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backend.js (1554B)

      1 function 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 
     22 function 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 
     31 function 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 
     43 function 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 
     54 function register(username, email, password) {
     55 	return callBackend('POST', 'register', { username, email, password });
     56 }
     57 
     58 function logout() {
     59 	localStorage.removeItem('token');
     60 }