<?php
/* $Id$ */
(defined('MCMS') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

use \Mammut\Template\CTemplate;
use \MCMS\Response;
use \MCMS\System;
use \MCMS\Plugin\iPlugInLayout;
use \Misc\CSSMin;

/**
 * Layout plugin for administration backend
 *
 * @author Stefan Daurer
 */
class PlugInMMPIAdminLayout implements iPlugInLayout {
	protected $layout;
	protected $fragments;
	public $addHeaders = array();

	public function __construct() {
	}

	public function getRegions() {
		return array('TITLE','CONTENT','MENU1','MENU2','DEBUGINFO');
	}

	public function setRegionContent($region, $content) {
		$this->fragments[$region] = $content;
	}

	public function registerRegion($name) {
	}

	public function getRegionContent($region) {
		if(isset($this->fragments[$region]))
			return (string) $this->fragments[$region];
		return NULL;
	}

	/**
	 * helper method, which separates the layout variables from the local variables of a
	 * method
	 */
	private function getFileOutput($filename) {
		if(!file_exists($filename))
			return NULL;
		ob_start();
		include ($filename);
		return ob_get_clean();
	}

	public function getDocument($media, Response $response = NULL) {
		$system = System::getInstance();
		$db = $system->getDB();
		
		//$this->layout = $system->getSiteParam($system->getSiteId(), '', 'layout', 'default');
		$this->layout = 'default';
		
		if(defined('_SERVICE_'))
			return $this->fragments['CONTENT'];
		
		$filebase = __DS__ . $this->layout . __DS__;
		
		if(is_dir($filebase . 'admin' . __DS__))
			$filebase = $filebase . 'admin' . __DS__;
		else
			$filebase = __DS__ . 'default' . __DS__ . 'admin' . __DS__;
		
		switch($media) {
			case 'print':
				$file = 'print.php';
			break;
			case 'popup':
				$file = 'popup.php';
			break;
			default:
				$file = 'default.php';
			break;
		}
		$num = 0;
		$layout = NULL;
		foreach(array(
				_LAYOUTPATHX_ . $filebase . $file,_LAYOUTPATHX_ . $filebase . 'default.php',
				_LAYOUTPATH_ . $filebase . $file,_LAYOUTPATHX_ . $filebase . 'default.php') as $layoutPath) {
			if(file_exists($layoutPath)) {
				$layout = $this->getFileOutput($layoutPath);
				break;
			}
			$num++;
		}
		if(is_null($layout))
			throw new \RuntimeException($this->layout . ' is an invalid layout (base: ' . $filebase . ')');
			
			// modifiy relative links to match new location
		$layout = preg_replace('#<!--/.*?-->#', '', $layout); // remove hidden comments
		$layoutPath = array(
				_LAYOUTPATHX_,_LAYOUTPATHX_,_LAYOUTPATH_,_LAYOUTPATH_);
		$layoutPath = $layoutPath[$num] . $filebase;
		$layoutPath = preg_replace('#^' . addslashes(_BASEPATH_) . '#', '', $layoutPath, 1);
		$layoutPath = dirname($_SERVER['PHP_SELF']) . $layoutPath;
		$layoutPath = str_replace('\\', '/', $layoutPath);
		$layout = preg_replace('#((href|src)=["\'])\\.[/\\\\]#is', '\\1' . $layoutPath, $layout);
		
		unset($file, $filebase, $layoutPath, $num);
		
		$template = new CTemplate();
		$template->setRoot('');
		$template->loadString($layout);
		unset($layout);
		
		$usrSvc = $system->getUserSvc();
		$usr = $usrSvc->getUser();
		$template->setParam('self', _SELF_);
		if(is_null($usr)) {
			$template->setParam('isUser', false);
			$template->setParam('isMasterAdmin', false);
			if(isset($_GET['error']) && ((int) $_GET['error']) != 0) {
				$errmsg[-1] = 'User not found';
				$errmsg[-2] = 'Unable to authenticate';
				$template->setParam('withError', true);
				$msgid = (int) $_GET['error'];
				$template->setParam('errormsg', $msgid . ':' . $errmsg[$msgid]);
			}
			else
				$template->setParam('withError', false);
		}
		else {
			$template->setParam('isUser', true);
			$template->setParam('withError', false);
			$template->setParam('isMasterAdmin', $usrSvc->userHasPriv($usr, $system->getSiteId(), false, false));
		}
		
		foreach($this->getRegions() as $region)
			$template->setParam($region, $this->getRegionContent($region));
		
		$template->setParam('title', 'Administration Interface');
		$template->setParam('HEADDATA', $this->buildHeadData($response));
		
		return $template->getDocument();
	}

	protected function buildHeadData(Response $response = NULL) {
		$headdata = "<!-- generated data -->";
		$headdata .= "<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\"/>";
		$headdata .= "<meta name=\"generator\" content=\"Mammut CMS\"/>";
		$headdata .= "<meta http-equiv=\"pragma\" content=\"no-cache\"/>";
//		if($this->addHtml5Fixes)
//			$headdata .= "<!--[if lt IE 9]> <script src=\"" . _JSURL_ . "/lib/html5shiv.js\"></script> <![endif]-->";
		if(!empty($response) && !empty($response->addons[Response::ADDON_CSS])) {
			foreach($response->addons[Response::ADDON_CSS] as $cssAddOn) {
				$headdata .= '<link rel="stylesheet" type="text/css"  href="' . $cssAddOn . '"/>';
			}
		}
		if(!empty($this->addHeaders)) {
			foreach($this->addHeaders as $headAddOn) {
				$headdata .= $headAddOn;
			}
		}
		if(!empty($response) && !empty($response->addons[Response::ADDON_JSLIB])) {
			$jsLibs = $response->addons[Response::ADDON_JSLIB];
			$jsLibs = array_unique($jsLibs);
			foreach($jsLibs as $jsAddOn)
				$headdata .= '<script src="'.$jsAddOn.'"></script>';
			unset($jsLibs,$jsAddOn);
		}
		$headdata .= "<!-- end of generated data -->\n";
		return $headdata;
	}
}