<?php
/**
 * Authserver, an OAuth2-based single-signon authentication provider written in PHP.
 *
 * Copyright (C) $today.date  Lars Vierbergen
 *
 * his 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 <http://www.gnu.org/licenses/>.
 */

namespace vierbergenlars\AuthserverOAuthAccountBundle\EventListener;


use HWI\Bundle\OAuthBundle\Security\OAuthUtils;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Request;
use vierbergenlars\AuthserverExternalAccountBundle\Event\LoginButtonEvent;
use vierbergenlars\AuthserverExternalAccountBundle\ExternalAccountEvents;
use vierbergenlars\AuthserverOAuthAccountBundle\ResourceOwner\ResourceOwnerMap;

class LoginButtonListener implements EventSubscriberInterface
{
    /**
     * @var OAuthUtils
     */
    private $oauthUtils;

    /**
     * @var ResourceOwnerMap
     */
    private $resourceOwnerConfig;

    public function __construct(OAuthUtils $oauthUtils, ResourceOwnerMap $resourceOwnerConfig)
    {

        $this->oauthUtils = $oauthUtils;
        $this->resourceOwnerConfig = $resourceOwnerConfig;
    }

    public static function getSubscribedEvents()
    {
        return [
            ExternalAccountEvents::LOGIN_BUTTON => 'onLoginButton'
        ];
    }

    public function onLoginButton(LoginButtonEvent $event)
    {
        foreach($this->oauthUtils->getResourceOwners() as $owner)
        {
            $event->addButton($this->resourceOwnerConfig[$owner]->getLoginButton() + [
                'url' => $this->oauthUtils->getLoginUrl(new Request(), $owner),
            ]);
        }
    }
}