78 lines
2.0 KiB
JavaScript
78 lines
2.0 KiB
JavaScript
const CACHE_NAME = 'gridtv-v2';
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// Static assets cached during installation.
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const STATIC_ASSETS = [
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'/',
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'/index.php',
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'/manifest.json',
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'/assets/fonts/fonts.css',
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'/assets/icon-192.png',
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'/assets/icon-512.png',
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'/assets/vendor/hls.min.js'
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];
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// Install: cache the static assets.
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self.addEventListener('install', e => {
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e.waitUntil(
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caches.open(CACHE_NAME)
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.then(cache => cache.addAll(STATIC_ASSETS))
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.then(() => self.skipWaiting())
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);
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});
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// Activate: remove outdated caches.
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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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Promise.all(keys.filter(k => k !== CACHE_NAME).map(k => caches.delete(k)))
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).then(() => self.clients.claim())
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);
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});
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// Fetch: choose a caching strategy based on resource type.
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self.addEventListener('fetch', e => {
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const url = new URL(e.request.url);
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// EPG/M3U feeds, the GitHub API, and version.json stay network-only.
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if (
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url.pathname.includes('xmltv') ||
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url.pathname.includes('.m3u') ||
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url.hostname === 'api.github.com' ||
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url.pathname.includes('proxy.php') ||
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url.pathname.endsWith('version.json')
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) {
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return;
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}
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// Static assets use a cache-first strategy.
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if (
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e.request.destination === 'style' ||
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e.request.destination === 'script' ||
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e.request.destination === 'font' ||
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e.request.destination === 'image' ||
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url.pathname.endsWith('.json') ||
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url.pathname.endsWith('.css') ||
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url.pathname.endsWith('.js')
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) {
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e.respondWith(
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caches.match(e.request).then(cached => cached || fetch(e.request).then(res => {
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const clone = res.clone();
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caches.open(CACHE_NAME).then(cache => cache.put(e.request, clone));
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return res;
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}))
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);
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return;
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}
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// PHP pages use network-first with cache fallback.
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e.respondWith(
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fetch(e.request)
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.then(res => {
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const clone = res.clone();
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caches.open(CACHE_NAME).then(cache => cache.put(e.request, clone));
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return res;
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})
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.catch(() => caches.match(e.request))
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);
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});
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