// Service worker - Force no-cache for API requests
const CACHE_VERSION = 'v1.0.1';

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

self.addEventListener('activate', (event) => {
  event.waitUntil(
    caches.keys().then(keys => {
      // Clear all caches on activation
      return Promise.all(keys.map(key => caches.delete(key)));
    }).then(() => self.clients.claim())
  );
});

self.addEventListener('fetch', (event) => {
  const url = new URL(event.request.url);
  
  // For API requests, always go to network with no-cache
  if (url.pathname.startsWith('/api/') || url.pathname.includes('/api/')) {
    event.respondWith(
      fetch(event.request, {
        cache: 'no-store',
        headers: {
          ...Object.fromEntries(event.request.headers),
          'Cache-Control': 'no-cache, no-store, must-revalidate',
          'Pragma': 'no-cache'
        }
      }).catch(err => {
        console.error('SW fetch error:', err);
        return new Response(JSON.stringify({ error: 'Network error' }), {
          status: 503,
          headers: { 'Content-Type': 'application/json' }
        });
      })
    );
    return;
  }
  
  // For other requests, use default network behavior (no caching)
});