63 lines
1.7 KiB
JavaScript
63 lines
1.7 KiB
JavaScript
const CACHE_NAME = 'erp-shell-v1';
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const OFFLINE_URL = '/offline.html';
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const PRECACHE_URLS = ['/', '/index.html', '/manifest.webmanifest', '/pwa-icon.svg', OFFLINE_URL];
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self.addEventListener('install', (event) => {
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event.waitUntil(
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caches.open(CACHE_NAME).then((cache) => cache.addAll(PRECACHE_URLS))
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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((cacheNames) =>
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Promise.all(
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cacheNames
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.filter((name) => name !== CACHE_NAME)
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.map((name) => caches.delete(name))
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)
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)
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);
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self.clients.claim();
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});
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self.addEventListener('fetch', (event) => {
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const { request } = event;
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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 (request.mode === 'navigate') {
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event.respondWith(
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fetch(request)
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.then((response) => {
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const copy = response.clone();
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caches.open(CACHE_NAME).then((cache) => cache.put(request, copy));
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return response;
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})
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.catch(async () => {
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const cached = await caches.match(request);
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return cached || caches.match(OFFLINE_URL);
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})
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);
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return;
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}
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if (['style', 'script', 'worker', 'font', 'image'].includes(request.destination)) {
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event.respondWith(
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caches.match(request).then((cached) => {
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const networkFetch = fetch(request)
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.then((response) => {
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const copy = response.clone();
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caches.open(CACHE_NAME).then((cache) => cache.put(request, copy));
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return response;
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})
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.catch(() => cached);
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return cached || networkFetch;
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})
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);
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}
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});
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