feat: 添加登录失败处理及记录格式化功能

增加登录失败状态处理和重试机制
将记录格式化逻辑提取到工具函数
优化云数据库查询性能

utils/cloud.js

@@ -1,7 +1,33 @@
 // 云数据库操作工具库
 
-const db = wx.cloud.database()
-const _ = db.command
+/**
+ * 延迟获取 db 实例，确保 cloud.init 已完成
+ */
+function getDb() {
+  return wx.cloud.database()
+}
+
+function getCmd() {
+  return getDb().command
+}
+
+/**
+ * 格式化云数据库时间字段
+ * @param {object} record - 含 createTime 的记录
+ * @returns {object} 格式化后的记录
+ */
+function formatRecord(record) {
+  const date = record.createTime
+  let createTimeStr = ''
+  if (date) {
+    if (typeof date === 'object' && date.$date) {
+      createTimeStr = new Date(date.$date).toLocaleString('zh-CN')
+    } else {
+      createTimeStr = new Date(date).toLocaleString('zh-CN')
+    }
+  }
+  return { ...record, createTime: createTimeStr }
+}
 
 /**
  * 用户相关操作
@@ -10,50 +36,32 @@ const userDB = {
   /**
    * 通过 openId 查找用户，不存在则创建
    * @param {string} openid
-   * @param {object} userInfo - { avatarUrl, nickName }
    * @returns {Promise<object>} 用户记录
    */
-  async loginOrCreate(openid, userInfo) {
+  async loginOrCreate(openid) {
+    const db = getDb()
     const res = await db.collection('users').where({ _openid: openid }).get()
     if (res.data.length > 0) {
-      // 已存在，更新头像昵称
       const existing = res.data[0]
       await db.collection('users').doc(existing._id).update({
         data: {
-          avatarUrl: userInfo.avatarUrl,
-          nickName: userInfo.nickName,
           lastLoginTime: db.serverDate()
         }
       })
-      return { ...existing, avatarUrl: userInfo.avatarUrl, nickName: userInfo.nickName }
+      return existing
     } else {
-      // 不存在，新建
       const addRes = await db.collection('users').add({
         data: {
           _openid: openid,
-          avatarUrl: userInfo.avatarUrl,
-          nickName: userInfo.nickName,
           createTime: db.serverDate(),
           lastLoginTime: db.serverDate()
         }
       })
       return {
         _id: addRes._id,
-        _openid: openid,
-        avatarUrl: userInfo.avatarUrl,
-        nickName: userInfo.nickName
+        _openid: openid
       }
     }
-  },
-
-  /**
-   * 根据 openId 获取用户信息
-   * @param {string} openid
-   * @returns {Promise<object|null>}
-   */
-  async getByOpenId(openid) {
-    const res = await db.collection('users').where({ _openid: openid }).get()
-    return res.data.length > 0 ? res.data[0] : null
   }
 }
 
@@ -67,6 +75,7 @@ const appointmentDB = {
    * @returns {Promise<string>} 新记录 _id
    */
   async create(data) {
+    const db = getDb()
     const res = await db.collection('appointments').add({
       data: {
         ...data,
@@ -79,16 +88,29 @@ const appointmentDB = {
   },
 
   /**
-   * 获取当前用户的预约列表（按创建时间倒序）
+   * 获取当前用户的预约列表（按创建时间倒序，自动分页取全部）
    * @param {string} openid
    * @returns {Promise<Array>}
    */
   async getList(openid) {
-    const res = await db.collection('appointments')
-      .where({ _openid: openid })
-      .orderBy('createTime', 'desc')
-      .get()
-    return res.data
+    const db = getDb()
+    const MAX_LIMIT = 100
+    let allData = []
+    let countResult = await db.collection('appointments').where({ _openid: openid }).count()
+    const total = countResult.total
+    const batchTimes = Math.ceil(total / MAX_LIMIT)
+
+    for (let i = 0; i < batchTimes; i++) {
+      const res = await db.collection('appointments')
+        .where({ _openid: openid })
+        .orderBy('createTime', 'desc')
+        .skip(i * MAX_LIMIT)
+        .limit(MAX_LIMIT)
+        .get()
+      allData = allData.concat(res.data)
+    }
+
+    return allData
   },
 
   /**
@@ -97,6 +119,7 @@ const appointmentDB = {
    * @returns {Promise<object|null>}
    */
   async getLatest(openid) {
+    const db = getDb()
     const res = await db.collection('appointments')
       .where({ _openid: openid })
       .orderBy('createTime', 'desc')
@@ -112,7 +135,7 @@ const appointmentDB = {
    * @returns {Promise<boolean>} 是否成功
    */
   async cancel(id, openid) {
-    // 先校验该预约属于当前用户
+    const db = getDb()
     const res = await db.collection('appointments').doc(id).get()
     if (res.data._openid !== openid) {
       return false
@@ -131,8 +154,9 @@ const appointmentDB = {
 }
 
 module.exports = {
-  db,
-  _,
+  getDb,
+  getCmd,
+  formatRecord,
   userDB,
   appointmentDB
 }