feat: 支付宝直连 H5 端使用 wap.pay 唤起支付宝 APP

前端传递 is_mobile 参数，AlipayProvider 根据设备类型选择：
- PC: alipay.trade.page.pay (FAST_INSTANT_TRADE_PAY)
- H5: alipay.trade.wap.pay (QUICK_WAP_WAY)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/api/orders/route.ts

@@ -10,6 +10,7 @@ const createOrderSchema = z.object({
   payment_type: z.string().min(1),
   src_host: z.string().max(253).optional(),
   src_url: z.string().max(2048).optional(),
+  is_mobile: z.boolean().optional(),
 });
 
 export async function POST(request: NextRequest) {
@@ -23,7 +24,7 @@ export async function POST(request: NextRequest) {
       return NextResponse.json({ error: '参数错误', details: parsed.error.flatten().fieldErrors }, { status: 400 });
     }
 
-    const { user_id, amount, payment_type, src_host, src_url } = parsed.data;
+    const { user_id, amount, payment_type, src_host, src_url, is_mobile } = parsed.data;
 
     // Validate amount range
     if (amount < env.MIN_RECHARGE_AMOUNT || amount > env.MAX_RECHARGE_AMOUNT) {
@@ -48,6 +49,7 @@ export async function POST(request: NextRequest) {
       clientIp,
       srcHost: src_host,
       srcUrl: src_url,
+      isMobile: is_mobile,
     });
 
     // 不向客户端暴露 userName / userBalance 等隐私字段

src/app/pay/page.tsx

@@ -255,6 +255,7 @@ function PayContent() {
           payment_type: paymentType,
           src_host: srcHost,
           src_url: srcUrl,
+          is_mobile: isMobile,
         }),
       });
 

src/lib/alipay/client.ts

@@ -27,18 +27,18 @@ function assertAlipayEnv(env: ReturnType<typeof getEnv>) {
 }
 
 /**
- * 生成电脑网站支付的跳转 URL（GET 方式）
+ * 生成支付宝网站/H5支付的跳转 URL（GET 方式）
- * 用于 alipay.trade.page.pay
+ * PC: alipay.trade.page.pay  H5: alipay.trade.wap.pay
  */
 export function pageExecute(
   bizContent: Record<string, unknown>,
-  options?: { notifyUrl?: string; returnUrl?: string },
+  options?: { notifyUrl?: string; returnUrl?: string; method?: string },
 ): string {
   const env = assertAlipayEnv(getEnv());
 
   const params: Record<string, string> = {
     ...getCommonParams(env.ALIPAY_APP_ID),
-    method: 'alipay.trade.page.pay',
+    method: options?.method || 'alipay.trade.page.pay',
     biz_content: JSON.stringify(bizContent),
   };
 

src/lib/alipay/provider.ts

@@ -22,16 +22,20 @@ export class AlipayProvider implements PaymentProvider {
   };
 
   async createPayment(request: CreatePaymentRequest): Promise<CreatePaymentResponse> {
+    const method = request.isMobile ? 'alipay.trade.wap.pay' : 'alipay.trade.page.pay';
+    const productCode = request.isMobile ? 'QUICK_WAP_WAY' : 'FAST_INSTANT_TRADE_PAY';
+
     const url = pageExecute(
       {
         out_trade_no: request.orderId,
-        product_code: 'FAST_INSTANT_TRADE_PAY',
+        product_code: productCode,
         total_amount: request.amount.toFixed(2),
         subject: request.subject,
       },
       {
         notifyUrl: request.notifyUrl,
         returnUrl: request.returnUrl,
+        method,
       },
     );
 

src/lib/order/service.ts

@@ -19,6 +19,7 @@ export interface CreateOrderInput {
   clientIp: string;
   srcHost?: string;
   srcUrl?: string;
+  isMobile?: boolean;
 }
 
 export interface CreateOrderResult {
@@ -134,6 +135,7 @@ export async function createOrder(input: CreateOrderInput): Promise<CreateOrderR
       paymentType: input.paymentType,
       subject: `${env.PRODUCT_NAME} ${payAmount.toFixed(2)} CNY`,
       clientIp: input.clientIp,
+      isMobile: input.isMobile,
     });
 
     await prisma.order.update({

src/lib/payment/types.ts

@@ -21,6 +21,8 @@ export interface CreatePaymentRequest {
   notifyUrl?: string;
   returnUrl?: string;
   clientIp?: string;
+  /** 是否来自移动端（影响支付宝选择 PC 页面支付 / H5 手机网站支付） */
+  isMobile?: boolean;
 }
 
 /** Response from creating a payment */