merge: 合并上游 v0.1.86 到 main 分支

backend/internal/pkg/antigravity/oauth.go

@@ -6,10 +6,14 @@ import (
 	"encoding/base64"
 	"encoding/hex"
 	"fmt"
+	"net/http"
 	"net/url"
+	"os"
 	"strings"
 	"sync"
 	"time"
+
+	infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
 )
 
 const (
@@ -19,8 +23,10 @@ const (
 	UserInfoURL  = "https://www.googleapis.com/oauth2/v2/userinfo"
 
 	// Antigravity OAuth 客户端凭证
-	ClientID     = "1071006060591-tmhssin2h21lcre235vtolojh4g403ep.apps.googleusercontent.com"
-	ClientSecret = "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"
+	ClientID = "1071006060591-tmhssin2h21lcre235vtolojh4g403ep.apps.googleusercontent.com"
+
+	// AntigravityOAuthClientSecretEnv 是 Antigravity OAuth client_secret 的环境变量名。
+	AntigravityOAuthClientSecretEnv = "ANTIGRAVITY_OAUTH_CLIENT_SECRET"
 
 	// 固定的 redirect_uri（用户需手动复制 code）
 	RedirectURI = "http://localhost:8085/callback"
@@ -46,6 +52,35 @@ const (
 	antigravityDailyBaseURL = "https://daily-cloudcode-pa.sandbox.googleapis.com"
 )
 
+// defaultUserAgentVersion 可通过环境变量 ANTIGRAVITY_USER_AGENT_VERSION 配置，默认 1.18.4
+var defaultUserAgentVersion = "1.18.4"
+
+// defaultClientSecret 可通过环境变量 ANTIGRAVITY_OAUTH_CLIENT_SECRET 配置
+var defaultClientSecret = "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"
+
+func init() {
+	// 从环境变量读取版本号，未设置则使用默认值
+	if version := os.Getenv("ANTIGRAVITY_USER_AGENT_VERSION"); version != "" {
+		defaultUserAgentVersion = version
+	}
+	// 从环境变量读取 client_secret，未设置则使用默认值
+	if secret := os.Getenv(AntigravityOAuthClientSecretEnv); secret != "" {
+		defaultClientSecret = secret
+	}
+}
+
+// GetUserAgent 返回当前配置的 User-Agent
+func GetUserAgent() string {
+	return fmt.Sprintf("antigravity/%s windows/amd64", defaultUserAgentVersion)
+}
+
+func getClientSecret() (string, error) {
+	if v := strings.TrimSpace(defaultClientSecret); v != "" {
+		return v, nil
+	}
+	return "", infraerrors.Newf(http.StatusBadRequest, "ANTIGRAVITY_OAUTH_CLIENT_SECRET_MISSING", "missing antigravity oauth client_secret; set %s", AntigravityOAuthClientSecretEnv)
+}
+
 // BaseURLs 定义 Antigravity API 端点（与 Antigravity-Manager 保持一致）
 var BaseURLs = []string{
 	antigravityProdBaseURL,  // prod (优先)