<?php

/*

 * This file is part of the Symfony framework.

 *

 * (c) Fabien Potencier <fabien@symfony.com>

 *

 * This source file is subject to the MIT license that is bundled

 * with this source code in the file LICENSE.

 */

namespace Symfony\Bundle\AsseticBundle\Factory\Resource;

use Assetic\Factory\Resource\ResourceInterface;

use Symfony\Bundle\FrameworkBundle\Templating\TemplateReference;

use Symfony\Component\Templating\Loader\LoaderInterface;

/**

 * A file resource.

 *

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

 */

class FileResource implements ResourceInterface

{

    protected $loader;

    protected $bundle;

    protected $baseDir;

    protected $path;

    protected $template;

    /**

     * Constructor.

     *

     * @param LoaderInterface $loader  The templating loader

     * @param string          $bundle  The current bundle name

     * @param string          $baseDir The directory

     * @param string          $path    The file path

     */

    public function __construct(LoaderInterface $loader, $bundle, $baseDir, $path)

    {

        $this->loader = $loader;

        $this->bundle = $bundle;

        $this->baseDir = $baseDir;

        $this->path = $path;

    }

    public function isFresh($timestamp)

    {

        return $this->loader->isFresh($this->getTemplate(), $timestamp);

    }

    public function getContent()

    {

        return $this->loader->load($this->getTemplate())->getContent();

    }

    public function __toString()

    {

        return (string) $this->getTemplate();

    }

    protected function getTemplate()

    {

        if (null === $this->template) {

            $this->template = self::createTemplateReference($this->bundle, substr($this->path, strlen($this->baseDir)));

        }

        return $this->template;

    }

    static private function createTemplateReference($bundle, $file)

    {

        $parts = explode('/', strtr($file, '\\', '/'));

        $elements = explode('.', array_pop($parts));

        return new TemplateReference($bundle, implode('/', $parts), $elements[0], $elements[1], $elements[2]);

    }

}