封装token

let baseApiUrl = 'xxxx'
var app = getApp();

let defaultHeaders = {
    'Content-Type': 'application/json'
}
function request(url, data, method, header={}) {
  return new Promise(function (reslove, reject) {
    wx.request({
      url: baseApiUrl + url,
      data: data,
      method: method, 
      header: Object.assign(defaultHeaders, header,{
        token: wx.getStorageSync('_user_token')
      }),
      success: function (res) {
        if (res.statusCode != 200) {
          reject(res);
          return
        } else if (res.data.code == 10020001){
          console.log('invalida token.')
          refreshToken().then(resp=>{
            console.log('request aggin...')
            request(url, data, method, header).then((resp) => {
              reslove(resp)
            })
          })
          return
        }
        reslove(res);
      },
      fail: function (res) {
        reject(res);
      },
      complete: function (res) {
      }
    })
  })
}

function refreshToken(){
  return new Promise((resolve, reject) => {
    wx.login({
      success(res) {
        console.log(res)
        request('/login/index/index', {
          code: res.code
        }).then(res => {
          var _user_token = res.data.data.token
          var _user_openid = res.data.data.openid
          var _user_unionId = res.data.data.unionid
          var token_time = Date.parse(new Date()) + 23 * 60 * 60 * 60
          wx.setStorageSync('_user_token', _user_token);
          wx.setStorageSync('token_time', token_time);
          wx.setStorageSync('_user_openid', _user_openid);
          wx.setStorageSync('_user_unionId', _user_unionId);
          defaultHeaders.token = res.data.token
          resolve(res.data)
        })
      },
      fail(res) {
        reject()
      }
    })
  })
}

module.exports = {
  refreshToken: refreshToken,
  request: request
}