freezmo/public/sw.js
Martin Dvorak 2b8341c189 Use the new app icon everywhere
Source artwork committed as assets/app-icon-source.jpeg (1024x1024 navy
rounded square) and scripts/make-icons.mjs rewritten to render every icon
from it with headless Chromium:

- The master is masked at full resolution first (a rounded rect 4px inside
  the artwork's own radius), so the JPEG's anti-aliased white edge never
  survives and small sizes downscale with clean alpha.
- PWA icons (192/512) and favicon-32 keep the rounded square with
  transparent corners; apple-touch 180/167/152 are full-bleed (iOS paints
  transparency black) with the artwork zoomed 20% to crop its corners;
  maskable-512 keeps the artwork inside the 80% safe circle on a matching
  navy field.
- iOS splash screens regenerated with the new mark.
- app/favicon.ico regenerated (PNG payload in an ICO container); the old
  app/icon.svg removed so the browser tab can't fall back to it.
- Install sheet's app card now shows the real icon, so the home-screen
  icon is recognisable.
- Service worker CACHE_VERSION bumped to freezmo-v3 so installed clients
  pick up the new assets.
- README updated (source artwork + script description).

Verified: pwa 16/16, install sheet 64/64, final ux 12/12, key gate 49/49,
zoom 6/6; every icon route serves 200 and the manifest/head reference the
new files.
2026-10-08 00:38:54 +00:00

97 lines
2.8 KiB
JavaScript

/**
* Freezmo service worker (production only).
*
* Strategy, deliberately conservative:
* - API routes are never cached and never intercepted.
* - Navigations: network first, falling back to the cached shell, then /offline.
* - /_next/static + icons: stale-while-revalidate (fast, self-healing).
* - Everything else: straight to the network.
*
* Bumping CACHE_VERSION is how a new deploy invalidates old assets.
*/
const CACHE_VERSION = "freezmo-v3";
const SHELL_CACHE = `${CACHE_VERSION}-shell`;
const ASSET_CACHE = `${CACHE_VERSION}-assets`;
const SHELL_ASSETS = [
"/",
"/offline",
"/manifest.webmanifest",
"/icons/icon-192.png",
"/icons/icon-512.png",
"/icons/apple-touch-icon.png",
];
self.addEventListener("install", (event) => {
event.waitUntil(
(async () => {
const cache = await caches.open(SHELL_CACHE);
await Promise.allSettled(SHELL_ASSETS.map((url) => cache.add(new Request(url, { cache: "reload" }))));
await self.skipWaiting();
})(),
);
});
self.addEventListener("activate", (event) => {
event.waitUntil(
(async () => {
const names = await caches.keys();
await Promise.all(
names.filter((name) => !name.startsWith(CACHE_VERSION)).map((name) => caches.delete(name)),
);
await self.clients.claim();
})(),
);
});
function isCacheableAsset(url) {
return (
url.pathname.startsWith("/_next/static/") ||
url.pathname.startsWith("/icons/") ||
url.pathname === "/manifest.webmanifest" ||
/\.(?:css|js|png|jpg|jpeg|svg|webp|woff2?)$/.test(url.pathname)
);
}
self.addEventListener("fetch", (event) => {
const request = event.request;
if (request.method !== "GET") return;
const url = new URL(request.url);
if (url.origin !== self.location.origin) return;
// Never touch the API: keys, notes and generated decks must always be live.
if (url.pathname.startsWith("/api/")) return;
if (request.mode === "navigate") {
event.respondWith(
(async () => {
try {
const response = await fetch(request);
const cache = await caches.open(SHELL_CACHE);
cache.put("/", response.clone()).catch(() => {});
return response;
} catch {
const cache = await caches.open(SHELL_CACHE);
return (await cache.match("/")) ?? (await cache.match("/offline")) ?? Response.error();
}
})(),
);
return;
}
if (isCacheableAsset(url)) {
event.respondWith(
(async () => {
const cache = await caches.open(ASSET_CACHE);
const cached = await cache.match(request);
const network = fetch(request)
.then((response) => {
if (response.ok) cache.put(request, response.clone()).catch(() => {});
return response;
})
.catch(() => cached);
return cached ?? network;
})(),
);
}
});