import axios from 'axios'
import { ElMessage } from 'element-plus'
import store from '@/stores'
const mode = import.meta.env.MODE
console.log('mode',mode)
let app_base_api = import.meta.env.VITE_API_BASE_URL
if(mode == 'prod'){
  app_base_api = systemConfig.baseUrl
}
// create an axios instance
const service = axios.create({
  baseURL: app_base_api, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 120 * 1000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  (config) => {
    // do something before request is sent
    let userStore=store.userStore();
    if (userStore.state.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 "+ userStore.state.token
      config.headers['X-Authorization'] ="Bearer "+ userStore.state.refreshToken
    }
    return config
  },
  (error) => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// 是否在刷新Token标记
let isRefreshingToken=false
// 刷新时后续的请求队列
let requestList = []

// 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
   */
  async (response) => {
    if (response.status === 200) {
      const res = response.data
      //下载文件
      if(res instanceof Blob){
        return response
      }
      // 1 是正确 .
      if (res.code != 1) {
        //报错
        ElMessage({
          message: res.message || 'Error',
          type: 'error',
          duration: 5 * 1000
        })
        return Promise.reject(new Error(res.message || 'Error'))
      } else {
        return res
      }
    } else {
      return Promise.reject(new Error(response.statusText || 'Error'))
    }
  },
  async (error) =>  {
    if(error.status===401){
      if(!isRefreshingToken){
        // 修改isRefreshing状态
        isRefreshingToken = true
        await store.userStore().reLogin()
        .catch(async err=>{
          debugger
          //重新到登录页
          store.userStore().resetAllToken()
          window.location.href="/login"
          return Promise.reject(err)
        })
        // 重置状态
        isRefreshingToken = false
        // token 刷新后将数组里的请求队列方法重新执行
        requestList.forEach((it) => it())
        // 重新请求完清空
        requestList = []
        // 继续未完成的请求
        const resp = await service.request(error.config)
        // 返回请求结果
        return Promise.resolve(resp)
       
      }else{
        // 后面的请求走这里排队
        // 返回未执行 resolve 的 Promise
        return new Promise(resolve => {
          // 用函数形式将 resolve 存入，等待获取新token后再执行
          requestList.push(() => {
            resolve(service(error.config))
          })
        })
      }
    }else{
      console.log('err' + error) // for debug
      ElMessage({
        message: error.message,
        type: 'error',
        duration: 5 * 1000
      })
      return Promise.reject(error)
    }
  }
)

export default service