/**
 * 用户相关服务
 */
const util = require('../utils/util.js');
const api = require('../api/api.js');


/**
 * Promise封装wx.checkSession
 */
function checkSession() {
  return new Promise(function(resolve, reject) {
    wx.checkSession({
      success: function() {
        resolve(true);
      },
      fail: function() {
        reject(false);
      }
    })
  });
} 

/**
 * Promise封装wx.login
 */
function login() {
  return new Promise(function(resolve, reject) {
    wx.login({
      success: function(res) {
        if (res.code) {
          resolve(res);
        } else {
          reject(res);
        }
      },
      fail: function(err) {
        reject(err);
      }
    });
  });
} 
/**
 * 调用微信登录
 */
function loginByWeixin(userInfo) { 
  return new Promise(function(resolve, reject) {  
    console.info(userInfo);
      //登录远程服务器
      util.request(api.AuthLoginByWeixin, userInfo 
      , 'POST').then(res => {
        if (res.errno === 0) {
          //存储用户信息 
          wx.setStorageSync('userInfo', res.data.userInfo); 
          resolve(res);
        } else {
          reject(res);
        }
      }).catch((err) => {
        reject(err);
      }); 
  });
}

/**
 * 判断用户是否登录
 */
function checkLogin() {
  return new Promise(function(resolve, reject) {
    if (wx.getStorageSync('userInfo') && wx.getStorageSync('token')) {
     resolve(true);
    } else { 
        reject(false); 
    }
  });
}
function cartadd(num){
  let count=wx.getStorageSync('cartcount');
  console.info('count'+count);
  if(count==null) count=0;
   count=count+num;
   wx.setStorageSync('cartcount',count);
//   wx.setTabBarBadge({
//    index: 2,
//    text: ''+count+''
//  })
}  

module.exports = {
  loginByWeixin,
  checkLogin, 
  login,
  cartadd 
};