const CACHE_NAME = 'qr-code-pwa-v1';
const assetsToCache = [
    '/',
    '/index.html',
    '/style.css',
    '/script.js',
    'https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css',
    'https://cdnjs.cloudflare.com/ajax/libs/qrcode-generator/1.4.4/qrcode.min.js'
];

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

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