106 lines
2.8 KiB
JavaScript
106 lines
2.8 KiB
JavaScript
const CACHE_NAME = 'brew-journal-v2';
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// Static assets to cache immediately
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const PRECACHE_ASSETS = [
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'/',
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'/index.html',
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'/manifest.json',
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'/favicon.svg',
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'/icon-192.png',
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'/icon-512.png'
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];
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// Install Event
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self.addEventListener('install', (e) => {
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e.waitUntil(
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caches.open(CACHE_NAME).then((cache) => {
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return cache.addAll(PRECACHE_ASSETS);
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})
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);
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self.skipWaiting();
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});
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// Activate Event — clean old caches and notify clients of update
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self.addEventListener('activate', (e) => {
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e.waitUntil(
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caches.keys().then((keys) => {
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return Promise.all(
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keys.map((key) => {
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if (key !== CACHE_NAME) {
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return caches.delete(key);
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}
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})
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);
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}).then(() => {
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// Take control of all open clients immediately
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return self.clients.claim();
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}).then(() => {
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// Notify all clients that a new version is now active
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return self.clients.matchAll({ type: 'window' }).then((clients) => {
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clients.forEach((client) => {
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client.postMessage({ type: 'SW_UPDATED' });
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});
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});
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})
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);
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});
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// Fetch Event
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self.addEventListener('fetch', (e) => {
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const url = new URL(e.request.url);
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// Bypass API requests - always network-only for backend API calls
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if (url.pathname.startsWith('/api/')) {
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e.respondWith(fetch(e.request));
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return;
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}
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// Network-first for HTML documents so users always get fresh markup
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if (e.request.mode === 'navigate') {
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e.respondWith(
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fetch(e.request).then((networkResponse) => {
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const responseToCache = networkResponse.clone();
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caches.open(CACHE_NAME).then((cache) => {
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cache.put(e.request, responseToCache);
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});
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return networkResponse;
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}).catch(() => {
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return caches.match(e.request);
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})
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);
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return;
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}
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// Stale-while-revalidate for other static assets
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e.respondWith(
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caches.match(e.request).then((cachedResponse) => {
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if (cachedResponse) {
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// Fetch new version in background to update cache
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fetch(e.request).then((networkResponse) => {
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if (networkResponse.status === 200) {
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caches.open(CACHE_NAME).then((cache) => {
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cache.put(e.request, networkResponse.clone());
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});
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}
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}).catch(() => {/* Ignore network errors offline */});
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return cachedResponse;
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}
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// Network fallback
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return fetch(e.request).then((networkResponse) => {
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if (!networkResponse || networkResponse.status !== 200 || networkResponse.type !== 'basic') {
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return networkResponse;
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}
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const responseToCache = networkResponse.clone();
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caches.open(CACHE_NAME).then((cache) => {
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cache.put(e.request, responseToCache);
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});
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return networkResponse;
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});
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})
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);
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});
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