121 lines
3.1 KiB
TypeScript
121 lines
3.1 KiB
TypeScript
/**
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* Shared authentication state using Svelte writable stores.
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*
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* Usage in .svelte files:
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* import { authToken, authStudentName, authLoggedIn, auth } from '$stores/auth';
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* // Use $authLoggedIn, $authStudentName, $authToken for reactive values
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* // Use auth.init(), auth.login(), auth.logout() for actions
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*/
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import { writable, get } from 'svelte/store';
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import { validateToken, login as apiLogin, logout as apiLogout } from '$services/api';
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const STORAGE_KEY = 'student_token';
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const LAST_ACTIVE_KEY = 'student_last_active';
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const MAX_INACTIVITY = 24 * 60 * 60 * 1000; // 1 day in ms
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export const authToken = writable('');
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export const authStudentName = writable('');
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export const authLoggedIn = writable(false);
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export const authIsTeacher = writable(false);
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function clearAllCookies() {
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if (typeof document === 'undefined') return;
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const cookies = document.cookie.split(';');
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for (let i = 0; i < cookies.length; i++) {
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const cookie = cookies[i];
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const eqPos = cookie.indexOf('=');
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const name = eqPos > -1 ? cookie.substr(0, eqPos).trim() : cookie.trim();
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document.cookie = name + '=;expires=Thu, 01 Jan 1970 00:00:00 GMT;path=/';
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}
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}
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function clearAuthData() {
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clearAllCookies();
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localStorage.removeItem(STORAGE_KEY);
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localStorage.removeItem(LAST_ACTIVE_KEY);
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sessionStorage.clear();
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}
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function updateLastActive() {
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if (typeof window !== 'undefined') {
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localStorage.setItem(LAST_ACTIVE_KEY, Date.now().toString());
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}
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}
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export const auth = {
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/** Current token value (non-reactive). */
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get token() { return get(authToken); },
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get isLoggedIn() { return get(authLoggedIn); },
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/** Restore session from localStorage on app mount. */
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async init() {
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if (typeof window === 'undefined') return;
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const saved = localStorage.getItem(STORAGE_KEY);
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const lastActive = localStorage.getItem(LAST_ACTIVE_KEY);
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if (!saved) return;
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// Check for 1 day inactivity
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if (lastActive) {
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const inactiveTime = Date.now() - parseInt(lastActive, 10);
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if (inactiveTime > MAX_INACTIVITY) {
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clearAuthData();
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return;
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}
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}
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try {
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const res = await validateToken(saved);
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if (res.success && res.student_name) {
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authToken.set(saved);
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authStudentName.set(res.student_name);
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authLoggedIn.set(true);
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authIsTeacher.set(res.is_teacher ?? false);
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updateLastActive();
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} else {
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clearAuthData();
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}
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} catch {
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clearAuthData();
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}
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},
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async login(inputToken: string) {
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clearAuthData();
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const res = await apiLogin(inputToken);
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if (res.success && res.student_name) {
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authToken.set(inputToken);
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authStudentName.set(res.student_name);
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authLoggedIn.set(true);
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authIsTeacher.set(res.is_teacher ?? false);
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localStorage.setItem(STORAGE_KEY, inputToken);
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updateLastActive();
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}
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return res;
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},
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async logout() {
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try {
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await apiLogout();
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} catch {
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// ignore logout failure, proceed to clear local state
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}
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authToken.set('');
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authStudentName.set('');
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authLoggedIn.set(false);
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authIsTeacher.set(false);
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clearAuthData();
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location.reload();
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},
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/** Update activity timestamp. Call this on user interactions. */
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recordActivity() {
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if (get(authLoggedIn)) {
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updateLastActive();
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}
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}
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};
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