43 lines
1.3 KiB
JavaScript
43 lines
1.3 KiB
JavaScript
// Minimal service worker for Guest PWA queue sync
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self.addEventListener('install', (event) => {
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self.skipWaiting();
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});
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self.addEventListener('activate', (event) => {
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event.waitUntil(self.clients.claim());
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});
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self.addEventListener('fetch', (event) => {
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const req = event.request;
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if (req.method !== 'GET' || !req.url.startsWith(self.location.origin)) return;
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event.respondWith((async () => {
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const cache = await caches.open('guest-runtime');
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const cached = await cache.match(req);
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if (cached) return cached;
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try {
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const res = await fetch(req);
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// Cache static assets and images
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const ct = res.headers.get('content-type') || '';
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if (res.ok && (ct.includes('text/css') || ct.includes('javascript') || ct.startsWith('image/'))) {
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cache.put(req, res.clone());
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}
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return res;
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} catch (e) {
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return cached || new Response('Offline', { status: 503 });
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}
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})());
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});
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self.addEventListener('sync', (event) => {
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if (event.tag === 'upload-queue') {
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event.waitUntil(
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(async () => {
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const clients = await self.clients.matchAll({ includeUncontrolled: true, type: 'window' });
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for (const client of clients) {
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client.postMessage({ type: 'sync-queue' });
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}
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})()
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);
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}
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});
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