// app.ts

App({
  globalData: {
    /// iPhone底部安全区域
    safeBottom: 0,
    /// 窗口高度
    windowHeight: 0
  },
  onLaunch() {

    /// 获取iPhone底部安全区域
    wx.getSystemInfo({
      success: res=> {
        console.log(res)
        this.globalData.safeBottom = res.screenHeight-res.safeArea.bottom
        this.globalData.windowHeight = res.windowHeight
      },
      fail(err) {
        console.log(err)
      }
    })

    // 展示本地存储能力
    const logs = wx.getStorageSync('logs') || []
    logs.unshift(Date.now())
    wx.setStorageSync('logs', logs)

    // 登录
    wx.login({
      success: res => {
        console.log(res.code)
        // 发送 res.code 到后台换取 openId, sessionKey, unionId
      },
    })
  },
})