(map[string]string{dialect.Postgres: "decimal(20,8)"}).
+			Comment("实际赠送金额"),
+		field.Time("used_at").
+			Default(time.Now).
+			SchemaType(map[string]string{dialect.Postgres: "timestamptz"}).
+			Comment("使用时间"),
+	}
+}
+
+func (PromoCodeUsage) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("promo_code", PromoCode.Type).
+			Ref("usage_records").
+			Field("promo_code_id").
+			Required().
+			Unique(),
+		edge.From("user", User.Type).
+			Ref("promo_code_usages").
+			Field("user_id").
+			Required().
+			Unique(),
+	}
+}
+
+func (PromoCodeUsage) Indexes() []ent.Index {
+	return []ent.Index{
+		index.Fields("promo_code_id"),
+		index.Fields("user_id"),
+		// 每个用户每个优惠码只能使用一次
+		index.Fields("promo_code_id", "user_id").Unique(),
+	}
+}

backend/ent/schema/usage_log.go

@@ -100,6 +100,10 @@ func (UsageLog) Fields() []ent.Field {
 			MaxLen(512).
 			Optional().
 			Nillable(),
+		field.String("ip_address").
+			MaxLen(45). // 支持 IPv6
+			Optional().
+			Nillable(),
 
 		// 图片生成字段（仅 gemini-3-pro-image 等图片模型使用）
 		field.Int("image_count").

backend/ent/schema/user.go

@@ -74,6 +74,7 @@ func (User) Edges() []ent.Edge {
 			Through("user_allowed_groups", UserAllowedGroup.Type),
 		edge.To("usage_logs", UsageLog.Type),
 		edge.To("attribute_values", UserAttributeValue.Type),
+		edge.To("promo_code_usages", PromoCodeUsage.Type),
 	}
 }
 

backend/ent/setting_query.go

@@ -8,6 +8,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -22,6 +23,7 @@ type SettingQuery struct {
 	order      []setting.OrderOption
 	inters     []Interceptor
 	predicates []predicate.Setting
+	modifiers  []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -343,6 +345,9 @@ func (_q *SettingQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Sett
 		nodes = append(nodes, node)
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -357,6 +362,9 @@ func (_q *SettingQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Sett
 
 func (_q *SettingQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -419,6 +427,9 @@ func (_q *SettingQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -436,6 +447,32 @@ func (_q *SettingQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *SettingQuery) ForUpdate(opts ...sql.LockOption) *SettingQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *SettingQuery) ForShare(opts ...sql.LockOption) *SettingQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // SettingGroupBy is the group-by builder for Setting entities.
 type SettingGroupBy struct {
 	selector

backend/ent/tx.go

@@ -22,6 +22,10 @@ type Tx struct {
 	AccountGroup *AccountGroupClient
 	// Group is the client for interacting with the Group builders.
 	Group *GroupClient
+	// PromoCode is the client for interacting with the PromoCode builders.
+	PromoCode *PromoCodeClient
+	// PromoCodeUsage is the client for interacting with the PromoCodeUsage builders.
+	PromoCodeUsage *PromoCodeUsageClient
 	// Proxy is the client for interacting with the Proxy builders.
 	Proxy *ProxyClient
 	// RedeemCode is the client for interacting with the RedeemCode builders.
@@ -175,6 +179,8 @@ func (tx *Tx) init() {
 	tx.Account = NewAccountClient(tx.config)
 	tx.AccountGroup = NewAccountGroupClient(tx.config)
 	tx.Group = NewGroupClient(tx.config)
+	tx.PromoCode = NewPromoCodeClient(tx.config)
+	tx.PromoCodeUsage = NewPromoCodeUsageClient(tx.config)
 	tx.Proxy = NewProxyClient(tx.config)
 	tx.RedeemCode = NewRedeemCodeClient(tx.config)
 	tx.Setting = NewSettingClient(tx.config)

backend/ent/usagelog.go

@@ -72,6 +72,8 @@ type UsageLog struct {
 	FirstTokenMs *int `json:"first_token_ms,omitempty"`
 	// UserAgent holds the value of the "user_agent" field.
 	UserAgent *string `json:"user_agent,omitempty"`
+	// IPAddress holds the value of the "ip_address" field.
+	IPAddress *string `json:"ip_address,omitempty"`
 	// ImageCount holds the value of the "image_count" field.
 	ImageCount int `json:"image_count,omitempty"`
 	// ImageSize holds the value of the "image_size" field.
@@ -167,7 +169,7 @@ func (*UsageLog) scanValues(columns []string) ([]any, error) {
 			values[i] = new(sql.NullFloat64)
 		case usagelog.FieldID, usagelog.FieldUserID, usagelog.FieldAPIKeyID, usagelog.FieldAccountID, usagelog.FieldGroupID, usagelog.FieldSubscriptionID, usagelog.FieldInputTokens, usagelog.FieldOutputTokens, usagelog.FieldCacheCreationTokens, usagelog.FieldCacheReadTokens, usagelog.FieldCacheCreation5mTokens, usagelog.FieldCacheCreation1hTokens, usagelog.FieldBillingType, usagelog.FieldDurationMs, usagelog.FieldFirstTokenMs, usagelog.FieldImageCount:
 			values[i] = new(sql.NullInt64)
-		case usagelog.FieldRequestID, usagelog.FieldModel, usagelog.FieldUserAgent, usagelog.FieldImageSize:
+		case usagelog.FieldRequestID, usagelog.FieldModel, usagelog.FieldUserAgent, usagelog.FieldIPAddress, usagelog.FieldImageSize:
 			values[i] = new(sql.NullString)
 		case usagelog.FieldCreatedAt:
 			values[i] = new(sql.NullTime)
@@ -347,6 +349,13 @@ func (_m *UsageLog) assignValues(columns []string, values []any) error {
 				_m.UserAgent = new(string)
 				*_m.UserAgent = value.String
 			}
+		case usagelog.FieldIPAddress:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field ip_address", values[i])
+			} else if value.Valid {
+				_m.IPAddress = new(string)
+				*_m.IPAddress = value.String
+			}
 		case usagelog.FieldImageCount:
 			if value, ok := values[i].(*sql.NullInt64); !ok {
 				return fmt.Errorf("unexpected type %T for field image_count", values[i])
@@ -512,6 +521,11 @@ func (_m *UsageLog) String() string {
 		builder.WriteString(*v)
 	}
 	builder.WriteString(", ")
+	if v := _m.IPAddress; v != nil {
+		builder.WriteString("ip_address=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
 	builder.WriteString("image_count=")
 	builder.WriteString(fmt.Sprintf("%v", _m.ImageCount))
 	builder.WriteString(", ")

backend/ent/usagelog/usagelog.go

@@ -64,6 +64,8 @@ const (
 	FieldFirstTokenMs = "first_token_ms"
 	// FieldUserAgent holds the string denoting the user_agent field in the database.
 	FieldUserAgent = "user_agent"
+	// FieldIPAddress holds the string denoting the ip_address field in the database.
+	FieldIPAddress = "ip_address"
 	// FieldImageCount holds the string denoting the image_count field in the database.
 	FieldImageCount = "image_count"
 	// FieldImageSize holds the string denoting the image_size field in the database.
@@ -147,6 +149,7 @@ var Columns = []string{
 	FieldDurationMs,
 	FieldFirstTokenMs,
 	FieldUserAgent,
+	FieldIPAddress,
 	FieldImageCount,
 	FieldImageSize,
 	FieldCreatedAt,
@@ -199,6 +202,8 @@ var (
 	DefaultStream bool
 	// UserAgentValidator is a validator for the "user_agent" field. It is called by the builders before save.
 	UserAgentValidator func(string) error
+	// IPAddressValidator is a validator for the "ip_address" field. It is called by the builders before save.
+	IPAddressValidator func(string) error
 	// DefaultImageCount holds the default value on creation for the "image_count" field.
 	DefaultImageCount int
 	// ImageSizeValidator is a validator for the "image_size" field. It is called by the builders before save.
@@ -340,6 +345,11 @@ func ByUserAgent(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldUserAgent, opts...).ToFunc()
 }
 
+// ByIPAddress orders the results by the ip_address field.
+func ByIPAddress(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldIPAddress, opts...).ToFunc()
+}
+
 // ByImageCount orders the results by the image_count field.
 func ByImageCount(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldImageCount, opts...).ToFunc()

backend/ent/usagelog/where.go

@@ -180,6 +180,11 @@ func UserAgent(v string) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldUserAgent, v))
 }
 
+// IPAddress applies equality check predicate on the "ip_address" field. It's identical to IPAddressEQ.
+func IPAddress(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldIPAddress, v))
+}
+
 // ImageCount applies equality check predicate on the "image_count" field. It's identical to ImageCountEQ.
 func ImageCount(v int) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldImageCount, v))
@@ -1190,6 +1195,81 @@ func UserAgentContainsFold(v string) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldContainsFold(FieldUserAgent, v))
 }
 
+// IPAddressEQ applies the EQ predicate on the "ip_address" field.
+func IPAddressEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldIPAddress, v))
+}
+
+// IPAddressNEQ applies the NEQ predicate on the "ip_address" field.
+func IPAddressNEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldIPAddress, v))
+}
+
+// IPAddressIn applies the In predicate on the "ip_address" field.
+func IPAddressIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldIPAddress, vs...))
+}
+
+// IPAddressNotIn applies the NotIn predicate on the "ip_address" field.
+func IPAddressNotIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldIPAddress, vs...))
+}
+
+// IPAddressGT applies the GT predicate on the "ip_address" field.
+func IPAddressGT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldIPAddress, v))
+}
+
+// IPAddressGTE applies the GTE predicate on the "ip_address" field.
+func IPAddressGTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldIPAddress, v))
+}
+
+// IPAddressLT applies the LT predicate on the "ip_address" field.
+func IPAddressLT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldIPAddress, v))
+}
+
+// IPAddressLTE applies the LTE predicate on the "ip_address" field.
+func IPAddressLTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldIPAddress, v))
+}
+
+// IPAddressContains applies the Contains predicate on the "ip_address" field.
+func IPAddressContains(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContains(FieldIPAddress, v))
+}
+
+// IPAddressHasPrefix applies the HasPrefix predicate on the "ip_address" field.
+func IPAddressHasPrefix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasPrefix(FieldIPAddress, v))
+}
+
+// IPAddressHasSuffix applies the HasSuffix predicate on the "ip_address" field.
+func IPAddressHasSuffix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasSuffix(FieldIPAddress, v))
+}
+
+// IPAddressIsNil applies the IsNil predicate on the "ip_address" field.
+func IPAddressIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldIPAddress))
+}
+
+// IPAddressNotNil applies the NotNil predicate on the "ip_address" field.
+func IPAddressNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldIPAddress))
+}
+
+// IPAddressEqualFold applies the EqualFold predicate on the "ip_address" field.
+func IPAddressEqualFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEqualFold(FieldIPAddress, v))
+}
+
+// IPAddressContainsFold applies the ContainsFold predicate on the "ip_address" field.
+func IPAddressContainsFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContainsFold(FieldIPAddress, v))
+}
+
 // ImageCountEQ applies the EQ predicate on the "image_count" field.
 func ImageCountEQ(v int) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldImageCount, v))

backend/ent/usagelog_create.go

@@ -337,6 +337,20 @@ func (_c *UsageLogCreate) SetNillableUserAgent(v *string) *UsageLogCreate {
 	return _c
 }
 
+// SetIPAddress sets the "ip_address" field.
+func (_c *UsageLogCreate) SetIPAddress(v string) *UsageLogCreate {
+	_c.mutation.SetIPAddress(v)
+	return _c
+}
+
+// SetNillableIPAddress sets the "ip_address" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableIPAddress(v *string) *UsageLogCreate {
+	if v != nil {
+		_c.SetIPAddress(*v)
+	}
+	return _c
+}
+
 // SetImageCount sets the "image_count" field.
 func (_c *UsageLogCreate) SetImageCount(v int) *UsageLogCreate {
 	_c.mutation.SetImageCount(v)
@@ -586,6 +600,11 @@ func (_c *UsageLogCreate) check() error {
 			return &ValidationError{Name: "user_agent", err: fmt.Errorf(`ent: validator failed for field "UsageLog.user_agent": %w`, err)}
 		}
 	}
+	if v, ok := _c.mutation.IPAddress(); ok {
+		if err := usagelog.IPAddressValidator(v); err != nil {
+			return &ValidationError{Name: "ip_address", err: fmt.Errorf(`ent: validator failed for field "UsageLog.ip_address": %w`, err)}
+		}
+	}
 	if _, ok := _c.mutation.ImageCount(); !ok {
 		return &ValidationError{Name: "image_count", err: errors.New(`ent: missing required field "UsageLog.image_count"`)}
 	}
@@ -713,6 +732,10 @@ func (_c *UsageLogCreate) createSpec() (*UsageLog, *sqlgraph.CreateSpec) {
 		_spec.SetField(usagelog.FieldUserAgent, field.TypeString, value)
 		_node.UserAgent = &value
 	}
+	if value, ok := _c.mutation.IPAddress(); ok {
+		_spec.SetField(usagelog.FieldIPAddress, field.TypeString, value)
+		_node.IPAddress = &value
+	}
 	if value, ok := _c.mutation.ImageCount(); ok {
 		_spec.SetField(usagelog.FieldImageCount, field.TypeInt, value)
 		_node.ImageCount = value
@@ -1288,6 +1311,24 @@ func (u *UsageLogUpsert) ClearUserAgent() *UsageLogUpsert {
 	return u
 }
 
+// SetIPAddress sets the "ip_address" field.
+func (u *UsageLogUpsert) SetIPAddress(v string) *UsageLogUpsert {
+	u.Set(usagelog.FieldIPAddress, v)
+	return u
+}
+
+// UpdateIPAddress sets the "ip_address" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateIPAddress() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldIPAddress)
+	return u
+}
+
+// ClearIPAddress clears the value of the "ip_address" field.
+func (u *UsageLogUpsert) ClearIPAddress() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldIPAddress)
+	return u
+}
+
 // SetImageCount sets the "image_count" field.
 func (u *UsageLogUpsert) SetImageCount(v int) *UsageLogUpsert {
 	u.Set(usagelog.FieldImageCount, v)
@@ -1866,6 +1907,27 @@ func (u *UsageLogUpsertOne) ClearUserAgent() *UsageLogUpsertOne {
 	})
 }
 
+// SetIPAddress sets the "ip_address" field.
+func (u *UsageLogUpsertOne) SetIPAddress(v string) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetIPAddress(v)
+	})
+}
+
+// UpdateIPAddress sets the "ip_address" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateIPAddress() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateIPAddress()
+	})
+}
+
+// ClearIPAddress clears the value of the "ip_address" field.
+func (u *UsageLogUpsertOne) ClearIPAddress() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearIPAddress()
+	})
+}
+
 // SetImageCount sets the "image_count" field.
 func (u *UsageLogUpsertOne) SetImageCount(v int) *UsageLogUpsertOne {
 	return u.Update(func(s *UsageLogUpsert) {
@@ -2616,6 +2678,27 @@ func (u *UsageLogUpsertBulk) ClearUserAgent() *UsageLogUpsertBulk {
 	})
 }
 
+// SetIPAddress sets the "ip_address" field.
+func (u *UsageLogUpsertBulk) SetIPAddress(v string) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetIPAddress(v)
+	})
+}
+
+// UpdateIPAddress sets the "ip_address" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateIPAddress() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateIPAddress()
+	})
+}
+
+// ClearIPAddress clears the value of the "ip_address" field.
+func (u *UsageLogUpsertBulk) ClearIPAddress() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearIPAddress()
+	})
+}
+
 // SetImageCount sets the "image_count" field.
 func (u *UsageLogUpsertBulk) SetImageCount(v int) *UsageLogUpsertBulk {
 	return u.Update(func(s *UsageLogUpsert) {

backend/ent/usagelog_query.go

@@ -8,6 +8,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -32,6 +33,7 @@ type UsageLogQuery struct {
 	withAccount      *AccountQuery
 	withGroup        *GroupQuery
 	withSubscription *UserSubscriptionQuery
+	modifiers        []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -531,6 +533,9 @@ func (_q *UsageLogQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*Usa
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -727,6 +732,9 @@ func (_q *UsageLogQuery) loadSubscription(ctx context.Context, query *UserSubscr
 
 func (_q *UsageLogQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -804,6 +812,9 @@ func (_q *UsageLogQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -821,6 +832,32 @@ func (_q *UsageLogQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *UsageLogQuery) ForUpdate(opts ...sql.LockOption) *UsageLogQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *UsageLogQuery) ForShare(opts ...sql.LockOption) *UsageLogQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // UsageLogGroupBy is the group-by builder for UsageLog entities.
 type UsageLogGroupBy struct {
 	selector

backend/ent/usagelog_update.go

@@ -524,6 +524,26 @@ func (_u *UsageLogUpdate) ClearUserAgent() *UsageLogUpdate {
 	return _u
 }
 
+// SetIPAddress sets the "ip_address" field.
+func (_u *UsageLogUpdate) SetIPAddress(v string) *UsageLogUpdate {
+	_u.mutation.SetIPAddress(v)
+	return _u
+}
+
+// SetNillableIPAddress sets the "ip_address" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableIPAddress(v *string) *UsageLogUpdate {
+	if v != nil {
+		_u.SetIPAddress(*v)
+	}
+	return _u
+}
+
+// ClearIPAddress clears the value of the "ip_address" field.
+func (_u *UsageLogUpdate) ClearIPAddress() *UsageLogUpdate {
+	_u.mutation.ClearIPAddress()
+	return _u
+}
+
 // SetImageCount sets the "image_count" field.
 func (_u *UsageLogUpdate) SetImageCount(v int) *UsageLogUpdate {
 	_u.mutation.ResetImageCount()
@@ -669,6 +689,11 @@ func (_u *UsageLogUpdate) check() error {
 			return &ValidationError{Name: "user_agent", err: fmt.Errorf(`ent: validator failed for field "UsageLog.user_agent": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.IPAddress(); ok {
+		if err := usagelog.IPAddressValidator(v); err != nil {
+			return &ValidationError{Name: "ip_address", err: fmt.Errorf(`ent: validator failed for field "UsageLog.ip_address": %w`, err)}
+		}
+	}
 	if v, ok := _u.mutation.ImageSize(); ok {
 		if err := usagelog.ImageSizeValidator(v); err != nil {
 			return &ValidationError{Name: "image_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size": %w`, err)}
@@ -815,6 +840,12 @@ func (_u *UsageLogUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if _u.mutation.UserAgentCleared() {
 		_spec.ClearField(usagelog.FieldUserAgent, field.TypeString)
 	}
+	if value, ok := _u.mutation.IPAddress(); ok {
+		_spec.SetField(usagelog.FieldIPAddress, field.TypeString, value)
+	}
+	if _u.mutation.IPAddressCleared() {
+		_spec.ClearField(usagelog.FieldIPAddress, field.TypeString)
+	}
 	if value, ok := _u.mutation.ImageCount(); ok {
 		_spec.SetField(usagelog.FieldImageCount, field.TypeInt, value)
 	}
@@ -1484,6 +1515,26 @@ func (_u *UsageLogUpdateOne) ClearUserAgent() *UsageLogUpdateOne {
 	return _u
 }
 
+// SetIPAddress sets the "ip_address" field.
+func (_u *UsageLogUpdateOne) SetIPAddress(v string) *UsageLogUpdateOne {
+	_u.mutation.SetIPAddress(v)
+	return _u
+}
+
+// SetNillableIPAddress sets the "ip_address" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableIPAddress(v *string) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetIPAddress(*v)
+	}
+	return _u
+}
+
+// ClearIPAddress clears the value of the "ip_address" field.
+func (_u *UsageLogUpdateOne) ClearIPAddress() *UsageLogUpdateOne {
+	_u.mutation.ClearIPAddress()
+	return _u
+}
+
 // SetImageCount sets the "image_count" field.
 func (_u *UsageLogUpdateOne) SetImageCount(v int) *UsageLogUpdateOne {
 	_u.mutation.ResetImageCount()
@@ -1642,6 +1693,11 @@ func (_u *UsageLogUpdateOne) check() error {
 			return &ValidationError{Name: "user_agent", err: fmt.Errorf(`ent: validator failed for field "UsageLog.user_agent": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.IPAddress(); ok {
+		if err := usagelog.IPAddressValidator(v); err != nil {
+			return &ValidationError{Name: "ip_address", err: fmt.Errorf(`ent: validator failed for field "UsageLog.ip_address": %w`, err)}
+		}
+	}
 	if v, ok := _u.mutation.ImageSize(); ok {
 		if err := usagelog.ImageSizeValidator(v); err != nil {
 			return &ValidationError{Name: "image_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size": %w`, err)}
@@ -1805,6 +1861,12 @@ func (_u *UsageLogUpdateOne) sqlSave(ctx context.Context) (_node *UsageLog, err
 	if _u.mutation.UserAgentCleared() {
 		_spec.ClearField(usagelog.FieldUserAgent, field.TypeString)
 	}
+	if value, ok := _u.mutation.IPAddress(); ok {
+		_spec.SetField(usagelog.FieldIPAddress, field.TypeString, value)
+	}
+	if _u.mutation.IPAddressCleared() {
+		_spec.ClearField(usagelog.FieldIPAddress, field.TypeString)
+	}
 	if value, ok := _u.mutation.ImageCount(); ok {
 		_spec.SetField(usagelog.FieldImageCount, field.TypeInt, value)
 	}

backend/ent/user.go

@@ -61,11 +61,13 @@ type UserEdges struct {
 	UsageLogs []*UsageLog `json:"usage_logs,omitempty"`
 	// AttributeValues holds the value of the attribute_values edge.
 	AttributeValues []*UserAttributeValue `json:"attribute_values,omitempty"`
+	// PromoCodeUsages holds the value of the promo_code_usages edge.
+	PromoCodeUsages []*PromoCodeUsage `json:"promo_code_usages,omitempty"`
 	// UserAllowedGroups holds the value of the user_allowed_groups edge.
 	UserAllowedGroups []*UserAllowedGroup `json:"user_allowed_groups,omitempty"`
 	// loadedTypes holds the information for reporting if a
 	// type was loaded (or requested) in eager-loading or not.
-	loadedTypes [8]bool
+	loadedTypes [9]bool
 }
 
 // APIKeysOrErr returns the APIKeys value or an error if the edge
@@ -131,10 +133,19 @@ func (e UserEdges) AttributeValuesOrErr() ([]*UserAttributeValue, error) {
 	return nil, &NotLoadedError{edge: "attribute_values"}
 }
 
+// PromoCodeUsagesOrErr returns the PromoCodeUsages value or an error if the edge
+// was not loaded in eager-loading.
+func (e UserEdges) PromoCodeUsagesOrErr() ([]*PromoCodeUsage, error) {
+	if e.loadedTypes[7] {
+		return e.PromoCodeUsages, nil
+	}
+	return nil, &NotLoadedError{edge: "promo_code_usages"}
+}
+
 // UserAllowedGroupsOrErr returns the UserAllowedGroups value or an error if the edge
 // was not loaded in eager-loading.
 func (e UserEdges) UserAllowedGroupsOrErr() ([]*UserAllowedGroup, error) {
-	if e.loadedTypes[7] {
+	if e.loadedTypes[8] {
 		return e.UserAllowedGroups, nil
 	}
 	return nil, &NotLoadedError{edge: "user_allowed_groups"}
@@ -289,6 +300,11 @@ func (_m *User) QueryAttributeValues() *UserAttributeValueQuery {
 	return NewUserClient(_m.config).QueryAttributeValues(_m)
 }
 
+// QueryPromoCodeUsages queries the "promo_code_usages" edge of the User entity.
+func (_m *User) QueryPromoCodeUsages() *PromoCodeUsageQuery {
+	return NewUserClient(_m.config).QueryPromoCodeUsages(_m)
+}
+
 // QueryUserAllowedGroups queries the "user_allowed_groups" edge of the User entity.
 func (_m *User) QueryUserAllowedGroups() *UserAllowedGroupQuery {
 	return NewUserClient(_m.config).QueryUserAllowedGroups(_m)

backend/ent/user/user.go

@@ -51,6 +51,8 @@ const (
 	EdgeUsageLogs = "usage_logs"
 	// EdgeAttributeValues holds the string denoting the attribute_values edge name in mutations.
 	EdgeAttributeValues = "attribute_values"
+	// EdgePromoCodeUsages holds the string denoting the promo_code_usages edge name in mutations.
+	EdgePromoCodeUsages = "promo_code_usages"
 	// EdgeUserAllowedGroups holds the string denoting the user_allowed_groups edge name in mutations.
 	EdgeUserAllowedGroups = "user_allowed_groups"
 	// Table holds the table name of the user in the database.
@@ -102,6 +104,13 @@ const (
 	AttributeValuesInverseTable = "user_attribute_values"
 	// AttributeValuesColumn is the table column denoting the attribute_values relation/edge.
 	AttributeValuesColumn = "user_id"
+	// PromoCodeUsagesTable is the table that holds the promo_code_usages relation/edge.
+	PromoCodeUsagesTable = "promo_code_usages"
+	// PromoCodeUsagesInverseTable is the table name for the PromoCodeUsage entity.
+	// It exists in this package in order to avoid circular dependency with the "promocodeusage" package.
+	PromoCodeUsagesInverseTable = "promo_code_usages"
+	// PromoCodeUsagesColumn is the table column denoting the promo_code_usages relation/edge.
+	PromoCodeUsagesColumn = "user_id"
 	// UserAllowedGroupsTable is the table that holds the user_allowed_groups relation/edge.
 	UserAllowedGroupsTable = "user_allowed_groups"
 	// UserAllowedGroupsInverseTable is the table name for the UserAllowedGroup entity.
@@ -342,6 +351,20 @@ func ByAttributeValues(term sql.OrderTerm, terms ...sql.OrderTerm) OrderOption {
 	}
 }
 
+// ByPromoCodeUsagesCount orders the results by promo_code_usages count.
+func ByPromoCodeUsagesCount(opts ...sql.OrderTermOption) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborsCount(s, newPromoCodeUsagesStep(), opts...)
+	}
+}
+
+// ByPromoCodeUsages orders the results by promo_code_usages terms.
+func ByPromoCodeUsages(term sql.OrderTerm, terms ...sql.OrderTerm) OrderOption {
+	return func(s *sql.Selector) {
+		sqlgraph.OrderByNeighborTerms(s, newPromoCodeUsagesStep(), append([]sql.OrderTerm{term}, terms...)...)
+	}
+}
+
 // ByUserAllowedGroupsCount orders the results by user_allowed_groups count.
 func ByUserAllowedGroupsCount(opts ...sql.OrderTermOption) OrderOption {
 	return func(s *sql.Selector) {
@@ -404,6 +427,13 @@ func newAttributeValuesStep() *sqlgraph.Step {
 		sqlgraph.Edge(sqlgraph.O2M, false, AttributeValuesTable, AttributeValuesColumn),
 	)
 }
+func newPromoCodeUsagesStep() *sqlgraph.Step {
+	return sqlgraph.NewStep(
+		sqlgraph.From(Table, FieldID),
+		sqlgraph.To(PromoCodeUsagesInverseTable, FieldID),
+		sqlgraph.Edge(sqlgraph.O2M, false, PromoCodeUsagesTable, PromoCodeUsagesColumn),
+	)
+}
 func newUserAllowedGroupsStep() *sqlgraph.Step {
 	return sqlgraph.NewStep(
 		sqlgraph.From(Table, FieldID),

backend/ent/user/where.go

@@ -871,6 +871,29 @@ func HasAttributeValuesWith(preds ...predicate.UserAttributeValue) predicate.Use
 	})
 }
 
+// HasPromoCodeUsages applies the HasEdge predicate on the "promo_code_usages" edge.
+func HasPromoCodeUsages() predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		step := sqlgraph.NewStep(
+			sqlgraph.From(Table, FieldID),
+			sqlgraph.Edge(sqlgraph.O2M, false, PromoCodeUsagesTable, PromoCodeUsagesColumn),
+		)
+		sqlgraph.HasNeighbors(s, step)
+	})
+}
+
+// HasPromoCodeUsagesWith applies the HasEdge predicate on the "promo_code_usages" edge with a given conditions (other predicates).
+func HasPromoCodeUsagesWith(preds ...predicate.PromoCodeUsage) predicate.User {
+	return predicate.User(func(s *sql.Selector) {
+		step := newPromoCodeUsagesStep()
+		sqlgraph.HasNeighborsWith(s, step, func(s *sql.Selector) {
+			for _, p := range preds {
+				p(s)
+			}
+		})
+	})
+}
+
 // HasUserAllowedGroups applies the HasEdge predicate on the "user_allowed_groups" edge.
 func HasUserAllowedGroups() predicate.User {
 	return predicate.User(func(s *sql.Selector) {

backend/ent/user_create.go

@@ -13,6 +13,7 @@ import (
 	"entgo.io/ent/schema/field"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
 	"github.com/Wei-Shaw/sub2api/ent/group"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
 	"github.com/Wei-Shaw/sub2api/ent/redeemcode"
 	"github.com/Wei-Shaw/sub2api/ent/usagelog"
 	"github.com/Wei-Shaw/sub2api/ent/user"
@@ -271,6 +272,21 @@ func (_c *UserCreate) AddAttributeValues(v ...*UserAttributeValue) *UserCreate {
 	return _c.AddAttributeValueIDs(ids...)
 }
 
+// AddPromoCodeUsageIDs adds the "promo_code_usages" edge to the PromoCodeUsage entity by IDs.
+func (_c *UserCreate) AddPromoCodeUsageIDs(ids ...int64) *UserCreate {
+	_c.mutation.AddPromoCodeUsageIDs(ids...)
+	return _c
+}
+
+// AddPromoCodeUsages adds the "promo_code_usages" edges to the PromoCodeUsage entity.
+func (_c *UserCreate) AddPromoCodeUsages(v ...*PromoCodeUsage) *UserCreate {
+	ids := make([]int64, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _c.AddPromoCodeUsageIDs(ids...)
+}
+
 // Mutation returns the UserMutation object of the builder.
 func (_c *UserCreate) Mutation() *UserMutation {
 	return _c.mutation
@@ -593,6 +609,22 @@ func (_c *UserCreate) createSpec() (*User, *sqlgraph.CreateSpec) {
 		}
 		_spec.Edges = append(_spec.Edges, edge)
 	}
+	if nodes := _c.mutation.PromoCodeUsagesIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   user.PromoCodeUsagesTable,
+			Columns: []string{user.PromoCodeUsagesColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges = append(_spec.Edges, edge)
+	}
 	return _node, _spec
 }
 

backend/ent/user_query.go

@@ -9,12 +9,14 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
 	"github.com/Wei-Shaw/sub2api/ent/group"
 	"github.com/Wei-Shaw/sub2api/ent/predicate"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
 	"github.com/Wei-Shaw/sub2api/ent/redeemcode"
 	"github.com/Wei-Shaw/sub2api/ent/usagelog"
 	"github.com/Wei-Shaw/sub2api/ent/user"
@@ -37,7 +39,9 @@ type UserQuery struct {
 	withAllowedGroups         *GroupQuery
 	withUsageLogs             *UsageLogQuery
 	withAttributeValues       *UserAttributeValueQuery
+	withPromoCodeUsages       *PromoCodeUsageQuery
 	withUserAllowedGroups     *UserAllowedGroupQuery
+	modifiers                 []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -228,6 +232,28 @@ func (_q *UserQuery) QueryAttributeValues() *UserAttributeValueQuery {
 	return query
 }
 
+// QueryPromoCodeUsages chains the current query on the "promo_code_usages" edge.
+func (_q *UserQuery) QueryPromoCodeUsages() *PromoCodeUsageQuery {
+	query := (&PromoCodeUsageClient{config: _q.config}).Query()
+	query.path = func(ctx context.Context) (fromU *sql.Selector, err error) {
+		if err := _q.prepareQuery(ctx); err != nil {
+			return nil, err
+		}
+		selector := _q.sqlQuery(ctx)
+		if err := selector.Err(); err != nil {
+			return nil, err
+		}
+		step := sqlgraph.NewStep(
+			sqlgraph.From(user.Table, user.FieldID, selector),
+			sqlgraph.To(promocodeusage.Table, promocodeusage.FieldID),
+			sqlgraph.Edge(sqlgraph.O2M, false, user.PromoCodeUsagesTable, user.PromoCodeUsagesColumn),
+		)
+		fromU = sqlgraph.SetNeighbors(_q.driver.Dialect(), step)
+		return fromU, nil
+	}
+	return query
+}
+
 // QueryUserAllowedGroups chains the current query on the "user_allowed_groups" edge.
 func (_q *UserQuery) QueryUserAllowedGroups() *UserAllowedGroupQuery {
 	query := (&UserAllowedGroupClient{config: _q.config}).Query()
@@ -449,6 +475,7 @@ func (_q *UserQuery) Clone() *UserQuery {
 		withAllowedGroups:         _q.withAllowedGroups.Clone(),
 		withUsageLogs:             _q.withUsageLogs.Clone(),
 		withAttributeValues:       _q.withAttributeValues.Clone(),
+		withPromoCodeUsages:       _q.withPromoCodeUsages.Clone(),
 		withUserAllowedGroups:     _q.withUserAllowedGroups.Clone(),
 		// clone intermediate query.
 		sql:  _q.sql.Clone(),
@@ -533,6 +560,17 @@ func (_q *UserQuery) WithAttributeValues(opts ...func(*UserAttributeValueQuery))
 	return _q
 }
 
+// WithPromoCodeUsages tells the query-builder to eager-load the nodes that are connected to
+// the "promo_code_usages" edge. The optional arguments are used to configure the query builder of the edge.
+func (_q *UserQuery) WithPromoCodeUsages(opts ...func(*PromoCodeUsageQuery)) *UserQuery {
+	query := (&PromoCodeUsageClient{config: _q.config}).Query()
+	for _, opt := range opts {
+		opt(query)
+	}
+	_q.withPromoCodeUsages = query
+	return _q
+}
+
 // WithUserAllowedGroups tells the query-builder to eager-load the nodes that are connected to
 // the "user_allowed_groups" edge. The optional arguments are used to configure the query builder of the edge.
 func (_q *UserQuery) WithUserAllowedGroups(opts ...func(*UserAllowedGroupQuery)) *UserQuery {
@@ -622,7 +660,7 @@ func (_q *UserQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*User, e
 	var (
 		nodes       = []*User{}
 		_spec       = _q.querySpec()
-		loadedTypes = [8]bool{
+		loadedTypes = [9]bool{
 			_q.withAPIKeys != nil,
 			_q.withRedeemCodes != nil,
 			_q.withSubscriptions != nil,
@@ -630,6 +668,7 @@ func (_q *UserQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*User, e
 			_q.withAllowedGroups != nil,
 			_q.withUsageLogs != nil,
 			_q.withAttributeValues != nil,
+			_q.withPromoCodeUsages != nil,
 			_q.withUserAllowedGroups != nil,
 		}
 	)
@@ -642,6 +681,9 @@ func (_q *UserQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*User, e
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -702,6 +744,13 @@ func (_q *UserQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*User, e
 			return nil, err
 		}
 	}
+	if query := _q.withPromoCodeUsages; query != nil {
+		if err := _q.loadPromoCodeUsages(ctx, query, nodes,
+			func(n *User) { n.Edges.PromoCodeUsages = []*PromoCodeUsage{} },
+			func(n *User, e *PromoCodeUsage) { n.Edges.PromoCodeUsages = append(n.Edges.PromoCodeUsages, e) }); err != nil {
+			return nil, err
+		}
+	}
 	if query := _q.withUserAllowedGroups; query != nil {
 		if err := _q.loadUserAllowedGroups(ctx, query, nodes,
 			func(n *User) { n.Edges.UserAllowedGroups = []*UserAllowedGroup{} },
@@ -959,6 +1008,36 @@ func (_q *UserQuery) loadAttributeValues(ctx context.Context, query *UserAttribu
 	}
 	return nil
 }
+func (_q *UserQuery) loadPromoCodeUsages(ctx context.Context, query *PromoCodeUsageQuery, nodes []*User, init func(*User), assign func(*User, *PromoCodeUsage)) error {
+	fks := make([]driver.Value, 0, len(nodes))
+	nodeids := make(map[int64]*User)
+	for i := range nodes {
+		fks = append(fks, nodes[i].ID)
+		nodeids[nodes[i].ID] = nodes[i]
+		if init != nil {
+			init(nodes[i])
+		}
+	}
+	if len(query.ctx.Fields) > 0 {
+		query.ctx.AppendFieldOnce(promocodeusage.FieldUserID)
+	}
+	query.Where(predicate.PromoCodeUsage(func(s *sql.Selector) {
+		s.Where(sql.InValues(s.C(user.PromoCodeUsagesColumn), fks...))
+	}))
+	neighbors, err := query.All(ctx)
+	if err != nil {
+		return err
+	}
+	for _, n := range neighbors {
+		fk := n.UserID
+		node, ok := nodeids[fk]
+		if !ok {
+			return fmt.Errorf(`unexpected referenced foreign-key "user_id" returned %v for node %v`, fk, n.ID)
+		}
+		assign(node, n)
+	}
+	return nil
+}
 func (_q *UserQuery) loadUserAllowedGroups(ctx context.Context, query *UserAllowedGroupQuery, nodes []*User, init func(*User), assign func(*User, *UserAllowedGroup)) error {
 	fks := make([]driver.Value, 0, len(nodes))
 	nodeids := make(map[int64]*User)
@@ -992,6 +1071,9 @@ func (_q *UserQuery) loadUserAllowedGroups(ctx context.Context, query *UserAllow
 
 func (_q *UserQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -1054,6 +1136,9 @@ func (_q *UserQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -1071,6 +1156,32 @@ func (_q *UserQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *UserQuery) ForUpdate(opts ...sql.LockOption) *UserQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *UserQuery) ForShare(opts ...sql.LockOption) *UserQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // UserGroupBy is the group-by builder for User entities.
 type UserGroupBy struct {
 	selector

backend/ent/user_update.go

@@ -14,6 +14,7 @@ import (
 	"github.com/Wei-Shaw/sub2api/ent/apikey"
 	"github.com/Wei-Shaw/sub2api/ent/group"
 	"github.com/Wei-Shaw/sub2api/ent/predicate"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
 	"github.com/Wei-Shaw/sub2api/ent/redeemcode"
 	"github.com/Wei-Shaw/sub2api/ent/usagelog"
 	"github.com/Wei-Shaw/sub2api/ent/user"
@@ -291,6 +292,21 @@ func (_u *UserUpdate) AddAttributeValues(v ...*UserAttributeValue) *UserUpdate {
 	return _u.AddAttributeValueIDs(ids...)
 }
 
+// AddPromoCodeUsageIDs adds the "promo_code_usages" edge to the PromoCodeUsage entity by IDs.
+func (_u *UserUpdate) AddPromoCodeUsageIDs(ids ...int64) *UserUpdate {
+	_u.mutation.AddPromoCodeUsageIDs(ids...)
+	return _u
+}
+
+// AddPromoCodeUsages adds the "promo_code_usages" edges to the PromoCodeUsage entity.
+func (_u *UserUpdate) AddPromoCodeUsages(v ...*PromoCodeUsage) *UserUpdate {
+	ids := make([]int64, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.AddPromoCodeUsageIDs(ids...)
+}
+
 // Mutation returns the UserMutation object of the builder.
 func (_u *UserUpdate) Mutation() *UserMutation {
 	return _u.mutation
@@ -443,6 +459,27 @@ func (_u *UserUpdate) RemoveAttributeValues(v ...*UserAttributeValue) *UserUpdat
 	return _u.RemoveAttributeValueIDs(ids...)
 }
 
+// ClearPromoCodeUsages clears all "promo_code_usages" edges to the PromoCodeUsage entity.
+func (_u *UserUpdate) ClearPromoCodeUsages() *UserUpdate {
+	_u.mutation.ClearPromoCodeUsages()
+	return _u
+}
+
+// RemovePromoCodeUsageIDs removes the "promo_code_usages" edge to PromoCodeUsage entities by IDs.
+func (_u *UserUpdate) RemovePromoCodeUsageIDs(ids ...int64) *UserUpdate {
+	_u.mutation.RemovePromoCodeUsageIDs(ids...)
+	return _u
+}
+
+// RemovePromoCodeUsages removes "promo_code_usages" edges to PromoCodeUsage entities.
+func (_u *UserUpdate) RemovePromoCodeUsages(v ...*PromoCodeUsage) *UserUpdate {
+	ids := make([]int64, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.RemovePromoCodeUsageIDs(ids...)
+}
+
 // Save executes the query and returns the number of nodes affected by the update operation.
 func (_u *UserUpdate) Save(ctx context.Context) (int, error) {
 	if err := _u.defaults(); err != nil {
@@ -893,6 +930,51 @@ func (_u *UserUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 		}
 		_spec.Edges.Add = append(_spec.Edges.Add, edge)
 	}
+	if _u.mutation.PromoCodeUsagesCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   user.PromoCodeUsagesTable,
+			Columns: []string{user.PromoCodeUsagesColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.RemovedPromoCodeUsagesIDs(); len(nodes) > 0 && !_u.mutation.PromoCodeUsagesCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   user.PromoCodeUsagesTable,
+			Columns: []string{user.PromoCodeUsagesColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.PromoCodeUsagesIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   user.PromoCodeUsagesTable,
+			Columns: []string{user.PromoCodeUsagesColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
 	if _node, err = sqlgraph.UpdateNodes(ctx, _u.driver, _spec); err != nil {
 		if _, ok := err.(*sqlgraph.NotFoundError); ok {
 			err = &NotFoundError{user.Label}
@@ -1170,6 +1252,21 @@ func (_u *UserUpdateOne) AddAttributeValues(v ...*UserAttributeValue) *UserUpdat
 	return _u.AddAttributeValueIDs(ids...)
 }
 
+// AddPromoCodeUsageIDs adds the "promo_code_usages" edge to the PromoCodeUsage entity by IDs.
+func (_u *UserUpdateOne) AddPromoCodeUsageIDs(ids ...int64) *UserUpdateOne {
+	_u.mutation.AddPromoCodeUsageIDs(ids...)
+	return _u
+}
+
+// AddPromoCodeUsages adds the "promo_code_usages" edges to the PromoCodeUsage entity.
+func (_u *UserUpdateOne) AddPromoCodeUsages(v ...*PromoCodeUsage) *UserUpdateOne {
+	ids := make([]int64, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.AddPromoCodeUsageIDs(ids...)
+}
+
 // Mutation returns the UserMutation object of the builder.
 func (_u *UserUpdateOne) Mutation() *UserMutation {
 	return _u.mutation
@@ -1322,6 +1419,27 @@ func (_u *UserUpdateOne) RemoveAttributeValues(v ...*UserAttributeValue) *UserUp
 	return _u.RemoveAttributeValueIDs(ids...)
 }
 
+// ClearPromoCodeUsages clears all "promo_code_usages" edges to the PromoCodeUsage entity.
+func (_u *UserUpdateOne) ClearPromoCodeUsages() *UserUpdateOne {
+	_u.mutation.ClearPromoCodeUsages()
+	return _u
+}
+
+// RemovePromoCodeUsageIDs removes the "promo_code_usages" edge to PromoCodeUsage entities by IDs.
+func (_u *UserUpdateOne) RemovePromoCodeUsageIDs(ids ...int64) *UserUpdateOne {
+	_u.mutation.RemovePromoCodeUsageIDs(ids...)
+	return _u
+}
+
+// RemovePromoCodeUsages removes "promo_code_usages" edges to PromoCodeUsage entities.
+func (_u *UserUpdateOne) RemovePromoCodeUsages(v ...*PromoCodeUsage) *UserUpdateOne {
+	ids := make([]int64, len(v))
+	for i := range v {
+		ids[i] = v[i].ID
+	}
+	return _u.RemovePromoCodeUsageIDs(ids...)
+}
+
 // Where appends a list predicates to the UserUpdate builder.
 func (_u *UserUpdateOne) Where(ps ...predicate.User) *UserUpdateOne {
 	_u.mutation.Where(ps...)
@@ -1802,6 +1920,51 @@ func (_u *UserUpdateOne) sqlSave(ctx context.Context) (_node *User, err error) {
 		}
 		_spec.Edges.Add = append(_spec.Edges.Add, edge)
 	}
+	if _u.mutation.PromoCodeUsagesCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   user.PromoCodeUsagesTable,
+			Columns: []string{user.PromoCodeUsagesColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.RemovedPromoCodeUsagesIDs(); len(nodes) > 0 && !_u.mutation.PromoCodeUsagesCleared() {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   user.PromoCodeUsagesTable,
+			Columns: []string{user.PromoCodeUsagesColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
+	}
+	if nodes := _u.mutation.PromoCodeUsagesIDs(); len(nodes) > 0 {
+		edge := &sqlgraph.EdgeSpec{
+			Rel:     sqlgraph.O2M,
+			Inverse: false,
+			Table:   user.PromoCodeUsagesTable,
+			Columns: []string{user.PromoCodeUsagesColumn},
+			Bidi:    false,
+			Target: &sqlgraph.EdgeTarget{
+				IDSpec: sqlgraph.NewFieldSpec(promocodeusage.FieldID, field.TypeInt64),
+			},
+		}
+		for _, k := range nodes {
+			edge.Target.Nodes = append(edge.Target.Nodes, k)
+		}
+		_spec.Edges.Add = append(_spec.Edges.Add, edge)
+	}
 	_node = &User{config: _u.config}
 	_spec.Assign = _node.assignValues
 	_spec.ScanValues = _node.scanValues

backend/ent/userallowedgroup_query.go

@@ -8,6 +8,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"github.com/Wei-Shaw/sub2api/ent/group"
@@ -25,6 +26,7 @@ type UserAllowedGroupQuery struct {
 	predicates []predicate.UserAllowedGroup
 	withUser   *UserQuery
 	withGroup  *GroupQuery
+	modifiers  []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -347,6 +349,9 @@ func (_q *UserAllowedGroupQuery) sqlAll(ctx context.Context, hooks ...queryHook)
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -432,6 +437,9 @@ func (_q *UserAllowedGroupQuery) loadGroup(ctx context.Context, query *GroupQuer
 
 func (_q *UserAllowedGroupQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Unique = false
 	_spec.Node.Columns = nil
 	return sqlgraph.CountNodes(ctx, _q.driver, _spec)
@@ -495,6 +503,9 @@ func (_q *UserAllowedGroupQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -512,6 +523,32 @@ func (_q *UserAllowedGroupQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *UserAllowedGroupQuery) ForUpdate(opts ...sql.LockOption) *UserAllowedGroupQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *UserAllowedGroupQuery) ForShare(opts ...sql.LockOption) *UserAllowedGroupQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // UserAllowedGroupGroupBy is the group-by builder for UserAllowedGroup entities.
 type UserAllowedGroupGroupBy struct {
 	selector

backend/ent/userattributedefinition_query.go

@@ -9,6 +9,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -25,6 +26,7 @@ type UserAttributeDefinitionQuery struct {
 	inters     []Interceptor
 	predicates []predicate.UserAttributeDefinition
 	withValues *UserAttributeValueQuery
+	modifiers  []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -384,6 +386,9 @@ func (_q *UserAttributeDefinitionQuery) sqlAll(ctx context.Context, hooks ...que
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -436,6 +441,9 @@ func (_q *UserAttributeDefinitionQuery) loadValues(ctx context.Context, query *U
 
 func (_q *UserAttributeDefinitionQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -498,6 +506,9 @@ func (_q *UserAttributeDefinitionQuery) sqlQuery(ctx context.Context) *sql.Selec
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -515,6 +526,32 @@ func (_q *UserAttributeDefinitionQuery) sqlQuery(ctx context.Context) *sql.Selec
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *UserAttributeDefinitionQuery) ForUpdate(opts ...sql.LockOption) *UserAttributeDefinitionQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *UserAttributeDefinitionQuery) ForShare(opts ...sql.LockOption) *UserAttributeDefinitionQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // UserAttributeDefinitionGroupBy is the group-by builder for UserAttributeDefinition entities.
 type UserAttributeDefinitionGroupBy struct {
 	selector

backend/ent/userattributevalue_query.go

@@ -8,6 +8,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -26,6 +27,7 @@ type UserAttributeValueQuery struct {
 	predicates     []predicate.UserAttributeValue
 	withUser       *UserQuery
 	withDefinition *UserAttributeDefinitionQuery
+	modifiers      []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -420,6 +422,9 @@ func (_q *UserAttributeValueQuery) sqlAll(ctx context.Context, hooks ...queryHoo
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -505,6 +510,9 @@ func (_q *UserAttributeValueQuery) loadDefinition(ctx context.Context, query *Us
 
 func (_q *UserAttributeValueQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -573,6 +581,9 @@ func (_q *UserAttributeValueQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -590,6 +601,32 @@ func (_q *UserAttributeValueQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *UserAttributeValueQuery) ForUpdate(opts ...sql.LockOption) *UserAttributeValueQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *UserAttributeValueQuery) ForShare(opts ...sql.LockOption) *UserAttributeValueQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // UserAttributeValueGroupBy is the group-by builder for UserAttributeValue entities.
 type UserAttributeValueGroupBy struct {
 	selector

backend/ent/usersubscription_query.go

@@ -9,6 +9,7 @@ import (
 	"math"
 
 	"entgo.io/ent"
+	"entgo.io/ent/dialect"
 	"entgo.io/ent/dialect/sql"
 	"entgo.io/ent/dialect/sql/sqlgraph"
 	"entgo.io/ent/schema/field"
@@ -30,6 +31,7 @@ type UserSubscriptionQuery struct {
 	withGroup          *GroupQuery
 	withAssignedByUser *UserQuery
 	withUsageLogs      *UsageLogQuery
+	modifiers          []func(*sql.Selector)
 	// intermediate query (i.e. traversal path).
 	sql  *sql.Selector
 	path func(context.Context) (*sql.Selector, error)
@@ -494,6 +496,9 @@ func (_q *UserSubscriptionQuery) sqlAll(ctx context.Context, hooks ...queryHook)
 		node.Edges.loadedTypes = loadedTypes
 		return node.assignValues(columns, values)
 	}
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	for i := range hooks {
 		hooks[i](ctx, _spec)
 	}
@@ -657,6 +662,9 @@ func (_q *UserSubscriptionQuery) loadUsageLogs(ctx context.Context, query *Usage
 
 func (_q *UserSubscriptionQuery) sqlCount(ctx context.Context) (int, error) {
 	_spec := _q.querySpec()
+	if len(_q.modifiers) > 0 {
+		_spec.Modifiers = _q.modifiers
+	}
 	_spec.Node.Columns = _q.ctx.Fields
 	if len(_q.ctx.Fields) > 0 {
 		_spec.Unique = _q.ctx.Unique != nil && *_q.ctx.Unique
@@ -728,6 +736,9 @@ func (_q *UserSubscriptionQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	if _q.ctx.Unique != nil && *_q.ctx.Unique {
 		selector.Distinct()
 	}
+	for _, m := range _q.modifiers {
+		m(selector)
+	}
 	for _, p := range _q.predicates {
 		p(selector)
 	}
@@ -745,6 +756,32 @@ func (_q *UserSubscriptionQuery) sqlQuery(ctx context.Context) *sql.Selector {
 	return selector
 }
 
+// ForUpdate locks the selected rows against concurrent updates, and prevent them from being
+// updated, deleted or "selected ... for update" by other sessions, until the transaction is
+// either committed or rolled-back.
+func (_q *UserSubscriptionQuery) ForUpdate(opts ...sql.LockOption) *UserSubscriptionQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForUpdate(opts...)
+	})
+	return _q
+}
+
+// ForShare behaves similarly to ForUpdate, except that it acquires a shared mode lock
+// on any rows that are read. Other sessions can read the rows, but cannot modify them
+// until your transaction commits.
+func (_q *UserSubscriptionQuery) ForShare(opts ...sql.LockOption) *UserSubscriptionQuery {
+	if _q.driver.Dialect() == dialect.Postgres {
+		_q.Unique(false)
+	}
+	_q.modifiers = append(_q.modifiers, func(s *sql.Selector) {
+		s.ForShare(opts...)
+	})
+	return _q
+}
+
 // UserSubscriptionGroupBy is the group-by builder for UserSubscription entities.
 type UserSubscriptionGroupBy struct {
 	selector

backend/internal/config/config.go

@@ -6,6 +6,7 @@ import (
 	"encoding/hex"
 	"fmt"
 	"log"
+	"net/url"
 	"os"
 	"strings"
 	"time"
@@ -35,24 +36,25 @@ const (
 )
 
 type Config struct {
-	Server       ServerConfig       `mapstructure:"server"`
+	Server       ServerConfig         `mapstructure:"server"`
-	CORS         CORSConfig         `mapstructure:"cors"`
+	CORS         CORSConfig           `mapstructure:"cors"`
-	Security     SecurityConfig     `mapstructure:"security"`
+	Security     SecurityConfig       `mapstructure:"security"`
-	Billing      BillingConfig      `mapstructure:"billing"`
+	Billing      BillingConfig        `mapstructure:"billing"`
-	Turnstile    TurnstileConfig    `mapstructure:"turnstile"`
+	Turnstile    TurnstileConfig      `mapstructure:"turnstile"`
-	Database     DatabaseConfig     `mapstructure:"database"`
+	Database     DatabaseConfig       `mapstructure:"database"`
-	Redis        RedisConfig        `mapstructure:"redis"`
+	Redis        RedisConfig          `mapstructure:"redis"`
-	JWT          JWTConfig          `mapstructure:"jwt"`
+	JWT          JWTConfig            `mapstructure:"jwt"`
-	Default      DefaultConfig      `mapstructure:"default"`
+	LinuxDo      LinuxDoConnectConfig `mapstructure:"linuxdo_connect"`
-	RateLimit    RateLimitConfig    `mapstructure:"rate_limit"`
+	Default      DefaultConfig        `mapstructure:"default"`
-	Pricing      PricingConfig      `mapstructure:"pricing"`
+	RateLimit    RateLimitConfig      `mapstructure:"rate_limit"`
-	Gateway      GatewayConfig      `mapstructure:"gateway"`
+	Pricing      PricingConfig        `mapstructure:"pricing"`
-	Concurrency  ConcurrencyConfig  `mapstructure:"concurrency"`
+	Gateway      GatewayConfig        `mapstructure:"gateway"`
-	TokenRefresh TokenRefreshConfig `mapstructure:"token_refresh"`
+	Concurrency  ConcurrencyConfig    `mapstructure:"concurrency"`
-	RunMode      string             `mapstructure:"run_mode" yaml:"run_mode"`
+	TokenRefresh TokenRefreshConfig   `mapstructure:"token_refresh"`
-	Timezone     string             `mapstructure:"timezone"` // e.g. "Asia/Shanghai", "UTC"
+	RunMode      string               `mapstructure:"run_mode" yaml:"run_mode"`
-	Gemini       GeminiConfig       `mapstructure:"gemini"`
+	Timezone     string               `mapstructure:"timezone"` // e.g. "Asia/Shanghai", "UTC"
-	Update       UpdateConfig       `mapstructure:"update"`
+	Gemini       GeminiConfig         `mapstructure:"gemini"`
+	Update       UpdateConfig         `mapstructure:"update"`
 }
 
 // UpdateConfig 在线更新相关配置
@@ -272,6 +274,13 @@ type DatabaseConfig struct {
 }
 
 func (d *DatabaseConfig) DSN() string {
+	// 当密码为空时不包含 password 参数，避免 libpq 解析错误
+	if d.Password == "" {
+		return fmt.Sprintf(
+			"host=%s port=%d user=%s dbname=%s sslmode=%s",
+			d.Host, d.Port, d.User, d.DBName, d.SSLMode,
+		)
+	}
 	return fmt.Sprintf(
 		"host=%s port=%d user=%s password=%s dbname=%s sslmode=%s",
 		d.Host, d.Port, d.User, d.Password, d.DBName, d.SSLMode,
@@ -283,6 +292,13 @@ func (d *DatabaseConfig) DSNWithTimezone(tz string) string {
 	if tz == "" {
 		tz = "Asia/Shanghai"
 	}
+	// 当密码为空时不包含 password 参数，避免 libpq 解析错误
+	if d.Password == "" {
+		return fmt.Sprintf(
+			"host=%s port=%d user=%s dbname=%s sslmode=%s TimeZone=%s",
+			d.Host, d.Port, d.User, d.DBName, d.SSLMode, tz,
+		)
+	}
 	return fmt.Sprintf(
 		"host=%s port=%d user=%s password=%s dbname=%s sslmode=%s TimeZone=%s",
 		d.Host, d.Port, d.User, d.Password, d.DBName, d.SSLMode, tz,
@@ -322,6 +338,30 @@ type TurnstileConfig struct {
 	Required bool `mapstructure:"required"`
 }
 
+// LinuxDoConnectConfig 用于 LinuxDo Connect OAuth 登录（终端用户 SSO）。
+//
+// 注意：这与上游账号的 OAuth（例如 OpenAI/Gemini 账号接入）不是一回事。
+// 这里是用于登录 Sub2API 本身的用户体系。
+type LinuxDoConnectConfig struct {
+	Enabled             bool   `mapstructure:"enabled"`
+	ClientID            string `mapstructure:"client_id"`
+	ClientSecret        string `mapstructure:"client_secret"`
+	AuthorizeURL        string `mapstructure:"authorize_url"`
+	TokenURL            string `mapstructure:"token_url"`
+	UserInfoURL         string `mapstructure:"userinfo_url"`
+	Scopes              string `mapstructure:"scopes"`
+	RedirectURL         string `mapstructure:"redirect_url"`          // 后端回调地址（需在提供方后台登记）
+	FrontendRedirectURL string `mapstructure:"frontend_redirect_url"` // 前端接收 token 的路由（默认：/auth/linuxdo/callback）
+	TokenAuthMethod     string `mapstructure:"token_auth_method"`     // client_secret_post / client_secret_basic / none
+	UsePKCE             bool   `mapstructure:"use_pkce"`
+
+	// 可选：用于从 userinfo JSON 中提取字段的 gjson 路径。
+	// 为空时，服务端会尝试一组常见字段名。
+	UserInfoEmailPath    string `mapstructure:"userinfo_email_path"`
+	UserInfoIDPath       string `mapstructure:"userinfo_id_path"`
+	UserInfoUsernamePath string `mapstructure:"userinfo_username_path"`
+}
+
 type DefaultConfig struct {
 	AdminEmail      string  `mapstructure:"admin_email"`
 	AdminPassword   string  `mapstructure:"admin_password"`
@@ -388,6 +428,18 @@ func Load() (*Config, error) {
 		cfg.Server.Mode = "debug"
 	}
 	cfg.JWT.Secret = strings.TrimSpace(cfg.JWT.Secret)
+	cfg.LinuxDo.ClientID = strings.TrimSpace(cfg.LinuxDo.ClientID)
+	cfg.LinuxDo.ClientSecret = strings.TrimSpace(cfg.LinuxDo.ClientSecret)
+	cfg.LinuxDo.AuthorizeURL = strings.TrimSpace(cfg.LinuxDo.AuthorizeURL)
+	cfg.LinuxDo.TokenURL = strings.TrimSpace(cfg.LinuxDo.TokenURL)
+	cfg.LinuxDo.UserInfoURL = strings.TrimSpace(cfg.LinuxDo.UserInfoURL)
+	cfg.LinuxDo.Scopes = strings.TrimSpace(cfg.LinuxDo.Scopes)
+	cfg.LinuxDo.RedirectURL = strings.TrimSpace(cfg.LinuxDo.RedirectURL)
+	cfg.LinuxDo.FrontendRedirectURL = strings.TrimSpace(cfg.LinuxDo.FrontendRedirectURL)
+	cfg.LinuxDo.TokenAuthMethod = strings.ToLower(strings.TrimSpace(cfg.LinuxDo.TokenAuthMethod))
+	cfg.LinuxDo.UserInfoEmailPath = strings.TrimSpace(cfg.LinuxDo.UserInfoEmailPath)
+	cfg.LinuxDo.UserInfoIDPath = strings.TrimSpace(cfg.LinuxDo.UserInfoIDPath)
+	cfg.LinuxDo.UserInfoUsernamePath = strings.TrimSpace(cfg.LinuxDo.UserInfoUsernamePath)
 	cfg.CORS.AllowedOrigins = normalizeStringSlice(cfg.CORS.AllowedOrigins)
 	cfg.Security.ResponseHeaders.AdditionalAllowed = normalizeStringSlice(cfg.Security.ResponseHeaders.AdditionalAllowed)
 	cfg.Security.ResponseHeaders.ForceRemove = normalizeStringSlice(cfg.Security.ResponseHeaders.ForceRemove)
@@ -426,6 +478,81 @@ func Load() (*Config, error) {
 	return &cfg, nil
 }
 
+// ValidateAbsoluteHTTPURL 校验一个绝对 http(s) URL（禁止 fragment）。
+func ValidateAbsoluteHTTPURL(raw string) error {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return fmt.Errorf("empty url")
+	}
+	u, err := url.Parse(raw)
+	if err != nil {
+		return err
+	}
+	if !u.IsAbs() {
+		return fmt.Errorf("must be absolute")
+	}
+	if !isHTTPScheme(u.Scheme) {
+		return fmt.Errorf("unsupported scheme: %s", u.Scheme)
+	}
+	if strings.TrimSpace(u.Host) == "" {
+		return fmt.Errorf("missing host")
+	}
+	if u.Fragment != "" {
+		return fmt.Errorf("must not include fragment")
+	}
+	return nil
+}
+
+// ValidateFrontendRedirectURL 校验前端回调地址：
+// - 允许同源相对路径（以 / 开头）
+// - 或绝对 http(s) URL（禁止 fragment）
+func ValidateFrontendRedirectURL(raw string) error {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return fmt.Errorf("empty url")
+	}
+	if strings.ContainsAny(raw, "\r\n") {
+		return fmt.Errorf("contains invalid characters")
+	}
+	if strings.HasPrefix(raw, "/") {
+		if strings.HasPrefix(raw, "//") {
+			return fmt.Errorf("must not start with //")
+		}
+		return nil
+	}
+	u, err := url.Parse(raw)
+	if err != nil {
+		return err
+	}
+	if !u.IsAbs() {
+		return fmt.Errorf("must be absolute http(s) url or relative path")
+	}
+	if !isHTTPScheme(u.Scheme) {
+		return fmt.Errorf("unsupported scheme: %s", u.Scheme)
+	}
+	if strings.TrimSpace(u.Host) == "" {
+		return fmt.Errorf("missing host")
+	}
+	if u.Fragment != "" {
+		return fmt.Errorf("must not include fragment")
+	}
+	return nil
+}
+
+func isHTTPScheme(scheme string) bool {
+	return strings.EqualFold(scheme, "http") || strings.EqualFold(scheme, "https")
+}
+
+func warnIfInsecureURL(field, raw string) {
+	u, err := url.Parse(strings.TrimSpace(raw))
+	if err != nil {
+		return
+	}
+	if strings.EqualFold(u.Scheme, "http") {
+		log.Printf("Warning: %s uses http scheme; use https in production to avoid token leakage.", field)
+	}
+}
+
 func setDefaults() {
 	viper.SetDefault("run_mode", RunModeStandard)
 
@@ -475,6 +602,22 @@ func setDefaults() {
 	// Turnstile
 	viper.SetDefault("turnstile.required", false)
 
+	// LinuxDo Connect OAuth 登录（终端用户 SSO）
+	viper.SetDefault("linuxdo_connect.enabled", false)
+	viper.SetDefault("linuxdo_connect.client_id", "")
+	viper.SetDefault("linuxdo_connect.client_secret", "")
+	viper.SetDefault("linuxdo_connect.authorize_url", "https://connect.linux.do/oauth2/authorize")
+	viper.SetDefault("linuxdo_connect.token_url", "https://connect.linux.do/oauth2/token")
+	viper.SetDefault("linuxdo_connect.userinfo_url", "https://connect.linux.do/api/user")
+	viper.SetDefault("linuxdo_connect.scopes", "user")
+	viper.SetDefault("linuxdo_connect.redirect_url", "")
+	viper.SetDefault("linuxdo_connect.frontend_redirect_url", "/auth/linuxdo/callback")
+	viper.SetDefault("linuxdo_connect.token_auth_method", "client_secret_post")
+	viper.SetDefault("linuxdo_connect.use_pkce", false)
+	viper.SetDefault("linuxdo_connect.userinfo_email_path", "")
+	viper.SetDefault("linuxdo_connect.userinfo_id_path", "")
+	viper.SetDefault("linuxdo_connect.userinfo_username_path", "")
+
 	// Database
 	viper.SetDefault("database.host", "localhost")
 	viper.SetDefault("database.port", 5432)
@@ -544,7 +687,7 @@ func setDefaults() {
 	viper.SetDefault("gateway.concurrency_slot_ttl_minutes", 30) // 并发槽位过期时间（支持超长请求）
 	viper.SetDefault("gateway.stream_data_interval_timeout", 180)
 	viper.SetDefault("gateway.stream_keepalive_interval", 10)
-	viper.SetDefault("gateway.max_line_size", 10*1024*1024)
+	viper.SetDefault("gateway.max_line_size", 40*1024*1024)
 	viper.SetDefault("gateway.scheduling.sticky_session_max_waiting", 3)
 	viper.SetDefault("gateway.scheduling.sticky_session_wait_timeout", 45*time.Second)
 	viper.SetDefault("gateway.scheduling.fallback_wait_timeout", 30*time.Second)
@@ -586,6 +729,60 @@ func (c *Config) Validate() error {
 	if c.Security.CSP.Enabled && strings.TrimSpace(c.Security.CSP.Policy) == "" {
 		return fmt.Errorf("security.csp.policy is required when CSP is enabled")
 	}
+	if c.LinuxDo.Enabled {
+		if strings.TrimSpace(c.LinuxDo.ClientID) == "" {
+			return fmt.Errorf("linuxdo_connect.client_id is required when linuxdo_connect.enabled=true")
+		}
+		if strings.TrimSpace(c.LinuxDo.AuthorizeURL) == "" {
+			return fmt.Errorf("linuxdo_connect.authorize_url is required when linuxdo_connect.enabled=true")
+		}
+		if strings.TrimSpace(c.LinuxDo.TokenURL) == "" {
+			return fmt.Errorf("linuxdo_connect.token_url is required when linuxdo_connect.enabled=true")
+		}
+		if strings.TrimSpace(c.LinuxDo.UserInfoURL) == "" {
+			return fmt.Errorf("linuxdo_connect.userinfo_url is required when linuxdo_connect.enabled=true")
+		}
+		if strings.TrimSpace(c.LinuxDo.RedirectURL) == "" {
+			return fmt.Errorf("linuxdo_connect.redirect_url is required when linuxdo_connect.enabled=true")
+		}
+		method := strings.ToLower(strings.TrimSpace(c.LinuxDo.TokenAuthMethod))
+		switch method {
+		case "", "client_secret_post", "client_secret_basic", "none":
+		default:
+			return fmt.Errorf("linuxdo_connect.token_auth_method must be one of: client_secret_post/client_secret_basic/none")
+		}
+		if method == "none" && !c.LinuxDo.UsePKCE {
+			return fmt.Errorf("linuxdo_connect.use_pkce must be true when linuxdo_connect.token_auth_method=none")
+		}
+		if (method == "" || method == "client_secret_post" || method == "client_secret_basic") && strings.TrimSpace(c.LinuxDo.ClientSecret) == "" {
+			return fmt.Errorf("linuxdo_connect.client_secret is required when linuxdo_connect.enabled=true and token_auth_method is client_secret_post/client_secret_basic")
+		}
+		if strings.TrimSpace(c.LinuxDo.FrontendRedirectURL) == "" {
+			return fmt.Errorf("linuxdo_connect.frontend_redirect_url is required when linuxdo_connect.enabled=true")
+		}
+
+		if err := ValidateAbsoluteHTTPURL(c.LinuxDo.AuthorizeURL); err != nil {
+			return fmt.Errorf("linuxdo_connect.authorize_url invalid: %w", err)
+		}
+		if err := ValidateAbsoluteHTTPURL(c.LinuxDo.TokenURL); err != nil {
+			return fmt.Errorf("linuxdo_connect.token_url invalid: %w", err)
+		}
+		if err := ValidateAbsoluteHTTPURL(c.LinuxDo.UserInfoURL); err != nil {
+			return fmt.Errorf("linuxdo_connect.userinfo_url invalid: %w", err)
+		}
+		if err := ValidateAbsoluteHTTPURL(c.LinuxDo.RedirectURL); err != nil {
+			return fmt.Errorf("linuxdo_connect.redirect_url invalid: %w", err)
+		}
+		if err := ValidateFrontendRedirectURL(c.LinuxDo.FrontendRedirectURL); err != nil {
+			return fmt.Errorf("linuxdo_connect.frontend_redirect_url invalid: %w", err)
+		}
+
+		warnIfInsecureURL("linuxdo_connect.authorize_url", c.LinuxDo.AuthorizeURL)
+		warnIfInsecureURL("linuxdo_connect.token_url", c.LinuxDo.TokenURL)
+		warnIfInsecureURL("linuxdo_connect.userinfo_url", c.LinuxDo.UserInfoURL)
+		warnIfInsecureURL("linuxdo_connect.redirect_url", c.LinuxDo.RedirectURL)
+		warnIfInsecureURL("linuxdo_connect.frontend_redirect_url", c.LinuxDo.FrontendRedirectURL)
+	}
 	if c.Billing.CircuitBreaker.Enabled {
 		if c.Billing.CircuitBreaker.FailureThreshold <= 0 {
 			return fmt.Errorf("billing.circuit_breaker.failure_threshold must be positive")

backend/internal/config/config_test.go

@@ -1,6 +1,7 @@
 package config
 
 import (
+	"strings"
 	"testing"
 	"time"
 
@@ -90,3 +91,53 @@ func TestLoadDefaultSecurityToggles(t *testing.T) {
 		t.Fatalf("ResponseHeaders.Enabled = true, want false")
 	}
 }
+
+func TestValidateLinuxDoFrontendRedirectURL(t *testing.T) {
+	viper.Reset()
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error: %v", err)
+	}
+
+	cfg.LinuxDo.Enabled = true
+	cfg.LinuxDo.ClientID = "test-client"
+	cfg.LinuxDo.ClientSecret = "test-secret"
+	cfg.LinuxDo.RedirectURL = "https://example.com/api/v1/auth/oauth/linuxdo/callback"
+	cfg.LinuxDo.TokenAuthMethod = "client_secret_post"
+	cfg.LinuxDo.UsePKCE = false
+
+	cfg.LinuxDo.FrontendRedirectURL = "javascript:alert(1)"
+	err = cfg.Validate()
+	if err == nil {
+		t.Fatalf("Validate() expected error for javascript scheme, got nil")
+	}
+	if !strings.Contains(err.Error(), "linuxdo_connect.frontend_redirect_url") {
+		t.Fatalf("Validate() expected frontend_redirect_url error, got: %v", err)
+	}
+}
+
+func TestValidateLinuxDoPKCERequiredForPublicClient(t *testing.T) {
+	viper.Reset()
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error: %v", err)
+	}
+
+	cfg.LinuxDo.Enabled = true
+	cfg.LinuxDo.ClientID = "test-client"
+	cfg.LinuxDo.ClientSecret = ""
+	cfg.LinuxDo.RedirectURL = "https://example.com/api/v1/auth/oauth/linuxdo/callback"
+	cfg.LinuxDo.FrontendRedirectURL = "/auth/linuxdo/callback"
+	cfg.LinuxDo.TokenAuthMethod = "none"
+	cfg.LinuxDo.UsePKCE = false
+
+	err = cfg.Validate()
+	if err == nil {
+		t.Fatalf("Validate() expected error when token_auth_method=none and use_pkce=false, got nil")
+	}
+	if !strings.Contains(err.Error(), "linuxdo_connect.use_pkce") {
+		t.Fatalf("Validate() expected use_pkce error, got: %v", err)
+	}
+}

backend/internal/handler/admin/account_handler.go

@@ -116,6 +116,7 @@ type BulkUpdateAccountsRequest struct {
 	Concurrency             *int           `json:"concurrency"`
 	Priority                *int           `json:"priority"`
 	Status                  string         `json:"status" binding:"omitempty,oneof=active inactive error"`
+	Schedulable             *bool          `json:"schedulable"`
 	GroupIDs                *[]int64       `json:"group_ids"`
 	Credentials             map[string]any `json:"credentials"`
 	Extra                   map[string]any `json:"extra"`
@@ -136,6 +137,11 @@ func (h *AccountHandler) List(c *gin.Context) {
 	accountType := c.Query("type")
 	status := c.Query("status")
 	search := c.Query("search")
+	// 标准化和验证 search 参数
+	search = strings.TrimSpace(search)
+	if len(search) > 100 {
+		search = search[:100]
+	}
 
 	accounts, total, err := h.adminService.ListAccounts(c.Request.Context(), page, pageSize, platform, accountType, status, search)
 	if err != nil {
@@ -655,6 +661,7 @@ func (h *AccountHandler) BulkUpdate(c *gin.Context) {
 		req.Concurrency != nil ||
 		req.Priority != nil ||
 		req.Status != "" ||
+		req.Schedulable != nil ||
 		req.GroupIDs != nil ||
 		len(req.Credentials) > 0 ||
 		len(req.Extra) > 0
@@ -671,6 +678,7 @@ func (h *AccountHandler) BulkUpdate(c *gin.Context) {
 		Concurrency:           req.Concurrency,
 		Priority:              req.Priority,
 		Status:                req.Status,
+		Schedulable:           req.Schedulable,
 		GroupIDs:              req.GroupIDs,
 		Credentials:           req.Credentials,
 		Extra:                 req.Extra,

backend/internal/handler/admin/group_handler.go

@@ -2,6 +2,7 @@ package admin
 
 import (
 	"strconv"
+	"strings"
 
 	"github.com/Wei-Shaw/sub2api/internal/handler/dto"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
@@ -67,6 +68,12 @@ func (h *GroupHandler) List(c *gin.Context) {
 	page, pageSize := response.ParsePagination(c)
 	platform := c.Query("platform")
 	status := c.Query("status")
+	search := c.Query("search")
+	// 标准化和验证 search 参数
+	search = strings.TrimSpace(search)
+	if len(search) > 100 {
+		search = search[:100]
+	}
 	isExclusiveStr := c.Query("is_exclusive")
 
 	var isExclusive *bool
@@ -75,7 +82,7 @@ func (h *GroupHandler) List(c *gin.Context) {
 		isExclusive = &val
 	}
 
-	groups, total, err := h.adminService.ListGroups(c.Request.Context(), page, pageSize, platform, status, isExclusive)
+	groups, total, err := h.adminService.ListGroups(c.Request.Context(), page, pageSize, platform, status, search, isExclusive)
 	if err != nil {
 		response.ErrorFrom(c, err)
 		return

backend/internal/handler/admin/promo_handler.go

@@ -0,0 +1,209 @@
+package admin
+
+import (
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/handler/dto"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+// PromoHandler handles admin promo code management
+type PromoHandler struct {
+	promoService *service.PromoService
+}
+
+// NewPromoHandler creates a new admin promo handler
+func NewPromoHandler(promoService *service.PromoService) *PromoHandler {
+	return &PromoHandler{
+		promoService: promoService,
+	}
+}
+
+// CreatePromoCodeRequest represents create promo code request
+type CreatePromoCodeRequest struct {
+	Code        string  `json:"code"`                                  // 可选，为空则自动生成
+	BonusAmount float64 `json:"bonus_amount" binding:"required,min=0"` // 赠送余额
+	MaxUses     int     `json:"max_uses" binding:"min=0"`              // 最大使用次数，0=无限
+	ExpiresAt   *int64  `json:"expires_at"`                            // 过期时间戳（秒）
+	Notes       string  `json:"notes"`                                 // 备注
+}
+
+// UpdatePromoCodeRequest represents update promo code request
+type UpdatePromoCodeRequest struct {
+	Code        *string  `json:"code"`
+	BonusAmount *float64 `json:"bonus_amount" binding:"omitempty,min=0"`
+	MaxUses     *int     `json:"max_uses" binding:"omitempty,min=0"`
+	Status      *string  `json:"status" binding:"omitempty,oneof=active disabled"`
+	ExpiresAt   *int64   `json:"expires_at"`
+	Notes       *string  `json:"notes"`
+}
+
+// List handles listing all promo codes with pagination
+// GET /api/v1/admin/promo-codes
+func (h *PromoHandler) List(c *gin.Context) {
+	page, pageSize := response.ParsePagination(c)
+	status := c.Query("status")
+	search := strings.TrimSpace(c.Query("search"))
+	if len(search) > 100 {
+		search = search[:100]
+	}
+
+	params := pagination.PaginationParams{
+		Page:     page,
+		PageSize: pageSize,
+	}
+
+	codes, paginationResult, err := h.promoService.List(c.Request.Context(), params, status, search)
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	out := make([]dto.PromoCode, 0, len(codes))
+	for i := range codes {
+		out = append(out, *dto.PromoCodeFromService(&codes[i]))
+	}
+	response.Paginated(c, out, paginationResult.Total, page, pageSize)
+}
+
+// GetByID handles getting a promo code by ID
+// GET /api/v1/admin/promo-codes/:id
+func (h *PromoHandler) GetByID(c *gin.Context) {
+	codeID, err := strconv.ParseInt(c.Param("id"), 10, 64)
+	if err != nil {
+		response.BadRequest(c, "Invalid promo code ID")
+		return
+	}
+
+	code, err := h.promoService.GetByID(c.Request.Context(), codeID)
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	response.Success(c, dto.PromoCodeFromService(code))
+}
+
+// Create handles creating a new promo code
+// POST /api/v1/admin/promo-codes
+func (h *PromoHandler) Create(c *gin.Context) {
+	var req CreatePromoCodeRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "Invalid request: "+err.Error())
+		return
+	}
+
+	input := &service.CreatePromoCodeInput{
+		Code:        req.Code,
+		BonusAmount: req.BonusAmount,
+		MaxUses:     req.MaxUses,
+		Notes:       req.Notes,
+	}
+
+	if req.ExpiresAt != nil {
+		t := time.Unix(*req.ExpiresAt, 0)
+		input.ExpiresAt = &t
+	}
+
+	code, err := h.promoService.Create(c.Request.Context(), input)
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	response.Success(c, dto.PromoCodeFromService(code))
+}
+
+// Update handles updating a promo code
+// PUT /api/v1/admin/promo-codes/:id
+func (h *PromoHandler) Update(c *gin.Context) {
+	codeID, err := strconv.ParseInt(c.Param("id"), 10, 64)
+	if err != nil {
+		response.BadRequest(c, "Invalid promo code ID")
+		return
+	}
+
+	var req UpdatePromoCodeRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "Invalid request: "+err.Error())
+		return
+	}
+
+	input := &service.UpdatePromoCodeInput{
+		Code:        req.Code,
+		BonusAmount: req.BonusAmount,
+		MaxUses:     req.MaxUses,
+		Status:      req.Status,
+		Notes:       req.Notes,
+	}
+
+	if req.ExpiresAt != nil {
+		if *req.ExpiresAt == 0 {
+			// 0 表示清除过期时间
+			input.ExpiresAt = nil
+		} else {
+			t := time.Unix(*req.ExpiresAt, 0)
+			input.ExpiresAt = &t
+		}
+	}
+
+	code, err := h.promoService.Update(c.Request.Context(), codeID, input)
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	response.Success(c, dto.PromoCodeFromService(code))
+}
+
+// Delete handles deleting a promo code
+// DELETE /api/v1/admin/promo-codes/:id
+func (h *PromoHandler) Delete(c *gin.Context) {
+	codeID, err := strconv.ParseInt(c.Param("id"), 10, 64)
+	if err != nil {
+		response.BadRequest(c, "Invalid promo code ID")
+		return
+	}
+
+	err = h.promoService.Delete(c.Request.Context(), codeID)
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	response.Success(c, gin.H{"message": "Promo code deleted successfully"})
+}
+
+// GetUsages handles getting usage records for a promo code
+// GET /api/v1/admin/promo-codes/:id/usages
+func (h *PromoHandler) GetUsages(c *gin.Context) {
+	codeID, err := strconv.ParseInt(c.Param("id"), 10, 64)
+	if err != nil {
+		response.BadRequest(c, "Invalid promo code ID")
+		return
+	}
+
+	page, pageSize := response.ParsePagination(c)
+	params := pagination.PaginationParams{
+		Page:     page,
+		PageSize: pageSize,
+	}
+
+	usages, paginationResult, err := h.promoService.ListUsages(c.Request.Context(), codeID, params)
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	out := make([]dto.PromoCodeUsage, 0, len(usages))
+	for i := range usages {
+		out = append(out, *dto.PromoCodeUsageFromService(&usages[i]))
+	}
+	response.Paginated(c, out, paginationResult.Total, page, pageSize)
+}

backend/internal/handler/admin/proxy_handler.go

@@ -51,6 +51,11 @@ func (h *ProxyHandler) List(c *gin.Context) {
 	protocol := c.Query("protocol")
 	status := c.Query("status")
 	search := c.Query("search")
+	// 标准化和验证 search 参数
+	search = strings.TrimSpace(search)
+	if len(search) > 100 {
+		search = search[:100]
+	}
 
 	proxies, total, err := h.adminService.ListProxiesWithAccountCount(c.Request.Context(), page, pageSize, protocol, status, search)
 	if err != nil {

backend/internal/handler/admin/redeem_handler.go

@@ -5,6 +5,7 @@ import (
 	"encoding/csv"
 	"fmt"
 	"strconv"
+	"strings"
 
 	"github.com/Wei-Shaw/sub2api/internal/handler/dto"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
@@ -41,6 +42,11 @@ func (h *RedeemHandler) List(c *gin.Context) {
 	codeType := c.Query("type")
 	status := c.Query("status")
 	search := c.Query("search")
+	// 标准化和验证 search 参数
+	search = strings.TrimSpace(search)
+	if len(search) > 100 {
+		search = search[:100]
+	}
 
 	codes, total, err := h.adminService.ListRedeemCodes(c.Request.Context(), page, pageSize, codeType, status, search)
 	if err != nil {

backend/internal/handler/admin/setting_handler.go

@@ -2,8 +2,10 @@ package admin
 
 import (
 	"log"
+	"strings"
 	"time"
 
+	"github.com/Wei-Shaw/sub2api/internal/config"
 	"github.com/Wei-Shaw/sub2api/internal/handler/dto"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
 	"github.com/Wei-Shaw/sub2api/internal/server/middleware"
@@ -38,33 +40,38 @@ func (h *SettingHandler) GetSettings(c *gin.Context) {
 	}
 
 	response.Success(c, dto.SystemSettings{
-		RegistrationEnabled:          settings.RegistrationEnabled,
+		RegistrationEnabled:                  settings.RegistrationEnabled,
-		EmailVerifyEnabled:           settings.EmailVerifyEnabled,
+		EmailVerifyEnabled:                   settings.EmailVerifyEnabled,
-		SMTPHost:                     settings.SMTPHost,
+		SMTPHost:                             settings.SMTPHost,
-		SMTPPort:                     settings.SMTPPort,
+		SMTPPort:                             settings.SMTPPort,
-		SMTPUsername:                 settings.SMTPUsername,
+		SMTPUsername:                         settings.SMTPUsername,
-		SMTPPasswordConfigured:       settings.SMTPPasswordConfigured,
+		SMTPPasswordConfigured:               settings.SMTPPasswordConfigured,
-		SMTPFrom:                     settings.SMTPFrom,
+		SMTPFrom:                             settings.SMTPFrom,
-		SMTPFromName:                 settings.SMTPFromName,
+		SMTPFromName:                         settings.SMTPFromName,
-		SMTPUseTLS:                   settings.SMTPUseTLS,
+		SMTPUseTLS:                           settings.SMTPUseTLS,
-		TurnstileEnabled:             settings.TurnstileEnabled,
+		TurnstileEnabled:                     settings.TurnstileEnabled,
-		TurnstileSiteKey:             settings.TurnstileSiteKey,
+		TurnstileSiteKey:                     settings.TurnstileSiteKey,
-		TurnstileSecretKeyConfigured: settings.TurnstileSecretKeyConfigured,
+		TurnstileSecretKeyConfigured:         settings.TurnstileSecretKeyConfigured,
-		SiteName:                     settings.SiteName,
+		LinuxDoConnectEnabled:                settings.LinuxDoConnectEnabled,
-		SiteLogo:                     settings.SiteLogo,
+		LinuxDoConnectClientID:               settings.LinuxDoConnectClientID,
-		SiteSubtitle:                 settings.SiteSubtitle,
+		LinuxDoConnectClientSecretConfigured: settings.LinuxDoConnectClientSecretConfigured,
-		APIBaseURL:                   settings.APIBaseURL,
+		LinuxDoConnectRedirectURL:            settings.LinuxDoConnectRedirectURL,
-		ContactInfo:                  settings.ContactInfo,
+		SiteName:                             settings.SiteName,
-		DocURL:                       settings.DocURL,
+		SiteLogo:                             settings.SiteLogo,
-		DefaultConcurrency:           settings.DefaultConcurrency,
+		SiteSubtitle:                         settings.SiteSubtitle,
-		DefaultBalance:               settings.DefaultBalance,
+		APIBaseURL:                           settings.APIBaseURL,
-		EnableModelFallback:          settings.EnableModelFallback,
+		ContactInfo:                          settings.ContactInfo,
-		FallbackModelAnthropic:       settings.FallbackModelAnthropic,
+		DocURL:                               settings.DocURL,
-		FallbackModelOpenAI:          settings.FallbackModelOpenAI,
+		HomeContent:                          settings.HomeContent,
-		FallbackModelGemini:          settings.FallbackModelGemini,
+		DefaultConcurrency:                   settings.DefaultConcurrency,
-		FallbackModelAntigravity:     settings.FallbackModelAntigravity,
+		DefaultBalance:                       settings.DefaultBalance,
-		EnableIdentityPatch:          settings.EnableIdentityPatch,
+		EnableModelFallback:                  settings.EnableModelFallback,
-		IdentityPatchPrompt:          settings.IdentityPatchPrompt,
+		FallbackModelAnthropic:               settings.FallbackModelAnthropic,
+		FallbackModelOpenAI:                  settings.FallbackModelOpenAI,
+		FallbackModelGemini:                  settings.FallbackModelGemini,
+		FallbackModelAntigravity:             settings.FallbackModelAntigravity,
+		EnableIdentityPatch:                  settings.EnableIdentityPatch,
+		IdentityPatchPrompt:                  settings.IdentityPatchPrompt,
 	})
 }
 
@@ -88,6 +95,12 @@ type UpdateSettingsRequest struct {
 	TurnstileSiteKey   string `json:"turnstile_site_key"`
 	TurnstileSecretKey string `json:"turnstile_secret_key"`
 
+	// LinuxDo Connect OAuth 登录（终端用户 SSO）
+	LinuxDoConnectEnabled      bool   `json:"linuxdo_connect_enabled"`
+	LinuxDoConnectClientID     string `json:"linuxdo_connect_client_id"`
+	LinuxDoConnectClientSecret string `json:"linuxdo_connect_client_secret"`
+	LinuxDoConnectRedirectURL  string `json:"linuxdo_connect_redirect_url"`
+
 	// OEM设置
 	SiteName     string `json:"site_name"`
 	SiteLogo     string `json:"site_logo"`
@@ -95,6 +108,7 @@ type UpdateSettingsRequest struct {
 	APIBaseURL   string `json:"api_base_url"`
 	ContactInfo  string `json:"contact_info"`
 	DocURL       string `json:"doc_url"`
+	HomeContent  string `json:"home_content"`
 
 	// 默认配置
 	DefaultConcurrency int     `json:"default_concurrency"`
@@ -165,34 +179,68 @@ func (h *SettingHandler) UpdateSettings(c *gin.Context) {
 		}
 	}
 
+	// LinuxDo Connect 参数验证
+	if req.LinuxDoConnectEnabled {
+		req.LinuxDoConnectClientID = strings.TrimSpace(req.LinuxDoConnectClientID)
+		req.LinuxDoConnectClientSecret = strings.TrimSpace(req.LinuxDoConnectClientSecret)
+		req.LinuxDoConnectRedirectURL = strings.TrimSpace(req.LinuxDoConnectRedirectURL)
+
+		if req.LinuxDoConnectClientID == "" {
+			response.BadRequest(c, "LinuxDo Client ID is required when enabled")
+			return
+		}
+		if req.LinuxDoConnectRedirectURL == "" {
+			response.BadRequest(c, "LinuxDo Redirect URL is required when enabled")
+			return
+		}
+		if err := config.ValidateAbsoluteHTTPURL(req.LinuxDoConnectRedirectURL); err != nil {
+			response.BadRequest(c, "LinuxDo Redirect URL must be an absolute http(s) URL")
+			return
+		}
+
+		// 如果未提供 client_secret，则保留现有值（如有）。
+		if req.LinuxDoConnectClientSecret == "" {
+			if previousSettings.LinuxDoConnectClientSecret == "" {
+				response.BadRequest(c, "LinuxDo Client Secret is required when enabled")
+				return
+			}
+			req.LinuxDoConnectClientSecret = previousSettings.LinuxDoConnectClientSecret
+		}
+	}
+
 	settings := &service.SystemSettings{
-		RegistrationEnabled:      req.RegistrationEnabled,
+		RegistrationEnabled:        req.RegistrationEnabled,
-		EmailVerifyEnabled:       req.EmailVerifyEnabled,
+		EmailVerifyEnabled:         req.EmailVerifyEnabled,
-		SMTPHost:                 req.SMTPHost,
+		SMTPHost:                   req.SMTPHost,
-		SMTPPort:                 req.SMTPPort,
+		SMTPPort:                   req.SMTPPort,
-		SMTPUsername:             req.SMTPUsername,
+		SMTPUsername:               req.SMTPUsername,
-		SMTPPassword:             req.SMTPPassword,
+		SMTPPassword:               req.SMTPPassword,
-		SMTPFrom:                 req.SMTPFrom,
+		SMTPFrom:                   req.SMTPFrom,
-		SMTPFromName:             req.SMTPFromName,
+		SMTPFromName:               req.SMTPFromName,
-		SMTPUseTLS:               req.SMTPUseTLS,
+		SMTPUseTLS:                 req.SMTPUseTLS,
-		TurnstileEnabled:         req.TurnstileEnabled,
+		TurnstileEnabled:           req.TurnstileEnabled,
-		TurnstileSiteKey:         req.TurnstileSiteKey,
+		TurnstileSiteKey:           req.TurnstileSiteKey,
-		TurnstileSecretKey:       req.TurnstileSecretKey,
+		TurnstileSecretKey:         req.TurnstileSecretKey,
-		SiteName:                 req.SiteName,
+		LinuxDoConnectEnabled:      req.LinuxDoConnectEnabled,
-		SiteLogo:                 req.SiteLogo,
+		LinuxDoConnectClientID:     req.LinuxDoConnectClientID,
-		SiteSubtitle:             req.SiteSubtitle,
+		LinuxDoConnectClientSecret: req.LinuxDoConnectClientSecret,
-		APIBaseURL:               req.APIBaseURL,
+		LinuxDoConnectRedirectURL:  req.LinuxDoConnectRedirectURL,
-		ContactInfo:              req.ContactInfo,
+		SiteName:                   req.SiteName,
-		DocURL:                   req.DocURL,
+		SiteLogo:                   req.SiteLogo,
-		DefaultConcurrency:       req.DefaultConcurrency,
+		SiteSubtitle:               req.SiteSubtitle,
-		DefaultBalance:           req.DefaultBalance,
+		APIBaseURL:                 req.APIBaseURL,
-		EnableModelFallback:      req.EnableModelFallback,
+		ContactInfo:                req.ContactInfo,
-		FallbackModelAnthropic:   req.FallbackModelAnthropic,
+		DocURL:                     req.DocURL,
-		FallbackModelOpenAI:      req.FallbackModelOpenAI,
+		HomeContent:                req.HomeContent,
-		FallbackModelGemini:      req.FallbackModelGemini,
+		DefaultConcurrency:         req.DefaultConcurrency,
-		FallbackModelAntigravity: req.FallbackModelAntigravity,
+		DefaultBalance:             req.DefaultBalance,
-		EnableIdentityPatch:      req.EnableIdentityPatch,
+		EnableModelFallback:        req.EnableModelFallback,
-		IdentityPatchPrompt:      req.IdentityPatchPrompt,
+		FallbackModelAnthropic:     req.FallbackModelAnthropic,
+		FallbackModelOpenAI:        req.FallbackModelOpenAI,
+		FallbackModelGemini:        req.FallbackModelGemini,
+		FallbackModelAntigravity:   req.FallbackModelAntigravity,
+		EnableIdentityPatch:        req.EnableIdentityPatch,
+		IdentityPatchPrompt:        req.IdentityPatchPrompt,
 	}
 
 	if err := h.settingService.UpdateSettings(c.Request.Context(), settings); err != nil {
@@ -210,33 +258,38 @@ func (h *SettingHandler) UpdateSettings(c *gin.Context) {
 	}
 
 	response.Success(c, dto.SystemSettings{
-		RegistrationEnabled:          updatedSettings.RegistrationEnabled,
+		RegistrationEnabled:                  updatedSettings.RegistrationEnabled,
-		EmailVerifyEnabled:           updatedSettings.EmailVerifyEnabled,
+		EmailVerifyEnabled:                   updatedSettings.EmailVerifyEnabled,
-		SMTPHost:                     updatedSettings.SMTPHost,
+		SMTPHost:                             updatedSettings.SMTPHost,
-		SMTPPort:                     updatedSettings.SMTPPort,
+		SMTPPort:                             updatedSettings.SMTPPort,
-		SMTPUsername:                 updatedSettings.SMTPUsername,
+		SMTPUsername:                         updatedSettings.SMTPUsername,
-		SMTPPasswordConfigured:       updatedSettings.SMTPPasswordConfigured,
+		SMTPPasswordConfigured:               updatedSettings.SMTPPasswordConfigured,
-		SMTPFrom:                     updatedSettings.SMTPFrom,
+		SMTPFrom:                             updatedSettings.SMTPFrom,
-		SMTPFromName:                 updatedSettings.SMTPFromName,
+		SMTPFromName:                         updatedSettings.SMTPFromName,
-		SMTPUseTLS:                   updatedSettings.SMTPUseTLS,
+		SMTPUseTLS:                           updatedSettings.SMTPUseTLS,
-		TurnstileEnabled:             updatedSettings.TurnstileEnabled,
+		TurnstileEnabled:                     updatedSettings.TurnstileEnabled,
-		TurnstileSiteKey:             updatedSettings.TurnstileSiteKey,
+		TurnstileSiteKey:                     updatedSettings.TurnstileSiteKey,
-		TurnstileSecretKeyConfigured: updatedSettings.TurnstileSecretKeyConfigured,
+		TurnstileSecretKeyConfigured:         updatedSettings.TurnstileSecretKeyConfigured,
-		SiteName:                     updatedSettings.SiteName,
+		LinuxDoConnectEnabled:                updatedSettings.LinuxDoConnectEnabled,
-		SiteLogo:                     updatedSettings.SiteLogo,
+		LinuxDoConnectClientID:               updatedSettings.LinuxDoConnectClientID,
-		SiteSubtitle:                 updatedSettings.SiteSubtitle,
+		LinuxDoConnectClientSecretConfigured: updatedSettings.LinuxDoConnectClientSecretConfigured,
-		APIBaseURL:                   updatedSettings.APIBaseURL,
+		LinuxDoConnectRedirectURL:            updatedSettings.LinuxDoConnectRedirectURL,
-		ContactInfo:                  updatedSettings.ContactInfo,
+		SiteName:                             updatedSettings.SiteName,
-		DocURL:                       updatedSettings.DocURL,
+		SiteLogo:                             updatedSettings.SiteLogo,
-		DefaultConcurrency:           updatedSettings.DefaultConcurrency,
+		SiteSubtitle:                         updatedSettings.SiteSubtitle,
-		DefaultBalance:               updatedSettings.DefaultBalance,
+		APIBaseURL:                           updatedSettings.APIBaseURL,
-		EnableModelFallback:          updatedSettings.EnableModelFallback,
+		ContactInfo:                          updatedSettings.ContactInfo,
-		FallbackModelAnthropic:       updatedSettings.FallbackModelAnthropic,
+		DocURL:                               updatedSettings.DocURL,
-		FallbackModelOpenAI:          updatedSettings.FallbackModelOpenAI,
+		HomeContent:                          updatedSettings.HomeContent,
-		FallbackModelGemini:          updatedSettings.FallbackModelGemini,
+		DefaultConcurrency:                   updatedSettings.DefaultConcurrency,
-		FallbackModelAntigravity:     updatedSettings.FallbackModelAntigravity,
+		DefaultBalance:                       updatedSettings.DefaultBalance,
-		EnableIdentityPatch:          updatedSettings.EnableIdentityPatch,
+		EnableModelFallback:                  updatedSettings.EnableModelFallback,
-		IdentityPatchPrompt:          updatedSettings.IdentityPatchPrompt,
+		FallbackModelAnthropic:               updatedSettings.FallbackModelAnthropic,
+		FallbackModelOpenAI:                  updatedSettings.FallbackModelOpenAI,
+		FallbackModelGemini:                  updatedSettings.FallbackModelGemini,
+		FallbackModelAntigravity:             updatedSettings.FallbackModelAntigravity,
+		EnableIdentityPatch:                  updatedSettings.EnableIdentityPatch,
+		IdentityPatchPrompt:                  updatedSettings.IdentityPatchPrompt,
 	})
 }
 
@@ -298,6 +351,18 @@ func diffSettings(before *service.SystemSettings, after *service.SystemSettings,
 	if req.TurnstileSecretKey != "" {
 		changed = append(changed, "turnstile_secret_key")
 	}
+	if before.LinuxDoConnectEnabled != after.LinuxDoConnectEnabled {
+		changed = append(changed, "linuxdo_connect_enabled")
+	}
+	if before.LinuxDoConnectClientID != after.LinuxDoConnectClientID {
+		changed = append(changed, "linuxdo_connect_client_id")
+	}
+	if req.LinuxDoConnectClientSecret != "" {
+		changed = append(changed, "linuxdo_connect_client_secret")
+	}
+	if before.LinuxDoConnectRedirectURL != after.LinuxDoConnectRedirectURL {
+		changed = append(changed, "linuxdo_connect_redirect_url")
+	}
 	if before.SiteName != after.SiteName {
 		changed = append(changed, "site_name")
 	}
@@ -316,6 +381,9 @@ func diffSettings(before *service.SystemSettings, after *service.SystemSettings,
 	if before.DocURL != after.DocURL {
 		changed = append(changed, "doc_url")
 	}
+	if before.HomeContent != after.HomeContent {
+		changed = append(changed, "home_content")
+	}
 	if before.DefaultConcurrency != after.DefaultConcurrency {
 		changed = append(changed, "default_concurrency")
 	}
@@ -337,6 +405,12 @@ func diffSettings(before *service.SystemSettings, after *service.SystemSettings,
 	if before.FallbackModelAntigravity != after.FallbackModelAntigravity {
 		changed = append(changed, "fallback_model_antigravity")
 	}
+	if before.EnableIdentityPatch != after.EnableIdentityPatch {
+		changed = append(changed, "enable_identity_patch")
+	}
+	if before.IdentityPatchPrompt != after.IdentityPatchPrompt {
+		changed = append(changed, "identity_patch_prompt")
+	}
 	return changed
 }
 

backend/internal/handler/admin/user_handler.go

@@ -2,6 +2,7 @@ package admin
 
 import (
 	"strconv"
+	"strings"
 
 	"github.com/Wei-Shaw/sub2api/internal/handler/dto"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
@@ -63,10 +64,17 @@ type UpdateBalanceRequest struct {
 func (h *UserHandler) List(c *gin.Context) {
 	page, pageSize := response.ParsePagination(c)
 
+	search := c.Query("search")
+	// 标准化和验证 search 参数
+	search = strings.TrimSpace(search)
+	if len(search) > 100 {
+		search = search[:100]
+	}
+
 	filters := service.UserListFilters{
 		Status:     c.Query("status"),
 		Role:       c.Query("role"),
-		Search:     c.Query("search"),
+		Search:     search,
 		Attributes: parseAttributeFilters(c),
 	}
 

backend/internal/handler/api_key_handler.go

@@ -27,16 +27,20 @@ func NewAPIKeyHandler(apiKeyService *service.APIKeyService) *APIKeyHandler {
 
 // CreateAPIKeyRequest represents the create API key request payload
 type CreateAPIKeyRequest struct {
-	Name      string  `json:"name" binding:"required"`
+	Name        string   `json:"name" binding:"required"`
-	GroupID   *int64  `json:"group_id"`   // nullable
+	GroupID     *int64   `json:"group_id"`     // nullable
-	CustomKey *string `json:"custom_key"` // 可选的自定义key
+	CustomKey   *string  `json:"custom_key"`   // 可选的自定义key
+	IPWhitelist []string `json:"ip_whitelist"` // IP 白名单
+	IPBlacklist []string `json:"ip_blacklist"` // IP 黑名单
 }
 
 // UpdateAPIKeyRequest represents the update API key request payload
 type UpdateAPIKeyRequest struct {
-	Name    string `json:"name"`
+	Name        string   `json:"name"`
-	GroupID *int64 `json:"group_id"`
+	GroupID     *int64   `json:"group_id"`
-	Status  string `json:"status" binding:"omitempty,oneof=active inactive"`
+	Status      string   `json:"status" binding:"omitempty,oneof=active inactive"`
+	IPWhitelist []string `json:"ip_whitelist"` // IP 白名单
+	IPBlacklist []string `json:"ip_blacklist"` // IP 黑名单
 }
 
 // List handles listing user's API keys with pagination
@@ -110,9 +114,11 @@ func (h *APIKeyHandler) Create(c *gin.Context) {
 	}
 
 	svcReq := service.CreateAPIKeyRequest{
-		Name:      req.Name,
+		Name:        req.Name,
-		GroupID:   req.GroupID,
+		GroupID:     req.GroupID,
-		CustomKey: req.CustomKey,
+		CustomKey:   req.CustomKey,
+		IPWhitelist: req.IPWhitelist,
+		IPBlacklist: req.IPBlacklist,
 	}
 	key, err := h.apiKeyService.Create(c.Request.Context(), subject.UserID, svcReq)
 	if err != nil {
@@ -144,7 +150,10 @@ func (h *APIKeyHandler) Update(c *gin.Context) {
 		return
 	}
 
-	svcReq := service.UpdateAPIKeyRequest{}
+	svcReq := service.UpdateAPIKeyRequest{
+		IPWhitelist: req.IPWhitelist,
+		IPBlacklist: req.IPBlacklist,
+	}
 	if req.Name != "" {
 		svcReq.Name = &req.Name
 	}

backend/internal/handler/auth_handler.go

@@ -12,17 +12,21 @@ import (
 
 // AuthHandler handles authentication-related requests
 type AuthHandler struct {
-	cfg         *config.Config
+	cfg          *config.Config
-	authService *service.AuthService
+	authService  *service.AuthService
-	userService *service.UserService
+	userService  *service.UserService
+	settingSvc   *service.SettingService
+	promoService *service.PromoService
 }
 
 // NewAuthHandler creates a new AuthHandler
-func NewAuthHandler(cfg *config.Config, authService *service.AuthService, userService *service.UserService) *AuthHandler {
+func NewAuthHandler(cfg *config.Config, authService *service.AuthService, userService *service.UserService, settingService *service.SettingService, promoService *service.PromoService) *AuthHandler {
 	return &AuthHandler{
-		cfg:         cfg,
+		cfg:          cfg,
-		authService: authService,
+		authService:  authService,
-		userService: userService,
+		userService:  userService,
+		settingSvc:   settingService,
+		promoService: promoService,
 	}
 }
 
@@ -32,6 +36,7 @@ type RegisterRequest struct {
 	Password       string `json:"password" binding:"required,min=6"`
 	VerifyCode     string `json:"verify_code"`
 	TurnstileToken string `json:"turnstile_token"`
+	PromoCode      string `json:"promo_code"` // 注册优惠码
 }
 
 // SendVerifyCodeRequest 发送验证码请求
@@ -77,7 +82,7 @@ func (h *AuthHandler) Register(c *gin.Context) {
 		}
 	}
 
-	token, user, err := h.authService.RegisterWithVerification(c.Request.Context(), req.Email, req.Password, req.VerifyCode)
+	token, user, err := h.authService.RegisterWithVerification(c.Request.Context(), req.Email, req.Password, req.VerifyCode, req.PromoCode)
 	if err != nil {
 		response.ErrorFrom(c, err)
 		return
@@ -172,3 +177,63 @@ func (h *AuthHandler) GetCurrentUser(c *gin.Context) {
 
 	response.Success(c, UserResponse{User: dto.UserFromService(user), RunMode: runMode})
 }
+
+// ValidatePromoCodeRequest 验证优惠码请求
+type ValidatePromoCodeRequest struct {
+	Code string `json:"code" binding:"required"`
+}
+
+// ValidatePromoCodeResponse 验证优惠码响应
+type ValidatePromoCodeResponse struct {
+	Valid       bool    `json:"valid"`
+	BonusAmount float64 `json:"bonus_amount,omitempty"`
+	ErrorCode   string  `json:"error_code,omitempty"`
+	Message     string  `json:"message,omitempty"`
+}
+
+// ValidatePromoCode 验证优惠码（公开接口，注册前调用）
+// POST /api/v1/auth/validate-promo-code
+func (h *AuthHandler) ValidatePromoCode(c *gin.Context) {
+	var req ValidatePromoCodeRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "Invalid request: "+err.Error())
+		return
+	}
+
+	promoCode, err := h.promoService.ValidatePromoCode(c.Request.Context(), req.Code)
+	if err != nil {
+		// 根据错误类型返回对应的错误码
+		errorCode := "PROMO_CODE_INVALID"
+		switch err {
+		case service.ErrPromoCodeNotFound:
+			errorCode = "PROMO_CODE_NOT_FOUND"
+		case service.ErrPromoCodeExpired:
+			errorCode = "PROMO_CODE_EXPIRED"
+		case service.ErrPromoCodeDisabled:
+			errorCode = "PROMO_CODE_DISABLED"
+		case service.ErrPromoCodeMaxUsed:
+			errorCode = "PROMO_CODE_MAX_USED"
+		case service.ErrPromoCodeAlreadyUsed:
+			errorCode = "PROMO_CODE_ALREADY_USED"
+		}
+
+		response.Success(c, ValidatePromoCodeResponse{
+			Valid:     false,
+			ErrorCode: errorCode,
+		})
+		return
+	}
+
+	if promoCode == nil {
+		response.Success(c, ValidatePromoCodeResponse{
+			Valid:     false,
+			ErrorCode: "PROMO_CODE_INVALID",
+		})
+		return
+	}
+
+	response.Success(c, ValidatePromoCodeResponse{
+		Valid:       true,
+		BonusAmount: promoCode.BonusAmount,
+	})
+}

backend/internal/handler/auth_linuxdo_oauth.go

@@ -0,0 +1,679 @@
+package handler
+
+import (
+	"context"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"log"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/oauth"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+
+	"github.com/gin-gonic/gin"
+	"github.com/imroc/req/v3"
+	"github.com/tidwall/gjson"
+)
+
+const (
+	linuxDoOAuthCookiePath        = "/api/v1/auth/oauth/linuxdo"
+	linuxDoOAuthStateCookieName   = "linuxdo_oauth_state"
+	linuxDoOAuthVerifierCookie    = "linuxdo_oauth_verifier"
+	linuxDoOAuthRedirectCookie    = "linuxdo_oauth_redirect"
+	linuxDoOAuthCookieMaxAgeSec   = 10 * 60 // 10 minutes
+	linuxDoOAuthDefaultRedirectTo = "/dashboard"
+	linuxDoOAuthDefaultFrontendCB = "/auth/linuxdo/callback"
+
+	linuxDoOAuthMaxRedirectLen      = 2048
+	linuxDoOAuthMaxFragmentValueLen = 512
+	linuxDoOAuthMaxSubjectLen       = 64 - len("linuxdo-")
+)
+
+type linuxDoTokenResponse struct {
+	AccessToken  string `json:"access_token"`
+	TokenType    string `json:"token_type"`
+	ExpiresIn    int64  `json:"expires_in"`
+	RefreshToken string `json:"refresh_token,omitempty"`
+	Scope        string `json:"scope,omitempty"`
+}
+
+type linuxDoTokenExchangeError struct {
+	StatusCode          int
+	ProviderError       string
+	ProviderDescription string
+	Body                string
+}
+
+func (e *linuxDoTokenExchangeError) Error() string {
+	if e == nil {
+		return ""
+	}
+	parts := []string{fmt.Sprintf("token exchange status=%d", e.StatusCode)}
+	if strings.TrimSpace(e.ProviderError) != "" {
+		parts = append(parts, "error="+strings.TrimSpace(e.ProviderError))
+	}
+	if strings.TrimSpace(e.ProviderDescription) != "" {
+		parts = append(parts, "error_description="+strings.TrimSpace(e.ProviderDescription))
+	}
+	return strings.Join(parts, " ")
+}
+
+// LinuxDoOAuthStart 启动 LinuxDo Connect OAuth 登录流程。
+// GET /api/v1/auth/oauth/linuxdo/start?redirect=/dashboard
+func (h *AuthHandler) LinuxDoOAuthStart(c *gin.Context) {
+	cfg, err := h.getLinuxDoOAuthConfig(c.Request.Context())
+	if err != nil {
+		response.ErrorFrom(c, err)
+		return
+	}
+
+	state, err := oauth.GenerateState()
+	if err != nil {
+		response.ErrorFrom(c, infraerrors.InternalServer("OAUTH_STATE_GEN_FAILED", "failed to generate oauth state").WithCause(err))
+		return
+	}
+
+	redirectTo := sanitizeFrontendRedirectPath(c.Query("redirect"))
+	if redirectTo == "" {
+		redirectTo = linuxDoOAuthDefaultRedirectTo
+	}
+
+	secureCookie := isRequestHTTPS(c)
+	setCookie(c, linuxDoOAuthStateCookieName, encodeCookieValue(state), linuxDoOAuthCookieMaxAgeSec, secureCookie)
+	setCookie(c, linuxDoOAuthRedirectCookie, encodeCookieValue(redirectTo), linuxDoOAuthCookieMaxAgeSec, secureCookie)
+
+	codeChallenge := ""
+	if cfg.UsePKCE {
+		verifier, err := oauth.GenerateCodeVerifier()
+		if err != nil {
+			response.ErrorFrom(c, infraerrors.InternalServer("OAUTH_PKCE_GEN_FAILED", "failed to generate pkce verifier").WithCause(err))
+			return
+		}
+		codeChallenge = oauth.GenerateCodeChallenge(verifier)
+		setCookie(c, linuxDoOAuthVerifierCookie, encodeCookieValue(verifier), linuxDoOAuthCookieMaxAgeSec, secureCookie)
+	}
+
+	redirectURI := strings.TrimSpace(cfg.RedirectURL)
+	if redirectURI == "" {
+		response.ErrorFrom(c, infraerrors.InternalServer("OAUTH_CONFIG_INVALID", "oauth redirect url not configured"))
+		return
+	}
+
+	authURL, err := buildLinuxDoAuthorizeURL(cfg, state, codeChallenge, redirectURI)
+	if err != nil {
+		response.ErrorFrom(c, infraerrors.InternalServer("OAUTH_BUILD_URL_FAILED", "failed to build oauth authorization url").WithCause(err))
+		return
+	}
+
+	c.Redirect(http.StatusFound, authURL)
+}
+
+// LinuxDoOAuthCallback 处理 OAuth 回调：创建/登录用户，然后重定向到前端。
+// GET /api/v1/auth/oauth/linuxdo/callback?code=...&state=...
+func (h *AuthHandler) LinuxDoOAuthCallback(c *gin.Context) {
+	cfg, cfgErr := h.getLinuxDoOAuthConfig(c.Request.Context())
+	if cfgErr != nil {
+		response.ErrorFrom(c, cfgErr)
+		return
+	}
+
+	frontendCallback := strings.TrimSpace(cfg.FrontendRedirectURL)
+	if frontendCallback == "" {
+		frontendCallback = linuxDoOAuthDefaultFrontendCB
+	}
+
+	if providerErr := strings.TrimSpace(c.Query("error")); providerErr != "" {
+		redirectOAuthError(c, frontendCallback, "provider_error", providerErr, c.Query("error_description"))
+		return
+	}
+
+	code := strings.TrimSpace(c.Query("code"))
+	state := strings.TrimSpace(c.Query("state"))
+	if code == "" || state == "" {
+		redirectOAuthError(c, frontendCallback, "missing_params", "missing code/state", "")
+		return
+	}
+
+	secureCookie := isRequestHTTPS(c)
+	defer func() {
+		clearCookie(c, linuxDoOAuthStateCookieName, secureCookie)
+		clearCookie(c, linuxDoOAuthVerifierCookie, secureCookie)
+		clearCookie(c, linuxDoOAuthRedirectCookie, secureCookie)
+	}()
+
+	expectedState, err := readCookieDecoded(c, linuxDoOAuthStateCookieName)
+	if err != nil || expectedState == "" || state != expectedState {
+		redirectOAuthError(c, frontendCallback, "invalid_state", "invalid oauth state", "")
+		return
+	}
+
+	redirectTo, _ := readCookieDecoded(c, linuxDoOAuthRedirectCookie)
+	redirectTo = sanitizeFrontendRedirectPath(redirectTo)
+	if redirectTo == "" {
+		redirectTo = linuxDoOAuthDefaultRedirectTo
+	}
+
+	codeVerifier := ""
+	if cfg.UsePKCE {
+		codeVerifier, _ = readCookieDecoded(c, linuxDoOAuthVerifierCookie)
+		if codeVerifier == "" {
+			redirectOAuthError(c, frontendCallback, "missing_verifier", "missing pkce verifier", "")
+			return
+		}
+	}
+
+	redirectURI := strings.TrimSpace(cfg.RedirectURL)
+	if redirectURI == "" {
+		redirectOAuthError(c, frontendCallback, "config_error", "oauth redirect url not configured", "")
+		return
+	}
+
+	tokenResp, err := linuxDoExchangeCode(c.Request.Context(), cfg, code, redirectURI, codeVerifier)
+	if err != nil {
+		description := ""
+		var exchangeErr *linuxDoTokenExchangeError
+		if errors.As(err, &exchangeErr) && exchangeErr != nil {
+			log.Printf(
+				"[LinuxDo OAuth] token exchange failed: status=%d provider_error=%q provider_description=%q body=%s",
+				exchangeErr.StatusCode,
+				exchangeErr.ProviderError,
+				exchangeErr.ProviderDescription,
+				truncateLogValue(exchangeErr.Body, 2048),
+			)
+			description = exchangeErr.Error()
+		} else {
+			log.Printf("[LinuxDo OAuth] token exchange failed: %v", err)
+			description = err.Error()
+		}
+		redirectOAuthError(c, frontendCallback, "token_exchange_failed", "failed to exchange oauth code", singleLine(description))
+		return
+	}
+
+	email, username, subject, err := linuxDoFetchUserInfo(c.Request.Context(), cfg, tokenResp)
+	if err != nil {
+		log.Printf("[LinuxDo OAuth] userinfo fetch failed: %v", err)
+		redirectOAuthError(c, frontendCallback, "userinfo_failed", "failed to fetch user info", "")
+		return
+	}
+
+	// 安全考虑：不要把第三方返回的 email 直接映射到本地账号（可能与本地邮箱用户冲突导致账号被接管）。
+	// 统一使用基于 subject 的稳定合成邮箱来做账号绑定。
+	if subject != "" {
+		email = linuxDoSyntheticEmail(subject)
+	}
+
+	jwtToken, _, err := h.authService.LoginOrRegisterOAuth(c.Request.Context(), email, username)
+	if err != nil {
+		// 避免把内部细节泄露给客户端；给前端保留结构化原因与提示信息即可。
+		redirectOAuthError(c, frontendCallback, "login_failed", infraerrors.Reason(err), infraerrors.Message(err))
+		return
+	}
+
+	fragment := url.Values{}
+	fragment.Set("access_token", jwtToken)
+	fragment.Set("token_type", "Bearer")
+	fragment.Set("redirect", redirectTo)
+	redirectWithFragment(c, frontendCallback, fragment)
+}
+
+func (h *AuthHandler) getLinuxDoOAuthConfig(ctx context.Context) (config.LinuxDoConnectConfig, error) {
+	if h != nil && h.settingSvc != nil {
+		return h.settingSvc.GetLinuxDoConnectOAuthConfig(ctx)
+	}
+	if h == nil || h.cfg == nil {
+		return config.LinuxDoConnectConfig{}, infraerrors.ServiceUnavailable("CONFIG_NOT_READY", "config not loaded")
+	}
+	if !h.cfg.LinuxDo.Enabled {
+		return config.LinuxDoConnectConfig{}, infraerrors.NotFound("OAUTH_DISABLED", "oauth login is disabled")
+	}
+	return h.cfg.LinuxDo, nil
+}
+
+func linuxDoExchangeCode(
+	ctx context.Context,
+	cfg config.LinuxDoConnectConfig,
+	code string,
+	redirectURI string,
+	codeVerifier string,
+) (*linuxDoTokenResponse, error) {
+	client := req.C().SetTimeout(30 * time.Second)
+
+	form := url.Values{}
+	form.Set("grant_type", "authorization_code")
+	form.Set("client_id", cfg.ClientID)
+	form.Set("code", code)
+	form.Set("redirect_uri", redirectURI)
+	if cfg.UsePKCE {
+		form.Set("code_verifier", codeVerifier)
+	}
+
+	r := client.R().
+		SetContext(ctx).
+		SetHeader("Accept", "application/json")
+
+	switch strings.ToLower(strings.TrimSpace(cfg.TokenAuthMethod)) {
+	case "", "client_secret_post":
+		form.Set("client_secret", cfg.ClientSecret)
+	case "client_secret_basic":
+		r.SetBasicAuth(cfg.ClientID, cfg.ClientSecret)
+	case "none":
+	default:
+		return nil, fmt.Errorf("unsupported token_auth_method: %s", cfg.TokenAuthMethod)
+	}
+
+	resp, err := r.SetFormDataFromValues(form).Post(cfg.TokenURL)
+	if err != nil {
+		return nil, fmt.Errorf("request token: %w", err)
+	}
+	body := strings.TrimSpace(resp.String())
+	if !resp.IsSuccessState() {
+		providerErr, providerDesc := parseOAuthProviderError(body)
+		return nil, &linuxDoTokenExchangeError{
+			StatusCode:          resp.StatusCode,
+			ProviderError:       providerErr,
+			ProviderDescription: providerDesc,
+			Body:                body,
+		}
+	}
+
+	tokenResp, ok := parseLinuxDoTokenResponse(body)
+	if !ok || strings.TrimSpace(tokenResp.AccessToken) == "" {
+		return nil, &linuxDoTokenExchangeError{
+			StatusCode: resp.StatusCode,
+			Body:       body,
+		}
+	}
+	if strings.TrimSpace(tokenResp.TokenType) == "" {
+		tokenResp.TokenType = "Bearer"
+	}
+	return tokenResp, nil
+}
+
+func linuxDoFetchUserInfo(
+	ctx context.Context,
+	cfg config.LinuxDoConnectConfig,
+	token *linuxDoTokenResponse,
+) (email string, username string, subject string, err error) {
+	client := req.C().SetTimeout(30 * time.Second)
+	authorization, err := buildBearerAuthorization(token.TokenType, token.AccessToken)
+	if err != nil {
+		return "", "", "", fmt.Errorf("invalid token for userinfo request: %w", err)
+	}
+
+	resp, err := client.R().
+		SetContext(ctx).
+		SetHeader("Accept", "application/json").
+		SetHeader("Authorization", authorization).
+		Get(cfg.UserInfoURL)
+	if err != nil {
+		return "", "", "", fmt.Errorf("request userinfo: %w", err)
+	}
+	if !resp.IsSuccessState() {
+		return "", "", "", fmt.Errorf("userinfo status=%d", resp.StatusCode)
+	}
+
+	return linuxDoParseUserInfo(resp.String(), cfg)
+}
+
+func linuxDoParseUserInfo(body string, cfg config.LinuxDoConnectConfig) (email string, username string, subject string, err error) {
+	email = firstNonEmpty(
+		getGJSON(body, cfg.UserInfoEmailPath),
+		getGJSON(body, "email"),
+		getGJSON(body, "user.email"),
+		getGJSON(body, "data.email"),
+		getGJSON(body, "attributes.email"),
+	)
+	username = firstNonEmpty(
+		getGJSON(body, cfg.UserInfoUsernamePath),
+		getGJSON(body, "username"),
+		getGJSON(body, "preferred_username"),
+		getGJSON(body, "name"),
+		getGJSON(body, "user.username"),
+		getGJSON(body, "user.name"),
+	)
+	subject = firstNonEmpty(
+		getGJSON(body, cfg.UserInfoIDPath),
+		getGJSON(body, "sub"),
+		getGJSON(body, "id"),
+		getGJSON(body, "user_id"),
+		getGJSON(body, "uid"),
+		getGJSON(body, "user.id"),
+	)
+
+	subject = strings.TrimSpace(subject)
+	if subject == "" {
+		return "", "", "", errors.New("userinfo missing id field")
+	}
+	if !isSafeLinuxDoSubject(subject) {
+		return "", "", "", errors.New("userinfo returned invalid id field")
+	}
+
+	email = strings.TrimSpace(email)
+	if email == "" {
+		// LinuxDo Connect 的 userinfo 可能不提供 email。为兼容现有用户模型（email 必填且唯一），使用稳定的合成邮箱。
+		email = linuxDoSyntheticEmail(subject)
+	}
+
+	username = strings.TrimSpace(username)
+	if username == "" {
+		username = "linuxdo_" + subject
+	}
+
+	return email, username, subject, nil
+}
+
+func buildLinuxDoAuthorizeURL(cfg config.LinuxDoConnectConfig, state string, codeChallenge string, redirectURI string) (string, error) {
+	u, err := url.Parse(cfg.AuthorizeURL)
+	if err != nil {
+		return "", fmt.Errorf("parse authorize_url: %w", err)
+	}
+
+	q := u.Query()
+	q.Set("response_type", "code")
+	q.Set("client_id", cfg.ClientID)
+	q.Set("redirect_uri", redirectURI)
+	if strings.TrimSpace(cfg.Scopes) != "" {
+		q.Set("scope", cfg.Scopes)
+	}
+	q.Set("state", state)
+	if cfg.UsePKCE {
+		q.Set("code_challenge", codeChallenge)
+		q.Set("code_challenge_method", "S256")
+	}
+
+	u.RawQuery = q.Encode()
+	return u.String(), nil
+}
+
+func redirectOAuthError(c *gin.Context, frontendCallback string, code string, message string, description string) {
+	fragment := url.Values{}
+	fragment.Set("error", truncateFragmentValue(code))
+	if strings.TrimSpace(message) != "" {
+		fragment.Set("error_message", truncateFragmentValue(message))
+	}
+	if strings.TrimSpace(description) != "" {
+		fragment.Set("error_description", truncateFragmentValue(description))
+	}
+	redirectWithFragment(c, frontendCallback, fragment)
+}
+
+func redirectWithFragment(c *gin.Context, frontendCallback string, fragment url.Values) {
+	u, err := url.Parse(frontendCallback)
+	if err != nil {
+		// 兜底：尽力跳转到默认页面，避免卡死在回调页。
+		c.Redirect(http.StatusFound, linuxDoOAuthDefaultRedirectTo)
+		return
+	}
+	if u.Scheme != "" && !strings.EqualFold(u.Scheme, "http") && !strings.EqualFold(u.Scheme, "https") {
+		c.Redirect(http.StatusFound, linuxDoOAuthDefaultRedirectTo)
+		return
+	}
+	u.Fragment = fragment.Encode()
+	c.Header("Cache-Control", "no-store")
+	c.Header("Pragma", "no-cache")
+	c.Redirect(http.StatusFound, u.String())
+}
+
+func firstNonEmpty(values ...string) string {
+	for _, v := range values {
+		v = strings.TrimSpace(v)
+		if v != "" {
+			return v
+		}
+	}
+	return ""
+}
+
+func parseOAuthProviderError(body string) (providerErr string, providerDesc string) {
+	body = strings.TrimSpace(body)
+	if body == "" {
+		return "", ""
+	}
+
+	providerErr = firstNonEmpty(
+		getGJSON(body, "error"),
+		getGJSON(body, "code"),
+		getGJSON(body, "error.code"),
+	)
+	providerDesc = firstNonEmpty(
+		getGJSON(body, "error_description"),
+		getGJSON(body, "error.message"),
+		getGJSON(body, "message"),
+		getGJSON(body, "detail"),
+	)
+
+	if providerErr != "" || providerDesc != "" {
+		return providerErr, providerDesc
+	}
+
+	values, err := url.ParseQuery(body)
+	if err != nil {
+		return "", ""
+	}
+	providerErr = firstNonEmpty(values.Get("error"), values.Get("code"))
+	providerDesc = firstNonEmpty(values.Get("error_description"), values.Get("error_message"), values.Get("message"))
+	return providerErr, providerDesc
+}
+
+func parseLinuxDoTokenResponse(body string) (*linuxDoTokenResponse, bool) {
+	body = strings.TrimSpace(body)
+	if body == "" {
+		return nil, false
+	}
+
+	accessToken := strings.TrimSpace(getGJSON(body, "access_token"))
+	if accessToken != "" {
+		tokenType := strings.TrimSpace(getGJSON(body, "token_type"))
+		refreshToken := strings.TrimSpace(getGJSON(body, "refresh_token"))
+		scope := strings.TrimSpace(getGJSON(body, "scope"))
+		expiresIn := gjson.Get(body, "expires_in").Int()
+		return &linuxDoTokenResponse{
+			AccessToken:  accessToken,
+			TokenType:    tokenType,
+			ExpiresIn:    expiresIn,
+			RefreshToken: refreshToken,
+			Scope:        scope,
+		}, true
+	}
+
+	values, err := url.ParseQuery(body)
+	if err != nil {
+		return nil, false
+	}
+	accessToken = strings.TrimSpace(values.Get("access_token"))
+	if accessToken == "" {
+		return nil, false
+	}
+	expiresIn := int64(0)
+	if raw := strings.TrimSpace(values.Get("expires_in")); raw != "" {
+		if v, err := strconv.ParseInt(raw, 10, 64); err == nil {
+			expiresIn = v
+		}
+	}
+	return &linuxDoTokenResponse{
+		AccessToken:  accessToken,
+		TokenType:    strings.TrimSpace(values.Get("token_type")),
+		ExpiresIn:    expiresIn,
+		RefreshToken: strings.TrimSpace(values.Get("refresh_token")),
+		Scope:        strings.TrimSpace(values.Get("scope")),
+	}, true
+}
+
+func getGJSON(body string, path string) string {
+	path = strings.TrimSpace(path)
+	if path == "" {
+		return ""
+	}
+	res := gjson.Get(body, path)
+	if !res.Exists() {
+		return ""
+	}
+	return res.String()
+}
+
+func truncateLogValue(value string, maxLen int) string {
+	value = strings.TrimSpace(value)
+	if value == "" || maxLen <= 0 {
+		return ""
+	}
+	if len(value) <= maxLen {
+		return value
+	}
+	value = value[:maxLen]
+	for !utf8.ValidString(value) {
+		value = value[:len(value)-1]
+	}
+	return value
+}
+
+func singleLine(value string) string {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return ""
+	}
+	return strings.Join(strings.Fields(value), " ")
+}
+
+func sanitizeFrontendRedirectPath(path string) string {
+	path = strings.TrimSpace(path)
+	if path == "" {
+		return ""
+	}
+	if len(path) > linuxDoOAuthMaxRedirectLen {
+		return ""
+	}
+	// 只允许同源相对路径（避免开放重定向）。
+	if !strings.HasPrefix(path, "/") {
+		return ""
+	}
+	if strings.HasPrefix(path, "//") {
+		return ""
+	}
+	if strings.Contains(path, "://") {
+		return ""
+	}
+	if strings.ContainsAny(path, "\r\n") {
+		return ""
+	}
+	return path
+}
+
+func isRequestHTTPS(c *gin.Context) bool {
+	if c.Request.TLS != nil {
+		return true
+	}
+	proto := strings.ToLower(strings.TrimSpace(c.GetHeader("X-Forwarded-Proto")))
+	return proto == "https"
+}
+
+func encodeCookieValue(value string) string {
+	return base64.RawURLEncoding.EncodeToString([]byte(value))
+}
+
+func decodeCookieValue(value string) (string, error) {
+	raw, err := base64.RawURLEncoding.DecodeString(value)
+	if err != nil {
+		return "", err
+	}
+	return string(raw), nil
+}
+
+func readCookieDecoded(c *gin.Context, name string) (string, error) {
+	ck, err := c.Request.Cookie(name)
+	if err != nil {
+		return "", err
+	}
+	return decodeCookieValue(ck.Value)
+}
+
+func setCookie(c *gin.Context, name string, value string, maxAgeSec int, secure bool) {
+	http.SetCookie(c.Writer, &http.Cookie{
+		Name:     name,
+		Value:    value,
+		Path:     linuxDoOAuthCookiePath,
+		MaxAge:   maxAgeSec,
+		HttpOnly: true,
+		Secure:   secure,
+		SameSite: http.SameSiteLaxMode,
+	})
+}
+
+func clearCookie(c *gin.Context, name string, secure bool) {
+	http.SetCookie(c.Writer, &http.Cookie{
+		Name:     name,
+		Value:    "",
+		Path:     linuxDoOAuthCookiePath,
+		MaxAge:   -1,
+		HttpOnly: true,
+		Secure:   secure,
+		SameSite: http.SameSiteLaxMode,
+	})
+}
+
+func truncateFragmentValue(value string) string {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return ""
+	}
+	if len(value) > linuxDoOAuthMaxFragmentValueLen {
+		value = value[:linuxDoOAuthMaxFragmentValueLen]
+		for !utf8.ValidString(value) {
+			value = value[:len(value)-1]
+		}
+	}
+	return value
+}
+
+func buildBearerAuthorization(tokenType, accessToken string) (string, error) {
+	tokenType = strings.TrimSpace(tokenType)
+	if tokenType == "" {
+		tokenType = "Bearer"
+	}
+	if !strings.EqualFold(tokenType, "Bearer") {
+		return "", fmt.Errorf("unsupported token_type: %s", tokenType)
+	}
+
+	accessToken = strings.TrimSpace(accessToken)
+	if accessToken == "" {
+		return "", errors.New("missing access_token")
+	}
+	if strings.ContainsAny(accessToken, " \t\r\n") {
+		return "", errors.New("access_token contains whitespace")
+	}
+	return "Bearer " + accessToken, nil
+}
+
+func isSafeLinuxDoSubject(subject string) bool {
+	subject = strings.TrimSpace(subject)
+	if subject == "" || len(subject) > linuxDoOAuthMaxSubjectLen {
+		return false
+	}
+	for _, r := range subject {
+		switch {
+		case r >= '0' && r <= '9':
+		case r >= 'a' && r <= 'z':
+		case r >= 'A' && r <= 'Z':
+		case r == '_' || r == '-':
+		default:
+			return false
+		}
+	}
+	return true
+}
+
+func linuxDoSyntheticEmail(subject string) string {
+	subject = strings.TrimSpace(subject)
+	if subject == "" {
+		return ""
+	}
+	return "linuxdo-" + subject + service.LinuxDoConnectSyntheticEmailDomain
+}

backend/internal/handler/auth_linuxdo_oauth_test.go

@@ -0,0 +1,108 @@
+package handler
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/stretchr/testify/require"
+)
+
+func TestSanitizeFrontendRedirectPath(t *testing.T) {
+	require.Equal(t, "/dashboard", sanitizeFrontendRedirectPath("/dashboard"))
+	require.Equal(t, "/dashboard", sanitizeFrontendRedirectPath(" /dashboard "))
+	require.Equal(t, "", sanitizeFrontendRedirectPath("dashboard"))
+	require.Equal(t, "", sanitizeFrontendRedirectPath("//evil.com"))
+	require.Equal(t, "", sanitizeFrontendRedirectPath("https://evil.com"))
+	require.Equal(t, "", sanitizeFrontendRedirectPath("/\nfoo"))
+
+	long := "/" + strings.Repeat("a", linuxDoOAuthMaxRedirectLen)
+	require.Equal(t, "", sanitizeFrontendRedirectPath(long))
+}
+
+func TestBuildBearerAuthorization(t *testing.T) {
+	auth, err := buildBearerAuthorization("", "token123")
+	require.NoError(t, err)
+	require.Equal(t, "Bearer token123", auth)
+
+	auth, err = buildBearerAuthorization("bearer", "token123")
+	require.NoError(t, err)
+	require.Equal(t, "Bearer token123", auth)
+
+	_, err = buildBearerAuthorization("MAC", "token123")
+	require.Error(t, err)
+
+	_, err = buildBearerAuthorization("Bearer", "token 123")
+	require.Error(t, err)
+}
+
+func TestLinuxDoParseUserInfoParsesIDAndUsername(t *testing.T) {
+	cfg := config.LinuxDoConnectConfig{
+		UserInfoURL: "https://connect.linux.do/api/user",
+	}
+
+	email, username, subject, err := linuxDoParseUserInfo(`{"id":123,"username":"alice"}`, cfg)
+	require.NoError(t, err)
+	require.Equal(t, "123", subject)
+	require.Equal(t, "alice", username)
+	require.Equal(t, "linuxdo-123@linuxdo-connect.invalid", email)
+}
+
+func TestLinuxDoParseUserInfoDefaultsUsername(t *testing.T) {
+	cfg := config.LinuxDoConnectConfig{
+		UserInfoURL: "https://connect.linux.do/api/user",
+	}
+
+	email, username, subject, err := linuxDoParseUserInfo(`{"id":"123"}`, cfg)
+	require.NoError(t, err)
+	require.Equal(t, "123", subject)
+	require.Equal(t, "linuxdo_123", username)
+	require.Equal(t, "linuxdo-123@linuxdo-connect.invalid", email)
+}
+
+func TestLinuxDoParseUserInfoRejectsUnsafeSubject(t *testing.T) {
+	cfg := config.LinuxDoConnectConfig{
+		UserInfoURL: "https://connect.linux.do/api/user",
+	}
+
+	_, _, _, err := linuxDoParseUserInfo(`{"id":"123@456"}`, cfg)
+	require.Error(t, err)
+
+	tooLong := strings.Repeat("a", linuxDoOAuthMaxSubjectLen+1)
+	_, _, _, err = linuxDoParseUserInfo(`{"id":"`+tooLong+`"}`, cfg)
+	require.Error(t, err)
+}
+
+func TestParseOAuthProviderErrorJSON(t *testing.T) {
+	code, desc := parseOAuthProviderError(`{"error":"invalid_client","error_description":"bad secret"}`)
+	require.Equal(t, "invalid_client", code)
+	require.Equal(t, "bad secret", desc)
+}
+
+func TestParseOAuthProviderErrorForm(t *testing.T) {
+	code, desc := parseOAuthProviderError("error=invalid_request&error_description=Missing+code_verifier")
+	require.Equal(t, "invalid_request", code)
+	require.Equal(t, "Missing code_verifier", desc)
+}
+
+func TestParseLinuxDoTokenResponseJSON(t *testing.T) {
+	token, ok := parseLinuxDoTokenResponse(`{"access_token":"t1","token_type":"Bearer","expires_in":3600,"scope":"user"}`)
+	require.True(t, ok)
+	require.Equal(t, "t1", token.AccessToken)
+	require.Equal(t, "Bearer", token.TokenType)
+	require.Equal(t, int64(3600), token.ExpiresIn)
+	require.Equal(t, "user", token.Scope)
+}
+
+func TestParseLinuxDoTokenResponseForm(t *testing.T) {
+	token, ok := parseLinuxDoTokenResponse("access_token=t2&token_type=bearer&expires_in=60")
+	require.True(t, ok)
+	require.Equal(t, "t2", token.AccessToken)
+	require.Equal(t, "bearer", token.TokenType)
+	require.Equal(t, int64(60), token.ExpiresIn)
+}
+
+func TestSingleLineStripsWhitespace(t *testing.T) {
+	require.Equal(t, "hello world", singleLine("hello\r\nworld"))
+	require.Equal(t, "", singleLine("\n\t\r"))
+}

backend/internal/handler/dto/mappers.go

@@ -53,16 +53,18 @@ func APIKeyFromService(k *service.APIKey) *APIKey {
 		return nil
 	}
 	return &APIKey{
-		ID:        k.ID,
+		ID:          k.ID,
-		UserID:    k.UserID,
+		UserID:      k.UserID,
-		Key:       k.Key,
+		Key:         k.Key,
-		Name:      k.Name,
+		Name:        k.Name,
-		GroupID:   k.GroupID,
+		GroupID:     k.GroupID,
-		Status:    k.Status,
+		Status:      k.Status,
-		CreatedAt: k.CreatedAt,
+		IPWhitelist: k.IPWhitelist,
-		UpdatedAt: k.UpdatedAt,
+		IPBlacklist: k.IPBlacklist,
-		User:      UserFromServiceShallow(k.User),
+		CreatedAt:   k.CreatedAt,
-		Group:     GroupFromServiceShallow(k.Group),
+		UpdatedAt:   k.UpdatedAt,
+		User:        UserFromServiceShallow(k.User),
+		Group:       GroupFromServiceShallow(k.Group),
 	}
 }
 
@@ -250,11 +252,12 @@ func AccountSummaryFromService(a *service.Account) *AccountSummary {
 
 // usageLogFromServiceBase is a helper that converts service UsageLog to DTO.
 // The account parameter allows caller to control what Account info is included.
-func usageLogFromServiceBase(l *service.UsageLog, account *AccountSummary) *UsageLog {
+// The includeIPAddress parameter controls whether to include the IP address (admin-only).
+func usageLogFromServiceBase(l *service.UsageLog, account *AccountSummary, includeIPAddress bool) *UsageLog {
 	if l == nil {
 		return nil
 	}
-	return &UsageLog{
+	result := &UsageLog{
 		ID:                    l.ID,
 		UserID:                l.UserID,
 		APIKeyID:              l.APIKeyID,
@@ -290,21 +293,26 @@ func usageLogFromServiceBase(l *service.UsageLog, account *AccountSummary) *Usag
 		Group:                 GroupFromServiceShallow(l.Group),
 		Subscription:          UserSubscriptionFromService(l.Subscription),
 	}
+	// IP 地址仅对管理员可见
+	if includeIPAddress {
+		result.IPAddress = l.IPAddress
+	}
+	return result
 }
 
 // UsageLogFromService converts a service UsageLog to DTO for regular users.
-// It excludes Account details - users should not see account information.
+// It excludes Account details and IP address - users should not see these.
 func UsageLogFromService(l *service.UsageLog) *UsageLog {
-	return usageLogFromServiceBase(l, nil)
+	return usageLogFromServiceBase(l, nil, false)
 }
 
 // UsageLogFromServiceAdmin converts a service UsageLog to DTO for admin users.
-// It includes minimal Account info (ID, Name only).
+// It includes minimal Account info (ID, Name only) and IP address.
 func UsageLogFromServiceAdmin(l *service.UsageLog) *UsageLog {
 	if l == nil {
 		return nil
 	}
-	return usageLogFromServiceBase(l, AccountSummaryFromService(l.Account))
+	return usageLogFromServiceBase(l, AccountSummaryFromService(l.Account), true)
 }
 
 func SettingFromService(s *service.Setting) *Setting {
@@ -362,3 +370,35 @@ func BulkAssignResultFromService(r *service.BulkAssignResult) *BulkAssignResult
 		Errors:        r.Errors,
 	}
 }
+
+func PromoCodeFromService(pc *service.PromoCode) *PromoCode {
+	if pc == nil {
+		return nil
+	}
+	return &PromoCode{
+		ID:          pc.ID,
+		Code:        pc.Code,
+		BonusAmount: pc.BonusAmount,
+		MaxUses:     pc.MaxUses,
+		UsedCount:   pc.UsedCount,
+		Status:      pc.Status,
+		ExpiresAt:   pc.ExpiresAt,
+		Notes:       pc.Notes,
+		CreatedAt:   pc.CreatedAt,
+		UpdatedAt:   pc.UpdatedAt,
+	}
+}
+
+func PromoCodeUsageFromService(u *service.PromoCodeUsage) *PromoCodeUsage {
+	if u == nil {
+		return nil
+	}
+	return &PromoCodeUsage{
+		ID:          u.ID,
+		PromoCodeID: u.PromoCodeID,
+		UserID:      u.UserID,
+		BonusAmount: u.BonusAmount,
+		UsedAt:      u.UsedAt,
+		User:        UserFromServiceShallow(u.User),
+	}
+}

backend/internal/handler/dto/settings.go

@@ -17,12 +17,18 @@ type SystemSettings struct {
 	TurnstileSiteKey             string `json:"turnstile_site_key"`
 	TurnstileSecretKeyConfigured bool   `json:"turnstile_secret_key_configured"`
 
+	LinuxDoConnectEnabled                bool   `json:"linuxdo_connect_enabled"`
+	LinuxDoConnectClientID               string `json:"linuxdo_connect_client_id"`
+	LinuxDoConnectClientSecretConfigured bool   `json:"linuxdo_connect_client_secret_configured"`
+	LinuxDoConnectRedirectURL            string `json:"linuxdo_connect_redirect_url"`
+
 	SiteName     string `json:"site_name"`
 	SiteLogo     string `json:"site_logo"`
 	SiteSubtitle string `json:"site_subtitle"`
 	APIBaseURL   string `json:"api_base_url"`
 	ContactInfo  string `json:"contact_info"`
 	DocURL       string `json:"doc_url"`
+	HomeContent  string `json:"home_content"`
 
 	DefaultConcurrency int     `json:"default_concurrency"`
 	DefaultBalance     float64 `json:"default_balance"`
@@ -50,5 +56,7 @@ type PublicSettings struct {
 	APIBaseURL          string `json:"api_base_url"`
 	ContactInfo         string `json:"contact_info"`
 	DocURL              string `json:"doc_url"`
+	HomeContent         string `json:"home_content"`
+	LinuxDoOAuthEnabled bool   `json:"linuxdo_oauth_enabled"`
 	Version             string `json:"version"`
 }

backend/internal/handler/dto/types.go

@@ -20,14 +20,16 @@ type User struct {
 }
 
 type APIKey struct {
-	ID        int64     `json:"id"`
+	ID          int64     `json:"id"`
-	UserID    int64     `json:"user_id"`
+	UserID      int64     `json:"user_id"`
-	Key       string    `json:"key"`
+	Key         string    `json:"key"`
-	Name      string    `json:"name"`
+	Name        string    `json:"name"`
-	GroupID   *int64    `json:"group_id"`
+	GroupID     *int64    `json:"group_id"`
-	Status    string    `json:"status"`
+	Status      string    `json:"status"`
-	CreatedAt time.Time `json:"created_at"`
+	IPWhitelist []string  `json:"ip_whitelist"`
-	UpdatedAt time.Time `json:"updated_at"`
+	IPBlacklist []string  `json:"ip_blacklist"`
+	CreatedAt   time.Time `json:"created_at"`
+	UpdatedAt   time.Time `json:"updated_at"`
 
 	User  *User  `json:"user,omitempty"`
 	Group *Group `json:"group,omitempty"`
@@ -187,6 +189,9 @@ type UsageLog struct {
 	// User-Agent
 	UserAgent *string `json:"user_agent"`
 
+	// IP 地址（仅管理员可见）
+	IPAddress *string `json:"ip_address,omitempty"`
+
 	CreatedAt time.Time `json:"created_at"`
 
 	User         *User             `json:"user,omitempty"`
@@ -245,3 +250,28 @@ type BulkAssignResult struct {
 	Subscriptions []UserSubscription `json:"subscriptions"`
 	Errors        []string           `json:"errors"`
 }
+
+// PromoCode 注册优惠码
+type PromoCode struct {
+	ID          int64      `json:"id"`
+	Code        string     `json:"code"`
+	BonusAmount float64    `json:"bonus_amount"`
+	MaxUses     int        `json:"max_uses"`
+	UsedCount   int        `json:"used_count"`
+	Status      string     `json:"status"`
+	ExpiresAt   *time.Time `json:"expires_at"`
+	Notes       string     `json:"notes"`
+	CreatedAt   time.Time  `json:"created_at"`
+	UpdatedAt   time.Time  `json:"updated_at"`
+}
+
+// PromoCodeUsage 优惠码使用记录
+type PromoCodeUsage struct {
+	ID          int64     `json:"id"`
+	PromoCodeID int64     `json:"promo_code_id"`
+	UserID      int64     `json:"user_id"`
+	BonusAmount float64   `json:"bonus_amount"`
+	UsedAt      time.Time `json:"used_at"`
+
+	User *User `json:"user,omitempty"`
+}

backend/internal/handler/gateway_handler.go

@@ -15,6 +15,7 @@ import (
 	"github.com/Wei-Shaw/sub2api/internal/pkg/antigravity"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/claude"
 	pkgerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ip"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
 	middleware2 "github.com/Wei-Shaw/sub2api/internal/server/middleware"
 	"github.com/Wei-Shaw/sub2api/internal/service"
@@ -114,6 +115,9 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 	// 获取 User-Agent
 	userAgent := c.Request.UserAgent()
 
+	// 获取客户端 IP
+	clientIP := ip.GetClientIP(c)
+
 	// 0. 检查wait队列是否已满
 	maxWait := service.CalculateMaxWait(subject.Concurrency)
 	canWait, err := h.concurrencyHelper.IncrementWaitCount(c.Request.Context(), subject.UserID, maxWait)
@@ -273,7 +277,7 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 			}
 
 			// 异步记录使用量（subscription已在函数开头获取）
-			go func(result *service.ForwardResult, usedAccount *service.Account, ua string) {
+			go func(result *service.ForwardResult, usedAccount *service.Account, ua string, cip string) {
 				ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 				defer cancel()
 				if err := h.gatewayService.RecordUsage(ctx, &service.RecordUsageInput{
@@ -283,10 +287,11 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 					Account:      usedAccount,
 					Subscription: subscription,
 					UserAgent:    ua,
+					IPAddress:    cip,
 				}); err != nil {
 					log.Printf("Record usage failed: %v", err)
 				}
-			}(result, account, userAgent)
+			}(result, account, userAgent, clientIP)
 			return
 		}
 	}
@@ -401,7 +406,7 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 		}
 
 		// 异步记录使用量（subscription已在函数开头获取）
-		go func(result *service.ForwardResult, usedAccount *service.Account, ua string) {
+		go func(result *service.ForwardResult, usedAccount *service.Account, ua string, cip string) {
 			ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 			defer cancel()
 			if err := h.gatewayService.RecordUsage(ctx, &service.RecordUsageInput{
@@ -411,10 +416,11 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 				Account:      usedAccount,
 				Subscription: subscription,
 				UserAgent:    ua,
+				IPAddress:    cip,
 			}); err != nil {
 				log.Printf("Record usage failed: %v", err)
 			}
-		}(result, account, userAgent)
+		}(result, account, userAgent, clientIP)
 		return
 	}
 }

backend/internal/handler/gemini_v1beta_handler.go

@@ -12,6 +12,7 @@ import (
 	"github.com/Wei-Shaw/sub2api/internal/pkg/antigravity"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/gemini"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/googleapi"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ip"
 	"github.com/Wei-Shaw/sub2api/internal/server/middleware"
 	"github.com/Wei-Shaw/sub2api/internal/service"
 
@@ -167,6 +168,9 @@ func (h *GatewayHandler) GeminiV1BetaModels(c *gin.Context) {
 	// 获取 User-Agent
 	userAgent := c.Request.UserAgent()
 
+	// 获取客户端 IP
+	clientIP := ip.GetClientIP(c)
+
 	// For Gemini native API, do not send Claude-style ping frames.
 	geminiConcurrency := NewConcurrencyHelper(h.concurrencyHelper.concurrencyService, SSEPingFormatNone, 0)
 
@@ -307,7 +311,7 @@ func (h *GatewayHandler) GeminiV1BetaModels(c *gin.Context) {
 		}
 
 		// 6) record usage async
-		go func(result *service.ForwardResult, usedAccount *service.Account, ua string) {
+		go func(result *service.ForwardResult, usedAccount *service.Account, ua string, cip string) {
 			ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 			defer cancel()
 			if err := h.gatewayService.RecordUsage(ctx, &service.RecordUsageInput{
@@ -317,10 +321,11 @@ func (h *GatewayHandler) GeminiV1BetaModels(c *gin.Context) {
 				Account:      usedAccount,
 				Subscription: subscription,
 				UserAgent:    ua,
+				IPAddress:    cip,
 			}); err != nil {
 				log.Printf("Record usage failed: %v", err)
 			}
-		}(result, account, userAgent)
+		}(result, account, userAgent, clientIP)
 		return
 	}
 }

backend/internal/handler/handler.go

@@ -16,6 +16,7 @@ type AdminHandlers struct {
 	AntigravityOAuth *admin.AntigravityOAuthHandler
 	Proxy            *admin.ProxyHandler
 	Redeem           *admin.RedeemHandler
+	Promo            *admin.PromoHandler
 	Setting          *admin.SettingHandler
 	System           *admin.SystemHandler
 	Subscription     *admin.SubscriptionHandler

backend/internal/handler/openai_gateway_handler.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ip"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
 	middleware2 "github.com/Wei-Shaw/sub2api/internal/server/middleware"
 	"github.com/Wei-Shaw/sub2api/internal/service"
@@ -94,6 +95,10 @@ func (h *OpenAIGatewayHandler) Responses(c *gin.Context) {
 
 	// For non-Codex CLI requests, set default instructions
 	userAgent := c.GetHeader("User-Agent")
+
+	// 获取客户端 IP
+	clientIP := ip.GetClientIP(c)
+
 	if !openai.IsCodexCLIRequest(userAgent) {
 		reqBody["instructions"] = openai.DefaultInstructions
 		// Re-serialize body
@@ -242,7 +247,7 @@ func (h *OpenAIGatewayHandler) Responses(c *gin.Context) {
 		}
 
 		// Async record usage
-		go func(result *service.OpenAIForwardResult, usedAccount *service.Account, ua string) {
+		go func(result *service.OpenAIForwardResult, usedAccount *service.Account, ua string, cip string) {
 			ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 			defer cancel()
 			if err := h.gatewayService.RecordUsage(ctx, &service.OpenAIRecordUsageInput{
@@ -252,10 +257,11 @@ func (h *OpenAIGatewayHandler) Responses(c *gin.Context) {
 				Account:      usedAccount,
 				Subscription: subscription,
 				UserAgent:    ua,
+				IPAddress:    cip,
 			}); err != nil {
 				log.Printf("Record usage failed: %v", err)
 			}
-		}(result, account, userAgent)
+		}(result, account, userAgent, clientIP)
 		return
 	}
 }

backend/internal/handler/setting_handler.go

@@ -42,6 +42,8 @@ func (h *SettingHandler) GetPublicSettings(c *gin.Context) {
 		APIBaseURL:          settings.APIBaseURL,
 		ContactInfo:         settings.ContactInfo,
 		DocURL:              settings.DocURL,
+		HomeContent:         settings.HomeContent,
+		LinuxDoOAuthEnabled: settings.LinuxDoOAuthEnabled,
 		Version:             h.version,
 	})
 }

backend/internal/handler/wire.go

@@ -19,6 +19,7 @@ func ProvideAdminHandlers(
 	antigravityOAuthHandler *admin.AntigravityOAuthHandler,
 	proxyHandler *admin.ProxyHandler,
 	redeemHandler *admin.RedeemHandler,
+	promoHandler *admin.PromoHandler,
 	settingHandler *admin.SettingHandler,
 	systemHandler *admin.SystemHandler,
 	subscriptionHandler *admin.SubscriptionHandler,
@@ -36,6 +37,7 @@ func ProvideAdminHandlers(
 		AntigravityOAuth: antigravityOAuthHandler,
 		Proxy:            proxyHandler,
 		Redeem:           redeemHandler,
+		Promo:            promoHandler,
 		Setting:          settingHandler,
 		System:           systemHandler,
 		Subscription:     subscriptionHandler,
@@ -105,6 +107,7 @@ var ProviderSet = wire.NewSet(
 	admin.NewAntigravityOAuthHandler,
 	admin.NewProxyHandler,
 	admin.NewRedeemHandler,
+	admin.NewPromoHandler,
 	admin.NewSettingHandler,
 	ProvideSystemHandler,
 	admin.NewSubscriptionHandler,

backend/internal/middleware/rate_limiter.go

@@ -0,0 +1,60 @@
+package middleware
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/redis/go-redis/v9"
+)
+
+// RateLimiter Redis 速率限制器
+type RateLimiter struct {
+	redis  *redis.Client
+	prefix string
+}
+
+// NewRateLimiter 创建速率限制器实例
+func NewRateLimiter(redisClient *redis.Client) *RateLimiter {
+	return &RateLimiter{
+		redis:  redisClient,
+		prefix: "rate_limit:",
+	}
+}
+
+// Limit 返回速率限制中间件
+// key: 限制类型标识
+// limit: 时间窗口内最大请求数
+// window: 时间窗口
+func (r *RateLimiter) Limit(key string, limit int, window time.Duration) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		ip := c.ClientIP()
+		redisKey := r.prefix + key + ":" + ip
+
+		ctx := c.Request.Context()
+
+		// 使用 INCR 原子操作增加计数
+		count, err := r.redis.Incr(ctx, redisKey).Result()
+		if err != nil {
+			// Redis 错误时放行，避免影响正常服务
+			c.Next()
+			return
+		}
+
+		// 首次访问时设置过期时间
+		if count == 1 {
+			r.redis.Expire(ctx, redisKey, window)
+		}
+
+		// 超过限制
+		if count > int64(limit) {
+			c.AbortWithStatusJSON(http.StatusTooManyRequests, gin.H{
+				"error":   "rate limit exceeded",
+				"message": "Too many requests, please try again later",
+			})
+			return
+		}
+
+		c.Next()
+	}
+}

backend/internal/pkg/ctxkey/ctxkey.go

@@ -9,4 +9,6 @@ const (
 	ForcePlatform Key = "ctx_force_platform"
 	// IsClaudeCodeClient 是否为 Claude Code 客户端，由中间件设置
 	IsClaudeCodeClient Key = "ctx_is_claude_code_client"
+	// Group 认证后的分组信息，由 API Key 认证中间件设置
+	Group Key = "ctx_group"
 )

backend/internal/pkg/ip/ip.go

@@ -0,0 +1,168 @@
+// Package ip 提供客户端 IP 地址提取工具。
+package ip
+
+import (
+	"net"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+// GetClientIP 从 Gin Context 中提取客户端真实 IP 地址。
+// 按以下优先级检查 Header：
+// 1. CF-Connecting-IP (Cloudflare)
+// 2. X-Real-IP (Nginx)
+// 3. X-Forwarded-For (取第一个非私有 IP)
+// 4. c.ClientIP() (Gin 内置方法)
+func GetClientIP(c *gin.Context) string {
+	// 1. Cloudflare
+	if ip := c.GetHeader("CF-Connecting-IP"); ip != "" {
+		return normalizeIP(ip)
+	}
+
+	// 2. Nginx X-Real-IP
+	if ip := c.GetHeader("X-Real-IP"); ip != "" {
+		return normalizeIP(ip)
+	}
+
+	// 3. X-Forwarded-For (多个 IP 时取第一个公网 IP)
+	if xff := c.GetHeader("X-Forwarded-For"); xff != "" {
+		ips := strings.Split(xff, ",")
+		for _, ip := range ips {
+			ip = strings.TrimSpace(ip)
+			if ip != "" && !isPrivateIP(ip) {
+				return normalizeIP(ip)
+			}
+		}
+		// 如果都是私有 IP，返回第一个
+		if len(ips) > 0 {
+			return normalizeIP(strings.TrimSpace(ips[0]))
+		}
+	}
+
+	// 4. Gin 内置方法
+	return normalizeIP(c.ClientIP())
+}
+
+// normalizeIP 规范化 IP 地址，去除端口号和空格。
+func normalizeIP(ip string) string {
+	ip = strings.TrimSpace(ip)
+	// 移除端口号（如 "192.168.1.1:8080" -> "192.168.1.1"）
+	if host, _, err := net.SplitHostPort(ip); err == nil {
+		return host
+	}
+	return ip
+}
+
+// isPrivateIP 检查 IP 是否为私有地址。
+func isPrivateIP(ipStr string) bool {
+	ip := net.ParseIP(ipStr)
+	if ip == nil {
+		return false
+	}
+
+	// 私有 IP 范围
+	privateBlocks := []string{
+		"10.0.0.0/8",
+		"172.16.0.0/12",
+		"192.168.0.0/16",
+		"127.0.0.0/8",
+		"::1/128",
+		"fc00::/7",
+	}
+
+	for _, block := range privateBlocks {
+		_, cidr, err := net.ParseCIDR(block)
+		if err != nil {
+			continue
+		}
+		if cidr.Contains(ip) {
+			return true
+		}
+	}
+	return false
+}
+
+// MatchesPattern 检查 IP 是否匹配指定的模式（支持单个 IP 或 CIDR）。
+// pattern 可以是：
+// - 单个 IP: "192.168.1.100"
+// - CIDR 范围: "192.168.1.0/24"
+func MatchesPattern(clientIP, pattern string) bool {
+	ip := net.ParseIP(clientIP)
+	if ip == nil {
+		return false
+	}
+
+	// 尝试解析为 CIDR
+	if strings.Contains(pattern, "/") {
+		_, cidr, err := net.ParseCIDR(pattern)
+		if err != nil {
+			return false
+		}
+		return cidr.Contains(ip)
+	}
+
+	// 作为单个 IP 处理
+	patternIP := net.ParseIP(pattern)
+	if patternIP == nil {
+		return false
+	}
+	return ip.Equal(patternIP)
+}
+
+// MatchesAnyPattern 检查 IP 是否匹配任意一个模式。
+func MatchesAnyPattern(clientIP string, patterns []string) bool {
+	for _, pattern := range patterns {
+		if MatchesPattern(clientIP, pattern) {
+			return true
+		}
+	}
+	return false
+}
+
+// CheckIPRestriction 检查 IP 是否被 API Key 的 IP 限制允许。
+// 返回值：(是否允许, 拒绝原因)
+// 逻辑：
+// 1. 先检查黑名单，如果在黑名单中则直接拒绝
+// 2. 如果白名单不为空，IP 必须在白名单中
+// 3. 如果白名单为空，允许访问（除非被黑名单拒绝）
+func CheckIPRestriction(clientIP string, whitelist, blacklist []string) (bool, string) {
+	// 规范化 IP
+	clientIP = normalizeIP(clientIP)
+	if clientIP == "" {
+		return false, "access denied"
+	}
+
+	// 1. 检查黑名单
+	if len(blacklist) > 0 && MatchesAnyPattern(clientIP, blacklist) {
+		return false, "access denied"
+	}
+
+	// 2. 检查白名单（如果设置了白名单，IP 必须在其中）
+	if len(whitelist) > 0 && !MatchesAnyPattern(clientIP, whitelist) {
+		return false, "access denied"
+	}
+
+	return true, ""
+}
+
+// ValidateIPPattern 验证 IP 或 CIDR 格式是否有效。
+func ValidateIPPattern(pattern string) bool {
+	if strings.Contains(pattern, "/") {
+		_, _, err := net.ParseCIDR(pattern)
+		return err == nil
+	}
+	return net.ParseIP(pattern) != nil
+}
+
+// ValidateIPPatterns 验证多个 IP 或 CIDR 格式。
+// 返回无效的模式列表。
+func ValidateIPPatterns(patterns []string) []string {
+	var invalid []string
+	for _, p := range patterns {
+		if !ValidateIPPattern(p) {
+			invalid = append(invalid, p)
+		}
+	}
+	return invalid
+}

backend/internal/repository/account_repo.go

@@ -675,6 +675,40 @@ func (r *accountRepository) SetRateLimited(ctx context.Context, id int64, resetA
 	return err
 }
 
+func (r *accountRepository) SetAntigravityQuotaScopeLimit(ctx context.Context, id int64, scope service.AntigravityQuotaScope, resetAt time.Time) error {
+	now := time.Now().UTC()
+	payload := map[string]string{
+		"rate_limited_at":     now.Format(time.RFC3339),
+		"rate_limit_reset_at": resetAt.UTC().Format(time.RFC3339),
+	}
+	raw, err := json.Marshal(payload)
+	if err != nil {
+		return err
+	}
+
+	path := "{antigravity_quota_scopes," + string(scope) + "}"
+	client := clientFromContext(ctx, r.client)
+	result, err := client.ExecContext(
+		ctx,
+		"UPDATE accounts SET extra = jsonb_set(COALESCE(extra, '{}'::jsonb), $1::text[], $2::jsonb, true), updated_at = NOW() WHERE id = $3 AND deleted_at IS NULL",
+		path,
+		raw,
+		id,
+	)
+	if err != nil {
+		return err
+	}
+
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if affected == 0 {
+		return service.ErrAccountNotFound
+	}
+	return nil
+}
+
 func (r *accountRepository) SetOverloaded(ctx context.Context, id int64, until time.Time) error {
 	_, err := r.client.Account.Update().
 		Where(dbaccount.IDEQ(id)).
@@ -718,6 +752,27 @@ func (r *accountRepository) ClearRateLimit(ctx context.Context, id int64) error
 	return err
 }
 
+func (r *accountRepository) ClearAntigravityQuotaScopes(ctx context.Context, id int64) error {
+	client := clientFromContext(ctx, r.client)
+	result, err := client.ExecContext(
+		ctx,
+		"UPDATE accounts SET extra = COALESCE(extra, '{}'::jsonb) - 'antigravity_quota_scopes', updated_at = NOW() WHERE id = $1 AND deleted_at IS NULL",
+		id,
+	)
+	if err != nil {
+		return err
+	}
+
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if affected == 0 {
+		return service.ErrAccountNotFound
+	}
+	return nil
+}
+
 func (r *accountRepository) UpdateSessionWindow(ctx context.Context, id int64, start, end *time.Time, status string) error {
 	builder := r.client.Account.Update().
 		Where(dbaccount.IDEQ(id)).
@@ -831,6 +886,11 @@ func (r *accountRepository) BulkUpdate(ctx context.Context, ids []int64, updates
 		args = append(args, *updates.Status)
 		idx++
 	}
+	if updates.Schedulable != nil {
+		setClauses = append(setClauses, "schedulable = $"+itoa(idx))
+		args = append(args, *updates.Schedulable)
+		idx++
+	}
 	// JSONB 需要合并而非覆盖，使用 raw SQL 保持旧行为。
 	if len(updates.Credentials) > 0 {
 		payload, err := json.Marshal(updates.Credentials)

backend/internal/repository/api_key_repo.go

@@ -26,13 +26,21 @@ func (r *apiKeyRepository) activeQuery() *dbent.APIKeyQuery {
 }
 
 func (r *apiKeyRepository) Create(ctx context.Context, key *service.APIKey) error {
-	created, err := r.client.APIKey.Create().
+	builder := r.client.APIKey.Create().
 		SetUserID(key.UserID).
 		SetKey(key.Key).
 		SetName(key.Name).
 		SetStatus(key.Status).
-		SetNillableGroupID(key.GroupID).
+		SetNillableGroupID(key.GroupID)
-		Save(ctx)
+
+	if len(key.IPWhitelist) > 0 {
+		builder.SetIPWhitelist(key.IPWhitelist)
+	}
+	if len(key.IPBlacklist) > 0 {
+		builder.SetIPBlacklist(key.IPBlacklist)
+	}
+
+	created, err := builder.Save(ctx)
 	if err == nil {
 		key.ID = created.ID
 		key.CreatedAt = created.CreatedAt
@@ -108,6 +116,18 @@ func (r *apiKeyRepository) Update(ctx context.Context, key *service.APIKey) erro
 		builder.ClearGroupID()
 	}
 
+	// IP 限制字段
+	if len(key.IPWhitelist) > 0 {
+		builder.SetIPWhitelist(key.IPWhitelist)
+	} else {
+		builder.ClearIPWhitelist()
+	}
+	if len(key.IPBlacklist) > 0 {
+		builder.SetIPBlacklist(key.IPBlacklist)
+	} else {
+		builder.ClearIPBlacklist()
+	}
+
 	affected, err := builder.Save(ctx)
 	if err != nil {
 		return err
@@ -268,14 +288,16 @@ func apiKeyEntityToService(m *dbent.APIKey) *service.APIKey {
 		return nil
 	}
 	out := &service.APIKey{
-		ID:        m.ID,
+		ID:          m.ID,
-		UserID:    m.UserID,
+		UserID:      m.UserID,
-		Key:       m.Key,
+		Key:         m.Key,
-		Name:      m.Name,
+		Name:        m.Name,
-		Status:    m.Status,
+		Status:      m.Status,
-		CreatedAt: m.CreatedAt,
+		IPWhitelist: m.IPWhitelist,
-		UpdatedAt: m.UpdatedAt,
+		IPBlacklist: m.IPBlacklist,
-		GroupID:   m.GroupID,
+		CreatedAt:   m.CreatedAt,
+		UpdatedAt:   m.UpdatedAt,
+		GroupID:     m.GroupID,
 	}
 	if m.Edges.User != nil {
 		out.User = userEntityToService(m.Edges.User)
@@ -317,6 +339,7 @@ func groupEntityToService(g *dbent.Group) *service.Group {
 		RateMultiplier:      g.RateMultiplier,
 		IsExclusive:         g.IsExclusive,
 		Status:              g.Status,
+		Hydrated:            true,
 		SubscriptionType:    g.SubscriptionType,
 		DailyLimitUSD:       g.DailyLimitUsd,
 		WeeklyLimitUSD:      g.WeeklyLimitUsd,

backend/internal/repository/group_repo.go

@@ -60,6 +60,17 @@ func (r *groupRepository) Create(ctx context.Context, groupIn *service.Group) er
 }
 
 func (r *groupRepository) GetByID(ctx context.Context, id int64) (*service.Group, error) {
+	out, err := r.GetByIDLite(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	count, _ := r.GetAccountCount(ctx, out.ID)
+	out.AccountCount = count
+	return out, nil
+}
+
+func (r *groupRepository) GetByIDLite(ctx context.Context, id int64) (*service.Group, error) {
+	// AccountCount is intentionally not loaded here; use GetByID when needed.
 	m, err := r.client.Group.Query().
 		Where(group.IDEQ(id)).
 		Only(ctx)
@@ -67,10 +78,7 @@ func (r *groupRepository) GetByID(ctx context.Context, id int64) (*service.Group
 		return nil, translatePersistenceError(err, service.ErrGroupNotFound, nil)
 	}
 
-	out := groupEntityToService(m)
+	return groupEntityToService(m), nil
-	count, _ := r.GetAccountCount(ctx, out.ID)
-	out.AccountCount = count
-	return out, nil
 }
 
 func (r *groupRepository) Update(ctx context.Context, groupIn *service.Group) error {
@@ -112,10 +120,10 @@ func (r *groupRepository) Delete(ctx context.Context, id int64) error {
 }
 
 func (r *groupRepository) List(ctx context.Context, params pagination.PaginationParams) ([]service.Group, *pagination.PaginationResult, error) {
-	return r.ListWithFilters(ctx, params, "", "", nil)
+	return r.ListWithFilters(ctx, params, "", "", "", nil)
 }
 
-func (r *groupRepository) ListWithFilters(ctx context.Context, params pagination.PaginationParams, platform, status string, isExclusive *bool) ([]service.Group, *pagination.PaginationResult, error) {
+func (r *groupRepository) ListWithFilters(ctx context.Context, params pagination.PaginationParams, platform, status, search string, isExclusive *bool) ([]service.Group, *pagination.PaginationResult, error) {
 	q := r.client.Group.Query()
 
 	if platform != "" {
@@ -124,6 +132,12 @@ func (r *groupRepository) ListWithFilters(ctx context.Context, params pagination
 	if status != "" {
 		q = q.Where(group.StatusEQ(status))
 	}
+	if search != "" {
+		q = q.Where(group.Or(
+			group.NameContainsFold(search),
+			group.DescriptionContainsFold(search),
+		))
+	}
 	if isExclusive != nil {
 		q = q.Where(group.IsExclusiveEQ(*isExclusive))
 	}

backend/internal/repository/group_repo_integration_test.go

@@ -4,6 +4,8 @@ package repository
 
 import (
 	"context"
+	"database/sql"
+	"errors"
 	"testing"
 
 	dbent "github.com/Wei-Shaw/sub2api/ent"
@@ -19,6 +21,20 @@ type GroupRepoSuite struct {
 	repo *groupRepository
 }
 
+type forbidSQLExecutor struct {
+	called bool
+}
+
+func (s *forbidSQLExecutor) ExecContext(ctx context.Context, query string, args ...any) (sql.Result, error) {
+	s.called = true
+	return nil, errors.New("unexpected sql exec")
+}
+
+func (s *forbidSQLExecutor) QueryContext(ctx context.Context, query string, args ...any) (*sql.Rows, error) {
+	s.called = true
+	return nil, errors.New("unexpected sql query")
+}
+
 func (s *GroupRepoSuite) SetupTest() {
 	s.ctx = context.Background()
 	tx := testEntTx(s.T())
@@ -57,6 +73,26 @@ func (s *GroupRepoSuite) TestGetByID_NotFound() {
 	s.Require().ErrorIs(err, service.ErrGroupNotFound)
 }
 
+func (s *GroupRepoSuite) TestGetByIDLite_DoesNotUseAccountCount() {
+	group := &service.Group{
+		Name:             "lite-group",
+		Platform:         service.PlatformAnthropic,
+		RateMultiplier:   1.0,
+		IsExclusive:      false,
+		Status:           service.StatusActive,
+		SubscriptionType: service.SubscriptionTypeStandard,
+	}
+	s.Require().NoError(s.repo.Create(s.ctx, group))
+
+	spy := &forbidSQLExecutor{}
+	repo := newGroupRepositoryWithSQL(s.tx.Client(), spy)
+
+	got, err := repo.GetByIDLite(s.ctx, group.ID)
+	s.Require().NoError(err)
+	s.Require().Equal(group.ID, got.ID)
+	s.Require().False(spy.called, "expected no direct sql executor usage")
+}
+
 func (s *GroupRepoSuite) TestUpdate() {
 	group := &service.Group{
 		Name:             "original",
@@ -131,6 +167,7 @@ func (s *GroupRepoSuite) TestListWithFilters_Platform() {
 		pagination.PaginationParams{Page: 1, PageSize: 10},
 		service.PlatformOpenAI,
 		"",
+		"",
 		nil,
 	)
 	s.Require().NoError(err, "ListWithFilters base")
@@ -152,7 +189,7 @@ func (s *GroupRepoSuite) TestListWithFilters_Platform() {
 		SubscriptionType: service.SubscriptionTypeStandard,
 	}))
 
-	groups, _, err := s.repo.ListWithFilters(s.ctx, pagination.PaginationParams{Page: 1, PageSize: 10}, service.PlatformOpenAI, "", nil)
+	groups, _, err := s.repo.ListWithFilters(s.ctx, pagination.PaginationParams{Page: 1, PageSize: 10}, service.PlatformOpenAI, "", "", nil)
 	s.Require().NoError(err)
 	s.Require().Len(groups, len(baseGroups)+1)
 	// Verify all groups are OpenAI platform
@@ -179,7 +216,7 @@ func (s *GroupRepoSuite) TestListWithFilters_Status() {
 		SubscriptionType: service.SubscriptionTypeStandard,
 	}))
 
-	groups, _, err := s.repo.ListWithFilters(s.ctx, pagination.PaginationParams{Page: 1, PageSize: 10}, "", service.StatusDisabled, nil)
+	groups, _, err := s.repo.ListWithFilters(s.ctx, pagination.PaginationParams{Page: 1, PageSize: 10}, "", service.StatusDisabled, "", nil)
 	s.Require().NoError(err)
 	s.Require().Len(groups, 1)
 	s.Require().Equal(service.StatusDisabled, groups[0].Status)
@@ -204,12 +241,117 @@ func (s *GroupRepoSuite) TestListWithFilters_IsExclusive() {
 	}))
 
 	isExclusive := true
-	groups, _, err := s.repo.ListWithFilters(s.ctx, pagination.PaginationParams{Page: 1, PageSize: 10}, "", "", &isExclusive)
+	groups, _, err := s.repo.ListWithFilters(s.ctx, pagination.PaginationParams{Page: 1, PageSize: 10}, "", "", "", &isExclusive)
 	s.Require().NoError(err)
 	s.Require().Len(groups, 1)
 	s.Require().True(groups[0].IsExclusive)
 }
 
+func (s *GroupRepoSuite) TestListWithFilters_Search() {
+	newRepo := func() (*groupRepository, context.Context) {
+		tx := testEntTx(s.T())
+		return newGroupRepositoryWithSQL(tx.Client(), tx), context.Background()
+	}
+
+	containsID := func(groups []service.Group, id int64) bool {
+		for i := range groups {
+			if groups[i].ID == id {
+				return true
+			}
+		}
+		return false
+	}
+
+	mustCreate := func(repo *groupRepository, ctx context.Context, g *service.Group) *service.Group {
+		s.Require().NoError(repo.Create(ctx, g))
+		s.Require().NotZero(g.ID)
+		return g
+	}
+
+	newGroup := func(name string) *service.Group {
+		return &service.Group{
+			Name:             name,
+			Platform:         service.PlatformAnthropic,
+			RateMultiplier:   1.0,
+			IsExclusive:      false,
+			Status:           service.StatusActive,
+			SubscriptionType: service.SubscriptionTypeStandard,
+		}
+	}
+
+	s.Run("search_name_should_match", func() {
+		repo, ctx := newRepo()
+
+		target := mustCreate(repo, ctx, newGroup("it-group-search-name-target"))
+		other := mustCreate(repo, ctx, newGroup("it-group-search-name-other"))
+
+		groups, _, err := repo.ListWithFilters(ctx, pagination.PaginationParams{Page: 1, PageSize: 50}, "", "", "name-target", nil)
+		s.Require().NoError(err)
+		s.Require().True(containsID(groups, target.ID), "expected target group to match by name")
+		s.Require().False(containsID(groups, other.ID), "expected other group to be filtered out")
+	})
+
+	s.Run("search_description_should_match", func() {
+		repo, ctx := newRepo()
+
+		target := newGroup("it-group-search-desc-target")
+		target.Description = "something about desc-needle in here"
+		target = mustCreate(repo, ctx, target)
+
+		other := newGroup("it-group-search-desc-other")
+		other.Description = "nothing to see here"
+		other = mustCreate(repo, ctx, other)
+
+		groups, _, err := repo.ListWithFilters(ctx, pagination.PaginationParams{Page: 1, PageSize: 50}, "", "", "desc-needle", nil)
+		s.Require().NoError(err)
+		s.Require().True(containsID(groups, target.ID), "expected target group to match by description")
+		s.Require().False(containsID(groups, other.ID), "expected other group to be filtered out")
+	})
+
+	s.Run("search_nonexistent_should_return_empty", func() {
+		repo, ctx := newRepo()
+
+		_ = mustCreate(repo, ctx, newGroup("it-group-search-nonexistent-baseline"))
+
+		search := s.T().Name() + "__no_such_group__"
+		groups, _, err := repo.ListWithFilters(ctx, pagination.PaginationParams{Page: 1, PageSize: 50}, "", "", search, nil)
+		s.Require().NoError(err)
+		s.Require().Empty(groups)
+	})
+
+	s.Run("search_should_be_case_insensitive", func() {
+		repo, ctx := newRepo()
+
+		target := mustCreate(repo, ctx, newGroup("MiXeDCaSe-Needle"))
+		other := mustCreate(repo, ctx, newGroup("it-group-search-case-other"))
+
+		groups, _, err := repo.ListWithFilters(ctx, pagination.PaginationParams{Page: 1, PageSize: 50}, "", "", "mixedcase-needle", nil)
+		s.Require().NoError(err)
+		s.Require().True(containsID(groups, target.ID), "expected case-insensitive match")
+		s.Require().False(containsID(groups, other.ID), "expected other group to be filtered out")
+	})
+
+	s.Run("search_should_escape_like_wildcards", func() {
+		repo, ctx := newRepo()
+
+		percentTarget := mustCreate(repo, ctx, newGroup("it-group-search-100%-target"))
+		percentOther := mustCreate(repo, ctx, newGroup("it-group-search-100X-other"))
+
+		groups, _, err := repo.ListWithFilters(ctx, pagination.PaginationParams{Page: 1, PageSize: 50}, "", "", "100%", nil)
+		s.Require().NoError(err)
+		s.Require().True(containsID(groups, percentTarget.ID), "expected literal %% match")
+		s.Require().False(containsID(groups, percentOther.ID), "expected %% not to act as wildcard")
+
+		underscoreTarget := mustCreate(repo, ctx, newGroup("it-group-search-ab_cd-target"))
+		underscoreOther := mustCreate(repo, ctx, newGroup("it-group-search-abXcd-other"))
+
+		groups, _, err = repo.ListWithFilters(ctx, pagination.PaginationParams{Page: 1, PageSize: 50}, "", "", "ab_cd", nil)
+		s.Require().NoError(err)
+		s.Require().True(containsID(groups, underscoreTarget.ID), "expected literal _ match")
+		s.Require().False(containsID(groups, underscoreOther.ID), "expected _ not to act as wildcard")
+	})
+}
+
 func (s *GroupRepoSuite) TestListWithFilters_AccountCount() {
 	g1 := &service.Group{
 		Name:             "g1",
@@ -244,7 +386,7 @@ func (s *GroupRepoSuite) TestListWithFilters_AccountCount() {
 	s.Require().NoError(err)
 
 	isExclusive := true
-	groups, page, err := s.repo.ListWithFilters(s.ctx, pagination.PaginationParams{Page: 1, PageSize: 10}, service.PlatformAnthropic, service.StatusActive, &isExclusive)
+	groups, page, err := s.repo.ListWithFilters(s.ctx, pagination.PaginationParams{Page: 1, PageSize: 10}, service.PlatformAnthropic, service.StatusActive, "", &isExclusive)
 	s.Require().NoError(err, "ListWithFilters")
 	s.Require().Equal(int64(1), page.Total)
 	s.Require().Len(groups, 1)

backend/internal/repository/promo_code_repo.go

@@ -0,0 +1,273 @@
+package repository
+
+import (
+	"context"
+
+	dbent "github.com/Wei-Shaw/sub2api/ent"
+	"github.com/Wei-Shaw/sub2api/ent/promocode"
+	"github.com/Wei-Shaw/sub2api/ent/promocodeusage"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+)
+
+type promoCodeRepository struct {
+	client *dbent.Client
+}
+
+func NewPromoCodeRepository(client *dbent.Client) service.PromoCodeRepository {
+	return &promoCodeRepository{client: client}
+}
+
+func (r *promoCodeRepository) Create(ctx context.Context, code *service.PromoCode) error {
+	client := clientFromContext(ctx, r.client)
+	builder := client.PromoCode.Create().
+		SetCode(code.Code).
+		SetBonusAmount(code.BonusAmount).
+		SetMaxUses(code.MaxUses).
+		SetUsedCount(code.UsedCount).
+		SetStatus(code.Status).
+		SetNotes(code.Notes)
+
+	if code.ExpiresAt != nil {
+		builder.SetExpiresAt(*code.ExpiresAt)
+	}
+
+	created, err := builder.Save(ctx)
+	if err != nil {
+		return err
+	}
+
+	code.ID = created.ID
+	code.CreatedAt = created.CreatedAt
+	code.UpdatedAt = created.UpdatedAt
+	return nil
+}
+
+func (r *promoCodeRepository) GetByID(ctx context.Context, id int64) (*service.PromoCode, error) {
+	m, err := r.client.PromoCode.Query().
+		Where(promocode.IDEQ(id)).
+		Only(ctx)
+	if err != nil {
+		if dbent.IsNotFound(err) {
+			return nil, service.ErrPromoCodeNotFound
+		}
+		return nil, err
+	}
+	return promoCodeEntityToService(m), nil
+}
+
+func (r *promoCodeRepository) GetByCode(ctx context.Context, code string) (*service.PromoCode, error) {
+	m, err := r.client.PromoCode.Query().
+		Where(promocode.CodeEqualFold(code)).
+		Only(ctx)
+	if err != nil {
+		if dbent.IsNotFound(err) {
+			return nil, service.ErrPromoCodeNotFound
+		}
+		return nil, err
+	}
+	return promoCodeEntityToService(m), nil
+}
+
+func (r *promoCodeRepository) GetByCodeForUpdate(ctx context.Context, code string) (*service.PromoCode, error) {
+	client := clientFromContext(ctx, r.client)
+	m, err := client.PromoCode.Query().
+		Where(promocode.CodeEqualFold(code)).
+		ForUpdate().
+		Only(ctx)
+	if err != nil {
+		if dbent.IsNotFound(err) {
+			return nil, service.ErrPromoCodeNotFound
+		}
+		return nil, err
+	}
+	return promoCodeEntityToService(m), nil
+}
+
+func (r *promoCodeRepository) Update(ctx context.Context, code *service.PromoCode) error {
+	client := clientFromContext(ctx, r.client)
+	builder := client.PromoCode.UpdateOneID(code.ID).
+		SetCode(code.Code).
+		SetBonusAmount(code.BonusAmount).
+		SetMaxUses(code.MaxUses).
+		SetUsedCount(code.UsedCount).
+		SetStatus(code.Status).
+		SetNotes(code.Notes)
+
+	if code.ExpiresAt != nil {
+		builder.SetExpiresAt(*code.ExpiresAt)
+	} else {
+		builder.ClearExpiresAt()
+	}
+
+	updated, err := builder.Save(ctx)
+	if err != nil {
+		if dbent.IsNotFound(err) {
+			return service.ErrPromoCodeNotFound
+		}
+		return err
+	}
+
+	code.UpdatedAt = updated.UpdatedAt
+	return nil
+}
+
+func (r *promoCodeRepository) Delete(ctx context.Context, id int64) error {
+	client := clientFromContext(ctx, r.client)
+	_, err := client.PromoCode.Delete().Where(promocode.IDEQ(id)).Exec(ctx)
+	return err
+}
+
+func (r *promoCodeRepository) List(ctx context.Context, params pagination.PaginationParams) ([]service.PromoCode, *pagination.PaginationResult, error) {
+	return r.ListWithFilters(ctx, params, "", "")
+}
+
+func (r *promoCodeRepository) ListWithFilters(ctx context.Context, params pagination.PaginationParams, status, search string) ([]service.PromoCode, *pagination.PaginationResult, error) {
+	q := r.client.PromoCode.Query()
+
+	if status != "" {
+		q = q.Where(promocode.StatusEQ(status))
+	}
+	if search != "" {
+		q = q.Where(promocode.CodeContainsFold(search))
+	}
+
+	total, err := q.Count(ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	codes, err := q.
+		Offset(params.Offset()).
+		Limit(params.Limit()).
+		Order(dbent.Desc(promocode.FieldID)).
+		All(ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	outCodes := promoCodeEntitiesToService(codes)
+
+	return outCodes, paginationResultFromTotal(int64(total), params), nil
+}
+
+func (r *promoCodeRepository) CreateUsage(ctx context.Context, usage *service.PromoCodeUsage) error {
+	client := clientFromContext(ctx, r.client)
+	created, err := client.PromoCodeUsage.Create().
+		SetPromoCodeID(usage.PromoCodeID).
+		SetUserID(usage.UserID).
+		SetBonusAmount(usage.BonusAmount).
+		SetUsedAt(usage.UsedAt).
+		Save(ctx)
+	if err != nil {
+		return err
+	}
+
+	usage.ID = created.ID
+	return nil
+}
+
+func (r *promoCodeRepository) GetUsageByPromoCodeAndUser(ctx context.Context, promoCodeID, userID int64) (*service.PromoCodeUsage, error) {
+	m, err := r.client.PromoCodeUsage.Query().
+		Where(
+			promocodeusage.PromoCodeIDEQ(promoCodeID),
+			promocodeusage.UserIDEQ(userID),
+		).
+		Only(ctx)
+	if err != nil {
+		if dbent.IsNotFound(err) {
+			return nil, nil
+		}
+		return nil, err
+	}
+	return promoCodeUsageEntityToService(m), nil
+}
+
+func (r *promoCodeRepository) ListUsagesByPromoCode(ctx context.Context, promoCodeID int64, params pagination.PaginationParams) ([]service.PromoCodeUsage, *pagination.PaginationResult, error) {
+	q := r.client.PromoCodeUsage.Query().
+		Where(promocodeusage.PromoCodeIDEQ(promoCodeID))
+
+	total, err := q.Count(ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	usages, err := q.
+		WithUser().
+		Offset(params.Offset()).
+		Limit(params.Limit()).
+		Order(dbent.Desc(promocodeusage.FieldID)).
+		All(ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	outUsages := promoCodeUsageEntitiesToService(usages)
+
+	return outUsages, paginationResultFromTotal(int64(total), params), nil
+}
+
+func (r *promoCodeRepository) IncrementUsedCount(ctx context.Context, id int64) error {
+	client := clientFromContext(ctx, r.client)
+	_, err := client.PromoCode.UpdateOneID(id).
+		AddUsedCount(1).
+		Save(ctx)
+	return err
+}
+
+// Entity to Service conversions
+
+func promoCodeEntityToService(m *dbent.PromoCode) *service.PromoCode {
+	if m == nil {
+		return nil
+	}
+	return &service.PromoCode{
+		ID:          m.ID,
+		Code:        m.Code,
+		BonusAmount: m.BonusAmount,
+		MaxUses:     m.MaxUses,
+		UsedCount:   m.UsedCount,
+		Status:      m.Status,
+		ExpiresAt:   m.ExpiresAt,
+		Notes:       derefString(m.Notes),
+		CreatedAt:   m.CreatedAt,
+		UpdatedAt:   m.UpdatedAt,
+	}
+}
+
+func promoCodeEntitiesToService(models []*dbent.PromoCode) []service.PromoCode {
+	out := make([]service.PromoCode, 0, len(models))
+	for i := range models {
+		if s := promoCodeEntityToService(models[i]); s != nil {
+			out = append(out, *s)
+		}
+	}
+	return out
+}
+
+func promoCodeUsageEntityToService(m *dbent.PromoCodeUsage) *service.PromoCodeUsage {
+	if m == nil {
+		return nil
+	}
+	out := &service.PromoCodeUsage{
+		ID:          m.ID,
+		PromoCodeID: m.PromoCodeID,
+		UserID:      m.UserID,
+		BonusAmount: m.BonusAmount,
+		UsedAt:      m.UsedAt,
+	}
+	if m.Edges.User != nil {
+		out.User = userEntityToService(m.Edges.User)
+	}
+	return out
+}
+
+func promoCodeUsageEntitiesToService(models []*dbent.PromoCodeUsage) []service.PromoCodeUsage {
+	out := make([]service.PromoCodeUsage, 0, len(models))
+	for i := range models {
+		if s := promoCodeUsageEntityToService(models[i]); s != nil {
+			out = append(out, *s)
+		}
+	}
+	return out
+}

backend/internal/repository/usage_log_repo.go

@@ -22,7 +22,7 @@ import (
 	"github.com/lib/pq"
 )
 
-const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, billing_type, stream, duration_ms, first_token_ms, user_agent, image_count, image_size, created_at"
+const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, billing_type, stream, duration_ms, first_token_ms, user_agent, ip_address, image_count, image_size, created_at"
 
 type usageLogRepository struct {
 	client *dbent.Client
@@ -110,6 +110,7 @@ func (r *usageLogRepository) Create(ctx context.Context, log *service.UsageLog)
 			duration_ms,
 			first_token_ms,
 			user_agent,
+			ip_address,
 			image_count,
 			image_size,
 			created_at
@@ -119,7 +120,7 @@ func (r *usageLogRepository) Create(ctx context.Context, log *service.UsageLog)
 			$8, $9, $10, $11,
 			$12, $13,
 			$14, $15, $16, $17, $18, $19,
-		$20, $21, $22, $23, $24, $25, $26, $27, $28
+			$20, $21, $22, $23, $24, $25, $26, $27, $28, $29
 		)
 		ON CONFLICT (request_id, api_key_id) DO NOTHING
 		RETURNING id, created_at
@@ -130,6 +131,7 @@ func (r *usageLogRepository) Create(ctx context.Context, log *service.UsageLog)
 	duration := nullInt(log.DurationMs)
 	firstToken := nullInt(log.FirstTokenMs)
 	userAgent := nullString(log.UserAgent)
+	ipAddress := nullString(log.IPAddress)
 	imageSize := nullString(log.ImageSize)
 
 	var requestIDArg any
@@ -163,6 +165,7 @@ func (r *usageLogRepository) Create(ctx context.Context, log *service.UsageLog)
 		duration,
 		firstToken,
 		userAgent,
+		ipAddress,
 		log.ImageCount,
 		imageSize,
 		createdAt,
@@ -1873,6 +1876,7 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		durationMs          sql.NullInt64
 		firstTokenMs        sql.NullInt64
 		userAgent           sql.NullString
+		ipAddress           sql.NullString
 		imageCount          int
 		imageSize           sql.NullString
 		createdAt           time.Time
@@ -1905,6 +1909,7 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		&durationMs,
 		&firstTokenMs,
 		&userAgent,
+		&ipAddress,
 		&imageCount,
 		&imageSize,
 		&createdAt,
@@ -1959,6 +1964,9 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 	if userAgent.Valid {
 		log.UserAgent = &userAgent.String
 	}
+	if ipAddress.Valid {
+		log.IPAddress = &ipAddress.String
+	}
 	if imageSize.Valid {
 		log.ImageSize = &imageSize.String
 	}

backend/internal/repository/wire.go

@@ -45,6 +45,7 @@ var ProviderSet = wire.NewSet(
 	NewAccountRepository,
 	NewProxyRepository,
 	NewRedeemCodeRepository,
+	NewPromoCodeRepository,
 	NewUsageLogRepository,
 	NewSettingRepository,
 	NewUserSubscriptionRepository,

backend/internal/server/api_contract_test.go

@@ -82,6 +82,8 @@ func TestAPIContracts(t *testing.T) {
 					"name": "Key One",
 					"group_id": null,
 					"status": "active",
+					"ip_whitelist": null,
+					"ip_blacklist": null,
 					"created_at": "2025-01-02T03:04:05Z",
 					"updated_at": "2025-01-02T03:04:05Z"
 				}
@@ -116,6 +118,8 @@ func TestAPIContracts(t *testing.T) {
 							"name": "Key One",
 							"group_id": null,
 							"status": "active",
+							"ip_whitelist": null,
+							"ip_blacklist": null,
 							"created_at": "2025-01-02T03:04:05Z",
 							"updated_at": "2025-01-02T03:04:05Z"
 						}
@@ -304,6 +308,10 @@ func TestAPIContracts(t *testing.T) {
 					"turnstile_enabled": true,
 					"turnstile_site_key": "site-key",
 					"turnstile_secret_key_configured": true,
+					"linuxdo_connect_enabled": false,
+					"linuxdo_connect_client_id": "",
+					"linuxdo_connect_client_secret_configured": false,
+					"linuxdo_connect_redirect_url": "",
 					"site_name": "Sub2API",
 					"site_logo": "",
 					"site_subtitle": "Subtitle",
@@ -318,7 +326,8 @@ func TestAPIContracts(t *testing.T) {
 					"fallback_model_gemini": "gemini-2.5-pro",
 					"fallback_model_openai": "gpt-4o",
 					"enable_identity_patch": true,
-					"identity_patch_prompt": ""
+					"identity_patch_prompt": "",
+					"home_content": ""
 				}
 			}`,
 		},
@@ -390,7 +399,7 @@ func newContractDeps(t *testing.T) *contractDeps {
 	settingRepo := newStubSettingRepo()
 	settingService := service.NewSettingService(settingRepo, cfg)
 
-	authHandler := handler.NewAuthHandler(cfg, nil, userService)
+	authHandler := handler.NewAuthHandler(cfg, nil, userService, settingService, nil)
 	apiKeyHandler := handler.NewAPIKeyHandler(apiKeyService)
 	usageHandler := handler.NewUsageHandler(usageService, apiKeyService)
 	adminSettingHandler := adminhandler.NewSettingHandler(settingService, nil, nil)
@@ -567,6 +576,10 @@ func (stubGroupRepo) GetByID(ctx context.Context, id int64) (*service.Group, err
 	return nil, service.ErrGroupNotFound
 }
 
+func (stubGroupRepo) GetByIDLite(ctx context.Context, id int64) (*service.Group, error) {
+	return nil, service.ErrGroupNotFound
+}
+
 func (stubGroupRepo) Update(ctx context.Context, group *service.Group) error {
 	return errors.New("not implemented")
 }
@@ -583,7 +596,7 @@ func (stubGroupRepo) List(ctx context.Context, params pagination.PaginationParam
 	return nil, nil, errors.New("not implemented")
 }
 
-func (stubGroupRepo) ListWithFilters(ctx context.Context, params pagination.PaginationParams, platform, status string, isExclusive *bool) ([]service.Group, *pagination.PaginationResult, error) {
+func (stubGroupRepo) ListWithFilters(ctx context.Context, params pagination.PaginationParams, platform, status, search string, isExclusive *bool) ([]service.Group, *pagination.PaginationResult, error) {
 	return nil, nil, errors.New("not implemented")
 }
 

backend/internal/server/http.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"github.com/google/wire"
+	"github.com/redis/go-redis/v9"
 )
 
 // ProviderSet 提供服务器层的依赖
@@ -30,6 +31,8 @@ func ProvideRouter(
 	apiKeyAuth middleware2.APIKeyAuthMiddleware,
 	apiKeyService *service.APIKeyService,
 	subscriptionService *service.SubscriptionService,
+	settingService *service.SettingService,
+	redisClient *redis.Client,
 ) *gin.Engine {
 	if cfg.Server.Mode == "release" {
 		gin.SetMode(gin.ReleaseMode)
@@ -47,7 +50,7 @@ func ProvideRouter(
 		}
 	}
 
-	return SetupRouter(r, handlers, jwtAuth, adminAuth, apiKeyAuth, apiKeyService, subscriptionService, cfg)
+	return SetupRouter(r, handlers, jwtAuth, adminAuth, apiKeyAuth, apiKeyService, subscriptionService, settingService, cfg, redisClient)
 }
 
 // ProvideHTTPServer 提供 HTTP 服务器

backend/internal/server/middleware/api_key_auth.go

@@ -1,11 +1,14 @@
 package middleware
 
 import (
+	"context"
 	"errors"
 	"log"
 	"strings"
 
 	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ctxkey"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ip"
 	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
@@ -71,6 +74,17 @@ func apiKeyAuthWithSubscription(apiKeyService *service.APIKeyService, subscripti
 			return
 		}
 
+		// 检查 IP 限制（白名单/黑名单）
+		// 注意：错误信息故意模糊，避免暴露具体的 IP 限制机制
+		if len(apiKey.IPWhitelist) > 0 || len(apiKey.IPBlacklist) > 0 {
+			clientIP := ip.GetClientIP(c)
+			allowed, _ := ip.CheckIPRestriction(clientIP, apiKey.IPWhitelist, apiKey.IPBlacklist)
+			if !allowed {
+				AbortWithError(c, 403, "ACCESS_DENIED", "Access denied")
+				return
+			}
+		}
+
 		// 检查关联的用户
 		if apiKey.User == nil {
 			AbortWithError(c, 401, "USER_NOT_FOUND", "User associated with API key not found")
@@ -91,6 +105,7 @@ func apiKeyAuthWithSubscription(apiKeyService *service.APIKeyService, subscripti
 				Concurrency: apiKey.User.Concurrency,
 			})
 			c.Set(string(ContextKeyUserRole), apiKey.User.Role)
+			setGroupContext(c, apiKey.Group)
 			c.Next()
 			return
 		}
@@ -149,6 +164,7 @@ func apiKeyAuthWithSubscription(apiKeyService *service.APIKeyService, subscripti
 			Concurrency: apiKey.User.Concurrency,
 		})
 		c.Set(string(ContextKeyUserRole), apiKey.User.Role)
+		setGroupContext(c, apiKey.Group)
 
 		c.Next()
 	}
@@ -173,3 +189,14 @@ func GetSubscriptionFromContext(c *gin.Context) (*service.UserSubscription, bool
 	subscription, ok := value.(*service.UserSubscription)
 	return subscription, ok
 }
+
+func setGroupContext(c *gin.Context, group *service.Group) {
+	if !service.IsGroupContextValid(group) {
+		return
+	}
+	if existing, ok := c.Request.Context().Value(ctxkey.Group).(*service.Group); ok && existing != nil && existing.ID == group.ID && service.IsGroupContextValid(existing) {
+		return
+	}
+	ctx := context.WithValue(c.Request.Context(), ctxkey.Group, group)
+	c.Request = c.Request.WithContext(ctx)
+}

backend/internal/server/middleware/api_key_auth_google.go

@@ -63,6 +63,7 @@ func APIKeyAuthWithSubscriptionGoogle(apiKeyService *service.APIKeyService, subs
 				Concurrency: apiKey.User.Concurrency,
 			})
 			c.Set(string(ContextKeyUserRole), apiKey.User.Role)
+			setGroupContext(c, apiKey.Group)
 			c.Next()
 			return
 		}
@@ -102,6 +103,7 @@ func APIKeyAuthWithSubscriptionGoogle(apiKeyService *service.APIKeyService, subs
 			Concurrency: apiKey.User.Concurrency,
 		})
 		c.Set(string(ContextKeyUserRole), apiKey.User.Role)
+		setGroupContext(c, apiKey.Group)
 		c.Next()
 	}
 }

backend/internal/server/middleware/api_key_auth_google_test.go

@@ -9,6 +9,7 @@ import (
 	"testing"
 
 	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ctxkey"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 	"github.com/Wei-Shaw/sub2api/internal/service"
 
@@ -133,6 +134,70 @@ func TestApiKeyAuthWithSubscriptionGoogle_QueryApiKeyRejected(t *testing.T) {
 	require.Equal(t, "INVALID_ARGUMENT", resp.Error.Status)
 }
 
+func TestApiKeyAuthWithSubscriptionGoogleSetsGroupContext(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	group := &service.Group{
+		ID:       99,
+		Name:     "g1",
+		Status:   service.StatusActive,
+		Platform: service.PlatformGemini,
+		Hydrated: true,
+	}
+	user := &service.User{
+		ID:          7,
+		Role:        service.RoleUser,
+		Status:      service.StatusActive,
+		Balance:     10,
+		Concurrency: 3,
+	}
+	apiKey := &service.APIKey{
+		ID:     100,
+		UserID: user.ID,
+		Key:    "test-key",
+		Status: service.StatusActive,
+		User:   user,
+		Group:  group,
+	}
+	apiKey.GroupID = &group.ID
+
+	apiKeyService := service.NewAPIKeyService(
+		fakeAPIKeyRepo{
+			getByKey: func(ctx context.Context, key string) (*service.APIKey, error) {
+				if key != apiKey.Key {
+					return nil, service.ErrAPIKeyNotFound
+				}
+				clone := *apiKey
+				return &clone, nil
+			},
+		},
+		nil,
+		nil,
+		nil,
+		nil,
+		&config.Config{RunMode: config.RunModeSimple},
+	)
+
+	cfg := &config.Config{RunMode: config.RunModeSimple}
+	r := gin.New()
+	r.Use(APIKeyAuthWithSubscriptionGoogle(apiKeyService, nil, cfg))
+	r.GET("/v1beta/test", func(c *gin.Context) {
+		groupFromCtx, ok := c.Request.Context().Value(ctxkey.Group).(*service.Group)
+		if !ok || groupFromCtx == nil || groupFromCtx.ID != group.ID {
+			c.JSON(http.StatusInternalServerError, gin.H{"ok": false})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"ok": true})
+	})
+
+	req := httptest.NewRequest(http.MethodGet, "/v1beta/test", nil)
+	req.Header.Set("x-api-key", apiKey.Key)
+	rec := httptest.NewRecorder()
+	r.ServeHTTP(rec, req)
+
+	require.Equal(t, http.StatusOK, rec.Code)
+}
+
 func TestApiKeyAuthWithSubscriptionGoogle_QueryKeyAllowedOnV1Beta(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 

backend/internal/server/middleware/api_key_auth_test.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ctxkey"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 	"github.com/Wei-Shaw/sub2api/internal/service"
 	"github.com/gin-gonic/gin"
@@ -25,6 +26,7 @@ func TestSimpleModeBypassesQuotaCheck(t *testing.T) {
 		ID:               42,
 		Name:             "sub",
 		Status:           service.StatusActive,
+		Hydrated:         true,
 		SubscriptionType: service.SubscriptionTypeSubscription,
 		DailyLimitUSD:    &limit,
 	}
@@ -110,6 +112,129 @@ func TestSimpleModeBypassesQuotaCheck(t *testing.T) {
 	})
 }
 
+func TestAPIKeyAuthSetsGroupContext(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	group := &service.Group{
+		ID:       101,
+		Name:     "g1",
+		Status:   service.StatusActive,
+		Platform: service.PlatformAnthropic,
+		Hydrated: true,
+	}
+	user := &service.User{
+		ID:          7,
+		Role:        service.RoleUser,
+		Status:      service.StatusActive,
+		Balance:     10,
+		Concurrency: 3,
+	}
+	apiKey := &service.APIKey{
+		ID:     100,
+		UserID: user.ID,
+		Key:    "test-key",
+		Status: service.StatusActive,
+		User:   user,
+		Group:  group,
+	}
+	apiKey.GroupID = &group.ID
+
+	apiKeyRepo := &stubApiKeyRepo{
+		getByKey: func(ctx context.Context, key string) (*service.APIKey, error) {
+			if key != apiKey.Key {
+				return nil, service.ErrAPIKeyNotFound
+			}
+			clone := *apiKey
+			return &clone, nil
+		},
+	}
+
+	cfg := &config.Config{RunMode: config.RunModeSimple}
+	apiKeyService := service.NewAPIKeyService(apiKeyRepo, nil, nil, nil, nil, cfg)
+	router := gin.New()
+	router.Use(gin.HandlerFunc(NewAPIKeyAuthMiddleware(apiKeyService, nil, cfg)))
+	router.GET("/t", func(c *gin.Context) {
+		groupFromCtx, ok := c.Request.Context().Value(ctxkey.Group).(*service.Group)
+		if !ok || groupFromCtx == nil || groupFromCtx.ID != group.ID {
+			c.JSON(http.StatusInternalServerError, gin.H{"ok": false})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"ok": true})
+	})
+
+	w := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodGet, "/t", nil)
+	req.Header.Set("x-api-key", apiKey.Key)
+	router.ServeHTTP(w, req)
+
+	require.Equal(t, http.StatusOK, w.Code)
+}
+
+func TestAPIKeyAuthOverwritesInvalidContextGroup(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	group := &service.Group{
+		ID:       101,
+		Name:     "g1",
+		Status:   service.StatusActive,
+		Platform: service.PlatformAnthropic,
+		Hydrated: true,
+	}
+	user := &service.User{
+		ID:          7,
+		Role:        service.RoleUser,
+		Status:      service.StatusActive,
+		Balance:     10,
+		Concurrency: 3,
+	}
+	apiKey := &service.APIKey{
+		ID:     100,
+		UserID: user.ID,
+		Key:    "test-key",
+		Status: service.StatusActive,
+		User:   user,
+		Group:  group,
+	}
+	apiKey.GroupID = &group.ID
+
+	apiKeyRepo := &stubApiKeyRepo{
+		getByKey: func(ctx context.Context, key string) (*service.APIKey, error) {
+			if key != apiKey.Key {
+				return nil, service.ErrAPIKeyNotFound
+			}
+			clone := *apiKey
+			return &clone, nil
+		},
+	}
+
+	cfg := &config.Config{RunMode: config.RunModeSimple}
+	apiKeyService := service.NewAPIKeyService(apiKeyRepo, nil, nil, nil, nil, cfg)
+	router := gin.New()
+	router.Use(gin.HandlerFunc(NewAPIKeyAuthMiddleware(apiKeyService, nil, cfg)))
+
+	invalidGroup := &service.Group{
+		ID:       group.ID,
+		Platform: group.Platform,
+		Status:   group.Status,
+	}
+	router.GET("/t", func(c *gin.Context) {
+		groupFromCtx, ok := c.Request.Context().Value(ctxkey.Group).(*service.Group)
+		if !ok || groupFromCtx == nil || groupFromCtx.ID != group.ID || !groupFromCtx.Hydrated || groupFromCtx == invalidGroup {
+			c.JSON(http.StatusInternalServerError, gin.H{"ok": false})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"ok": true})
+	})
+
+	w := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodGet, "/t", nil)
+	req.Header.Set("x-api-key", apiKey.Key)
+	req = req.WithContext(context.WithValue(req.Context(), ctxkey.Group, invalidGroup))
+	router.ServeHTTP(w, req)
+
+	require.Equal(t, http.StatusOK, w.Code)
+}
+
 func newAuthTestRouter(apiKeyService *service.APIKeyService, subscriptionService *service.SubscriptionService, cfg *config.Config) *gin.Engine {
 	router := gin.New()
 	router.Use(gin.HandlerFunc(NewAPIKeyAuthMiddleware(apiKeyService, subscriptionService, cfg)))