import axios from 'axios'
import {
  ElNotification,
  ElMessageBox,
  ElMessage,
  ElLoading
} from 'element-plus'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { tansParams, blobValidate } from '@/utils/ruoyi'
import cache from '@/plugins/cache'
import { saveAs } from 'file-saver'
import router from '../router'
import useUserStore from '@/store/modules/user'

let downloadLoadingInstance
// 是否显示重新登录
export let isRelogin = { show: false }

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: import.meta.env.VITE_APP_BASE_API,
  // 超时
  timeout: 10000
})

// request拦截器
service.interceptors.request.use(
  (config) => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
    if (getToken() && !isToken) {
      config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    // get请求映射params参数
    if (config.method === 'get' && config.params) {
      let url = config.url + '?' + tansParams(config.params)
      url = url.slice(0, -1)
      config.params = {}
      config.url = url
    }
    if (
      !isRepeatSubmit &&
      (config.method === 'post' || config.method === 'put')
    ) {
      const requestObj = {
        url: config.url,
        data:
          typeof config.data === 'object'
            ? JSON.stringify(config.data)
            : config.data,
        time: new Date().getTime()
      }
      const sessionObj = cache.session.getJSON('sessionObj')
      if (
        sessionObj === undefined ||
        sessionObj === null ||
        sessionObj === ''
      ) {
        cache.session.setJSON('sessionObj', requestObj)
      } else {
        const s_url = sessionObj.url // 请求地址
        const s_data = sessionObj.data // 请求数据
        const s_time = sessionObj.time // 请求时间
        const interval = 1000 // 间隔时间(ms)，小于此时间视为重复提交
        if (
          s_data === requestObj.data &&
          requestObj.time - s_time < interval &&
          s_url === requestObj.url
        ) {
          const message = '数据正在处理，请勿重复提交'
          console.warn(`[${s_url}]: ` + message)
          return Promise.reject(new Error(message))
        } else {
          cache.session.setJSON('sessionObj', requestObj)
        }
      }
    }
    return config
  },
  (error) => {
    console.log(error)
    Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(
  (res) => {
    // 未设置状态码则默认成功状态
    const code = res.data.code || 200
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode['default']
    // 二进制数据则直接返回
    if (
      res.request.responseType === 'blob' ||
      res.request.responseType === 'arraybuffer'
    ) {
      return res.data
    }
    if (res.data.state && res.data.state.toLowerCase() !== "success") {

      if (res.data.message.includes('你没有此权限')) {
        // 会导致页面空白，所以要跳转到登陆页面
        console.log('需要退出');
        useUserStore().logOut();
        return;
      }

      ElMessage({ message: res.data.message, type: 'error', duration: 5 * 1000 })
      // 50008:非法的token; 50012:其他客户端登录了;  "notoken":Token 过期了

      if (
        res.data.state.toLowerCase() === 50008 ||
        res.data.state.toLowerCase() === 50012 ||
        res.data.state.toLowerCase() === "notoken"
      ) {
        console.log(router.currentRoute)
        if (router.currentRoute.value.path === "/chat/index") {
          router.push({ path: '/chat/login' })
          return
        }

        ElMessageBox.confirm(
          "你已被登出，可以取消继续留在该页面，或者重新登录",
          "确定登出",
          {
            confirmButtonText: "重新登录",
            cancelButtonText: "取消",
            type: "warning"
          }
        ).then(() => {
          store.dispatch("FedLogOut").then(() => {
            location.reload(); // 为了重新实例化vue-router对象 避免bug
          });
        });
      }
      return Promise.reject("error");
    } else {
      if (res.config.responseType === "blob") {
        return res;
      }
      return res.data;
    }
  },
  (error) => {
    console.log('err')
    let { message } = error
    if (message == 'Network Error') {
      message = '服务异常，请稍后重试'
    } else if (message.includes('timeout')) {
      message = '请求超时，请稍后重试'
    } else if (message.includes('Request failed with status code')) {
      message = message.substr(message.length - 3) + '异常'
    }
    ElMessage({ message: message, type: 'error', duration: 5 * 1000 })
    return Promise.reject(error)
  }
)

// 通用下载方法
export function download(url, params, filename, config) {
  downloadLoadingInstance = ElLoading.service({
    text: '正在下载数据，请稍候',
    background: 'rgba(0, 0, 0, 0.7)'
  })
  console.log(params)
  return service
    .post(url, params, {
      transformRequest: [
        (params) => {
          return tansParams(params)
        }
      ],
      headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
      responseType: 'blob',
      ...config
    })
    .then(async (data) => {
      const isBlob = blobValidate(data)
      if (isBlob) {
        const blob = new Blob([data])
        saveAs(blob, filename)
      } else {
        const resText = await data.text()
        const rspObj = JSON.parse(resText)
        const errMsg =
          errorCode[rspObj.code] || rspObj.msg || errorCode['default']
        ElMessage.error(errMsg)
      }
      downloadLoadingInstance.close()
    })
    .catch((r) => {
      console.error(r)
      ElMessage.error('下载文件出现错误，请联系管理员！')
      downloadLoadingInstance.close()
    })
}

export default service
