sw.js

const CACHE = 'radio-v3.6.4';
const ASSETS = [ 
  '/',
  './manifest.json',
  './icons/icon-192x192.png',
  './icons/icon-512x512.png'
];

self.addEventListener('install', e => {
  e.waitUntil(
    caches.open(CACHE).then(c => c.addAll(ASSETS))
  );
  self.skipWaiting(); 
});

self.addEventListener('activate', e => {
  e.waitUntil(
    caches.keys().then(keys =>
      Promise.all(keys.filter(k => k !== CACHE).map(k => caches.delete(k)))
    )
  );
  self.clients.claim();
});

self.addEventListener('fetch', e => {
  // Radio stream গুলো cache করব না, শুধু app shell cache করব
  if (e.request.url.includes('stream') || e.request.url.includes('zeno') || e.request.url.includes('shoutca')) {
    return;
  }
  e.respondWith(
    caches.match(e.request).then(cached => cached || fetch(e.request))
  );
});