28 lines
773 B
JavaScript
28 lines
773 B
JavaScript
// Service Worker: Offline-Fallback für Portal-Selektor
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const CACHE_NAME = 'portal-offline-v3';
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self.addEventListener('install', event => {
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event.waitUntil(
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caches.open(CACHE_NAME)
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.then(cache => cache.add('offline.html'))
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.catch(err => console.warn('Offline-Seite konnte nicht gecacht werden:', err))
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);
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self.skipWaiting();
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});
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self.addEventListener('activate', event => {
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event.waitUntil(
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caches.keys().then(names =>
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Promise.all(names.filter(n => n !== CACHE_NAME).map(n => caches.delete(n)))
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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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if (event.request.mode === 'navigate') {
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event.respondWith(
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fetch(event.request).catch(() => caches.match('offline.html'))
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);
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}
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});
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