const CACHE = "hemx-kanban-shell-v1";
const SHELL = [
  "/",
  "/hemx.js",
  "/hemx.client.js",
  "/kanban_client.js",
  "/kanban_client_bg.wasm",
  "/app.js",
];

self.addEventListener("install", (event) => {
  event.waitUntil(caches.open(CACHE).then((cache) => cache.addAll(SHELL)).then(() => self.skipWaiting()));
});

self.addEventListener("activate", (event) => {
  event.waitUntil(
    caches.keys()
      .then((names) => Promise.all(names.filter((name) => name.startsWith("hemx-kanban-shell-") && name !== CACHE).map((name) => caches.delete(name))))
      .then(() => self.clients.claim()),
  );
});

self.addEventListener("fetch", (event) => {
  if (event.request.method !== "GET") return;
  const url = new URL(event.request.url);
  if (url.origin !== self.location.origin || !SHELL.includes(url.pathname)) return;
  event.respondWith(
    caches.match(event.request, { ignoreSearch: true }).then((cached) => cached || fetch(event.request)),
  );
});