<?php
/* $Id$ */
(defined('MCMS') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

use \Mammut\Template\CTemplate;
use \MCMS\Interfaces\iSystem;
use \MCMS\Response;
use \MCMS\System;

/**
 * Default layout plugin
 * 
 * @author Stefan Daurer
 * @since 1.0.0.0
 */
class PlugInMMPILayout implements \MCMS\Plugin\iPlugInLayout {
	protected $layout;
	protected $fragments;
	public $addHeaders = array();
	protected $addHtml5Fixes = true;
	protected $generator = 'Mammut CMS (mammut.qdevzone.net)';
	private $baseregions = array(
			'TITLE','KEYWORDS','DESC','LANG','CONTENT','MENU1','MENU2','DEBUGINFO');
	private $addonRegions = array();

	public function __construct() {
	}

	public function getRegions() {
		return array_merge($this->baseregions, $this->addonRegions);
	}

	public function registerRegion($name) {
		if(array_search($name, $this->addonRegions) === false) {
			$this->addonRegions[] = $name;
		}
	}

	public function setRegionContent($region, $content) {
		$this->fragments[$region] = $content;
	}

	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
	 */
	protected function getFileOutput($filename) {
		if(!file_exists($filename))
			return NULL;
		ob_start();
		include ($filename);
		return ob_get_clean();
	}

	protected function addBaseData(iSystem $system, $siteId) {
		$this->setRegionContent('TITLE', $system->getSiteParam($siteId, '', 'title', 'Unnamed Page'));
		$this->setRegionContent('DESC', $system->getSiteParam($siteId, '', 'layout_desc', ''));
		$this->setRegionContent('KEYWORDS', $system->getSiteParam($siteId, '', 'layout_tags', ''));
		$this->setRegionContent('LANG', $system->getActiveLocale());
	}

	public function getDocument($media, Response $response = NULL) {
		$system = System::getInstance();
		$db = $system->getDB();
		$agent = $system->getRequest()->getUserAgent();
		
		$site = $db->getObjectP("SELECT * FROM websites WHERE id=?", array($system->getSiteId()));
		$this->setRegionContent('TITLE', $system->getSiteParam($system->getSiteId(), '', 'title', 'Unnamed Page'));
		$this->setRegionContent('DESC', $system->getSiteParam($system->getSiteId(), '', 'layout_desc', ''));
		$this->setRegionContent('KEYWORDS', $system->getSiteParam($system->getSiteId(), '', 'layout_tags', ''));
		$this->setRegionContent('LANG', $system->getActiveLocale());
		
		$this->layout = $system->getSiteParam($system->getSiteId(), '', 'layout', 'default');
		$filebase = __DS__ . $this->layout . __DS__;
		$layoutbase = false;
		// start offline part
		if($site->online == 'offline') {
			foreach(array(
					_LAYOUTPATHX_ . $filebase . '_offline_.php',
					_LAYOUTPATH_ . $filebase . '_offline_.php',
					_LAYOUTPATH_ . __DS__ . '_system_' . __DS__ . '_offline_.php') as $layoutPath) {
				if(file_exists($layoutPath)) {
					$layout = $this->getFileOutput($layoutPath);
					break;
				}
			}
			$template = new CTemplate();
			$template->setRoot('');
			$template->loadString($layout);
			unset($layout);
			
			$usrSvc = $system->getUserSvc();
			$usr = $usrSvc->getUser();
			if(is_null($usr)) {
				$template->setParam('isUser', false);
				$template->setParam('isMasterAdmin', false);
			}
			else {
				$template->setParam('isUser', true);
				$template->setParam('isMasterAdmin', $usrSvc->userHasPriv($usr, $system->getSiteId(), false, false));
			}
			
			foreach($this->getRegions() as $region)
				$template->setParam($region, $this->getRegionContent($region));
			
			$template->setParam('HEADDATA', $this->buildHeadData());
			$template->setParam('DEBUGINFO', false);
			
			return $template->getDocument();
		} // end offline part
		

		if(defined('_SERVICE_'))
			return $this->fragments['CONTENT'];
		
		$num = 0;
		$layout = NULL;
		
		if($media == 'error') {
			foreach(array(
					_LAYOUTPATHX_ . $filebase . '_error_.php',
					_LAYOUTPATH_ . $filebase . '_error_.php',
					_LAYOUTPATH_ .__DS__. '_system_' . __DS__ . '_error_.php'
				) as $layoutPath) {
				if(file_exists($layoutPath)) {
					$layout = $this->getFileOutput($layoutPath);
					$layoutbase = dirname($layoutPath);
					break;
				}
				$num++;
			}
		}
		else {
			if($agent->isConsole()) {
				switch($media) {
					case 'print':
						$file = 'print.php';
					break;
					default:
						$file = 'console.php';
					break;
				}
			}
			elseif($agent->isMobile()) {
				switch($media) {
					case 'print':
						$file = 'print.php';
					break;
					default:
						if($agent->isSmallScreen())
							$file = 'small.php';
						else
							$file = 'mobile.php';
					break;
				}
			}
			elseif($agent->isSmallScreen()) {
				switch($media) {
					case 'print':
						$file = 'print.php';
					break;
					case 'popup':
						$file = 'popup.php';
					break;
					default:
						$file = 'small.php';
					break;
				}
			}
			else {
				switch($media) {
					case 'print':
						$file = 'print.php';
					break;
					case 'popup':
						$file = 'popup.php';
					break;
					default:
						$file = 'default.php';
					break;
				}
			}
			foreach(array(
					array(_LAYOUTPATHX_ . $filebase . $file,_LAYOUTURLX_ . $filebase),
					array(_LAYOUTPATHX_ . $filebase . 'default.php',_LAYOUTURLX_ . $filebase),
					array(_LAYOUTPATH_ . $filebase . $file,_LAYOUTURL_ . $filebase),
					array(_LAYOUTPATH_ . $filebase . 'default.php',_LAYOUTURL_ . $filebase)) as $layoutPath) {
				if(file_exists($layoutPath[0])) {
					$layout = $this->getFileOutput($layoutPath[0]);
					$layoutbase = dirname($layoutPath[0]);
					$layouturl = str_replace(__DS__, '/', $layoutPath[1]);
					break;
				}
				$num++;
			}
		}
		if(is_null($layout))
			throw new RuntimeException($system->getConfig('layout') . ' is an invalid layout (base: ' . $filebase . ')');
		
		$layout = preg_replace('#<!--/.*?-->#', '', $layout); // remove hidden comments
		

		// minimize html
		if($system->getSiteParam($system->getSiteId(), '', 'layout_htmlmin', '') == 'y') {
			$count = 0;
			do
				$layout = preg_replace('#<head(.*?)>\\s+<(.*?)/head>#is', '<head\\1><\\2/head>', $layout, 1, $count); while($count > 0);
			$layout = preg_replace('#\\s+\n#i', "\n", $layout);
			$layout = preg_replace('#>\\s+<(/?div|/?p|/?h[1-9])#is', "><\\1", $layout);
			$layout = preg_replace('#^\\s+<(/?div|/?p|/?h[1-9])#im', " <\\1", $layout);
		}
		
		// minimize css
		if($system->getSiteParam($system->getSiteId(), '', 'layout_cssmin', '') == 'y') {
			$cachedir = _DATAPATH_ . __DS__ . 'cache' . __DS__ . 'public' . __DS__ . 'mmpilayout';
			if(!is_dir($cachedir))
				mkdir($cachedir);
			$cachedir = $cachedir . __DS__ . 'css';
			if(!is_dir($cachedir))
				mkdir($cachedir);
			$cacheurl = _DATAURL_ . '/cache/public/mmpilayout/css';
			
			preg_match_all('#<link[^>]*href="./([a-zA-Z0-9_-]*/){0,1}([a-zA-Z0-9_-]*\.[cC][sS]{2})"[^>]*/>#is', $layout, $match);
			if(count($match) > 0) {
				unset($match[0]);
				foreach($match[2] as $fid=>$cssfile) {
					if(empty($match[1][$fid])) {
						$linkurlbase = $layouturl;
						$basefile = $layoutbase . __DS__ . $cssfile;
						$baseurl = './' . $cssfile;
						$targetfile = $cachedir . __DS__ . $system->getSiteId() . __DS__ . $cssfile;
						$targeturl = $cacheurl . '/' . $system->getSiteId() . '/' . $cssfile;
					}
					else {
						$linkurlbase = $layouturl . '/' . $match[1][$fid];
						$basefile = $layoutbase . __DS__ . $match[1][$fid] . __DS__ . $cssfile;
						$baseurl = './' . $match[1][$fid] . $cssfile;
						$targetfile = $cachedir . __DS__ . $system->getSiteId() . __DS__ . $match[1][$fid] . __DS__ . $cssfile;
						$targeturl = $cacheurl . '/' . $system->getSiteId() . '/' . $match[1][$fid] . $cssfile;
					}
					if(file_exists($basefile)) {
						$basetime = filemtime($basefile);
						$layout = str_replace($baseurl, $targeturl, $layout);
						if(file_exists($targetfile) && ($basetime == filemtime($targetfile)))
							continue;
						$css = file_get_contents($basefile);
						$css = preg_replace('%url\\(\\./%i', 'url(\\1' . $linkurlbase, $css);
						
						$css = \Misc\CSSMin::minify($css);
						if(!is_dir($cachedir . __DS__ . $system->getSiteId()))
							mkdir($cachedir . __DS__ . $system->getSiteId());
						if(!empty($match[1][$fid]) && !is_dir(dirname($targetfile)))
							mkdir(dirname($targetfile));
						file_put_contents($targetfile, $css);
						touch($targetfile, $basetime);
					}
				}
			}
		}
		
		// modifiy relative links to match new location
		$layoutPath = array(_LAYOUTPATHX_,_LAYOUTPATHX_,_LAYOUTPATH_,_LAYOUTPATH_);
		$layoutPath = $layoutPath[$num] . $filebase;
		$layoutPath = preg_replace('#^' . addslashes(_BASEPATH_) . '#', '', $layoutPath, 1);
		$layoutPath = _BASEURL_ . $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 = $usrSvc->getUser();
		if(is_null($usr)) {
			$template->setParam('isUser', false);
			$template->setParam('isMasterAdmin', false);
		}
		else {
			$template->setParam('isUser', true);
			$template->setParam('isMasterAdmin', $usrSvc->userHasPriv($usr, $system->getSiteId(), false, false));
		}
		
		if($media == 'error')
			$template->setParam('ERROR', $this->getRegionContent('ERROR'));
		
		foreach($this->getRegions() as $region)
			$template->setParam($region, $this->getRegionContent($region));
		
		$template->setParam('HEADDATA', $this->buildHeadData($response));
		$template->setParam('DEBUGINFO', false);
		
		return $template->getDocument();
	}

	protected function buildHeadData(Response $response = NULL) {
		$headdata = "<!-- generated data -->";
		$headdata .= "<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\"/>";
		$headdata .= "<meta name=\"generator\" content=\"{$this->generator}\"/>";
		$headdata .= "<meta http-equiv=\"pragma\" content=\"no-cache\"/>";
		if($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;
	}
}