<?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\TwigBundle\Extension;

use Symfony\Component\DependencyInjection\ContainerInterface;

/**

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

 */

class AssetsExtension extends \Twig_Extension

{

    private $container;

    public function __construct(ContainerInterface $container)

    {

        $this->container = $container;

    }

    /**

     * Returns a list of functions to add to the existing list.

     *

     * @return array An array of functions

     */

    public function getFunctions()

    {

        return array(

            'asset' => new \Twig_Function_Method($this, 'getAssetUrl'),

            'assets_version' => new \Twig_Function_Method($this, 'getAssetsVersion'),

        );

    }

    /**

     * Returns the public path of an asset

     *

     * Absolute paths (i.e. http://...) are returned unmodified.

     *

     * @param string $path        A public path

     * @param string $packageName The name of the asset package to use

     *

     * @return string A public path which takes into account the base path and URL path

     */

    public function getAssetUrl($path, $packageName = null)

    {

        return $this->container->get('templating.helper.assets')->getUrl($path, $packageName);

    }

    /**

     * Returns the version of the assets in a package

     *

     * @param string $packageName

     * @return int

     */

    public function getAssetsVersion($packageName = null)

    {

        return $this->container->get('templating.helper.assets')->getVersion($packageName);

    }

    /**

     * Returns the name of the extension.

     *

     * @return string The extension name

     */

    public function getName()

    {

        return 'assets';

    }

}