131 lines
4.1 KiB
JavaScript
131 lines
4.1 KiB
JavaScript
// static/sw.js
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const CACHE_VERSION = 'elemes-v10';
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const STATIC_CACHE = `${CACHE_VERSION}-static`;
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const API_CACHE = `${CACHE_VERSION}-api`;
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const ASSET_CACHE = `${CACHE_VERSION}-assets`;
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// Assets yang di-precache (Vite immutable + critical)
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const PRECACHE_URLS = [
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'/',
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'/manifest.json',
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];
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// Install: precache minimal assets
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self.addEventListener('install', (event) => {
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event.waitUntil(
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caches.open(STATIC_CACHE).then(cache => cache.addAll(PRECACHE_URLS))
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.then(() => self.skipWaiting())
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);
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});
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// Activate: hapus cache lama
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self.addEventListener('activate', (event) => {
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event.waitUntil(
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caches.keys().then(keys =>
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Promise.all(keys
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.filter(k => k.startsWith('elemes-') && k !== STATIC_CACHE && k !== API_CACHE && k !== ASSET_CACHE)
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.map(k => caches.delete(k))
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)
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).then(() => self.clients.claim())
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);
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});
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self.addEventListener('fetch', (event) => {
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const { request } = event;
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const url = new URL(request.url);
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// Hanya handle GET
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if (request.method !== 'GET') return;
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// NetworkOnly: API yang tidak boleh di-cache
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if (url.pathname.startsWith('/api/compile') ||
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url.pathname.startsWith('/api/track-progress') ||
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url.pathname.startsWith('/api/login') ||
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url.pathname.startsWith('/api/logout')) {
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return; // biarkan browser handle
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}
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// CacheFirst: Static assets (Vite immutable dengan hash)
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if (url.pathname.startsWith('/_app/immutable/')) {
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event.respondWith(cacheFirst(request, STATIC_CACHE, 365));
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return;
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}
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// CacheFirst: Gambar lesson (assets)
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if (url.pathname.startsWith('/assets/')) {
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event.respondWith(cacheFirst(request, ASSET_CACHE, 7));
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return;
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}
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// CacheFirst: Font files (immutable)
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if (url.hostname === 'fonts.gstatic.com') {
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event.respondWith(cacheFirst(request, STATIC_CACHE, 365));
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return;
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}
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// NetworkFirst: API lesson data (cache 6 jam)
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if (url.pathname.startsWith('/api/lesson/') && url.pathname.endsWith('.json')) {
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event.respondWith(networkFirst(request, API_CACHE, 6 * 60));
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return;
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}
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// NetworkFirst: API lesson list (cache 1 jam)
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if (url.pathname.startsWith('/api/lessons')) {
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event.respondWith(networkFirst(request, API_CACHE, 60));
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return;
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}
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// StaleWhileRevalidate: HTML pages
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if (request.headers.get('accept')?.includes('text/html')) {
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event.respondWith(staleWhileRevalidate(request, STATIC_CACHE));
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return;
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}
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// StaleWhileRevalidate: Google Fonts CSS, KaTeX
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if (url.hostname === 'fonts.googleapis.com' || url.hostname === 'cdn.jsdelivr.net') {
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event.respondWith(staleWhileRevalidate(request, STATIC_CACHE));
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return;
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}
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});
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// ── Helpers ──────────────────────────────────────────────────────
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async function cacheFirst(request, cacheName, maxAgeDays = 7) {
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const cache = await caches.open(cacheName);
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const cached = await cache.match(request);
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if (cached) return cached;
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const response = await fetch(request);
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if (response.ok) cache.put(request, response.clone());
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return response;
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}
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async function networkFirst(request, cacheName, maxAgeMinutes = 60) {
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const cache = await caches.open(cacheName);
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try {
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const response = await fetch(request);
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if (response.ok) cache.put(request, response.clone());
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return response;
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} catch {
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const cached = await cache.match(request);
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if (cached) return cached;
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return new Response(JSON.stringify({ error: 'Offline', cached: false }), {
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status: 503,
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headers: { 'Content-Type': 'application/json' }
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});
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}
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}
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async function staleWhileRevalidate(request, cacheName) {
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const cache = await caches.open(cacheName);
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const cached = await cache.match(request);
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const networkFetch = fetch(request).then(response => {
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if (response.ok) cache.put(request, response.clone());
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return response;
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}).catch(() => null);
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return cached || (await networkFetch) ||
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new Response('Offline — halaman ini belum pernah dibuka sebelumnya.', {
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status: 503,
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headers: { 'Content-Type': 'text/plain; charset=utf-8' }
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});
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}
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