text: import axios from 'axios'
  import { MessageBox, Message } 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
    // headers: {
    //   'Content-Type': 'multipart/form-data;',
    // },
    // transformRequest: [
    //   data => {
    //     const formData = new FormData();
    //     for (const key in data) {
    //       if (Object.hasOwnProperty.call(data, key)) {
    //         const element = data[key];
    //         formData.append(key, element)
    //       }
    //     }
    //     return formData
    //   }
    // ]
  })
  
  // request interceptor
  service.interceptors.request.use(
    config => {
      // do something before request is sent
      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['Authorization'] = `Bearer ${getToken()}`
      }
      if (config.method.toUpperCase() !== 'GET' && config.data) {
        let requestDataType = 'formData';
        if (config.customParam && config.customParam.requestDataType === 'json') {
          requestDataType = 'json';
        }
        if (requestDataType === 'formData') {
          const formData = new FormData();
          for (const key in config.data) {
            if (Object.hasOwnProperty.call(config.data, key)) {
              const element = config.data[key];
              formData.append(key, element)
            }
          }
          config.data = formData;
          config.headers['Content-Type'] = 'multipart/form-data';
        } else if (requestDataType === 'json') {
          config.headers['Content-Type'] = 'application/json';
        }
      }
      return config
    },
    error => {
      // do something with request error
      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 res = response.data
      return res;
      // 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('err' + error) // for debug
      Message({
        message: error.message,
        type: 'error',
        duration: 5 * 1000
      })
      return Promise.reject(error)
    }
  )
  
  export default service
  