<?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\AsseticBundle\DependencyInjection;

use Symfony\Component\DependencyInjection\Definition;

use Symfony\Component\DependencyInjection\Reference;

/**

 * Encapsulates logic for creating a directory resource.

 *

 * @author Kris Wallsmith <kris@symfony.com>

 */

class DirectoryResourceDefinition extends Definition

{

    /**

     * Constructor.

     *

     * @param string $bundle A bundle name or empty string

     * @param string $engine The templating engine

     * @param array  $dirs   An array of directories to merge

     */

    public function __construct($bundle, $engine, array $dirs)

    {

        if (!count($dirs)) {

            throw new \InvalidArgumentException('You must provide at least one directory.');

        }

        parent::__construct();

        $this

            ->addTag('assetic.templating.'.$engine)

            ->addTag('assetic.formula_resource', array('loader' => $engine));

        ;

        if (1 == count($dirs)) {

            // no need to coalesce

            self::configureDefinition($this, $bundle, $engine, reset($dirs));

            return;

        }

        // gather the wrapped resource definitions

        $resources = array();

        foreach ($dirs as $dir) {

            $resources[] = $resource = new Definition();

            self::configureDefinition($resource, $bundle, $engine, $dir);

        }

        $this

            ->setClass('%assetic.coalescing_directory_resource.class%')

            ->addArgument($resources)

            ->setPublic(false)

        ;

    }

    static private function configureDefinition(Definition $definition, $bundle, $engine, $dir)

    {

        $definition

            ->setClass('%assetic.directory_resource.class%')

            ->addArgument(new Reference('templating.loader'))

            ->addArgument($bundle)

            ->addArgument($dir)

            ->addArgument('/^[^.]+\.[^.]+\.'.$engine.'$/')

            ->setPublic(false)

        ;

    }

}