const WXAPI = require('apifm-wxapi')

// 检测登录状态，返回 true / false
async function checkHasLogined() {
  const token = wx.getStorageSync('token')
  if (!token) {
    return false
  }
  wx.checkSession({
    fail() {
      return false
    }
  })
  const checkTokenRes = await WXAPI.checkToken(token)
  if (checkTokenRes.code != 0) {
    wx.removeStorageSync('token')
    return false
  }
  return true
}

async function login(page){

  const _this = this
  wx.login({
    success: function (res) {
         // 必须是在用户已经授权的情况下调用
     let code = res.code; // 微信登录接口返回的 code 参数，下面注册接口需要用到
      wx.getUserInfo({
        success: function (res) {
          var userInfo = res.userInfo
          var nickName = userInfo.nickName
          var avatarUrl = userInfo.avatarUrl
          var gender = userInfo.gender //性别 0：未知、1：男、2：女
          var province = userInfo.province
          var city = userInfo.city
          var country = userInfo.country
              WXAPI.login_wx(res.code,nickName,avatarUrl,gender,province,city,country).then(function (res) {
        if (res.code == 10000) {
          // 去注册
          //_this.register(page)
          return;
        }
        if (res.code != 0) {
          // 登录错误
          wx.showModal({
            title: '无法登录',
            content: res.msg,
            showCancel: false
          })
          return;
        }
        wx.setStorageSync('token', res.data.token)
        wx.setStorageSync('uid', res.data.uid)
        if ( page ) {
          page.onShow()
        }
      })
        }
      })


    }
  })
}

async function register(page) {
  let _this = this;
  wx.login({
    success: function (res) {
      let code = res.code; // 微信登录接口返回的 code 参数，下面注册接口需要用到
      wx.getUserInfo({
        success: function (res) {
          let iv = res.iv;
          let encryptedData = res.encryptedData;
          let referrer = '' // 推荐人
          let referrer_storge = wx.getStorageSync('referrer');
          if (referrer_storge) {
            referrer = referrer_storge;
          }
          // 下面开始调用注册接口
          WXAPI.register_complex({
            code: code,
            encryptedData: encryptedData,
            iv: iv,
            referrer: referrer
          }).then(function (res) {
            _this.login(page);
          })
        }
      })
    }
  })
}

function loginOut(){
  wx.removeStorageSync('token')
  wx.removeStorageSync('uid')
}

module.exports = {
  checkHasLogined: checkHasLogined,
  login: login,
  register: register,
  loginOut: loginOut
}