73 lines
2.4 KiB
JavaScript
73 lines
2.4 KiB
JavaScript
/* clip2md service worker.
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Pages (navigations, .html): network first, cache only as offline fallback —
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so new or changed pages are never frozen for existing users.
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Static assets (vendor, fonts, icons): cache first. Bump CACHE on asset changes. */
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var CACHE = 'clip2md-v5';
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var ASSETS = [
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'/',
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'/index.html',
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'/impressum.html',
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'/datenschutz.html',
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'/legal.css',
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'/icon.svg',
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'/icon-192.png',
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'/apple-touch-icon.png',
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'/manifest.webmanifest',
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'/vendor/turndown.js',
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'/vendor/turndown-plugin-gfm.js',
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'/vendor/marked.umd.js',
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'/vendor/purify.min.js',
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'/vendor/fonts/space-grotesk-latin-400-normal.woff2',
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'/vendor/fonts/space-grotesk-latin-500-normal.woff2',
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'/vendor/fonts/space-grotesk-latin-700-normal.woff2',
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'/vendor/fonts/space-mono-latin-400-normal.woff2',
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'/vendor/fonts/space-mono-latin-700-normal.woff2'
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];
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self.addEventListener('install', function (e) {
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self.skipWaiting();
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e.waitUntil(caches.open(CACHE).then(function (c) { return c.addAll(ASSETS); }));
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});
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self.addEventListener('activate', function (e) {
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e.waitUntil(
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caches.keys().then(function (keys) {
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return Promise.all(keys.filter(function (k) { return k !== CACHE; }).map(function (k) { return caches.delete(k); }));
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}).then(function () { return self.clients.claim(); })
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);
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});
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function isPage(req, url) {
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return req.mode === 'navigate' || req.destination === 'document' || /\.html$/.test(url.pathname) || url.pathname === '/';
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}
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self.addEventListener('fetch', function (e) {
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var req = e.request;
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if (req.method !== 'GET') return;
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var url = new URL(req.url);
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if (url.origin !== self.location.origin) return; // external links (PayPal, GitHub) untouched
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if (isPage(req, url)) {
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e.respondWith(
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fetch(req).then(function (res) {
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if (res && res.ok) { var copy = res.clone(); caches.open(CACHE).then(function (c) { c.put(req, copy); }); }
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return res;
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}).catch(function () {
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return caches.match(req).then(function (hit) {
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return hit || caches.match(url.pathname.replace(/\/$/, '/index.html')) || caches.match('/index.html');
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});
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})
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);
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return;
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}
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e.respondWith(
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caches.match(req).then(function (hit) {
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return hit || fetch(req).then(function (res) {
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if (res && res.ok) { var copy = res.clone(); caches.open(CACHE).then(function (c) { c.put(req, copy); }); }
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return res;
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});
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})
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);
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});
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