import qs from 'qs';
import axios from 'axios';
import { Message } from 'iview';
import uitls from './util';

let baseUrl = 'http://192.168.0.1:8888/'; //設(shè)置你的baseUrl

const CancelToken = axios.CancelToken;
const source = CancelToken.source();
//設(shè)置token
function setToken() {
  if (utils.local.get('token')) {
    axios.defaults.headers.common['token'] = utils.getLocal('token');
  }
}

//請(qǐng)求驗(yàn)證攔截器
axios.interceptors.request.use(config => {
store.commit('UPDATE_LOADING', true); //顯示loading,這里沒有用vuex可以省去
//判斷請(qǐng)求不是登陸接口的時(shí)候,字段是不是過期了,(根據(jù)業(yè)務(wù)邏輯做對(duì)應(yīng)的處理)
if (config.url.indexOf('login') < 0) {
let lessTime = Number(uitls.local.get('expireTime')) - Date.now(); //后臺(tái)返回的過期時(shí)間與現(xiàn)在的進(jìn)行計(jì)算
if (lessTime <= 0) {
Message.error({
content: '登陸過期',
duration: 5
});
source.token('token過期了');
store.commit('UPDATE_LOADING', false); //隱藏loading
window.location.href = '/login';
utils.local.clear();
}
}
return config;
});

//返回?cái)?shù)據(jù)攔截器
axios.interceptors.response.use(res => {
if (res.config.url.indexOf('login') >= 0) {
const { token, expireTime, code, data } = res.data;
if (code == '200') {
//登陸后做出一些本地的處理，按需加載,()
//...................
utils.local.set('expireTime', expireTime); //過期時(shí)間
utils.local.set('token', token);
}
}
return res;
});

//封裝請(qǐng)求方法
function formatReq(type, url, data) {
setToken();
return new Promise((reslove, reject) => {
axios({
method: type,
url: ${baseUrl}${url},
headers: {
//這里的請(qǐng)求頭與后臺(tái)商量設(shè)置
'content-Type': 'application/x-www-form-urlencoded'
},
cancelToken: source.token,
data: qs.stringify(data) //java后臺(tái)用qs轉(zhuǎn)
// data:JSON.stringify(data)//PHP后臺(tái)用JSON轉(zhuǎn)
})
.then(r => {
store.commit('UPDATE_LOADING', false); //隱藏loading
//這里可以添加指定對(duì)應(yīng)狀態(tài)碼的處理方式,比如登陸過期,res.data.code === '6666' 路由跳轉(zhuǎn)到login
reslove(r);
})
.catch(e => {
store.commit('UPDATE_LOADING', false); //隱藏loading
reject(e.message);
Message.error(e.message);
});
});
}

const Http = {
get: (url, query) => {
url = utils.formatUrl(url, query);
setToken();
return axios.get(${baseUrl}${url}, { cancelToken: source.token }).then(r => r);
},
post: (url, data) => formatReq('post', url, data),
put: (url, data) => formatReq('put', url, data),
patch: (url, data) => formatReq('patch', url, data),
delete: (url, data) => formatReq('delete', url, data)
};

export default Http;