const CACHE = 'posimai-dev-v1';
const SHELL = ['/'];

self.addEventListener('install', (e) => {
    e.waitUntil(caches.open(CACHE).then((c) => c.addAll(SHELL)));
    self.skipWaiting();
});

self.addEventListener('activate', (e) => {
    e.waitUntil(
        caches.keys().then((keys) =>
            Promise.all(keys.filter((k) => k !== CACHE).map((k) => caches.delete(k)))
        )
    );
    self.clients.claim();
});

// WebSocket・API レスポンスはキャッシュしない
self.addEventListener('fetch', (e) => {
    if (e.request.url.includes('/terminal')) return;
    if (new URL(e.request.url).pathname.startsWith('/api/')) return;
    e.respondWith(
        caches.match(e.request).then((r) => r || fetch(e.request))
    );
});