const CACHE_NAME = 'org-todo-pwa-cache-v1';
const urlsToCache = [
    '/',
    '/index.html',
    '/style.css',
    '/app.js',
    '/manifest.json'
];

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

self.addEventListener('activate', event => {
    event.waitUntil(
        caches.keys().then(cacheNames => {
            return Promise.all(
                cacheNames.map(cacheName => {
                    if (cacheName !== CACHE_NAME) {
                        return caches.delete(cacheName);
                    }
                })
            );
        })
    );
    self.clients.claim(); // Take control of all clients immediately
});

self.addEventListener('fetch', event => {
    event.respondWith(
        caches.match(event.request)
            .then(response => {
                if (response) {
                    return response;
                }
                return fetch(event.request);
            })
    );
});

self.addEventListener('message', event => {
    if (event.data === 'skipWaiting') {
        self.skipWaiting();
    }
});