refactor(网络请求): 重构弱网处理逻辑并移除组件中的超时代码

将弱网和超时处理逻辑集中到请求拦截器中
移除组件中冗余的超时处理代码
添加离线预约缓存检查功能

 <!--
  * @Date: 2024-01-16 10:06:47
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2026-01-13 15:18:07
+ * @LastEditTime: 2026-01-13 16:00:44
  * @FilePath: /xyxBooking-weapp/src/components/qrCode.vue
  * @Description: 预约码卡组件
 -->
@@ -169,12 +169,7 @@ const formatGroup = (data) => {
 const init = async () => {
   if (!props.type) {
     try {
-        // TAG: 设置 5s 超时判定为弱网
-        const timeoutPromise = new Promise((_, reject) => {
-            setTimeout(() => reject(new Error('TIMEOUT')), 5000);
-        });
-
-        const { code, data } = await Promise.race([qrcodeListAPI(), timeoutPromise]);
+        const { code, data } = await qrcodeListAPI();
 
         if (code) {
           data.forEach(item => {
@@ -194,10 +189,6 @@ const init = async () => {
         }
     } catch (err) {
         console.error('Fetch QR List Failed:', err);
-        // 如果是超时，跳转弱网页面
-        if (err.message === 'TIMEOUT') {
-            go('/pages/weakNetwork/index');
-        }
     }
   } else {
     if (props.payId) {

 /*
  * @Date: 2022-09-19 14:11:06
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2026-01-08 19:25:17
+ * @LastEditTime: 2026-01-13 16:15:35
  * @FilePath: /xyxBooking-weapp/src/utils/request.js
  * @Description: 简单axios封装，后续按实际处理
  */
@@ -11,6 +11,7 @@ import Taro from '@tarojs/taro'
 // import qs from 'qs'
 // import { strExist } from './tools'
 import { refreshSession, saveCurrentPagePath, navigateToAuth } from './authRedirect'
+import { has_offline_booking_cache } from '@/composables/useOfflineBookingCache'
 
 // import { ProgressStart, ProgressEnd } from '@/components/axios-progress/progress';
 // import store from '@/store'
@@ -46,6 +47,95 @@ service.defaults.params = {
   ...REQUEST_DEFAULT_PARAMS,
 };
 
+let has_shown_timeout_modal = false
+
+/**
+ * 判断是否为超时错误
+ * @param {Error} error - 请求错误对象
+ * @returns {boolean} 是否为超时错误
+ */
+
+const is_timeout_error = (error) => {
+  const msg = String(error?.message || error?.errMsg || '')
+  if (error?.code === 'ECONNABORTED') return true
+  return msg.toLowerCase().includes('timeout')
+}
+
+/**
+ * 判断是否为网络错误（断网/弱网/请求失败等）
+ * @param {Error} error - 请求错误对象
+ * @returns {boolean} 是否为网络错误
+ */
+const is_network_error = (error) => {
+  const msg = String(error?.message || error?.errMsg || '')
+  const raw = (() => {
+    try {
+      return JSON.stringify(error) || ''
+    } catch (e) {
+      return ''
+    }
+  })()
+  const lower = (msg + ' ' + raw).toLowerCase()
+  if (lower.includes('request:fail')) return true
+  if (lower.includes('request fail')) return true
+  if (lower.includes('network error')) return true
+  if (lower.includes('failed to fetch')) return true
+  if (lower.includes('the internet connection appears to be offline')) return true
+  if (lower.includes('err_blocked_by_client')) return true
+  if (lower.includes('blocked_by_client')) return true
+  return false
+}
+
+/**
+ * 是否需要触发弱网/断网降级逻辑
+ * - 超时：直接触发
+ * - 网络错误：直接触发（避免 wifi 但无网场景漏判）
+ * @param {Error} error - 请求错误对象
+ * @returns {Promise<boolean>} 是否需要触发降级
+ */
+const should_handle_bad_network = async (error) => {
+  if (is_timeout_error(error)) return true
+  return is_network_error(error)
+}
+
+/**
+ * 处理请求超时错误
+ * - 显示超时提示 modal
+ * - 若有离线预约记录缓存，则跳转至离线预约列表页
+ * - 否则提示用户检查网络连接
+ */
+const handle_request_timeout = async () => {
+  if (has_shown_timeout_modal) return
+  has_shown_timeout_modal = true
+
+  const pages = Taro.getCurrentPages ? Taro.getCurrentPages() : []
+  const current_page = pages && pages.length ? pages[pages.length - 1] : null
+  const current_route = current_page?.route || ''
+  if (String(current_route).includes('pages/offlineBookingList/index')) return
+
+  // 若有离线预约记录缓存，则跳转至离线预约列表页
+  if (has_offline_booking_cache()) {
+    try {
+      await Taro.reLaunch({ url: '/pages/offlineBookingList/index' })
+    } catch (e) {
+      console.error('reLaunch offlineBookingList failed:', e)
+    }
+    return
+  }
+
+  // 否则提示用户检查网络连接
+  try {
+    await Taro.showModal({
+      title: '网络连接不畅',
+      content: '当前网络信号较弱，暂无法使用小程序，请到网络更好的地方重试。',
+      confirmText: '知道了',
+      showCancel: false,
+    })
+  } catch (e) {
+    console.error('show weak network modal failed:', e)
+  }
+}
+
 // request interceptor
 service.interceptors.request.use(
   config => {
@@ -144,12 +234,15 @@ service.interceptors.response.use(
 
     return response
   },
-  error => {
+  async error => {
     // Taro.showToast({
     //   title: error.message,
     //   icon: 'none',
     //   duration: 2000
     // })
+    if (await should_handle_bad_network(error)) {
+      handle_request_timeout()
+    }
     return Promise.reject(error)
   }
 )