<?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\Asset;

use Assetic\AssetManager;

use Assetic\Filter\FilterCollection;

use Assetic\Filter\FilterInterface;

/**

 * A reference to an asset in the asset manager.

 *

 * @author Kris Wallsmith <kris.wallsmith@gmail.com>

 */

class AssetReference implements AssetInterface

{

    private $am;

    private $name;

    private $filters = array();

    public function __construct(AssetManager $am, $name)

    {

        $this->am = $am;

        $this->name = $name;

    }

    public function ensureFilter(FilterInterface $filter)

    {

        $this->filters[] = $filter;

    }

    public function getFilters()

    {

        $this->flushFilters();

        return $this->callAsset(__FUNCTION__);

    }

    public function clearFilters()

    {

        $this->filters = array();

        $this->callAsset(__FUNCTION__);

    }

    public function load(FilterInterface $additionalFilter = null)

    {

        $this->flushFilters();

        return $this->callAsset(__FUNCTION__, array($additionalFilter));

    }

    public function dump(FilterInterface $additionalFilter = null)

    {

        $this->flushFilters();

        return $this->callAsset(__FUNCTION__, array($additionalFilter));

    }

    public function getContent()

    {

        return $this->callAsset(__FUNCTION__);

    }

    public function setContent($content)

    {

        $this->callAsset(__FUNCTION__, array($content));

    }

    public function getSourceRoot()

    {

        return $this->callAsset(__FUNCTION__);

    }

    public function getSourcePath()

    {

        return $this->callAsset(__FUNCTION__);

    }

    public function getTargetPath()

    {

        return $this->callAsset(__FUNCTION__);

    }

    public function setTargetPath($targetPath)

    {

        $this->callAsset(__FUNCTION__, array($targetPath));

    }

    public function getLastModified()

    {

        return $this->callAsset(__FUNCTION__);

    }

    // private

    private function callAsset($method, $arguments = array())

    {

        $asset = $this->am->get($this->name);

        return call_user_func_array(array($asset, $method), $arguments);

    }

    private function flushFilters()

    {

        $asset = $this->am->get($this->name);

        while ($filter = array_shift($this->filters)) {

            $asset->ensureFilter($filter);

        }

    }

}