<?php
// No direct access
defined( '_JEXEC' ) or die( 'Restricted access' );
/**
 * $ModDesc
 * 
 * @version		$Id: helper.php $Revision
 * @package		modules
 * @subpackage	$Subpackage
 * @copyright	Copyright (C) May 2010 LandOfCoder.com <@emai:landofcoder@gmail.com>. All rights reserved.
 * @website 	htt://landofcoder.com
 * @license		GNU General Public License version 2
 */
if( !class_exists('LofK2DataSource') ) {
	require_once(JPATH_SITE.DS.'components'.DS.'com_k2'.DS.'helpers'.DS.'route.php');
require_once(JPATH_SITE.DS.'components'.DS.'com_k2'.DS.'helpers'.DS.'utilities.php');
	/**
	 * LofK2DataSource Class  extends the LofSliderGroupBase Class
	 */		
	 class LofK2DataSource extends LofDataSourceBase{
		
		/**
		 * @var string $__name 
		 *
		 * @access private;
		 */
		private $__name = 'k2';
		
		/**
		 * @var static $regex is a pattern using for maching imag tag.
		 * 
		 * @access public.
		 */
		static $regex = "#<img.+src\s*=\s*\"([^\"]*)\"[^\>]*\>#iU";	
		
		/**
		 * override get List of Item by the module's parameters
		 */
		public function getList( $params ){
			if( !self::isK2Existed() ){
				return array();
			} 
			return $this->__getList( $params );
		}
		
		
		/**
		 * check K2 Existed ?
		 */
		public function isK2Existed(){
			return is_file( JPATH_SITE.DS.  "components" . DS . "com_k2" . DS . "k2.php" );	
		}
		
		/**
		 * get the list of k2 items
		 * 
		 * @param JParameter $params;
		 * @return Array
		 */
		public function __getList( $params ){
			global $mainframe;
			$maxTitle  	   = $params->get( 'max_title', '100' );
			$maxDesciption = $params->get( 'max_description', 100 );
			$openTarget    = $params->get( 'open_target', 'parent' );
			$formatter     = $params->get( 'style_displaying', 'title' );
			$titleMaxChars = $params->get( 'title_max_chars', '100' );
			$descriptionMaxChars = $params->get( 'description_max_chars', 100 );
			$condition     = $this->buildConditionQuery( $params );
			
			$ordering      = $params->get( 'k2_ordering', 'created_asc');
			$limit 	       = $params->get( 'limit_items',  5 );
			$ordering      = str_replace( '_', '  ', $ordering );
			$my 	       = JFactory::getUser();
			$aid	       = $my->get( 'aid', 0 );
			$limitDescriptionBy = $params->get('limit_description_by','char');
			$thumbWidth    = (int)$params->get( 'thumbnail_width', 35 );
			$thumbHeight   = (int)$params->get( 'thumbnail_height', 60 );
			$imageHeight   = (int)$params->get( 'main_height', 300 ) ;
			$imageWidth    = (int)$params->get( 'main_width', 660 ) ;
			$isThumb       = $params->get( 'auto_renderthumb',1);
			$isStripedTags = $params->get( 'auto_strip_tags', 1 );
			$extraURL 		= $params->get('open_target')!='modalbox'?'':'&tmpl=component'; 
			$db	    = JFactory::getDBO();
			$date   = JFactory::getDate();
			$now    = $date->toSql();
			$showCommnent = $params->get( "itemComments", 0 ); 
			require_once ( JPath::clean(JPATH_SITE.'/components/com_k2/helpers/route.php') );
			$query = "SELECT a.*, cr.rating_sum/cr.rating_count as rating, c.name as category_title,
							c.id as categoryid, c.alias as categoryalias, c.params as categoryparams ".
					" FROM #__k2_items as a".
						" LEFT JOIN #__k2_categories c ON c.id = a.catid" .
						" LEFT JOIN #__k2_rating as cr ON a.id = cr.itemid";
				
			$query .= " WHERE a.published = 1"
						. " AND a.access IN (".implode(',', $my->getAuthorisedViewLevels()).")"
						. " AND a.trash = 0"
					;	
			if( $params->get('featured_items_show','0') == 0 ){
				$query.= " AND a.featured != 1";
			} elseif(  $params->get('featured_items_show','0') == 2 ) {
				$query.= " AND a.featured = 1";
			}
			
			$query .=  $condition . ' ORDER BY ' . $ordering;	
			$query .=  $limit ? ' LIMIT ' . $limit : '';
			
			$db->setQuery($query);
			$data = $db->loadObjectlist();
 
 			if( empty($data) ) return array();
		
			foreach( $data as $key =>  $item ){	
			 
					$item->link = JRoute::_(K2HelperRoute::getItemRoute($item->id.':'.$item->alias, $item->catid.':'.$item->categoryalias).$extraURL);
			 
				$item->date = JHtml::_('date', $item->created, JText::_('DATE_FORMAT_LC2')); 
				
				$item->subtitle = $this->substring( $item->title, $titleMaxChars );
 
				
				if( $limitDescriptionBy=='word' ){
					$string 		   = preg_replace( "/\s+/", " ", strip_tags($item->introtext) );
					$tmp 			   = explode(" ", $string);
					$item->description = $descriptionMaxChars>count($tmp)?$string:implode(" ",array_slice($tmp, 0, $descriptionMaxChars));
				} else {
					$item->description = self::substring( $item->introtext, $descriptionMaxChars, '', $isStripedTags );	
				}
				
				$item->rating = (is_numeric($item->rating))?floatval($item->rating / 5 * 100):null;
				
				$item->author = $item->created_by;													
				$item = $this->generateImages( $item, $isThumb );
				$item->categoryLink = urldecode(JRoute::_(K2HelperRoute::getCategoryRoute($item->catid.':'.urlencode($item->categoryalias))));
				$item->commentCount = 0;
				
				if( $showCommnent ){
					 $query = "SELECT COUNT(*) FROM #__k2_comments WHERE published=1 AND itemID={$item->id}";
					$db->setQuery($query);
					$item->commentCount = $db->loadResult();
				}				
				 
				
 			
				if ($params->get('itemAuthor')) {
					if (! empty($item->created_by_alias)) {
						$item->author = $item->created_by_alias;
						$item->authorGender = NULL;
						 
					} else {
						$author = JFactory::getUser($item->created_by);
						$item->author = $author->name;
						$query = "SELECT `gender` FROM #__k2_users WHERE userID=".(int)$author->id;
						$db->setQuery($query, 0, 1);
						$item->authorGender = $db->loadResult();
						 
						//Author Link
						$item->authorLink = JRoute::_(K2HelperRoute::getUserRoute($item->created_by));
					}
				}
				$data[$key] = $item;
			}
			return $data;	
		}
		
		
		public function generateImages( $item, $isThumb = true ){
		 	$item = self::parseImages( $item ); 
			foreach($this->_imagesRendered as $key => $value ){ // echo '<pre>'.print_r($this->_imagesRendered,1);die;
				if( $item->{$key} &&  $image=$this->renderThumb($item->{$key}, $value[0], $value[1], $item->title, $isThumb) ){
					$item->{$key} = $image;
				}
			}
			return $item;
		}
		
		/**
		 * build condition query base parameter  
		 * 
		 * @param JParameter $params;
		 * @return string.
		 */
		public  function buildConditionQuery( $params ){
			$source = trim($params->get( 'k2_source', 'k2_category' ) );
			if( $source == 'k2_category' ){
				$catids = $params->get( 'k2_category','');
				
				if( !$catids ){
					return '';
				}
				$catids = !is_array($catids) ? $catids : '"'.implode('","',$catids).'"';
				$condition = ' AND  a.catid IN( '.$catids.' )';
			} else {
				$ids = preg_split('/,/',$params->get( 'k2_items_ids',''));	
				$tmp = array();
				foreach( $ids as $id ){
					$tmp[] = (int) trim($id);
				}
				$condition = " AND a.id IN('". implode( "','", $tmp ) ."')";
			}
			return $condition;
		}
		
		/**
		 * looking for image inside the media folder.
		 */
		public static function  lookingForK2Image( $item, $size='XL' ){
			//Image
			$item->imageK2Image=''; 
			if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_'.$size.'.jpg'))
				$item->imageK2Image = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_'.$size.'.jpg';
			return $item; 
		}
		
		/**
		 * parser a image in the content of article.
		 *
		 * @param poiter $row .
		 * @return void
		 */
		public static function parseImages(  $row ){
			$text =  $row->introtext.$row->fulltext;
			$data = self::parserCustomTag( $text );
			if( isset($data[1][0]) ){
				$tmp = $this->parseParams( $data[1][0] );
				$row->mainImage = isset($tmp['src']) ? $tmp['src']:'';
				$row->thumbnail = $row->mainImage ;// isset($tmp['thumb']) ?$tmp['thumb']:'';	
			} else {
				$row  = self::lookingForK2Image( $row );
				
				if( $row->imageK2Image != '' ){
					$row->thumbnail = $row->mainImage = $row->imageK2Image;	
					return $row;
				} 
				preg_match ( self::$regex, $text, $matches); 
				$images = (count($matches)) ? $matches : array();
			
				if (count($images)){
					$row->introtext = str_replace($images[1],"",$row->introtext);
					$row->mainImage = $images[1];
					$row->thumbnail = $images[1];
				} else {
					$row->thumbnail = '';
					$row->mainImage = '';	
				}
			}
			return $row;
		}
	}
}
?>