<?php
/**
 * @copyright Copyright (C) 2010-2024, the Friendica project
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */

namespace Friendica\Test\src\Protocol;

use Friendica\Protocol\Salmon;

class SalmonTest extends \PHPUnit\Framework\TestCase
{
	public function dataMagic(): array
	{
		return [
			'salmon' => [
				'magic' => file_get_contents(__DIR__ . '/../../datasets/crypto/rsa/salmon-public-magic'),
				'pem'   => file_get_contents(__DIR__ . '/../../datasets/crypto/rsa/salmon-public-pem'),
			],
		];
	}

	/**
	 * @dataProvider dataMagic
	 *
	 * @param $magic
	 * @param $pem
	 * @return void
	 * @throws \Exception
	 */
	public function testSalmonKey($magic, $pem)
	{
		$this->assertEquals($magic, Salmon::salmonKey($pem));
	}

	/**
	 * @dataProvider dataMagic
	 *
	 * @param $magic
	 * @param $pem
	 * @return void
	 */
	public function testMagicKeyToPem($magic, $pem)
	{
		$this->assertEquals($pem, Salmon::magicKeyToPem($magic));
	}

	public function dataMagicFailure(): array
	{
		return [
			'empty string' => [
				'magic' => '',
			],
			'Missing algo' => [
				'magic' => 'tvsoBZbLUvqWs-0d8C5hVQLjLCjjxyZb17Rm8_9FDqBYUigBSFDcJCzG27FM-zuddwpgJB0vDuPKQnt59kKRsw.AQAB',
			],
			'Missing modulus' => [
				'magic' => 'RSA.AQAB',
			],
			'Missing exponent' => [
				'magic' => 'RSA.tvsoBZbLUvqWs-0d8C5hVQLjLCjjxyZb17Rm8_9FDqBYUigBSFDcJCzG27FM-zuddwpgJB0vDuPKQnt59kKRsw',
			],
			'Missing key parts' => [
				'magic' => 'RSA.',
			],
			'Too many parts' => [
				'magic' => 'RSA.tvsoBZbLUvqWs-0d8C5hVQLjLCjjxyZb17Rm8_9FDqBYUigBSFDcJCzG27FM-zuddwpgJB0vDuPKQnt59kKRsw.AQAB.AQAB',
			],
			'Wrong encoding' => [
				'magic' => 'RSA.tvsoBZbLUvqWs-0d8C5hVQLjLCjjxyZb17Rm8/9FDqBYUigBSFDcJCzG27FM+zuddwpgJB0vDuPKQnt59kKRsw.AQAB',
			],
			'Wrong algo' => [
				'magic' => 'ECDSA.tvsoBZbLUvqWs-0d8C5hVQLjLCjjxyZb17Rm8_9FDqBYUigBSFDcJCzG27FM-zuddwpgJB0vDuPKQnt59kKRsw.AQAB',
			],
		];
	}

	/**
	 * @dataProvider dataMagicFailure
	 *
	 * @param $magic
	 * @return void
	 */
	public function testMagicKeyToPemFailure($magic)
	{
		$this->expectException(\Throwable::class);

		Salmon::magicKeyToPem($magic);
	}
}