const CACHE_NAME = 'cuckoosweepers-v2'; 
const urlsToCache = [
  '/',
  '/index.html',
  '/game.js',      
  '/icon.jpg', 
  '/manifest.json',
];

self.addEventListener('install', event => {
  event.waitUntil(
    caches.open(CACHE_NAME).then(cache => {
      console.log('Opened cache');
      return cache.addAll(urlsToCache).catch(error => {
        console.error('Failed to cache resources:', error);
      });
    })
  );
});

self.addEventListener('fetch', event => {
  event.respondWith(
    caches.match(event.request).then(response => {
      if (response) {
        console.log('Serving from cache:', event.request.url);
        return response;
      }
      console.log('Fetching from network:', event.request.url);
      return fetch(event.request);
    }).catch(error => {
      console.error('Fetch failed:', error);
    })
  );
});

self.addEventListener('activate', event => {
  const cacheWhitelist = [CACHE_NAME];
  event.waitUntil(
    caches.keys().then(cacheNames => {
      return Promise.all(
        cacheNames.map(cacheName => {
          if (!cacheWhitelist.includes(cacheName)) {
            console.log('Deleting old cache:', cacheName);
            return caches.delete(cacheName);
          }
        })
      );
    })
  );
});