<?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\DependencyInjection;

use Symfony\Component\Config\FileLocator;

use Symfony\Component\DependencyInjection\ContainerBuilder;

use Symfony\Component\DependencyInjection\Reference;

use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;

use Symfony\Component\HttpKernel\DependencyInjection\Extension;

/**

 * TwigExtension.

 *

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

 * @author Jeremy Mikola <jmikola@gmail.com>

 */

class TwigExtension extends Extension

{

    /**

     * Responds to the twig configuration parameter.

     *

     * @param array            $configs

     * @param ContainerBuilder $container

     */

    public function load(array $configs, ContainerBuilder $container)

    {

        $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));

        $loader->load('twig.xml');

        $configuration = new Configuration();

        $config = $this->processConfiguration($configuration, $configs);

        $container->setParameter('twig.exception_listener.controller', $config['exception_controller']);

        $container->setParameter('twig.form.resources', $config['form']['resources']);

        $container->getDefinition('twig.loader')->addMethodCall('addPath', array(__DIR__.'/../../../Bridge/Twig/Resources/views/Form'));

        if (!empty($config['globals'])) {

            $def = $container->getDefinition('twig');

            foreach ($config['globals'] as $key => $global) {

                if (isset($global['type']) && 'service' === $global['type']) {

                    $def->addMethodCall('addGlobal', array($key, new Reference($global['id'])));

                } else {

                    $def->addMethodCall('addGlobal', array($key, $global['value']));

                }

            }

        }

        unset(

            $config['form'],

            $config['globals'],

            $config['extensions']

        );

        $container->setParameter('twig.options', $config);

        $this->addClassesToCompile(array(

            'Twig_Environment',

            'Twig_ExtensionInterface',

            'Twig_Extension',

            'Twig_Extension_Core',

            'Twig_Extension_Escaper',

            'Twig_Extension_Optimizer',

            'Twig_LoaderInterface',

            'Twig_Markup',

            'Twig_TemplateInterface',

            'Twig_Template',

        ));

    }

    /**

     * Returns the base path for the XSD files.

     *

     * @return string The XSD base path

     */

    public function getXsdValidationBasePath()

    {

        return __DIR__.'/../Resources/config/schema';

    }

    public function getNamespace()

    {

        return 'http://symfony.com/schema/dic/twig';

    }

}