Files
NestQuest/admin/public/sw.js
T
2026-09-24 00:08:58 -04:00

89 lines
2.7 KiB
JavaScript

/* NestQuest Admin service worker — hand-written, served from the site root.
Precaches the app shell, serves static assets cache-first, and falls back
to the cached shell for navigations when offline. Only same-origin GET
requests are handled; cross-origin requests (Authentik, the API host) are
never intercepted or cached.
The build (vite-sw-plugin.ts) replaces PRECACHE_ASSETS with the hashed
bundles referenced by index.html and the revision marker with a content
hash, so each release installs a new worker with fresh caches. */
const REVISION = "__NQ_BUILD_REVISION__";
const CACHE_PREFIX = "nestquest-admin-";
const SHELL_CACHE = `${CACHE_PREFIX}shell-${REVISION}`;
const RUNTIME_CACHE = `${CACHE_PREFIX}runtime-${REVISION}`;
const CURRENT_CACHES = [SHELL_CACHE, RUNTIME_CACHE];
const PRECACHE_ASSETS = [];
const SHELL_URLS = [
...new Set([
"/",
"/index.html",
"/manifest.webmanifest",
"/icons/icon-192.png",
"/icons/icon-512.png",
"/icons/icon-maskable-512.png",
...PRECACHE_ASSETS,
]),
];
// Request destinations treated as static assets (cache-first). Anything else
// same-origin (e.g. API calls) goes straight to the network.
const STATIC_DESTINATIONS = ["script", "style", "image", "font", "manifest"];
self.addEventListener("install", (event) => {
event.waitUntil(
caches
.open(SHELL_CACHE)
.then((cache) => cache.addAll(SHELL_URLS))
.then(() => self.skipWaiting()),
);
});
self.addEventListener("activate", (event) => {
event.waitUntil(
caches
.keys()
.then((keys) =>
Promise.all(
keys
.filter((key) => key.startsWith(CACHE_PREFIX) && !CURRENT_CACHES.includes(key))
.map((key) => caches.delete(key)),
),
)
.then(() => self.clients.claim()),
);
});
self.addEventListener("fetch", (event) => {
const request = event.request;
if (request.method !== "GET") return;
if (new URL(request.url).origin !== self.location.origin) return;
if (request.mode === "navigate") {
event.respondWith(
fetch(request).catch(() =>
caches.match("/index.html", { cacheName: SHELL_CACHE }).then(
(cached) => cached || Response.error(),
),
),
);
return;
}
if (STATIC_DESTINATIONS.includes(request.destination)) {
event.respondWith(cacheFirst(request));
}
});
async function cacheFirst(request) {
const cached = await caches.match(request);
if (cached) return cached;
const response = await fetch(request);
if (response.ok && response.type === "basic") {
const cache = await caches.open(RUNTIME_CACHE);
await cache.put(request, response.clone());
}
return response;
}