const CACHE_NAME = 'qr-code-pwa-v1';
const assetsToCache = [
    './',
    './index.html',
    './style.css',
    './script.js',
    './tailwind.min.css',
    './qrcode.min.js'
];


self.addEventListener('install', event => {
    event.waitUntil(
        caches.open(cacheName).then(cache => {
            cache.addAll(assets);
        })
    );
});

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

self.addEventListener('activate', event => {
    event.waitUntil(
        caches.keys().then(keys => {
            return Promise.all(
                keys.filter(key => key !== cacheName)
                    .map(key => caches.delete(key))
            );
        })
    );
});