sw.js

// CyberMax game service worker: the game works offline after the first visit. Cache-first for the game's own files,
// network-first for the page itself (so updates arrive), never caches API calls or other sites. (c) 2026 CyberMax.
const GAME = 'pawfoil';
const CACHE = `cmx-${GAME}-aef686760a`;
const FILES = ["index.html", "cmx.js", "core.js", "fun.css", "funpass.js", "game.js", "icon-192.png", "icon-512.png", "icon-maskable.png", "icon.svg", "index.html", "manifest.webmanifest", "sample.jpg", "style.css"];

self.addEventListener('install', (e) => {
  e.waitUntil(caches.open(CACHE).then((c) => c.addAll(FILES)).then(() => self.skipWaiting()));
});
self.addEventListener('activate', (e) => {
  e.waitUntil(caches.keys().then((keys) => Promise.all(keys.filter((k) => k.startsWith(`cmx-${GAME}-`) && k !== CACHE).map((k) => caches.delete(k)))).then(() => self.clients.claim()));
});
self.addEventListener('fetch', (e) => {
  const u = new URL(e.request.url);
  if (e.request.method !== 'GET' || u.origin !== location.origin || !u.pathname.startsWith(new URL(self.registration.scope).pathname)) return;
  if (e.request.mode === 'navigate') {
    e.respondWith(fetch(e.request).then((r) => { const c = r.clone(); caches.open(CACHE).then((x) => x.put(u.pathname, c)); return r; })
      .catch(() => caches.match(u.pathname).then((r) => r || caches.match('index.html'))));
    return;
  }
  e.respondWith(caches.match(e.request, { ignoreSearch: true }).then((r) => r || fetch(e.request).then((res) => {
    if (res.ok) { const c = res.clone(); caches.open(CACHE).then((x) => x.put(e.request, c)); }
    return res;
  })));
});