const CACHE_NAME = "localesp-shell-v2";
const SHELL_ASSETS = [
  "/",
  "/manifest.webmanifest",
  "/icon-192.png",
  "/icon-512.png",
  "/icon-512-maskable.png",
  "/apple-touch-icon.png",
  "/favicon-32.png",
  "/logo-localesp.png",
  "/logo-localesp@2x.png",
];

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

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

// Network-first para la API (los datos deben estar frescos); cache-first
// para el resto del shell estático, para que la app abra offline.
self.addEventListener("fetch", (event) => {
  const url = new URL(event.request.url);

  if (event.request.method !== "GET") return;

  if (url.pathname.startsWith("/api/")) {
    event.respondWith(
      fetch(event.request).catch(() => caches.match(event.request))
    );
    return;
  }

  event.respondWith(
    caches.match(event.request).then((cached) => {
      const network = fetch(event.request)
        .then((response) => {
          const clone = response.clone();
          caches.open(CACHE_NAME).then((cache) => cache.put(event.request, clone));
          return response;
        })
        .catch(() => cached);
      return cached || network;
    })
  );
});