feat: unified gravity system - VIP members consume gravity instead of unlimited; add monthly gravity top-up cron

backend/src/modules/payment/wechat-pay.service.ts

@@ -51,6 +51,8 @@ export class WechatPayService {
   /** 发起 API v3 请求 */
   private async request(method: string, apiPath: string, body?: any) {
     const url = `${WX_API_BASE}${apiPath}`
+    const bodyStr = body ? JSON.stringify(body) : ''
+    this.logger.log(`[wxpay-request] ${method} ${apiPath} 请求体: ${bodyStr}`)
     try {
       const res = await axios({
         method,
@@ -63,9 +65,12 @@ export class WechatPayService {
         },
         data: body,
       })
+      this.logger.log(`[wxpay-request] ${method} ${apiPath} 成功: ${JSON.stringify(res.data)}`)
       return res.data
     } catch (e: any) {
-      this.logger.error(`微信支付请求失败: ${method} ${apiPath}`, e.response?.data || e.message)
+      const errDetail = e.response?.data ? JSON.stringify(e.response.data) : e.message
+      const errStatus = e.response?.status || '无状态码'
+      this.logger.error(`[wxpay-request] ${method} ${apiPath} 失败 status=${errStatus}: ${errDetail}`)
       throw e
     }
   }
@@ -99,8 +104,15 @@ export class WechatPayService {
       amount: { total: amount, currency: 'CNY' },
       payer: { openid },
     }
+    this.logger.log(`[jsapiPay] 下单参数: description=${description}, outTradeNo=${outTradeNo}, amount=${amount}, openid=${openid}`)
+    this.logger.log(`[jsapiPay] 完整请求体: ${JSON.stringify(body)}`)
     const result = await this.request('POST', '/v3/pay/transactions/jsapi', body)
+    this.logger.log(`[jsapiPay] 微信返回: ${JSON.stringify(result)}`)
     const prepayId = result.prepay_id
+    if (!prepayId) {
+      this.logger.error(`[jsapiPay] 微信返回缺少prepay_id: ${JSON.stringify(result)}`)
+      throw new Error('微信下单失败: 缺少prepay_id')
+    }
     // 生成小程序/JSAPI 调起支付参数
     const nonce = crypto.randomBytes(16).toString('hex')
     const timestamp = Math.floor(Date.now() / 1000).toString()