import axios from 'axios'
import { Notification, MessageBox, Message } from 'element-ui'
import store from '@/store'
import {getAccessToken, getRefreshToken, setToken} from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import Cookies from "js-cookie";
import {getPath, getTenantEnable} from "@/utils/ruoyi";
import {refreshToken} from "@/api/login";

// 是否显示重新登录
export let isRelogin = { show: false };
// Axios 无感知刷新令牌，参考 https://www.dashingdog.cn/article/11 实现
// 请求队列
let requestList = []
// 是否正在刷新中
let isRefreshToken = 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: process.env.VUE_APP_BASE_API + '/admin-api/', // 此处的 /admin-api/ 地址，原因是后端的基础路径为 /admin-api/
  // 超时
  timeout: 30000
})
// request拦截器
service.interceptors.request.use(config => {
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false
  if (getAccessToken() && !isToken) {
    config.headers['Authorization'] = 'Bearer ' + getAccessToken() // 让每个请求携带自定义token 请根据实际情况自行修改
  }
  // 设置租户
  if (getTenantEnable()) {
    const tenantId = Cookies.get('tenantId');
    if (tenantId) {
      config.headers['tenant-id'] = tenantId;
    }
  }
  // get请求映射params参数
  if (config.method === 'get' && config.params) {
    let url = config.url + '?';
    for (const propName of Object.keys(config.params)) {
      const value = config.params[propName];
      var part = encodeURIComponent(propName) + "=";
      if (value !== null && typeof(value) !== "undefined") {
        if (typeof value === 'object') {
          for (const key of Object.keys(value)) {
            let params = propName + '[' + key + ']';
            var subPart = encodeURIComponent(params) + "=";
            url += subPart + encodeURIComponent(value[key]) + "&";
          }
        } else {
          url += part + encodeURIComponent(value) + "&";
        }
      }
    }
    url = url.slice(0, -1);
    config.params = {};
    config.url = url;
  }
  return config
}, error => {
    console.log(error)
    Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use( async 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']
    if (code === 401) {
      // 如果未认证，并且未进行刷新令牌，说明可能是访问令牌过期了
      if (!isRefreshToken) {
        isRefreshToken = true;
        // 1. 如果获取不到刷新令牌，则只能执行登出操作
        if (!getRefreshToken()) {
          return handleAuthorized();
        }
        // 2. 进行刷新访问令牌
        try {
          const refreshTokenRes = await refreshToken()
          // 2.1 刷新成功，则回放队列的请求 + 当前请求
          setToken(refreshTokenRes.data)
          requestList.forEach(cb => cb())
          return service(res.config)
        } catch (e) {
          // 2.1 刷新失败，则只能执行登出操作
          return handleAuthorized();
        } finally {
          requestList = []
          isRefreshToken = false
        }
      } else {
        // 添加到队列，等待刷新获取到新的令牌
        return new Promise(resolve => {
          requestList.push(() => {
            config.headers['Authorization'] = 'Bearer ' + getAccessToken() // 让每个请求携带自定义token 请根据实际情况自行修改
            resolve(service(config))
          })
        })
      }
      return handleAuthorized();
    } else if (code === 500) {
      Message({
        message: msg,
        type: 'error'
      })
      return Promise.reject(new Error(msg))
    } else if (code === 901) {
      Message({
        type: 'error',
        duration: 0,
        dangerouslyUseHTMLString: true,
        message: '<div>演示模式，无法进行写操作</div>'
          + '<div> &nbsp; </div>'
          + '<div>参考 https://doc.iocoder.cn/ 教程</div>'
          + '<div> &nbsp; </div>'
          + '<div>5 分钟搭建本地环境</div>',
      })
      return Promise.reject(new Error(msg))
    } else if (code !== 200) {
      Notification.error({
        title: msg
      })
      return Promise.reject('error')
    } else {
      return res.data
    }
  },
  error => {
    console.log('err' + error)
    let { message } = error;
    if (message === "Network Error") {
      message = "后端接口连接异常";
    }
    else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    }
    else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }
    Message({
      message: message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export function getBaseHeader() {
  return {
    'Authorization': "Bearer " + getAccessToken(),
    'tenant-id': Cookies.get('tenantId'),
  }
}

function handleAuthorized() {
  if (!isRelogin.show) {
    isRelogin.show = true;
    MessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
        confirmButtonText: '重新登录',
        cancelButtonText: '取消',
        type: 'warning'
      }
    ).then(() => {
      isRelogin.show = false;
      store.dispatch('LogOut').then(() => {
        location.href = getPath('/index');
      })
    }).catch(() => {
      isRelogin.show = false;
    });
  }
  return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
}

export default service