backend.js (1554B) download
1function callBackend(method, endpoint, data = null, headers = {}) {
2 let token = localStorage.getItem('token');
3 if (token) {
4 headers['Authorization'] = 'Bearer ' + token;
5 }
6 if (data) {
7 data = JSON.stringify(data);
8 headers['Content-Type'] = 'application/json';
9 } else {
10 data = undefined;
11 }
12 return fetch('http://localhost:8000/' + endpoint, {
13 method: method,
14 headers: {
15 'Accept': 'application/json', // responding content-type
16 ...headers
17 },
18 body: data
19 }).then(res => res.json()).catch(e => ({}));
20}
21
22function parseJWT(token) {
23 var base64 = token.split('.')[1].replace(/-/g, '+').replace(/_/g, '/');
24 var jsonPayload = decodeURIComponent(window.atob(base64).split('').map(c =>
25 '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2)
26 ).join(''));
27
28 return JSON.parse(jsonPayload);
29}
30
31function getUser() {
32 let token = localStorage.getItem('token');
33 if (!token)
34 return Promise.resolve(null);
35
36 let { sub: id, username: name, roles } = parseJWT(token);
37
38 return callBackend('GET', `api/player/${id}/email`).then(() => {
39 return { id, name, roles, token };
40 }).catch(e => null);
41}
42
43function login(username, password) {
44 return callBackend('POST', 'api/login_check', { username, password })
45 .then(({ token, code, message }) => {
46 if (token) {
47 localStorage.setItem('token', token);
48 return {};
49 }
50 return { code, message };
51 });
52}
53
54function register(username, email, password) {
55 return callBackend('POST', 'register', { username, email, password });
56}
57
58function logout() {
59 localStorage.removeItem('token');
60}