24ad131221
Use a new name for this template/frontend variable to make it distinct from the server variable StaticURLPrefix.
54 lines
1.6 KiB
JavaScript
54 lines
1.6 KiB
JavaScript
const {UseServiceWorker, AppSubUrl, AppVer} = window.config;
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const cachePrefix = 'static-cache-v'; // actual version is set in the service worker script
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async function unregister() {
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const registrations = await navigator.serviceWorker.getRegistrations();
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await Promise.all(registrations.map((registration) => {
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return registration.active && registration.unregister();
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}));
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}
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async function invalidateCache() {
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const cacheKeys = await caches.keys();
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await Promise.all(cacheKeys.map((key) => {
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return key.startsWith(cachePrefix) && caches.delete(key);
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}));
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}
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async function checkCacheValidity() {
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const cacheKey = AppVer;
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const storedCacheKey = localStorage.getItem('staticCacheKey');
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// invalidate cache if it belongs to a different gitea version
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if (cacheKey && storedCacheKey !== cacheKey) {
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await invalidateCache();
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localStorage.setItem('staticCacheKey', cacheKey);
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}
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}
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export default async function initServiceWorker() {
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if (!('serviceWorker' in navigator)) return;
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if (UseServiceWorker) {
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try {
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// normally we'd serve the service worker as a static asset from AssetUrlPrefix but
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// the spec strictly requires it to be same-origin so it has to be AppSubUrl to work
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await Promise.all([
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checkCacheValidity(),
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navigator.serviceWorker.register(`${AppSubUrl}/assets/serviceworker.js`),
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]);
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} catch (err) {
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console.error(err);
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await Promise.all([
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invalidateCache(),
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unregister(),
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]);
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}
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} else {
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await Promise.all([
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invalidateCache(),
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unregister(),
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]);
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}
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}
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