text: import axios from 'axios'
  import { MessageBox, Message, Loading } 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: 5000, // request timeout
    showLoding: true
  })
  
  let loading
  function startLoading() {
    loading = Loading.service({
      fullscreen: true,
      text: 'Loading...',
      customClass: 'loading'
    })
  }
  function endLoading() {
    loading.close()
  }
  
  // 合并同一时刻请求，防止多次弹出loading
  let needLoadingRequestCount = 0
  export function tryShowLoading() {
    if (needLoadingRequestCount === 0) {
      startLoading()
    }
    needLoadingRequestCount++
  }
  
  export function tryHideLoading() {
    if (needLoadingRequestCount <= 0) { return }
    needLoadingRequestCount--
    if (needLoadingRequestCount === 0) {
      endLoading()
    }
  }
  
  // request interceptor
  service.interceptors.request.use(
    config => {
      // do something before request is sent
      if (config.showLoding) {
        // tryShowLoading()
      }
  
      if (store.getters.token) {
        // let each request carry token
        // please modify it according to the actual situation
        config.headers['Authorization'] = getToken()
      }
      return config
    },
    error => {
      // do something with request error
      tryHideLoading()
      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 => {
      tryHideLoading()
  
      const res = response.data
      console.log(res)
      if (res.code !== 0 && res.code !== 20000) {
        Message({
          message: res.msg || '请求错误',
          type: 'error',
          duration: 5 * 1000
        })
  
        // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
        if (res.code === 2000 || res.code === 50012 || res.code === 50014) {
          // to re-login
          MessageBox.confirm('登录已失效，请重新登录', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
          }).then(() => {
            store.dispatch('user/resetToken').then(() => {
              location.reload()
            })
          })
        }
        return Promise.reject(new Error(res.msg || 'Error'))
      } else {
        return res
      }
    },
    error => {
      tryHideLoading()
      console.log('err' + error) // for debug
      Message({
        message: error.message,
        type: 'error',
        duration: 5 * 1000
      })
      return Promise.reject(error)
    }
  )
  
  export default service
  