47 lines
1.8 KiB
JavaScript
47 lines
1.8 KiB
JavaScript
const SHELL_CACHE='fixfin-shell-v3.25';
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const DATA_CACHE='fixfin-data-v1';
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const APP_SHELL=['/','/manifest.webmanifest','/icons/icon-192.png','/icons/icon-512.png','/icons/apple-touch-icon.png'];
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self.addEventListener('install',event=>{
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event.waitUntil(caches.open(SHELL_CACHE).then(cache=>cache.addAll(APP_SHELL)).then(()=>self.skipWaiting()));
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});
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self.addEventListener('activate',event=>{
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event.waitUntil(Promise.all([
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caches.keys().then(keys=>Promise.all(keys.filter(key=>key.startsWith('fixfin-shell-')&&key!==SHELL_CACHE).map(key=>caches.delete(key)))),
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self.clients.claim(),
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]));
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});
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self.addEventListener('fetch',event=>{
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const request=event.request;
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if(request.method!=='GET') return;
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const url=new URL(request.url);
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if(url.origin!==self.location.origin) return;
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if(url.pathname==='/api/data') {
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event.respondWith(fetch(request).then(response=>{
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if(response.ok) caches.open(DATA_CACHE).then(cache=>cache.put(request,response.clone()));
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return response;
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}).catch(()=>caches.match(request).then(cached=>cached||new Response(JSON.stringify({error:'Offline und keine zwischengespeicherten Daten verfügbar.'}),{status:503,headers:{'Content-Type':'application/json'}}))));
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return;
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}
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if(url.pathname.startsWith('/api/')) return;
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if(request.mode==='navigate') {
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event.respondWith(fetch(request).then(response=>{
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caches.open(SHELL_CACHE).then(cache=>cache.put('/',response.clone()));
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return response;
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}).catch(()=>caches.match('/')));
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return;
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}
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event.respondWith(caches.match(request).then(cached=>{
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const network=fetch(request).then(response=>{
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if(response.ok) caches.open(SHELL_CACHE).then(cache=>cache.put(request,response.clone()));
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return response;
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}).catch(()=>cached);
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return cached||network;
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}));
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});
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