<?php

declare(strict_types = 1);

// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social.  If not, see <http://www.gnu.org/licenses/>.
// }}}

/**
 * OAuth2 implementation for GNU social
 *
 * @package   OAuth2
 * @category  API
 *
 * @author    Diogo Peralta Cordeiro <mail@diogo.site>
 * @author    Hugo Sales <hugo@hsal.es>
 * @copyright 2022 Free Software Foundation, Inc http://www.fsf.org
 * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
 */

namespace Plugin\OAuth2\Repository;

use App\Core\DB;
use App\Util\Exception\NotFoundException;
use League\OAuth2\Server\Entities\ClientEntityInterface;
use League\OAuth2\Server\Repositories\ClientRepositoryInterface;
use Plugin\OAuth2\Entity;

class Client implements ClientRepositoryInterface
{
    /**
     * @param string      $clientIdentifier
     * @param null|string $clientSecret
     * @param null|string $grantType
     */
    public function validateClient($clientIdentifier, $clientSecret, $grantType): bool
    {
        try {
            /** @var Entity\Client $client */
            $client = $this->getClientEntity($clientIdentifier);
            if ($client->getIsConfidential() && $clientSecret !== $client->getSecret()) {
                return false;
            }
        } catch (NotFoundException) {
            return false;
        }
        return true;
    }

    /**
     * @throws \App\Util\Exception\DuplicateFoundException
     * @throws NotFoundException
     */
    public function getClientEntity($clientIdentifier): ?ClientEntityInterface
    {
        return DB::findOneBy(Entity\Client::class, ['id' => $clientIdentifier]);
    }
}
