refactor: 重构登录逻辑使用 async/await

app.js

@@ -1,5 +1,6 @@
 // app.js
 const { BASE_URL, API } = require('./utils/config')
+const { request } = require('./utils/api')
 
 App({
   onLaunch() {
@@ -24,18 +25,17 @@ App({
     })
   },
 
-  loginWithCode(code) {
-    wx.request({
+  async loginWithCode(code) {
+    try {
+      const data = await request({
         url: BASE_URL + API.LOGIN,
         method: 'GET',
-      data: { code },
-      success: (res) => {
-        const result = res.data
-        if (result && result.code === 0 && result.data) {
+        data: { code }
+      })
       const userInfo = {
-            openid: result.data.openid,
-            sessionKey: result.data.session_key,
-            unionid: result.data.unionid || ''
+        openid: data.openid,
+        sessionKey: data.session_key,
+        unionid: data.unionid || ''
       }
       this.globalData.userInfo = userInfo
       this.globalData.isLoggedIn = true
@@ -43,17 +43,11 @@ App({
       if (this.loginReadyCallback) {
         this.loginReadyCallback(userInfo)
       }
-        } else {
-          console.error('后端登录失败', result)
+    } catch (err) {
+      console.error('后端登录失败', err)
       this.handleLoginFail()
     }
   },
-      fail: (err) => {
-        console.error('请求后端登录接口失败', err)
-        this.handleLoginFail()
-      }
-    })
-  },
 
   handleLoginFail() {
     this.globalData.isLoggedIn = false