<?php

	/**
	 * @package debug
	 */

	namespace Crane\Extensions\Debug;
	use XSLTProcessor;
	use Crane\Libs\Delegate;
	use Crane\Libs\Dom;
	use Crane\Libs\Instance;

	// Announce this extension:
	Delegate\trigger('extension.announce', array(
		'name'		=> 'Debug Controller',
		'delegate'	=> 'extension.debug',
		'file'		=> __FILE__
	));

	/**
	 * Initialize the Debug extension when Crane is ready.
	 *
	 * @param string $context
	 *	'extension.debug.initialize'
	 */
	Delegate\register('extension.debug.initialize');

	/**
	 * Register the Debug controller class.
	 *
	 * @param string $context
	 *	'extension.debug.register-controller'
	 */
	Delegate\register('extension.debug.register-controller');

	/**
	 * Get the extension directory.
	 */
	function getDir() {
		return __DIR__;
	}

	/**
	 * Get the extension URL.
	 */
	function getUrl() {
		$href = \Crane\getServerUrl();
		$path = substr(getDir(), strlen(\Crane\getServerDir()));
		$path = ltrim($path, '/');

		return sprintf(
			'%s/%s',
			$href, $path
		);
	}

	/**
	 * Transform a document with the debug template.
	 *
	 * @param Dom\Document $document
	 */
	function transform(Dom\Document $document) {
		$stylesheet = new DOM\Document();
		$stylesheet->load(__DIR__ . '/assets/template.xsl');

		$xslt = new XSLTProcessor();
		$xslt->importStylesheet($stylesheet);

		return $xslt->transformToXML($document);
	}

	// Wait to be turned on:
	Delegate\listen('extension.debug.initialize', function() {
		Delegate\listen('extension.debug.register-controller', function() {
			$crane = Instance::current();

			if (isset($crane->parameters()->{'debug'})) {
				$crane->registerController(new Libs\Controller());
			}
		});
	});

?>