<?php

namespace Gist\Security;

use Symfony\Component\Security\Http\Firewall\ListenerInterface;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
use Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface;
use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;

/**
 * Class AuthenticationListener.
 *
 * @author Simon Vieille <simon@deblan.fr>
 */
class AuthenticationListener implements ListenerInterface
{
    /**
     * @var TokenStorageInterface
     */
    protected $tokenStorage;

    /**
     * @var AuthenticationManagerInterface
     */
    protected $authenticationManager;

    /**
     * __construct.
     *
     * @param TokenStorageInterface          $tokenStorage
     * @param AuthenticationManagerInterface $authenticationManager
     */
    public function __construct(TokenStorageInterface $tokenStorage, AuthenticationManagerInterface $authenticationManager)
    {
        $this->tokenStorage = $tokenStorage;
        $this->authenticationManager = $authenticationManager;
    }

    /**
     * @param GetResponseEvent $event
     */
    public function handle(GetResponseEvent $event)
    {
        $request = $event->getRequest();
        $username = $request->get('_username');
        $password = $request->get('_password');

        if (!empty($username)) {
            $token = new UsernamePasswordToken($username, $password, 'default');

            try {
                $authToken = $this->authenticationManager->authenticate($token);
                $this->tokenStorage->setToken($token);

                return;
            } catch (AuthenticationException $failed) {
                $this->tokenStorage->setToken(null);

                return;
            }
        }
    }
}