54 lines
1.7 KiB
JavaScript
54 lines
1.7 KiB
JavaScript
const appName = '{{ name }}'
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const appCacheName = '{{ name }}-{{ uuid }}';
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const preCacheFiles = [{{ pre_cache }}];
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self.addEventListener('install', (e) => {
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console.log('[Service Worker] Install');
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self.skipWaiting();
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e.waitUntil((async () => {
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const cacheNames = await caches.keys();
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for (const cacheName of cacheNames) {
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if (cacheName.startsWith(appName) && cacheName !== appCacheName) {
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console.log(`[Service Worker] Delete old cache ${cacheName}`);
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caches.delete(cacheName);
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}
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}
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const cache = await caches.open(appCacheName);
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console.log('[Service Worker] Caching ');
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preCacheFiles.forEach(async (cacheFile) => {
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const request = new Request(cacheFile);
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const response = await fetch(request);
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if (response.ok || response.type == 'opaque') {
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cache.put(request, response);
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}
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})
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})());
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});
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self.addEventListener('activate', (event) => {
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console.log('[Service Worker] Activating');
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return self.clients.claim();
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});
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self.addEventListener('fetch', (e) => {
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if (e.request.method !== 'GET') {
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return
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}
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e.respondWith((async () => {
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const cache = await caches.open(appCacheName);
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let response = await cache.match(e.request);
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console.log(`[Service Worker] Fetching resource: ${e.request.url}`);
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if (response) {
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return response;
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}
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response = await fetch(e.request);
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if (!response.ok && !(response.type == 'opaque')) {
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throw Error('[Service Worker] Fetching resource failed with response: ' + response.status);
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}
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console.log(`[Service Worker] Caching new resource: ${e.request.url}`);
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cache.put(e.request, response.clone());
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return response;
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})());
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});
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