81 lines
2.3 KiB
JavaScript
81 lines
2.3 KiB
JavaScript
const CACHE_NAME = 'timetracker-v3'; // Update this if you change anything!
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// Cache only local assets here. Avoid opaque external resources in addAll().
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const urlsToCache = [
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'/',
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'/index.html',
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'/manifest.json'
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// Add local JS/CSS files here if you have them, e.g., '/main.js', '/styles.css'
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];
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// Install: Cache core files
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self.addEventListener('install', (event) => {
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console.log('[SW] Install event');
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event.waitUntil(
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caches.open(CACHE_NAME)
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.then(cache => {
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console.log('[SW] Caching app shell:', urlsToCache);
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return cache.addAll(urlsToCache);
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})
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.catch(err => {
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console.error('[SW] Install cache error:', err);
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})
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);
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});
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// Activate: Clean up old caches
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self.addEventListener('activate', (event) => {
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console.log('[SW] Activate event');
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event.waitUntil(
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caches.keys().then(cacheNames => {
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return Promise.all(
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cacheNames.map(name => {
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if (name !== CACHE_NAME) {
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console.log('[SW] Deleting old cache:', name);
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return caches.delete(name);
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}
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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: Cache-first strategy with dynamic caching
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self.addEventListener('fetch', (event) => {
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if (event.request.method !== 'GET') return;
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console.log('[SW] Fetch request:', event.request.url);
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event.respondWith(
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caches.match(event.request)
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.then(cachedResponse => {
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if (cachedResponse) {
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console.log('[SW] Serving from cache:', event.request.url);
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return cachedResponse;
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}
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return fetch(event.request)
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.then(networkResponse => {
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if (
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networkResponse &&
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networkResponse.status === 200 &&
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networkResponse.type !== 'opaque'
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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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console.log('[SW] Dynamically caching:', event.request.url);
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cache.put(event.request, responseToCache);
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});
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}
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return networkResponse;
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})
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.catch(err => {
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console.error('[SW] Network request failed:', event.request.url, err);
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// Optionally, return a fallback page or image here
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});
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})
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);
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});
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