sw.js

// Service Worker: BakeCost Studio (v2 - English Release)
const CACHE_NAME = 'bakecost-en-v2';

self.addEventListener('install', (event) => {
  self.skipWaiting();
});

self.addEventListener('activate', (event) => {
  event.waitUntil(
    caches.keys().then((keys) => {
      return Promise.all(
        keys.map((key) => {
          if (key !== CACHE_NAME) {
            return caches.delete(key);
          }
        })
      );
    }).then(() => self.clients.claim())
  );
});

// Network-first strategy to prevent stale caches
self.addEventListener('fetch', (event) => {
  event.respondWith(
    fetch(event.request)
      .then((networkResponse) => {
        if (networkResponse && networkResponse.status === 200) {
          const responseClone = networkResponse.clone();
          caches.open(CACHE_NAME).then((cache) => {
            cache.put(event.request, responseClone);
          });
        }
        return networkResponse;
      })
      .catch(() => caches.match(event.request))
  );
});