sw.js

const CACHE_NAME = 'corax-colab-v1.3';
const urlsToCache = [
  '/',
  '/index.html',
  '/manifest.json',
  '/styles.css',
  '/app.js',
  '/images/logo.png',
  '/images/hero-bg.svg',
  '/images/ai-illustration.svg',
  '/images/blockchain-illustration.svg',
  '/images/automation-illustration.svg',
  'https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;900&display=swap'
];

// Install event
self.addEventListener('install', (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME)
      .then((cache) => {
        console.log('Opened cache');
        return cache.addAll(urlsToCache);
      })
  );
});

// Fetch event
self.addEventListener('fetch', (event) => {
  // Skip cross-origin requests and GitHub API calls for fresh data
  if (!event.request.url.startsWith(self.location.origin) ||
      event.request.url.includes('api.github.com')) {
    return;
  }

  event.respondWith(
    caches.match(event.request)
      .then((response) => {
        if (response) {
          return response;
        }
        return fetch(event.request).then((networkResponse) => {
          // Dynamically cache fetched resources to improve offline support
          if (networkResponse && networkResponse.status === 200 && networkResponse.type === 'basic') {
            const responseToCache = networkResponse.clone();
            caches.open(CACHE_NAME).then((cache) => {
              cache.put(event.request, responseToCache);
            });
          }
          return networkResponse;
        });
      })
  );
});

// Activate event - cleanup old caches
self.addEventListener('activate', (event) => {
  event.waitUntil(
    caches.keys().then((cacheNames) => {
      return Promise.all(
        cacheNames.map((cacheName) => {
          if (cacheName !== CACHE_NAME) {
            console.log('Deleting old cache:', cacheName);
            return caches.delete(cacheName);
          }
        })
      );
    })
  );
});

// Background sync for offline actions
self.addEventListener('sync', (event) => {
  if (event.tag === 'background-sync') {
    event.waitUntil(doBackgroundSync());
  }
});

function doBackgroundSync() {
  // Could sync offline form submissions, analytics, etc.
  return Promise.resolve();
}