// *************************************************************************
// * (C)opyright 2026         by Ruben Carlo Benante                       *
// *                                                                       *
// * 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 http://www.gnu.org/licenses/.  *
// *                                                                       *
// * Contact author at:                                                    *
// *  Ruben Carlo Benante                                                  *
// *  rcb@beco.cc                                                          *
// *************************************************************************

import esbuild from 'esbuild';
import process from 'process';
import { cp, mkdir, readdir } from 'node:fs/promises';

const banner = `/*
 * logsdu - fills and submits a three-field academic portal login.
 * Copyright (C) 2026 Ruben Carlo Benante (Dr. Beco) <rcb@beco.cc>
 * Licensed under the GNU General Public License v3.0 or later.
 * See https://www.gnu.org/licenses/ and the LICENSE file.
 *
 * THIS IS A GENERATED/BUNDLED FILE BY ESBUILD.
 * To view the source, visit the repository of this extension.
 */
`;

const prod = process.argv[2] === 'production';
const outdir = 'build';

// Everything that is not TypeScript is copied verbatim into build/, so that
// the directory can be handed straight to about:debugging.
async function copyStatic() {
	await mkdir(outdir, { recursive: true });
	for (const name of await readdir('src')) {
		if (name.endsWith('.json') || name.endsWith('.html') || name.endsWith('.css')) {
			await cp(`src/${name}`, `${outdir}/${name}`);
		}
	}
	await cp('icons', `${outdir}/icons`, { recursive: true });
}

await copyStatic();

// In watch mode the static files must follow every rebuild, otherwise editing
// manifest.json or a .html file silently changes nothing in build/.
const staticPlugin = {
	name: 'copy-static',
	setup(build) {
		build.onEnd(() => copyStatic());
	},
};

const context = await esbuild.context({
	banner: {
		js: banner,
	},
	plugins: [staticPlugin],
	// Four independent entry points: no shared runtime, no imports at load
	// time. Content scripts and page-world scripts cannot be ES modules, so
	// every bundle has to stand alone.
	entryPoints: [
		'src/content.ts',
		'src/injected.ts',
		'src/options.ts',
		'src/popup.ts',
	],
	bundle: true,
	format: 'iife',
	target: 'es2021',
	logLevel: 'info',
	sourcemap: prod ? false : 'inline',
	treeShaking: true,
	outdir,
	minify: prod,
});

if (prod) {
	await context.rebuild();
	process.exit(0);
} else {
	await context.watch();
}