sw.js

// Bump the version number to force phones to clear their old cache
const CACHE_NAME = 'rubbersoul-v3';
const ASSETS_TO_CACHE = [
  './',
  './index.html',
  './manifest.json',
  './icon-192.png',
  './icon-512.png'
];

// Install the service worker and cache the files
self.addEventListener('install', (event) => {
  self.skipWaiting(); // Force the waiting service worker to become the active service worker
  event.waitUntil(
    caches.open(CACHE_NAME).then((cache) => {
      return cache.addAll(ASSETS_TO_CACHE);
    })
  );
});

// Clean up old caches when the new version takes over
self.addEventListener('activate', (event) => {
  event.waitUntil(
    caches.keys().then((cacheNames) => {
      return Promise.all(
        cacheNames.map((cache) => {
          if (cache !== CACHE_NAME) {
            return caches.delete(cache);
          }
        })
      );
    })
  );
});

// Network-First Strategy
self.addEventListener('fetch', (event) => {
  event.respondWith(
    fetch(event.request).then((response) => {
      // If the network is good, save a fresh copy to the cache and return the response
      return caches.open(CACHE_NAME).then((cache) => {
        cache.put(event.request, response.clone());
        return response;
      });
    }).catch(() => {
      // If the network fails (offline), fall back to the cache
      return caches.match(event.request);
    })
  );
});