<?php

namespace Assetic\Factory\Loader;

use Assetic\Cache\ConfigCache;
use Assetic\Factory\Resource\IteratorResourceInterface;
use Assetic\Factory\Resource\ResourceInterface;

/**
 * Adds a caching layer to a loader.
 *
 * A cached formula loader is a composition of a formula loader and a cache.
 *
 * @author Kris Wallsmith <kris.wallsmith@gmail.com>
 */
class CachedFormulaLoader implements FormulaLoaderInterface
{
	private $loader;
	private $configCache;
	private $debug;


	/**
	 * Constructor.
	 *
	 * When the loader is in debug mode it will ensure the cached formulae
	 * are fresh before returning them.
	 *
	 * @param FormulaLoaderInterface $loader      A formula loader
	 * @param ConfigCache            $configCache A config cache
	 * @param Boolean                $debug       The debug mode
	 */
	public function __construct(FormulaLoaderInterface $loader, ConfigCache $configCache, $debug = false)
	{
		$this->loader = $loader;
		$this->configCache = $configCache;
		$this->debug = $debug;
	}


	public function load(ResourceInterface $resources)
	{
		if (!$resources instanceof IteratorResourceInterface) {
		    $resources = array($resources);
		}

		$formulae = array();

		foreach ($resources as $resource) {
		    $id = (string) $resource;
		    if (!$this->configCache->has($id) || ($this->debug && !$resource->isFresh($this->configCache->getTimestamp($id)))) {
		        $formulae += $this->loader->load($resource);
		        $this->configCache->set($id, $formulae);
		    } else {
		        $formulae += $this->configCache->get($id);
		    }
		}

		return $formulae;
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTI4NDAxNTM2MTE1MDc5MiA5ODgwOTMzMzM4NDg0NDEyIDMyOTg5ODIzODQ3MTg2MDM=