// Updated service worker code - sw.js
const CACHE_NAME = 'timer-cache-v1';
const urlsToCache = [
  '/',
  '/index.html',
  '/styles.css',
  '/apps.js',
  '/audio.js',
  '/icons/android-chrome-192x192.png',
  '/icons/android-chrome-512x512.png',
  '/icons/apple-touch-icon.png',
  '/icons/favicon-32x32.png',
  '/icons/favicon-16x16.png',
  '/favicon.ico',
  '/manifest.json',
  '/site.webmanifest'
];

self.addEventListener('install', event => {
  event.waitUntil(
    caches.open(CACHE_NAME)
      .then(cache => {
        console.log('Opened cache');
        // Use individual cache.add calls in a Promise.all to handle failures better
        return Promise.all(
          urlsToCache.map(url => {
            return cache.add(url).catch(err => {
              console.log('Failed to cache:', url, err);
              // Continue despite individual failures
              return Promise.resolve();
            });
          })
        );
      })
  );
});

self.addEventListener('fetch', event => {
  event.respondWith(
    caches.match(event.request)
      .then(response => {
        // Cache hit - return response
        if (response) {
          return response;
        }
        return fetch(event.request);
      })
      .catch(err => {
        console.log('Fetch handler failed:', err);
      })
  );
});