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