39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
/* Service Worker — SLC-Workshop Companion (App-Shell, offline-first) */
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const CACHE = "slc-companion-v12";
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const SHELL = ["./", "index.html", "manifest.webmanifest", "icon.svg"];
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// Action-Card-Grafiken (cards/s<service>-c<change>.png) fuer Offline vorab cachen (alle 30).
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const CARDS = [];
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for (let s = 0; s <= 5; s++) for (let c = 0; c <= 3; c++) {
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CARDS.push(`cards/s${s}-c${c}.png`);
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}
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const ASSETS = SHELL.concat(CARDS);
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self.addEventListener("install", (e) => {
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e.waitUntil(
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caches.open(CACHE).then((c) => c.addAll(ASSETS)).then(() => self.skipWaiting())
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);
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});
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self.addEventListener("activate", (e) => {
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e.waitUntil(
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caches.keys()
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.then((ks) => Promise.all(ks.filter((k) => k !== CACHE).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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self.addEventListener("fetch", (e) => {
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if (e.request.method !== "GET") return;
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e.respondWith(
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caches.match(e.request).then((hit) =>
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hit ||
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fetch(e.request)
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.then((resp) => {
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const copy = resp.clone();
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caches.open(CACHE).then((c) => c.put(e.request, copy));
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return resp;
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})
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.catch(() => caches.match("index.html"))
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)
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);
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});
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