<?php

/*

 * This file is part of the Symfony package.

 *

 * (c) Fabien Potencier <fabien@symfony.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Symfony\Bundle\FrameworkBundle\Templating;

use Symfony\Component\DependencyInjection\ContainerInterface;

/**

 * GlobalVariables is the entry point for Symfony global variables in Twig templates.

 *

 * @author Fabien Potencier <fabien@symfony.com>

 */

class GlobalVariables

{

    protected $container;

    public function __construct(ContainerInterface $container)

    {

        $this->container = $container;

    }

    /**

     * Returns the security context service.

     *

     * @return Symfony\Component\Security\Core\SecurityContext|void The security context

     */

    public function getSecurity()

    {

        if ($this->container->has('security.context')) {

            return $this->container->get('security.context');

        }

    }

    /**

     * Returns the current user.

     *

     * @return mixed|void

     *

     * @see Symfony\Component\Security\Core\Authentication\Token\TokenInterface::getUser()

     */

    public function getUser()

    {

        if (!$security = $this->getSecurity()) {

            return;

        }

        if (!$token = $security->getToken()) {

            return;

        }

        $user = $token->getUser();

        if (!is_object($user)) {

            return;

        }

        return $user;

    }

    /**

     * Returns the current request.

     *

     * @return Symfony\Component\HttpFoundation\Request|void The http request object

     */

    public function getRequest()

    {

        if ($this->container->has('request') && $request = $this->container->get('request')) {

            return $request;

        }

    }

    /**

     * Returns the current session.

     *

     * @return Symfony\Component\HttpFoundation\Session|void The session

     */

    public function getSession()

    {

        if ($request = $this->getRequest()) {

            return $request->getSession();

        }

    }

    /**

     * Returns the current app environment.

     *

     * @return string The current environment string (e.g 'dev')

     */

    public function getEnvironment()

    {

        return $this->container->getParameter('kernel.environment');

    }

    /**

     * Returns the current app debug mode.

     *

     * @return Boolean The current debug mode

     */

    public function getDebug()

    {

        return (Boolean) $this->container->getParameter('kernel.debug');

    }

}