sw.js

/*
 *  Pixelated
 *  Copyright (c) Michael Kolesidis <michael.kolesidis@gmail.com>
 *  GNU Affero General Public License v3.0
 * 
 *  ATTENTION! FREE SOFTWARE
 *  This website is free software (free as in freedom).
 *  If you use any part of this code, you must make your entire project's source code
 *  publicly available under the same license. This applies whether you modify the code
 *  or use it as it is in your own project. This ensures that all modifications and
 *  derivative works remain free software, so that everyone can benefit.
 *  If you are not willing to comply with these terms, you must refrain from using any part of this code.
 *
 *  For full license terms and conditions, you can read the AGPL-3.0 here:
 *  https://www.gnu.org/licenses/agpl-3.0.html
 * 
 */

const CACHE_NAME = 'pixelated-cache';
const urlsToCache = [
  '/',
  '/index.html',
  '/style.css',
  '/pixelated.min.js',
  '/texts.js',
  '/assets/favicon.ico',
  '/assets/apple-touch-icon.png',
  '/assets/logo.svg',
  '/assets/fonts/inter.woff2',
  '/manifest.webmanifest',
];

self.addEventListener('install', (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME).then((cache) => {
      console.log('Opened cache');
      return cache.addAll(urlsToCache);
    })
  );
});

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

self.addEventListener('activate', (event) => {
  const cacheWhitelist = [CACHE_NAME];
  event.waitUntil(
    caches.keys().then((cacheNames) =>
      Promise.all(
        cacheNames.map((cacheName) => {
          if (!cacheWhitelist.includes(cacheName)) {
            return caches.delete(cacheName);
          }
        })
      )
    )
  );
});