import axios from 'axios'

  import qs from 'qs'
  import {
    MessageBox,
    Message,
    // Loading,
    Notification
  } from 'element-ui'

  import store from '@/store'

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

  
  // create an axios instance
  const service = axios.create({
    baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url

    withCredentials: true, // send cookies when cross-domain requests
    timeout: 3000 // request timeout

  })

  // let loadingInstance

  // request interceptor
  service.interceptors.request.use(
    config => {

      const token = sessionStorage.getItem('access_token')
      // const csrf = store.getters.csrf
      if (token) {
        config.headers = {
          'access-token': token,
          'Content-Type': 'application/x-www-form-urlencoded'
        }
      }
      if (config.url === 'refresh') {
        config.headers = {
          'refresh-token': sessionStorage.getItem('refresh_token'),
          'Content-Type': 'application/x-www-form-urlencoded'
        }
      }
      // let options = {
      //   lock: true,
      //   fullscreen: false,
      //   text: '数据加载中……',
      //   // background: '#FFCC00',
      //   spinner: 'el-icon-loading'
      // };
      const options = {
        type: 'success',
        message: config.url,
        title: 'request axios ',
        showClose: true,
        duration: 3000
      }
      Notification(options)
      // loadingInstance = Loading.service(options);
      config.method === 'post'
        ? config.data = qs.stringify({
          ...config.data
        })
        : config.params = {
          ...config.params
        }

      if (store.getters.token) {
        // 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'

      return config

      // do something before request is sent

    },
    error => {
      // do something with request error

      Message({
        message: error || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      console.log(error) // for debug

      return Promise.reject(error)
    }
  )
  
  // response interceptor
  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 options = {
        type: 'error',
        message: response.status,
        title: 'response status value ',
        showClose: true,
        duration: 1000
      }
      Notification(options)
      // Notification.close()
      // 这里根据后端提供的数据进行对应的处理
      console.log('response===>', response)
      // 定时刷新access-token
      // if (!response.data.value && response.data.data.message === 'token invalid') {
      //   // 刷新token
      //   store.dispatch('refresh').then(response => {
      //   sessionStorage.setItem('access_token', response.data)
      //   }).catch(error => {
      //   throw new Error('token刷新' + error)
      //   })
      // }

      const res = response.data

  
      // 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: Illegal token; 50012: Other clients logged in; 50014: Token expired;

        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', {
            confirmButtonText: 'Re-Login',
            cancelButtonText: 'Cancel',

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

              location.reload()

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

        return res

      }
    },
    error => {

      console.log('error', error)
      // console.log(JSON.stringify(error));
      // 500的状态也应该处理一下
      // 401-403的状态也应该处理一下
      const text = JSON.parse(JSON.stringify(error)).response.status === 404
        ? '404'
        : '网络异常，请重试'

      Message({

        message: text || 'Error',

        type: 'error',
        duration: 5 * 1000
      })

      return Promise.reject(error)
    }
  )

  // 假设你想移除拦截器
  // axios.interceptors.request.eject(service);

  export default service