<?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\Filter\FilterCollection;

use Assetic\Filter\FilterInterface;

/**

 * A base abstract asset.

 *

 * The methods load() and getLastModified() are left undefined, although a

 * reusable doLoad() method is available to child classes.

 *

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

 */

abstract class BaseAsset implements AssetInterface

{

    private $filters;

    private $sourceRoot;

    private $sourcePath;

    private $targetPath;

    private $content;

    private $loaded;

    /**

     * Constructor.

     *

     * @param array $filters Filters for the asset

     */

    public function __construct($filters = array(), $sourceRoot = null, $sourcePath = null)

    {

        $this->filters = new FilterCollection($filters);

        $this->sourceRoot = $sourceRoot;

        $this->sourcePath = $sourcePath;

        $this->loaded = false;

    }

    public function __clone()

    {

        $this->filters = clone $this->filters;

    }

    public function ensureFilter(FilterInterface $filter)

    {

        $this->filters->ensure($filter);

    }

    public function getFilters()

    {

        return $this->filters->all();

    }

    public function clearFilters()

    {

        $this->filters->clear();

    }

    /**

     * Encapsulates asset loading logic.

     *

     * @param string          $content          The asset content

     * @param FilterInterface $additionalFilter An additional filter

     */

    protected function doLoad($content, FilterInterface $additionalFilter = null)

    {

        $filter = clone $this->filters;

        if ($additionalFilter) {

            $filter->ensure($additionalFilter);

        }

        $asset = clone $this;

        $asset->setContent($content);

        $filter->filterLoad($asset);

        $this->content = $asset->getContent();

        $this->loaded = true;

    }

    public function dump(FilterInterface $additionalFilter = null)

    {

        if (!$this->loaded) {

            $this->load();

        }

        $filter = clone $this->filters;

        if ($additionalFilter) {

            $filter->ensure($additionalFilter);

        }

        $asset = clone $this;

        $filter->filterDump($asset);

        return $asset->getContent();

    }

    public function getContent()

    {

        return $this->content;

    }

    public function setContent($content)

    {

        $this->content = $content;

    }

    public function getSourceRoot()

    {

        return $this->sourceRoot;

    }

    public function getSourcePath()

    {

        return $this->sourcePath;

    }

    public function getTargetPath()

    {

        return $this->targetPath;

    }

    public function setTargetPath($targetPath)

    {

        $this->targetPath = $targetPath;

    }

}