<?php
/**
 * @version		$Id: itemlist.php 1515 2012-03-06 10:54:41Z lefteris.kavadas $
 * @package		K2
 * @author		JoomlaWorks http://www.joomlaworks.net
 * @copyright	Copyright (c) 2006 - 2012 JoomlaWorks Ltd. All rights reserved.
 * @license		GNU/GPL license: http://www.gnu.org/copyleft/gpl.html
 */

// no direct access
defined('_JEXEC') or die('Restricted access');

jimport('joomla.application.component.model');

JTable::addIncludePath(JPATH_COMPONENT_ADMINISTRATOR.DS.'tables');

class K2ModelItemlist extends JModel {

		function getData($ordering = NULL) {

				$user = &JFactory::getUser();
				$aid = $user->get('aid');
				$db = &JFactory::getDBO();
				$params = &K2HelperUtilities::getParams('com_k2');
				$limitstart = JRequest::getInt('limitstart');
				$limit = JRequest::getInt('limit');
				$task = JRequest::getCmd('task');
				if($task=='search' && $params->get('googleSearch'))
					return array();

				$jnow = &JFactory::getDate();
				$now = $jnow->toMySQL();
				$nullDate = $db->getNullDate();

				if (JRequest::getWord('format') == 'feed')
						$limit = $params->get('feedLimit');

				$query = "SELECT i.*, CASE WHEN i.modified = 0 THEN i.created ELSE i.modified END as lastChanged, c.name as categoryname,c.id as categoryid, c.alias as categoryalias, c.params as categoryparams";
				if ($ordering == 'best')
						$query .= ", (r.rating_sum/r.rating_count) AS rating";

				$query.=" FROM #__k2_items as i LEFT JOIN #__k2_categories AS c ON c.id = i.catid";

				if ($ordering == 'best')
						$query .= " LEFT JOIN #__k2_rating r ON r.itemID = i.id";

				//Changed the query for the tag case for better performance
				//if ($task == 'tag')
				//		$query .= " LEFT JOIN #__k2_tags_xref AS tags_xref ON tags_xref.itemID = i.id LEFT JOIN #__k2_tags AS tags ON tags.id = tags_xref.tagID";

				if($task=='user' && !$user->guest && $user->id==JRequest::getInt('id')){
					$query .= " WHERE ";
				}
				else {
					 $query .= " WHERE i.published = 1 AND ";
				}

				if(K2_JVERSION=='16'){

					$query .= "i.access IN(".implode(',', $user->authorisedLevels()).")"
					." AND i.trash = 0"
					." AND c.published = 1"
					." AND c.access IN(".implode(',', $user->authorisedLevels()).")"
					." AND c.trash = 0";
										
					$mainframe = &JFactory::getApplication();
					$languageFilter = $mainframe->getLanguageFilter();
					if($languageFilter) {
						$languageTag = JFactory::getLanguage()->getTag();
						$query .= " AND c.language IN (".$db->quote($languageTag).",".$db->quote('*').") 
						AND i.language IN (".$db->quote($languageTag).",".$db->quote('*').")" ;
					}
				}
				else {
	 				$query .= "i.access <= {$aid}"
					." AND i.trash = 0"
					." AND c.published = 1"
					." AND c.access <= {$aid}"
					." AND c.trash = 0"; 				
				}


				if( !($task=='user' && !$user->guest && $user->id==JRequest::getInt('id') )) {
					$query .= " AND ( i.publish_up = ".$db->Quote($nullDate)." OR i.publish_up <= ".$db->Quote($now)." )";
					$query .= " AND ( i.publish_down = ".$db->Quote($nullDate)." OR i.publish_down >= ".$db->Quote($now)." )";
				}

				//Build query depending on task
				switch ($task) {

						case 'category':
								$id = JRequest::getInt('id');

								$category = &JTable::getInstance('K2Category', 'Table');
								$category->load($id);
								$cparams = new JParameter($category->params);

								if ($cparams->get('inheritFrom')) {

										$parent = &JTable::getInstance('K2Category', 'Table');
										$parent->load($cparams->get('inheritFrom'));
										$cparams = new JParameter($parent->params);
								}

								if ($cparams->get('catCatalogMode')) {
										$query .= " AND c.id={$id} ";
								} else {
										$categories = K2ModelItemlist::getCategoryTree($id);
										$sql = @implode(',', $categories);
										$query .= " AND c.id IN ({$sql})";
								}


								break;

						case 'user':
								$id = JRequest::getInt('id');
								$query .= " AND i.created_by={$id} AND i.created_by_alias=''";
								$categories = $params->get('userCategoriesFilter', NULL);
								if (is_array($categories)){
										$categories = array_filter($categories);
									JArrayHelper::toInteger($categories);
										$query .= " AND i.catid IN(".implode(',', $categories).")";
								}
								if (is_string($categories) && $categories>0){
										$query .= " AND i.catid = {$categories}";
								}
								break;

						case 'search':
								$badchars = array('#', '>', '<', '\\');
								$search = trim(str_replace($badchars, '', JRequest::getString('searchword', null)));
								$sql = K2ModelItemlist::prepareSearch($search);
								if (! empty($sql)) {
										$query .= $sql;
								} else {
										$rows = array();
										return $rows;
								}
								break;

						case 'date':
								if ((JRequest::getInt('month')) && (JRequest::getInt('year'))) {
										$month = JRequest::getInt('month');
										$year = JRequest::getInt('year');
										$query .= " AND MONTH(i.created) = {$month} AND YEAR(i.created)={$year} ";
										if (JRequest::getInt('day')) {
												$day = JRequest::getInt('day');
												$query .= " AND DAY(i.created) = {$day}";
										}

										if (JRequest::getInt('catid')) {
												$catid = JRequest::getInt('catid');
												$query .= " AND i.catid={$catid}";
										}

								}
								break;

						case 'tag':
								$tag = JRequest::getString('tag');
								jimport('joomla.filesystem.file');
								if (JFile::exists(JPATH_ADMINISTRATOR.DS.'components'.DS.'com_joomfish'.DS.'joomfish.php') && $task == 'tag') {

										$registry = &JFactory::getConfig();
										$lang = $registry->getValue("config.jflang");

										$sql = " SELECT reference_id FROM #__jf_content as jfc LEFT JOIN #__languages as jfl ON jfc.language_id = jfl.".K2_JF_ID;
										$sql .= " WHERE jfc.value = ".$db->Quote($tag);
										$sql .= " AND jfc.reference_table = 'k2_tags'";
										$sql .= " AND jfc.reference_field = 'name' AND jfc.published=1";

										$db->setQuery($sql, 0, 1);
										$result = $db->loadResult();

								}
								
								if (JFile::exists(JPATH_ADMINISTRATOR.DS.'components'.DS.'com_falang'.DS.'falang.php') && $task == 'tag') {

										$registry = &JFactory::getConfig();
										$lang = $registry->getValue("config.jflang");

										$sql = " SELECT reference_id FROM #__falang_content as fc LEFT JOIN #__languages as fl ON fc.language_id = fl.lang_id";
										$sql .= " WHERE fc.value = ".$db->Quote($tag);
										$sql .= " AND fc.reference_table = 'k2_tags'";
										$sql .= " AND fc.reference_field = 'name' AND fc.published=1";

										$db->setQuery($sql, 0, 1);
										$result = $db->loadResult();

								}
								
								if (!isset($result) || $result < 1) {
										$sql = "SELECT id FROM #__k2_tags WHERE name=".$db->Quote($tag);
										$db->setQuery($sql, 0, 1);
										$result = $db->loadResult();
								}
								
								$query.=" AND i.id IN (SELECT itemID FROM #__k2_tags_xref WHERE tagID=".(int)$result.")";

								/*if (isset($result) && $result > 0) {
										$query .= " AND (tags.id) = {$result}";
								} else {
										$query .= " AND (tags.name) = ".$db->Quote($tag);
								}*/

								$categories = $params->get('categoriesFilter', NULL);
								if (is_array($categories)){
									JArrayHelper::toInteger($categories);
										$query .= " AND i.catid IN(".implode(',', $categories).")";
								}
								if (is_string($categories))
										$query .= " AND i.catid = {$categories}";
								break;

						default:
								$searchIDs = $params->get('categories');

								if (is_array($searchIDs) && count($searchIDs)) {

										if ($params->get('catCatalogMode')) {
												$sql = @implode(',', $searchIDs);
												$query .= " AND i.catid IN ({$sql})";
										} else {
												
												$result = K2ModelItemlist::getCategoryTree($searchIDs);
												if (count($result)) {
														$sql = @implode(',', $result);
														$query .= " AND i.catid IN ({$sql})";
												}
										}
								}

								break;
				}

				//Set featured flag
				if ($task == 'category' || empty($task)) {
						if (JRequest::getInt('featured') == '0') {
								$query .= " AND i.featured != 1";
						} else if (JRequest::getInt('featured') == '2') {
								$query .= " AND i.featured = 1";
						}
				}

				//Remove duplicates
				//$query .= " GROUP BY i.id";

				//Set ordering
				switch ($ordering) {

						case 'date':
								$orderby = 'i.created ASC';
								break;

						case 'rdate':
								$orderby = 'i.created DESC';
								break;

						case 'alpha':
								$orderby = 'i.title';
								break;

						case 'ralpha':
								$orderby = 'i.title DESC';
								break;

						case 'order':
								if (JRequest::getInt('featured') == '2')
										$orderby = 'i.featured_ordering';
								else
										$orderby = 'c.ordering, i.ordering';
								break;

						case 'rorder':
								if (JRequest::getInt('featured') == '2')
										$orderby = 'i.featured_ordering DESC';
								else
										$orderby = 'c.ordering DESC, i.ordering DESC';
								break;
								
						case 'featured':
								$orderby = 'i.featured DESC, i.created DESC';
								break;

						case 'hits':
								$orderby = 'i.hits DESC';
								break;

						case 'rand':
								$orderby = 'RAND()';
								break;

						case 'best':
								$orderby = 'rating DESC';
								break;
								
						case 'modified':
								$orderby = 'lastChanged DESC';
								break;
					
						case 'publishUp':
								$orderby = 'i.publish_up DESC';
								break;

						case 'id':
						default:
								$orderby = 'i.id DESC';
								break;
				}

				$query .= " ORDER BY ".$orderby;
				$dispatcher = JDispatcher::getInstance();
				JPluginHelper::importPlugin ('k2');
				$dispatcher->trigger('onK2BeforeSetQuery', array(&$query));
				$db->setQuery($query, $limitstart, $limit);
				$rows = $db->loadObjectList();
				return $rows;
		}

		function getTotal() {

				$user = &JFactory::getUser();
				$aid = $user->get('aid');
				$db = &JFactory::getDBO();
				$params = &K2HelperUtilities::getParams('com_k2');
				$task = JRequest::getCmd('task');

				if($task=='search' && $params->get('googleSearch'))
					return 0;

				$jnow = &JFactory::getDate();
				$now = $jnow->toMySQL();
				$nullDate = $db->getNullDate();

				$query = "SELECT COUNT(*) FROM #__k2_items as i LEFT JOIN #__k2_categories c ON c.id = i.catid";

				if ($task == 'tag')
						$query .= " LEFT JOIN #__k2_tags_xref tags_xref ON tags_xref.itemID = i.id LEFT JOIN #__k2_tags tags ON tags.id = tags_xref.tagID";

				if($task=='user' && !$user->guest && $user->id==JRequest::getInt('id')){
					$query .= " WHERE ";
				}
				else {
					 $query .= " WHERE i.published = 1 AND ";
				}
				
				if(K2_JVERSION=='16'){
					$query .= "i.access IN(".implode(',', $user->authorisedLevels()).")"
					." AND i.trash = 0"
					." AND c.published = 1"
					." AND c.access IN(".implode(',', $user->authorisedLevels()).")"
					." AND c.trash = 0";
					
					$mainframe = &JFactory::getApplication();
					$languageFilter = $mainframe->getLanguageFilter();
					if($languageFilter) {
						$languageTag = JFactory::getLanguage()->getTag();
						$query .= " AND c.language IN (".$db->quote($languageTag).",".$db->quote('*').") 
						AND i.language IN (".$db->quote($languageTag).",".$db->quote('*').")" ;
					}
				}
				else {
					$query .= "i.access <= {$aid}"
					." AND i.trash = 0"
					." AND c.published = 1"
					." AND c.access <= {$aid}"
					." AND c.trash = 0";
				}
				
				$query .= " AND ( i.publish_up = ".$db->Quote($nullDate)." OR i.publish_up <= ".$db->Quote($now)." )";
				$query .= " AND ( i.publish_down = ".$db->Quote($nullDate)." OR i.publish_down >= ".$db->Quote($now)." )";

				//Build query depending on task
				switch ($task) {

						case 'category':
								$id = JRequest::getInt('id');

								$category = &JTable::getInstance('K2Category', 'Table');
								$category->load($id);
								$cparams = new JParameter($category->params);

								if ($cparams->get('inheritFrom')) {

										$parent = &JTable::getInstance('K2Category', 'Table');
										$parent->load($cparams->get('inheritFrom'));
										$cparams = new JParameter($parent->params);
								}

								if ($cparams->get('catCatalogMode')) {
										$query .= " AND c.id={$id} ";
								} else {
										$categories = K2ModelItemlist::getCategoryTree($id);
										$sql = @implode(',', $categories);
										$query .= " AND c.id IN ({$sql})";
								}


								break;


						case 'user':
								$id = JRequest::getInt('id');
								$query .= " AND i.created_by={$id} AND i.created_by_alias=''";
								$categories = $params->get('userCategoriesFilter', NULL);
								if (is_array($categories)){
										$categories = array_filter($categories);
									JArrayHelper::toInteger($categories);
										$query .= " AND i.catid IN(".implode(',', $categories).")";
								}
								if (is_string($categories) && $categories>0){
										$query .= " AND i.catid = {$categories}";
								}
								break;

						case 'search':
								$badchars = array('#', '>', '<', '\\');
								$search = trim(str_replace($badchars, '', JRequest::getString('searchword', null)));
								$sql = K2ModelItemlist::prepareSearch($search);
								if (! empty($sql)) {
										$query .= $sql;
								} else {
										$result = 0;
										return $result;
								}
								break;

						case 'date':
								if ((JRequest::getInt('month')) && (JRequest::getInt('year'))) {
										$month = JRequest::getInt('month');
										$year = JRequest::getInt('year');
										$query .= " AND MONTH(i.created) = {$month} AND YEAR(i.created)={$year} ";
										if (JRequest::getInt('day')) {
												$day = JRequest::getInt('day');
												$query .= " AND DAY(i.created) = {$day}";
										}

										if (JRequest::getInt('catid')) {
												$catid = JRequest::getInt('catid');
												$query .= " AND i.catid={$catid}";
										}

								}
								break;

						case 'tag':
								$tag = JRequest::getString('tag');
								jimport('joomla.filesystem.file');
								if (JFile::exists(JPATH_ADMINISTRATOR.DS.'components'.DS.'com_joomfish'.DS.'joomfish.php') && $task == 'tag') {

										$registry = &JFactory::getConfig();
										$lang = $registry->getValue("config.jflang");

										$sql = " SELECT reference_id FROM #__jf_content as jfc LEFT JOIN #__languages as jfl ON jfc.language_id = jfl.".K2_JF_ID;
										$sql .= " WHERE jfc.value = ".$db->Quote($tag);
										$sql .= " AND jfc.reference_table = 'k2_tags'";
										$sql .= " AND jfc.reference_field = 'name' AND jfc.published=1";

										$db->setQuery($sql, 0, 1);
										$result = $db->loadResult();

								}
								
								if (JFile::exists(JPATH_ADMINISTRATOR.DS.'components'.DS.'com_falang'.DS.'falang.php') && $task == 'tag') {

										$registry = &JFactory::getConfig();
										$lang = $registry->getValue("config.jflang");

										$sql = " SELECT reference_id FROM #__falang_content as fc LEFT JOIN #__languages as fl ON fc.language_id = fl.lang_id";
										$sql .= " WHERE fc.value = ".$db->Quote($tag);
										$sql .= " AND fc.reference_table = 'k2_tags'";
										$sql .= " AND fc.reference_field = 'name' AND fc.published=1";

										$db->setQuery($sql, 0, 1);
										$result = $db->loadResult();

								}

								if (isset($result) && $result > 0) {
										$query .= " AND (tags.id) = {$result}";
								} else {
										$query .= " AND (tags.name) = ".$db->Quote($tag);
								}
								$categories = $params->get('categoriesFilter', NULL);
								if (is_array($categories))
										$query .= " AND i.catid IN(".implode(',', $categories).")";
								if (is_string($categories))
										$query .= " AND i.catid = {$categories}";
								break;

						default:
								$searchIDs = $params->get('categories');

								if (is_array($searchIDs) && count($searchIDs)) {

										if ($params->get('catCatalogMode')) {
												$sql = @implode(',', $searchIDs);
												$query .= " AND i.catid IN ({$sql})";
										} else {
 											$result = K2ModelItemlist::getCategoryTree($searchIDs);
												if (count($result)) {
														$sql = @implode(',', $result);
														$query .= " AND i.catid IN ({$sql})";
												}
										}
								}

								break;
				}

				//Set featured flag
				if ($task == 'category' || empty($task)) {
						if (JRequest::getVar('featured') == '0') {
								$query .= " AND i.featured != 1";
						} else if (JRequest::getVar('featured') == '2') {
								$query .= " AND i.featured = 1";
						}
				}
				$dispatcher = JDispatcher::getInstance();
				JPluginHelper::importPlugin ('k2');
				$dispatcher->trigger('onK2BeforeSetQuery', array(&$query));
				$db->setQuery($query);
				$result = $db->loadResult();
				return $result;
		}
		
		function getCategoryTree($categories){
			$mainframe = &JFactory::getApplication();
			$db = &JFactory::getDBO();
			$user = &JFactory::getUser();
			$aid = (int) $user->get('aid');
			if(!is_array($categories)){
				$categories = (array)$categories;
			}
			JArrayHelper::toInteger($categories);
			$categories = array_unique($categories);
			sort($categories);
			$key = implode('|', $categories);
			$clientID = $mainframe->getClientId();
			static $K2CategoryTreeInstances = array();
			if(isset($K2CategoryTreeInstances[$clientID]) && array_key_exists($key, $K2CategoryTreeInstances[$clientID])){
				return $K2CategoryTreeInstances[$clientID][$key];
			}
			$array = $categories;
			while(count($array)){
				$query = "SELECT id
						FROM #__k2_categories 
						WHERE parent IN (".implode(',', $array).") 
						AND id NOT IN (".implode(',', $array).") ";
				if($mainframe->isSite()){
					$query.="
								AND published=1 
								AND trash=0";
					if(K2_JVERSION=='16'){
						$query.= " AND access IN(".implode(',', $user->authorisedLevels()).")";
						if($mainframe->getLanguageFilter()) {
							$query.= " AND language IN(".$db->Quote(JFactory::getLanguage()->getTag()).", ".$db->Quote('*').")";
						}
					}
					else{
						$query.=" AND access<={$aid}";
					}
				}
				$db->setQuery($query);
				$array = $db->loadResultArray();
				$categories = array_merge($categories, $array);
			}
			JArrayHelper::toInteger($categories);
			$categories = array_unique($categories);
			$K2CategoryTreeInstances[$clientID][$key] = $categories;
			return $categories;
		}


		// Deprecated function, left for compatibility reasons
		function getCategoryChildren($catid, $clear = false) {

			static $array = array();
			if ($clear)
			$array = array();
			$user = &JFactory::getUser();
			$aid = (int) $user->get('aid');
			$catid = (int) $catid;
			$db = &JFactory::getDBO();
			$query = "SELECT * FROM #__k2_categories WHERE parent={$catid} AND published=1 AND trash=0 AND access<={$aid} ORDER BY ordering ";
			$db->setQuery($query);
			$rows = $db->loadObjectList();

			foreach ($rows as $row) {
				array_push($array, $row->id);
				if (K2ModelItemlist::hasChildren($row->id)) {
					K2ModelItemlist::getCategoryChildren($row->id);
				}
			}
			return $array;
		}

		// Deprecated function, left for compatibility reasons
		function hasChildren($id) {

			$user = &JFactory::getUser();
			$aid = (int) $user->get('aid');
			$id = (int) $id;
			$db = &JFactory::getDBO();
			$query = "SELECT * FROM #__k2_categories WHERE parent={$id} AND published=1 AND trash=0 AND access<={$aid} ";
			$db->setQuery($query);
			$rows = $db->loadObjectList();

			if (count($rows)) {
				return true;
			} else {
				return false;
			}
		}

		function getCategoryFirstChildren($catid, $ordering = NULL) {

				$mainframe = &JFactory::getApplication();
				$user = &JFactory::getUser();
				$aid = $user->get('aid');
				$db = &JFactory::getDBO();
				$query = "SELECT * FROM #__k2_categories WHERE parent={$catid} AND published=1 AND trash=0";
				
				if(K2_JVERSION=='16'){
					$query.= " AND access IN(".implode(',', $user->authorisedLevels()).") ";
					if($mainframe->getLanguageFilter()) {
						$query.= " AND language IN(".$db->Quote(JFactory::getLanguage()->getTag()).", ".$db->Quote('*').")";
					}
				}
				else {
					$query.= " AND access<={$aid} ";
				}

				switch ($ordering) {

						case 'order':
								$order = " ordering ASC";
								break;

						case 'alpha':
								$order = " name ASC";
								break;

						case 'ralpha':
								$order = " name DESC";
								break;

						case 'reversedefault':
								$order = " id DESC";
								break;

						default:
								$order = " id ASC";
								break;

				}

				$query .= " ORDER BY {$order}";

				$db->setQuery($query);
				$rows = $db->loadObjectList();
				if ($db->getErrorNum()) {
						echo $db->stderr();
						return false;
				}

				return $rows;
		}

		function countCategoryItems($id) {

				$mainframe = &JFactory::getApplication();
				$user = &JFactory::getUser();
				$aid = (int) $user->get('aid');
				$id = (int) $id;
				$db = &JFactory::getDBO();

				$jnow = &JFactory::getDate();
				$now = $jnow->toMySQL();
				$nullDate = $db->getNullDate();

				$categories = K2ModelItemlist::getCategoryTree($id);
				$query = "SELECT COUNT(*) FROM #__k2_items WHERE catid IN (".implode(',', $categories).") AND published=1 AND trash=0";

				if(K2_JVERSION=='16'){
					$query .= " AND access IN(".implode(',', $user->authorisedLevels()).") ";
					if($mainframe->getLanguageFilter()) {
						$query.= " AND language IN(".$db->Quote(JFactory::getLanguage()->getTag()).", ".$db->Quote('*').")";
					}
				}
				else {
					$query .=" AND access<=".$aid;
				}
				
				
				$query .= " AND ( publish_up = ".$db->Quote($nullDate)." OR publish_up <= ".$db->Quote($now)." )";
				$query .= " AND ( publish_down = ".$db->Quote($nullDate)." OR publish_down >= ".$db->Quote($now)." )";
				$db->setQuery($query);
				$total = $db->loadResult();
				return $total;
		}

		function getUserProfile($id = NULL) {

				$db = &JFactory::getDBO();
				if (is_null($id))
						$id = JRequest::getInt('id');
				else
					$id = (int) $id;
				$query = "SELECT id, gender, description, image, url, `group`, plugins FROM #__k2_users WHERE userID={$id}";
				$db->setQuery($query);
				$row = $db->loadObject();
				return $row;
		}

		function getAuthorLatest($itemID, $limit, $userID) {

				$mainframe = &JFactory::getApplication();
				$user = &JFactory::getUser();
				$aid = (int) $user->get('aid');
				$itemID = (int) $itemID;
				$userID = (int) $userID;
				$limit = (int) $limit;
				$db = &JFactory::getDBO();

				$jnow = &JFactory::getDate();
				$now = $jnow->toMySQL();
				$nullDate = $db->getNullDate();

				$query = "SELECT i.*, c.alias as categoryalias FROM #__k2_items as i 
				LEFT JOIN #__k2_categories c ON c.id = i.catid 
				WHERE i.id != {$itemID} 
				AND i.published = 1 
				AND ( i.publish_up = ".$db->Quote($nullDate)." OR i.publish_up <= ".$db->Quote($now)." ) 
				AND ( i.publish_down = ".$db->Quote($nullDate)." OR i.publish_down >= ".$db->Quote($now)." ) ";
				
				if(K2_JVERSION=='16'){
					$query .= " AND i.access IN(".implode(',', $user->authorisedLevels()).") ";
					if($mainframe->getLanguageFilter()) {
						$query.= " AND i.language IN(".$db->Quote(JFactory::getLanguage()->getTag()).", ".$db->Quote('*').")";
					}
				}
				else {
					$query .= " AND i.access <= {$aid} ";
				}
							
				$query .= " AND i.trash = 0 
				AND i.created_by = {$userID} 
				AND i.created_by_alias='' 
				AND c.published = 1 ";
				
				if(K2_JVERSION=='16'){
					$query .= " AND c.access IN(".implode(',', $user->authorisedLevels()).") ";
					if($mainframe->getLanguageFilter()) {
						$query.= " AND c.language IN(".$db->Quote(JFactory::getLanguage()->getTag()).", ".$db->Quote('*').")";
					}
				}
				else {
					$query .= " AND c.access <= {$aid} ";
				}				
				
				$query .= " AND c.trash = 0 
				ORDER BY i.created DESC";

				$db->setQuery($query, 0, $limit);
				$rows = $db->loadObjectList();
				
				foreach($rows as $item) {
					//Image
					$item->imageXSmall = '';
					$item->imageSmall = '';
					$item->imageMedium = '';
					$item->imageLarge = '';
					$item->imageXLarge = '';

					if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_XS.jpg'))
							$item->imageXSmall = JURI::root(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_XS.jpg';

					if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_S.jpg'))
							$item->imageSmall = JURI::root(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_S.jpg';

					if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_M.jpg'))
							$item->imageMedium = JURI::root(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_M.jpg';

					if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_L.jpg'))
							$item->imageLarge = JURI::root(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_L.jpg';

					if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_XL.jpg'))
							$item->imageXLarge = JURI::root(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_XL.jpg';

					if (JFile::exists(JPATH_SITE.DS.'media'.DS.'k2'.DS.'items'.DS.'cache'.DS.md5("Image".$item->id).'_Generic.jpg'))
							$item->imageGeneric = JURI::root(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_Generic.jpg';
				}
				
				
				return $rows;
		}

		function getRelatedItems($itemID, $tags, $params) {

				$mainframe = &JFactory::getApplication();
				$limit = $params->get('itemRelatedLimit', 10);
				$itemID = (int) $itemID;
				foreach ($tags as $tag) {
						$tagIDs[] = $tag->id;
				}
				JArrayHelper::toInteger($tagIDs);
				$sql = implode(',', $tagIDs);

				$user = &JFactory::getUser();
				$aid = (int) $user->get('aid');
				$db = &JFactory::getDBO();

				$jnow = &JFactory::getDate();
				$now = $jnow->toMySQL();
				$nullDate = $db->getNullDate();

				$query = "SELECT DISTINCT itemID FROM #__k2_tags_xref WHERE tagID IN ({$sql}) AND itemID!={$itemID}";
 		$db->setQuery($query);
				$itemsIDs = $db->loadResultArray();

				if(!count($itemsIDs))
					return array();

				$sql = implode(',', $itemsIDs);

				$query = "SELECT i.*, c.alias as categoryalias FROM #__k2_items as i 
				LEFT JOIN #__k2_categories c ON c.id = i.catid 
				WHERE i.published = 1 
				AND ( i.publish_up = ".$db->Quote($nullDate)." OR i.publish_up <= ".$db->Quote($now)." ) 
				AND ( i.publish_down = ".$db->Quote($nullDate)." OR i.publish_down >= ".$db->Quote($now)." ) ";
				
				if(K2_JVERSION=='16'){
					$query .= " AND i.access IN(".implode(',', $user->authorisedLevels()).") ";
					if($mainframe->getLanguageFilter()) {
						$query.= " AND i.language IN(".$db->Quote(JFactory::getLanguage()->getTag()).", ".$db->Quote('*').")";
					}
					
				}
				else {
					$query .= " AND i.access <= {$aid} ";
				}
				
				$query .= " AND i.trash = 0 
				AND c.published = 1 ";
				
				if(K2_JVERSION=='16'){
					$query .= " AND c.access IN(".implode(',', $user->authorisedLevels()).") ";
					if($mainframe->getLanguageFilter()) {
						$query.= " AND c.language IN(".$db->Quote(JFactory::getLanguage()->getTag()).", ".$db->Quote('*').")";
					}
				}
				else {
					$query .= " AND c.access <= {$aid} ";
				}
 						
		$query .= " AND c.trash = 0 
				AND (i.id) IN ({$sql}) 
				ORDER BY i.created DESC";

				$db->setQuery($query, 0, $limit);
				$rows = $db->loadObjectList();
				JModel::addIncludePath(JPATH_COMPONENT.DS.'models');
				$model = &JModel::getInstance('Item', 'K2Model');
				for ($key = 0; $key < sizeof($rows); $key++) {
					$rows[$key] = $model->prepareItem($rows[$key], 'relatedByTag', '');
					$rows[$key] = $model->execPlugins($rows[$key], 'relatedByTag', '');
					K2HelperUtilities::setDefaultImage($rows[$key], 'relatedByTag', $params);
				}
				return $rows;
		}

		function prepareSearch($search) {

			jimport('joomla.filesystem.file');
			$db = &JFactory::getDBO();
			$language = &JFactory::getLanguage();
			$defaultLang = $language->getDefault();
			$currentLang = $language->getTag();
			$length = JString::strlen($search);
			$sql = '';
			
			if(JRequest::getVar('categories')){
				$categories = @explode(',', JRequest::getVar('categories'));
				JArrayHelper::toInteger($categories);
				$sql.= " AND i.catid IN (".@implode(',', $categories).") ";
			}
			
			if(empty($search)) {
				return $sql;
			}

			if (JString::substr($search, 0, 1) == '"' && JString::substr($search, $length - 1, 1) == '"') {
				$type = 'exact';
			}
			else {
				$type='any';
			}

			if (JFile::exists(JPATH_ADMINISTRATOR.DS.'components'.DS.'com_joomfish'.DS.'joomfish.php') && $currentLang != $defaultLang) {

				$conditions = array();
				$search_ignore = array();
				

				$ignoreFile = $language->getLanguagePath().DS.$currentLang.DS.$currentLang.'.ignore.php';

				if (JFile::exists($ignoreFile)) {
					include $ignoreFile;
				}

				if ($type=='exact') {

					$word = JString::substr($search, 1, $length - 2);

					if (JString::strlen($word) > 3 && !in_array($word, $search_ignore)) {
						$word = $db->Quote('%'.$db->getEscaped($word, true).'%', false);


						$jfQuery = " SELECT reference_id FROM #__jf_content as jfc LEFT JOIN #__languages as jfl ON jfc.language_id = jfl.".K2_JF_ID;
						$jfQuery .= " WHERE jfc.reference_table = 'k2_items'";
						$jfQuery .= " AND jfl.code=".$db->Quote($currentLang);
						$jfQuery .= " AND jfc.published=1";
						$jfQuery .= " AND jfc.value LIKE ".$word;
						$jfQuery .= " AND (jfc.reference_field = 'title'
								OR jfc.reference_field = 'introtext'
								OR jfc.reference_field = 'fulltext'
								OR jfc.reference_field = 'image_caption'
								OR jfc.reference_field = 'image_credits'
								OR jfc.reference_field = 'video_caption'
								OR jfc.reference_field = 'video_credits'
								OR jfc.reference_field = 'extra_fields_search'
								OR jfc.reference_field = 'metadesc'
								OR jfc.reference_field = 'metakey'
					)";
						$db->setQuery($jfQuery);
						$result = $db->loadResultArray();
						$result = @array_unique($result);
						JArrayHelper::toInteger($result);
						if (count($result)) {
							$conditions[] = "i.id IN(".implode(',', $result).")";
						}

					}

				} else {
					$search = explode(' ', JString::strtolower($search));
					foreach ($search as $searchword) {

						if (JString::strlen($searchword) > 3 && !in_array($searchword, $search_ignore)) {

							$word = $db->Quote('%'.$db->getEscaped($searchword, true).'%', false);

							$jfQuery = " SELECT reference_id FROM #__jf_content as jfc LEFT JOIN #__languages as jfl ON jfc.language_id = jfl.".K2_JF_ID;
							$jfQuery .= " WHERE jfc.reference_table = 'k2_items'";
							$jfQuery .= " AND jfl.code=".$db->Quote($currentLang);
							$jfQuery .= " AND jfc.published=1";
							$jfQuery .= " AND jfc.value LIKE ".$word;
							$jfQuery .= " AND (jfc.reference_field = 'title'
									OR jfc.reference_field = 'introtext'
									OR jfc.reference_field = 'fulltext'
									OR jfc.reference_field = 'image_caption'
									OR jfc.reference_field = 'image_credits'
									OR jfc.reference_field = 'video_caption'
									OR jfc.reference_field = 'video_credits'
									OR jfc.reference_field = 'extra_fields_search'
									OR jfc.reference_field = 'metadesc'
									OR jfc.reference_field = 'metakey'
						)";
							$db->setQuery($jfQuery);
							$result = $db->loadResultArray();
							$result = @array_unique($result);
							foreach ($result as $id) {
								$allIDs[] = $id;
							}

							if (JFile::exists(JPATH_ADMINISTRATOR.DS.'components'.DS.'com_joomfish'.DS.'joomfish.php') && $currentLang != $defaultLang) {

								if (isset($allIDs) && count($allIDs)) {
									JArrayHelper::toInteger($allIDs);
									$conditions[] = "i.id IN(".implode(',', $allIDs).")";
								}

							}


						}

					}


				}

				if (count($conditions)) {
					$sql .= " AND (".implode(" OR ", $conditions).")";
				}

			}
			else {

				$sql .= " AND MATCH(i.title, i.introtext, i.`fulltext`,i.image_caption,i.image_credits,i.video_caption,i.video_credits,i.extra_fields_search,i.metadesc,i.metakey) ";
				if ($type=='exact') {
					$text = JString::trim($search,'"');
					$text = $db->Quote('"'.$db->getEscaped($text, true).'"', false);
				}
				else {
					$search = JString::str_ireplace('*', '', $search);
					$words = explode(' ', $search);
					for($i=0; $i<count($words); $i++){
						$words[$i].= '*';
					}
					$search = implode(' ', $words);
					$text = $db->Quote($db->getEscaped($search, true), false);
				}
				$sql.= " AGAINST ({$text} IN BOOLEAN MODE)";

			}
			
			return $sql;
		}

		function getModuleItems($moduleID) {

				$db = &JFactory::getDBO();
				$query = "SELECT * FROM #__modules WHERE id={$moduleID} AND published=1 AND client_id=0";
				$db->setQuery($query, 0, 1);
				$module = $db->loadObject();
				$format = JRequest::getWord('format');
				if (is_null($module))
						JError::raiseError(404, JText::_('K2_NOT_FOUND'));
				else {
						$params = new JParameter($module->params);
						switch ($module->module) {

								case 'mod_k2_content':
										require_once (JPATH_SITE.DS.'modules'.DS.'mod_k2_content'.DS.'helper.php');
										$helper = new modK2ContentHelper;
										$items = $helper->getItems($params, $format);
										break;

								case 'mod_k2_comments':
										if($params->get('module_usage')==1)
											JError::raiseError(404, JText::_('K2_NOT_FOUND'));
											
										require_once (JPATH_SITE.DS.'modules'.DS.'mod_k2_comments'.DS.'helper.php');
										$helper = new modK2CommentsHelper;
										$items = $helper->getLatestComments($params);
										
										foreach($items as $item){
											$item->title = $item->userName.' '.JText::_('K2_COMMENTED_ON').' '.$item->title;
											$item->introtext = $item->commentText;
											$item->created=$item->commentDate;
											$item->id = $item->itemID;
										}
										break;

								default:
										JError::raiseError(404, JText::_('K2_NOT_FOUND'));

						}

						$result = new JObject;
						$result->items = $items;
						$result->title = $module->title;
						$result->module = $module->module;
						$result->params = $module->params;
						return $result;

				}

		}

}