// app.js
const { BASE_URL, API } = require('./utils/config')
const { request } = require('./utils/api')

App({
  onLaunch() {
    // 自动静默登录：wx.login 获取 code，再请求后端接口换取 openid
    this.silentLogin()
  },

  silentLogin() {
    wx.login({
      success: (loginRes) => {
        if (loginRes.code) {
          this.loginWithCode(loginRes.code)
        } else {
          console.error('wx.login 失败', loginRes.errMsg)
          this.handleLoginFail()
        }
      },
      fail: (err) => {
        console.error('wx.login 调用失败', err)
        this.handleLoginFail()
      }
    })
  },

  async loginWithCode(code) {
    try {
      const data = await request({
        url: BASE_URL + API.LOGIN,
        method: 'GET',
        data: { code }
      })
      const userInfo = {
        openid: data.openid,
        sessionKey: data.session_key,
        unionid: data.unionid || ''
      }
      this.globalData.userInfo = userInfo
      this.globalData.isLoggedIn = true
      wx.setStorageSync('userInfo', userInfo)
      if (this.loginReadyCallback) {
        this.loginReadyCallback(userInfo)
      }
    } catch (err) {
      console.error('后端登录失败', err)
      this.handleLoginFail()
    }
  },

  handleLoginFail() {
    this.globalData.isLoggedIn = false
    this.globalData.loginFailed = true
    if (this.loginReadyCallback) {
      this.loginReadyCallback(null)
    }
  },

  globalData: {
    userInfo: null,
    isLoggedIn: false,
    loginFailed: false
  }
})