service-worker.js

const APP_CACHE = 'nsk-warrior-cache-v04';
const urlsToCache = [
    '/',
    '/index.html',
    '/app.js?v=1.1.0',
    '/booklet/booklet.css',
    'https://nsk-warrior-files.netlify.app/RPG Maker (USA).zip',
    'https://nsk-warrior-files.netlify.app/RPG Maker (USA).state',
    'https://nsk-warrior-files.netlify.app/scph5501.bin',
    '/booklet/manual_icon.webp',
    '/images/title.avif',
    '/booklet/sounds/page_turn.mp3',
    '/booklet/sounds/slide_in.mp3',
    '/booklet/sounds/slide_out.mp3',
    '/booklet/pages/1.webp',
    '/booklet/pages/2.webp',
    '/booklet/pages/3.webp',
    '/booklet/pages/4.webp',
    '/booklet/pages/5.webp',
    '/booklet/pages/6.webp',
    '/booklet/pages/7.webp',
    '/booklet/pages/8.webp',
    '/booklet/pages/9.webp',
    '/booklet/pages/10.webp',
    '/booklet/pages/11.webp',
    '/booklet/pages/12.webp',
    '/booklet/pages/13.webp',
    '/booklet/pages/14.webp',
    '/booklet/pages/15.webp',
    '/booklet/pages/16.webp',
    '/booklet/pages/17.webp',
    '/booklet/pages/18.webp',
    '/booklet/pages/19.webp',
    '/booklet/pages/20.webp',
    '/booklet/booklet.js',
    '/booklet/panzoom.min.js',
    '/booklet/turn.min.js',
    'https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js',
    'https://cdn.emulatorjs.org/4.0.9/data/emulator.min.js',
    'https://cdn.emulatorjs.org/4.0.9/data/loader.js',
    'https://cdn.emulatorjs.org/4.0.9/data/emulator.min.css',
    'https://cdn.emulatorjs.org/4.0.9/data/cores/mednafen_psx_hw-wasm.data',
];

self.addEventListener('install', event => {
    self.skipWaiting();
    event.waitUntil(
        caches.open(APP_CACHE).then(cache => {
            return Promise.all(
                urlsToCache.map(url => {
                    return fetch(url).then(response => {
                        if (!response.ok) {
                            throw new TypeError('Bad response status');
                        }
                        return cache.put(url, response);
                    }).catch(error => {
                        console.error('Failed to cache:', url, error);
                    });
                })
            );
        })
    );
});

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

self.addEventListener('fetch', event => {
    event.respondWith(
        caches.match(event.request).then(response => {
            if (response) {
                return response;
            }
            return fetch(event.request).then(networkResponse => {
                if (!networkResponse || networkResponse.status !== 200 || networkResponse.type !== 'basic' || event.request.method !== 'GET') {
                    return networkResponse;
                }
                const responseToCache = networkResponse.clone();
                caches.open(APP_CACHE).then(cache => {
                    cache.put(event.request, responseToCache);
                });
                return networkResponse;
            }).catch(() => {
                return caches.match(event.request);
            });
        })
    );
});