import axios from 'axios';
import router from '@/router';
import dialog from '@/components/Dialog';
import JSONbig from 'json-bigint';
import { getToken, setToken } from '@/utils';

// 创建axios实例
const service = axios.create({
  timeout: 1000 * 30,
  withCredentials: true,
  headers: {
    // 'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8'
    'Content-Type': 'application/json; charset=utf-8',
    'deviceType': '4'
  },
  transformResponse: [
    function (data) {
      if (typeof data === 'string') {
        const JSONbigString = new JSONbig({storeAsString: true});
        return JSONbigString.parse(data);
      } else {
        return data;
      }
    }
  ]
})

// request拦截器
service.interceptors.request.use(
  config => {
    let token = getToken();
    let menuIdJsonStr = window.sessionStorage.getItem('currentMenuId');
    let currentMenuId;
    if (menuIdJsonStr != null) {
      currentMenuId = (JSON.parse(menuIdJsonStr) || {}).data;
    }
    if (token != null) config.headers['Authorization'] = token;
    if (currentMenuId != null) config.headers['MenuId'] = currentMenuId;
    return config
  }, error => {
    return Promise.reject(error)
  }
);

// response拦截器
service.interceptors.response.use(
  response => {
    if (response.data && response.data.errorCode === 'UNAUTHORIZED_LOGIN') { // 401, token失效
      dialog.closeAll();
      router.push({ name: 'login' })
    } else {
      if (response.headers['refreshedtoken'] != null) {
        setToken(response.headers['refreshedtoken']);
      }
    }
    return response
  }, error => {
    let response = error.response;

    if (response && response.data) {
      if (response.data.errorCode === 'UNAUTHORIZED_LOGIN') {
        dialog.closeAll();
        router.push({ name: 'login' });
      }

      return Promise.reject(response.data);
    } else {
      return Promise.reject(new Error({
        errorMessage: '数据获取失败，请稍后再试'
      }));
    }
  }
);

export default service