<?php

/**
 * 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; under version 2
 * of the License (non-upgradable).
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright (c) 2021 (original work) Open Assessment Technologies SA;
 */

namespace App\Security\Api\Provider;

use App\Security\Api\Token\ApiKeyToken;
use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
use Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Exception\AuthenticationException;

class ApiKeyProvider implements AuthenticationProviderInterface
{
    /** @var ParameterBagInterface */
    private $parameterBag;

    public function __construct(ParameterBagInterface $parameterBag)
    {
        $this->parameterBag = $parameterBag;
    }

    public function supports(TokenInterface $token): bool
    {
        return $token instanceof ApiKeyToken;
    }

    public function authenticate(TokenInterface $token): TokenInterface
    {
        $securedApiKey = $this->parameterBag->get('application_api_key');

        if ($token->getAttribute('api_key') === $securedApiKey)
        {
            $token->setAuthenticated(true);

            return $token;
        }

        throw new AuthenticationException('Unauthorised api key');
    }
}