<?php

/*

 * This file is part of the Assetic package, an OpenSky project.

 *

 * (c) 2010-2011 OpenSky Project Inc

 *

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

 * file that was distributed with this source code.

 */

namespace Assetic\Extension\Twig;

use Assetic\Factory\AssetFactory;

class AsseticExtension extends \Twig_Extension

{

    protected $factory;

    protected $functions;

    public function __construct(AssetFactory $factory, $functions = array())

    {

        $this->factory = $factory;

        $this->functions = array();

        foreach ($functions as $function => $options) {

            if (is_integer($function) && is_string($options)) {

                $this->functions[$options] = array('filter' => $options);

            } else {

                $this->functions[$function] = $options + array('filter' => $function);

            }

        }

    }

    public function getTokenParsers()

    {

        return array(

            new AsseticTokenParser($this->factory, 'javascripts', 'js/*.js'),

            new AsseticTokenParser($this->factory, 'stylesheets', 'css/*.css'),

            new AsseticTokenParser($this->factory, 'image', 'images/*', true),

        );

    }

    public function getFunctions()

    {

        $functions = array();

        foreach ($this->functions as $function => $filter) {

            $functions[$function] = new AsseticFilterFunction($function);

        }

        return $functions;

    }

    public function getGlobals()

    {

        return array(

            'assetic' => array('debug' => $this->factory->isDebug()),

        );

    }

    public function getFilterInvoker($function)

    {

        return new AsseticFilterInvoker($this->factory, $this->functions[$function]);

    }

    public function getName()

    {

        return 'assetic';

    }

}