import axios from 'axios'

  import {
    MessageBox,
    Message
  } from 'element-ui'

  import store from '@/store'

  import {
    getToken
  } from '@/utils/auth'

  
  // create an axios instance

  // 创建axios实例

  const service = axios.create({

    // baseURL: '', // url = base url + request url

    baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
    // withCredentials: true, // send cookies when cross-domain requests

    timeout: 5000, // request timeout

    // headers: {
    //   'Content-Type': 'application/x-www-form-urlencoded'
    // }

  })
  
  // request interceptor

  // request拦截器

  service.interceptors.request.use(
    config => {
      // do something before request is sent

      // console.log('do something before request is sent')

      if (store.getters.token) {

        // console.log('[X-Token] is a custom headers key')

        // let each request carry token
        // ['X-Token'] is a custom headers key
        // please modify it according to the actual situation

        config.headers['X-Token'] = getToken();

        // config.headers['Content-Type'] = 'application/x-www-form-urlencoded';

        // var token = getToken()
        // Object.assign(config.headers, { 'token': token })

      }
      return config
    },
    error => {

      // console.log('do something with request error')

      // do something with request error

      console.error('出现错误。在use里。======>', error) // for debug

      return Promise.reject(error)
    }
  )
  
  // response interceptor

  // respone拦截器

  service.interceptors.response.use(
    /**
     * If you want to get http information such as headers or status
     * Please return  response => response

     */

  
    /**
     * Determine the request status by custom code
     * Here is just an example
     * You can also judge the status by HTTP Status Code
     */
    response => {
      const res = response.data

      console.log('返回的数据-- step 1------>', res);

      /**

       * 下面的注释为通过response自定义code来标示请求状态，当code返回如下情况为权限有问题，登出并返回到登录页
       * 如通过xmlhttprequest 状态码标识 逻辑可写在下面error中
       */
      // console.log('if the custom code is not 20000, it is judged as an error.')

      if (res.code !== 20000) {
        Message({
          message: res.message || 'Error',
          type: 'error',
          duration: 5 * 1000
        })

        // 50008:非法的token; 50012:其他客户端登录了;  50014:Token 过期了;

        if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
          // to re-login

          // MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          MessageBox.confirm('你已被登出，可以取消继续留在该页面，或者重新登录', '确定登出', {
            // confirmButtonText: 'Re-Login',
            confirmButtonText: '重新登录',
            // cancelButtonText: 'Cancel',
            cancelButtonText: '取消',

            type: 'warning'
          }).then(() => {
            store.dispatch('user/resetToken').then(() => {

              location.reload() // 为了重新实例化vue-router对象 避免bug

            })
          })
        }
        return Promise.reject(new Error(res.message || 'Error'))
      } else {

        // const token = res.data.token;

        console.log('进入20000号判断- step 2------->', res.data);
        const data = res.data;
        return data;

      }
    },
    error => {

      console.error('===============发生错误！！！！！===============' + error.message); // for debug
      // Message({
      //   message: error.message,
      //   type: 'error',
      //   duration: 5 * 1000
      // })

      return Promise.reject(error)
    }
  )
  
  export default service