/*
Copyright (C) 2025 filifa

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

const VERSION = "v1";

const CACHE_NAME = `mcalc-${VERSION}`;

const APP_STATIC_RESOURCES = [
	"../index.html",
	"../legal.html",
	"../styles.css",
	"../main.js",
	"evaluate.js",
	"lexer.js",
	"math.js",
	"parser.js",
	"../icon.svg"
];

// On install, cache the static resources
self.addEventListener("install", (event) => {
	event.waitUntil(
		(async () => {
			const cache = await caches.open(CACHE_NAME);
			cache.addAll(APP_STATIC_RESOURCES);
		})(),
	);
});

// delete old caches on activate
self.addEventListener("activate", (event) => {
	event.waitUntil(
		(async () => {
			const names = await caches.keys();
			await Promise.all(
				names.map((name) => {
					if (name !== CACHE_NAME) {
						return caches.delete(name);
					}
					return undefined;
				}),
			);
			await clients.claim();
		})(),
	);
});