<?php
/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM - Open Source CRM application.
 * Copyright (C) 2014-2022 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
 * Website: https://www.espocrm.com
 *
 * EspoCRM 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.
 *
 * EspoCRM 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 EspoCRM. If not, see http://www.gnu.org/licenses/.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
 ************************************************************************/

namespace Espo\Core\Authentication\Oidc;

use Espo\Core\Authentication\AuthToken\AuthToken;
use Espo\Core\Authentication\Logout as LogoutInterface;
use Espo\Core\Authentication\Logout\Params;
use Espo\Core\Authentication\Logout\Result;
use Espo\Core\Utils\Config;

class Logout implements LogoutInterface
{
    private Config $config;

    public function __construct(Config $config)
    {
        $this->config = $config;
    }

    public function logout(AuthToken $authToken, Params $params): Result
    {
        if ($authToken->getPortalId()) {
            return Result::create();
        }

        /** @var ?string $url */
        $url = $this->config->get('oidcLogoutUrl');
        /** @var string $oidcClientId */
        $oidcClientId = $this->config->get('oidcClientId') ?? '';
        $siteUrl = rtrim($this->config->get('siteUrl') ?? '', '/');

        if ($url) {
            $url = str_replace('{clientId}', urlencode($oidcClientId), $url);
            $url = str_replace('{siteUrl}', urlencode($siteUrl), $url);
        }

        // @todo Check session is set if auth token to bypass fallback logins.

        return Result::create()->withRedirectUrl($url);
    }
}