<?php

$application =& kApplication::Instance();
$application->Factory->includeClassFile('kDBEventHandler');

class kCatDBEventHandler extends InpDBEventHandler {

	function OnCopy(&$event)
	{
		$object = $event->getObject();
		$this->StoreSelectedIDs($event);
		$ids = $this->getSelectedIDs($event);
		$this->Application->StoreVar($event->getPrefixSpecial().'_clipboard', implode(',', $ids));
		$this->Application->StoreVar($event->getPrefixSpecial().'_clipboard_mode', 'copy');

		$this->Application->StoreVar('ClipBoard', 'COPY-0.'.$object->TableName.'.ResourceId=0');
		$event->redirect_params = Array('opener' => 's', 'pass_events'=>true); //do not go up - STAY
	}

	function OnCut(&$event)
	{
		$object = $event->getObject();
		$this->StoreSelectedIDs($event);
		$ids = $this->getSelectedIDs($event);
		$this->Application->StoreVar($event->getPrefixSpecial().'_clipboard', implode(',', $ids));
		$this->Application->StoreVar($event->getPrefixSpecial().'_clipboard_mode', 'cut');

		$this->Application->StoreVar('ClipBoard', 'CUT-0.'.$object->TableName.'.ResourceId=0');
		$event->redirect_params = Array('opener' => 's', 'pass_events'=>true); //do not go up - STAY
	}

	function OnPaste(&$event)
	{
		$ids = $this->Application->RecallVar($event->getPrefixSpecial().'_clipboard');
		if ($ids == '') {
			$event->redirect = false;
			return;
		}

		//recalling by different name, because we may get kDBList, if we recall just by prefix
		$object =& $this->Application->recallObject($event->getPrefixSpecial().'.item', $event->Prefix);
//		$this->prepareObject($object, $event);

		if ($this->Application->RecallVar($event->getPrefixSpecial().'_clipboard_mode') == 'copy') {
			$ids_arr = explode(',', $ids);

			$temp =& $this->Application->recallObject($event->getPrefixSpecial().'_TempHandler', 'kTempTablesHandler');

			if($ids_arr)
			{
				$temp->CloneItems($event->Prefix, $event->Special, $ids_arr);
			}
		}
		else { // mode == cut
			$ids_arr = explode(',', $ids);
			foreach ($ids_arr as $id) {
				$object->Load($id);
				$object->MoveToCat();
			}
		}
		$event->status = erSUCCESS;
	}

	/**
	 * Occurs when pasting category
	 *
	 * @param kEvent $event
	 */
	function OnCatPaste(&$event)
	{
		$inp_clipboard = $this->Application->RecallVar('ClipBoard');
		$inp_clipboard = explode('-', $inp_clipboard, 2);

		if($inp_clipboard[0] == 'COPY')
		{
			$saved_cat_id = $this->Application->GetVar('m_cat_id');
			$cat_ids = $event->getEventParam('cat_ids');

			$id_field = $this->Application->getUnitOption($event->Prefix, 'IDField');
			$table = $this->Application->getUnitOption($event->Prefix, 'TableName');
			$ids_sql = 'SELECT '.$id_field.' FROM '.$table.' WHERE ResourceId IN (%s)';
			$resource_ids_sql = 'SELECT ItemResourceId FROM '.TABLE_PREFIX.'CategoryItems WHERE CategoryId = %s AND PrimaryCat = 1';


			$this->Application->setUnitOption($event->Prefix,'AutoLoad', false);
			$object =& $this->Application->recallObject($event->Prefix.'.item', $event->Prefix);

			foreach($cat_ids as $source_cat => $dest_cat)
			{
				$item_resource_ids = $this->Conn->GetCol( sprintf($resource_ids_sql, $source_cat) );
				if(!$item_resource_ids) continue;

				$this->Application->SetVar('m_cat_id', $dest_cat);
				$item_ids = $this->Conn->GetCol( sprintf($ids_sql, implode(',', $item_resource_ids) ) );

				$temp =& $this->Application->recallObject($event->getPrefixSpecial().'_TempHandler', 'kTempTablesHandler');
				if($item_ids) $temp->CloneItems($event->Prefix, $event->Special, $item_ids);
			}
			$this->Application->setUnitOption($event->Prefix,'AutoLoad', true);
			$this->Application->SetVar('m_cat_id', $saved_cat_id);
		}
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function OnPreSaveAndOpenTranslator(&$event)
	{
		$this->Application->SetVar('allow_translation', true);
		$object =& $event->getObject();
		$this->RemoveRequiredFields($object);
		$event->CallSubEvent('OnPreSave');
		if ($event->status == erSUCCESS) {
//				$url = $this->Application->HREF($t, '', Array('pass'=>'all', $event->getPrefixSpecial(true).'_id' => $object->GetId()));
//				$field = $this->Application->GetVar('translator_field');
			$cf_id = $this->Application->GetVar('translator_cf_id');
			if($cf_id)
			{
				$cv =& $this->Application->recallObject('cv.-item', null, Array('skip_autoload' => true) );
				$load_params = Array('CustomFieldId' => $cf_id, 'ResourceId'=> $object->GetDBField('ResourceId') );
				if( !$cv->Load($load_params) )
				{
					$cv->SetFieldsFromHash($load_params);
					$cv->Create();
				}
				$this->Application->SetVar('cv_id', $cv->getID() );
			}

			$event->redirect = $this->Application->GetVar('translator_t');
			$event->redirect_params = Array('pass'=>'all,trans,'.$this->Application->GetVar('translator_prefixes'),
						$event->getPrefixSpecial(true).'_id' => $object->GetId(),
						'trans_event'=>'OnLoad',
						'trans_prefix'=> $this->Application->GetVar('translator_prefixes'),
						'trans_field'=>$this->Application->GetVar('translator_field'),
						'trans_multi_line'=>$this->Application->GetVar('translator_multi_line'),
						);

			// 1. SAVE LAST TEMPLATE TO SESSION
			$last_template = $this->Application->RecallVar('last_template');
			preg_match('/index4\.php\|'.$this->Application->GetSID().'-(.*):/U', $last_template, $rets);
//			$this->Application->StoreVar('return_template', $rets[1]);
			$this->Application->StoreVar('return_template', $this->Application->GetVar('t'));

			//$after_script = "openTranslator('".$event->getPrefixSpecial()."', '".$field."', '".$url."', '".$wnd_name."')";
		}

//			$this->Application->SetVar('after_script', $after_script);
//			$event->redirect = false;
	}

	/**
	 * Return type clauses for list bulding on front
	 *
	 * @param kEvent $event
	 * @return Array
	 */
	function getTypeClauses(&$event)
	{
		$types = $event->getEventParam('types');
		$except_types = $event->getEventParam('except');
		$type_clauses = Array();

		$type_clauses['pick']['include'] = '%1$s.EditorsPick = 1 AND '.TABLE_PREFIX.'CategoryItems.PrimaryCat = 1';
		$type_clauses['pick']['except'] = '%1$s.EditorsPick! = 1 AND '.TABLE_PREFIX.'CategoryItems.PrimaryCat = 1';
		$type_clauses['pick']['having_filter'] = false;

		$type_clauses['hot']['include'] = '`IsHot` = 1 AND PrimaryCat = 1';
		$type_clauses['hot']['except'] = '`IsHot`! = 1 AND PrimaryCat = 1';
		$type_clauses['hot']['having_filter'] = true;

		$type_clauses['pop']['include'] = '`IsPop` = 1 AND PrimaryCat = 1';
		$type_clauses['pop']['except'] = '`IsPop`! = 1 AND PrimaryCat = 1';
		$type_clauses['pop']['having_filter'] = true;

		$type_clauses['new']['include'] = '`IsNew` = 1 AND PrimaryCat = 1';
		$type_clauses['new']['except'] = '`IsNew`! = 1 AND PrimaryCat = 1';
		$type_clauses['new']['having_filter'] = true;

		$type_clauses['displayed']['include'] = '';
		$displayed = $this->Application->GetVar($event->Prefix.'_displayed_ids');
		if ($displayed) {
			$id_field = $this->Application->getUnitOption($event->Prefix, 'IDField');
			$type_clauses['displayed']['except'] = '%1$s.'.$id_field.' NOT IN ('.$displayed.')';
		}
		else {
			$type_clauses['displayed']['except'] = '';
		}
		$type_clauses['displayed']['having_filter'] = false;

		if (strpos($types, 'search') !== false || strpos($except_types, 'search') !== false) {
			$event_mapping = Array(
									'simple'		=>	'OnSimpleSearch',
									'subsearch'		=>	'OnSubSearch',
									'advanced'		=>	'OnAdvancedSearch');
			if($this->Application->GetVar('INPORTAL_ON') && $this->Application->GetVar('Action') == 'm_simple_subsearch')
			{
				$type = 'subsearch';
			}
			else
			{
				$type = $this->Application->GetVar('search_type') ? $this->Application->GetVar('search_type') : 'simple';
			}

			if($keywords = $event->getEventParam('keyword_string')) // processing keyword_string param of ListProducts tag
			{
				$this->Application->SetVar('keywords', $keywords);
				$type = 'simple';
			}
			$search_event = $event_mapping[$type];
			$this->$search_event($event);
			$search_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';
			$sql = 'SHOW TABLES LIKE "'.$search_table.'"';
			if ( $this->Conn->Query($sql) ) {
				$search_res_ids = $this->Conn->GetCol('SELECT ResourceId FROM '.$search_table);
			}

			if ($search_res_ids) {
				$type_clauses['search']['include'] = '%1$s.ResourceId IN ('.implode(',', $search_res_ids).') AND PrimaryCat = 1';
				$type_clauses['search']['except'] = '%1$s.ResourceId NOT IN ('.implode(',', $search_res_ids).') AND PrimaryCat = 1';
			}
			else {
				$type_clauses['search']['include'] = '0';
				$type_clauses['search']['except'] = '1';
			}
			$type_clauses['search']['having_filter'] = false;
		}

		if (strpos($types, 'related') !== false || strpos($except_types, 'related') !== false) {

			$related_to = $event->getEventParam('related_to');
			if (!$related_to) {
				$related_prefix = $event->Prefix;
			}
			else {
				$sql = 'SELECT Prefix
						FROM '.TABLE_PREFIX.'ItemTypes
						WHERE ItemName = '.$this->Conn->qstr($related_to);
				$related_prefix = $this->Conn->GetOne($sql);
			}

			$rel_table = $this->Application->getUnitOption('rel', 'TableName');
			$item_type = $this->Application->getUnitOption($event->Prefix, 'ItemType');

			$p_item =& $this->Application->recallObject($related_prefix.'.current', null, Array('skip_autoload' => true));
			$p_item->Load( $this->Application->GetVar($related_prefix.'_id') );

			$p_resource_id = $p_item->GetDBField('ResourceId');

			$sql = 'SELECT SourceId, TargetId FROM '.$rel_table.'
					WHERE
						(Enabled = 1)
						AND (
								(Type = 0 AND SourceId = '.$p_resource_id.' AND TargetType = '.$item_type.')
								OR
								(Type = 1
									AND (
											(SourceId = '.$p_resource_id.' AND TargetType = '.$item_type.')
											OR
											(TargetId = '.$p_resource_id.' AND SourceType = '.$item_type.')
										)
								)
						)';

			$related_ids_array = $this->Conn->Query($sql);
			$related_ids = Array();

			foreach ($related_ids_array as $key => $record) {
				$related_ids[] = $record[ $record['SourceId'] == $p_resource_id ? 'TargetId' : 'SourceId' ];
			}

			if (count($related_ids) > 0) {
				$type_clauses['related']['include'] = '%1$s.ResourceId IN ('.implode(',', $related_ids).') AND PrimaryCat = 1';
				$type_clauses['related']['except'] = '%1$s.ResourceId NOT IN ('.implode(',', $related_ids).') AND PrimaryCat = 1';
			}
			else {
				$type_clauses['related']['include'] = '0';
				$type_clauses['related']['except'] = '1';
			}
			$type_clauses['related']['having_filter'] = false;
		}

		return $type_clauses;
	}

	/**
	 * Apply filters to list
	 *
	 * @param kEvent $event
	 */
	function SetCustomQuery(&$event)
	{
		parent::SetCustomQuery($event);

		$object =& $event->getObject();

		// add category filter if needed
		if ($event->Special != 'showall') {
			if ( $event->getEventParam('parent_cat_id') ) {
				$parent_cat_id = $event->getEventParam('parent_cat_id');
			}
			else {
				$parent_cat_id = $this->Application->GetVar('c_id');
				if (!$parent_cat_id) {
					$parent_cat_id = $this->Application->GetVar('m_cat_id');
				}
				if (!$parent_cat_id) {
					$parent_cat_id = 0;
				}
			}

			if ((string) $parent_cat_id != 'any') {
				if ($event->getEventParam('recursive')) {
					$current_path = $this->Conn->GetOne('SELECT ParentPath FROM '.TABLE_PREFIX.'Category WHERE CategoryId='.$parent_cat_id);
					$subcats = $this->Conn->GetCol('SELECT CategoryId FROM '.TABLE_PREFIX.'Category WHERE ParentPath LIKE "'.$current_path.'%" ');
					$object->addFilter('category_filter', TABLE_PREFIX.'CategoryItems.CategoryId IN ('.implode(', ', $subcats).')');
				}
				else {
					$object->addFilter('category_filter', TABLE_PREFIX.'CategoryItems.CategoryId = '.$parent_cat_id );
				}
			}
		}
		else {
			$object->addFilter('primary_filter', 'PrimaryCat = 1');
		}

		// add permission filter
		$view_perm = 1;
		$object->addFilter('perm_filter', 'perm.PermId = '.$view_perm);

		if ( !$this->Application->IsAdmin() )
		{
			$groups = explode( ',', $this->Application->RecallVar('UserGroups') );
			foreach($groups as $group)
			{
				$view_filters[] = 'FIND_IN_SET('.$group.', perm.acl) || ((NOT FIND_IN_SET('.$group.',perm.dacl)) AND perm.acl=\'\')';
			}
			$view_filter = implode(' OR ', $view_filters);
			$object->addFilter('perm_filter2', $view_filter);
			$object->addFilter('status_filter', $object->TableName.'.Status = 1');
		}

		$types = $event->getEventParam('types');
		$except_types = $event->getEventParam('except');
		$type_clauses = $this->getTypeClauses($event);

		// convert prepared type clauses into list filters
		$includes_or_filter =& $this->Application->makeClass('kMultipleFilter');
		$includes_or_filter->setType(FLT_TYPE_OR);

		$excepts_and_filter =& $this->Application->makeClass('kMultipleFilter');
		$excepts_and_filter->setType(FLT_TYPE_AND);

		$includes_or_filter_h =& $this->Application->makeClass('kMultipleFilter');
		$includes_or_filter_h->setType(FLT_TYPE_OR);

		$excepts_and_filter_h =& $this->Application->makeClass('kMultipleFilter');
		$excepts_and_filter_h->setType(FLT_TYPE_AND);

		$except_types_array = explode(',', $types);

		if ($types) {
			$types_array = explode(',', $types);
			for ($i = 0; $i < sizeof($types_array); $i++) {
				$type = trim($types_array[$i]);
				if (isset($type_clauses[$type])) {
					if ($type_clauses[$type]['having_filter']) {
						$includes_or_filter_h->removeFilter('filter_'.$type);
						$includes_or_filter_h->addFilter('filter_'.$type, $type_clauses[$type]['include']);
					}else {
						$includes_or_filter->removeFilter('filter_'.$type);
						$includes_or_filter->addFilter('filter_'.$type, $type_clauses[$type]['include']);
					}
				}
			}
		}

		if ($except_types) {
			$except_types_array = explode(',', $except_types);
			for ($i = 0; $i < sizeof($except_types_array); $i++) {
				$type = trim($except_types_array[$i]);
				if (isset($type_clauses[$type])) {
					if ($type_clauses[$type]['having_filter']) {
						$excepts_and_filter_h->removeFilter('filter_'.$type);
						$excepts_and_filter_h->addFilter('filter_'.$type, $type_clauses[$type]['except']);
					}else {
						$excepts_and_filter->removeFilter('filter_'.$type);
						$excepts_and_filter->addFilter('filter_'.$type, $type_clauses[$type]['except']);
					}
				}
			}
		}

		/*if ( !$this->Application->IsAdmin() ) {
			$object->addFilter('expire_filter', '%1$s.Expire IS NULL OR %1$s.Expire > UNIX_TIMESTAMP()');
		}*/

		/*$list_type = $event->getEventParam('ListType');
		switch($list_type)
		{
			case 'favorites':
				$fav_table = $this->Application->getUnitOption('fav','TableName');
				$user_id =& $this->Application->GetVar('u_id');

				$sql = 'SELECT DISTINCT f.ResourceId
						FROM '.$fav_table.' f
						LEFT JOIN '.$object->TableName.' p ON p.ResourceId = f.ResourceId
						WHERE f.PortalUserId = '.$user_id;
				$ids = $this->Conn->GetCol($sql);
				if(!$ids) $ids = Array(-1);
				$object->addFilter('category_filter', TABLE_PREFIX.'CategoryItems.PrimaryCat = 1');
				$object->addFilter('favorites_filter', '%1$s.`ResourceId` IN ('.implode(',',$ids).')');
				break;
			case 'search':
				$search_results_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';
				$sql = '	SELECT DISTINCT ResourceId
							FROM '.$search_results_table.'
							WHERE ItemType=11';
				$ids = $this->Conn->GetCol($sql);
				if(!$ids) $ids = Array(-1);
				$object->addFilter('search_filter', '%1$s.`ResourceId` IN ('.implode(',',$ids).')');
				break;
		}		*/

		$object->addFilter('includes_filter', $includes_or_filter);
		$object->addFilter('excepts_filter', $excepts_and_filter);

		$object->addFilter('includes_filter_h', $includes_or_filter_h, HAVING_FILTER);
		$object->addFilter('excepts_filter_h', $excepts_and_filter_h, HAVING_FILTER);
	}

	/**
	 * Adds calculates fields for item statuses
	 *
	 * @param kCatDBItem $object
	 * @param kEvent $event
	 */
	function prepareObject(&$object, &$event)
	{
		$this->prepareItemStatuses($event);

		if ($event->Special == 'export' || $event->Special == 'import')
		{
			$this->prepareExportColumns($event);
		}
	}

	/**
	 * Creates calculated fields for all item statuses based on config settings
	 *
	 * @param kEvent $event
	 */
	function prepareItemStatuses(&$event)
	{
		$object =& $event->getObject( Array('skip_autoload' => true) );

		$property_mappings = $this->Application->getUnitOption($event->Prefix, 'ItemPropertyMappings');

		$new_days_var = getArrayValue($property_mappings, 'NewDays');
		if($new_days_var)
		{
			$object->addCalculatedField('IsNew', '	IF(%1$s.NewItem = 2,
														IF(%1$s.CreatedOn >= (UNIX_TIMESTAMP() - '.
															$this->Application->ConfigValue($new_days_var).
															'*3600*24), 1, 0),
														%1$s.NewItem
													)');
		}

		$hot_limit_var = getArrayValue($property_mappings, 'HotLimit');
		if($hot_limit_var)
		{
			$sql = 'SELECT Data FROM '.TABLE_PREFIX.'Cache WHERE VarName = "'.$hot_limit_var.'"';
			$hot_limit = $this->Conn->GetOne($sql);
			if($hot_limit === false) $hot_limit = $this->CalculateHotLimit($event);
			$object->addCalculatedField('IsHot', '	IF(%1$s.HotItem = 2,
														IF(%1$s.Hits >= '.$hot_limit.', 1, 0),
														%1$s.HotItem
													)');
		}

		$votes2pop_var = getArrayValue($property_mappings, 'VotesToPop');
		$rating2pop_var = getArrayValue($property_mappings, 'RatingToPop');

		if($votes2pop_var && $rating2pop_var)
		{
			$object->addCalculatedField('IsPop', '	IF(%1$s.PopItem = 2,
														IF(%1$s.CachedVotesQty >= '.
															$this->Application->ConfigValue($votes2pop_var).
															' AND %1$s.CachedRating >= '.
															$this->Application->ConfigValue($rating2pop_var).
															', 1, 0),
														%1$s.PopItem)');
		}
	}

	function CalculateHotLimit(&$event)
	{
		$property_mappings = $this->Application->getUnitOption($event->Prefix, 'ItemPropertyMappings');
		$hot_count_var = getArrayValue($property_mappings, 'HotCount');
		$hot_limit_var = getArrayValue($property_mappings, 'HotLimit');

		if($hot_count_var && $hot_limit_var)
		{
			$last_hot = $this->Application->ConfigValue($hot_count_var) - 1;
			$sql = 'SELECT Hits FROM '.$this->Application->getUnitOption($event->Prefix, 'TableName').'
					ORDER BY Hits DESC
					LIMIT '.$last_hot.', 1';
			$res = $this->Conn->GetCol($sql);
			$hot_limit = (double)array_shift($res);
			$this->Conn->Query('REPLACE INTO '.TABLE_PREFIX.'Cache VALUES ("'.$hot_limit_var.'", "'.$hot_limit.'", '.adodb_mktime().')');
			return $hot_limit;
		}
		return 0;
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function OnBeforeItemUpdate(&$event)
	{
		$object =& $event->getObject();
		if( $this->Application->IsAdmin() && ($this->Application->GetVar('Hits_original') !== false) &&
			floor($this->Application->GetVar('Hits_original')) != $object->GetDBField('Hits') )
		{
			$sql = 'SELECT MAX(Hits) FROM '.$this->Application->getUnitOption($event->Prefix, 'TableName').'
					WHERE FLOOR(Hits) = '.$object->GetDBField('Hits');
			$hits = ( $res = $this->Conn->GetOne($sql) ) ? $res + 0.000001 : $object->GetDBField('Hits');
			$object->SetDBField('Hits', $hits);
		}
	}

	/**
	 * Load price from temp table if product mode is temp table
	 *
	 * @param kEvent $event
	 */
	function OnAfterItemLoad(&$event)
	{
		$special = substr($event->Special, -6);
		if ($special == 'import' || $special == 'export') {
			$object =& $event->getObject();
			$image_data = $object->getPrimaryImageData();

			if ($image_data) {
				$thumbnail_image = $image_data[$image_data['LocalThumb'] ? 'ThumbPath' : 'ThumbUrl'];
				if ($image_data['SameImages']) {
					$full_image = '';
				}
				else {
					$full_image = $image_data[$image_data['LocalImage'] ? 'LocalPath' : 'Url'];
				}
				$object->SetDBField('ThumbnailImage', $thumbnail_image);
				$object->SetDBField('FullImage', $full_image);
				$object->SetDBField('ImageAlt', $image_data['AltName']);
			}
		}

	}

	function OnAfterItemUpdate(&$event)
	{
		$this->CalculateHotLimit($event);

		if ( substr($event->Special, -6) == 'import') {
			$this->setCustomExportColumns($event);
		}
	}

	/**
	 * sets values for import process
	 *
	 * @param kEvent $event
	 */
	function OnAfterItemCreate(&$event)
	{
		if ( substr($event->Special, -6) == 'import') {
			$this->setCustomExportColumns($event);
		}
	}

	/**
	 * Makes simple search for products
	 * based on keywords string
	 *
	 * @param kEvent $event
	 * @todo Change all hardcoded Products table & In-Commerce module usage to dynamic usage from item config !!!
	 */
	function OnSimpleSearch(&$event)
	{
		if($this->Application->GetVar('INPORTAL_ON') && !($this->Application->GetVar('Action') == 'm_simple_search'))
		{
			return;
		}

		$event->redirect = false;
		$search_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';

		$keywords = trim($this->Application->GetVar('keywords'));
		$keywords_arr = explode(' ', $keywords);
		if(count($keywords_arr) > 1 && strpos($keywords, '"') === false
			&& strpos($keywords, '+') === false && strpos($keywords, '-') === false)
		{
			foreach($keywords_arr as $key => $value)
			{
				$keywords_arr[$key] = '+'.$value;
			}
			$keywords = implode(' ', $keywords_arr);
		}
		if( !$this->Application->GetVar('INPORTAL_ON') )
		{
			$keywords = unhtmlentities($keywords);
		}

		$query_object =& $this->Application->recallObject('HTTPQuery');
		$sql = 'SHOW TABLES LIKE "'.$search_table.'"';

		if(!isset($query_object->Get['keywords']) &&
			!isset($query_object->Post['keywords']) &&
			$this->Conn->Query($sql))
		{
			return; // used when navigating by pages or changing sorting in search results
		}
		if(!$keywords || strlen($keywords) < $this->Application->ConfigValue('Search_MinKeyword_Length'))
		{
			$this->Conn->Query('DROP TABLE IF EXISTS '.$search_table);
			$this->Application->SetVar('keywords_too_short', 1);
			return; // if no or too short keyword entered, doing nothing
		}

		$this->Application->StoreVar('keywords', $keywords);

		$keywords = strtr($keywords, Array('%' => '\\%', '_' => '\\_'));

		$event->setPseudoClass('_List');
		$object =& $event->getObject();
		$this->Application->SetVar($event->getPrefixSpecial().'_Page', 1);
		$lang = $this->Application->GetVar('m_lang');
		$product_table = $this->Application->getUnitOption('p', 'TableName');

		$sql = '	SELECT * FROM '.$this->Application->getUnitOption('confs', 'TableName').'
					WHERE ModuleName="In-Commerce"
					AND SimpleSearch=1';
		$search_config = $this->Conn->Query($sql, 'FieldName');
		$field_list = array_keys($search_config);

		$join_clauses = Array();

		// field processing
		$weight_sum = 0;
		foreach($field_list as $key => $field)
		{
			$options = $object->getFieldOptions($field);
			$local_table = TABLE_PREFIX.$search_config[$field]['TableName'];
			$weight_sum += $search_config[$field]['Priority']; // counting weight sum; used when making relevance clause

			// processing multilingual fields
			if($options['formatter'] == 'kMultiLanguage')
			{
				$field_list[$key] = 'l'.$lang.'_'.$field;
			}

			// processing fields from other tables
			if($foreign_field = $search_config[$field]['ForeignField'])
			{
				$exploded = explode(':', $foreign_field, 2);
				if($exploded[0] == 'CALC')
				{
					unset($field_list[$key]);
					continue;	// ignoring having type clauses in simple search
					/*$user_object =& $this->Application->recallObject('u');
					$user_groups = 	$user_object->GetDBField('PortalUserId') ?
									implode(',', $this->Conn->GetCol('	SELECT GroupId
													FROM '.TABLE_PREFIX.'UserGroup
													WHERE PortalUserId='.$user_object->GetDBField('PortalUserId'))) : 0;
					$having_list[$key] = str_replace('{PREFIX}', TABLE_PREFIX, $exploded[1]);
					$join_clause = str_replace('{PREFIX}', TABLE_PREFIX, $search_config[$field]['JoinClause']);
					$join_clause = str_replace('{USER_GROUPS}', $user_groups, $join_clause);
					$join_clause = ' LEFT JOIN '.$join_clause;
					$join_clauses[] = $join_clause;*/
				}
				else
				{
					$exploded = explode('.', $foreign_field);
					$foreign_table = TABLE_PREFIX.$exploded[0];

					if($search_config[$field]['CustomFieldId']) {
						$exploded[1] = 'l'.$lang.'_'.$exploded[1];
					}

					$alias_counter++;
					$alias = 't'.$alias_counter;

					$field_list[$key] = $alias.'.'.$exploded[1];
					$join_clause = str_replace('{ForeignTable}', $alias, $search_config[$field]['JoinClause']);
					$join_clause = str_replace('{LocalTable}', $product_table, $join_clause);
					if($search_config[$field]['CustomFieldId'])
					{
						$join_clause .= ' AND '.$alias.'.CustomFieldId='.$search_config[$field]['CustomFieldId'];
					}
					$join_clauses[] = '	LEFT JOIN '.$foreign_table.' '.$alias.'
										ON '.$join_clause;
				}
			}
			else
			{
				// processing fields from local table
				$field_list[$key] = $local_table.'.'.$field_list[$key];
			}
		}

		// keyword string processing
		$normal_keywords = Array();
		$plus_keywords = Array();
		$minus_keywords = Array();

		for($i = 0; $i < strlen($keywords); $i++)
		{
			if(substr($keywords, $i, 1) == ' ') continue;
			$extra_skip = 0;
			switch(substr($keywords, $i, 1))
			{
				case '+':
					if(substr($keywords, $i + 1, 1) ==  '"')
					{
						$keyword_start = $i + 2;
						$keyword_end = strpos($keywords, '"', $i + 2);
						$extra_skip = 2;
					}
					else
					{
						$keyword_start = $i + 1;
						$keyword_end = strpos($keywords, ' ', $i + 1);
						$extra_skip = 0;
					}
					$target_array =& $plus_keywords;
					break;
				case '-':
					if(substr($keywords, $i + 1, 1) ==  '"')
					{
						$keyword_start = $i + 2;
						$keyword_end = strpos($keywords, '"', $i + 2);
						$extra_skip = 2;
					}
					else
					{
						$keyword_start = $i + 1;
						$keyword_end = strpos($keywords, ' ', $i + 1);
						$extra_skip = 0;
					}
					$target_array =& $minus_keywords;
					break;
				case '"':
					$keyword_start = $i + 1;
					$keyword_end = strpos($keywords, '"', $i + 1);
					$extra_skip = 1;
					$target_array =& $normal_keywords;
					break;
				default:
					$keyword_start = $i;
					$keyword_end = strpos($keywords, ' ', $i + 1);
					$target_array =& $normal_keywords;
			}

			if($keyword_end === false)
			{
				$keyword_end = strlen($keywords);
			}
			$keyword_length = $keyword_end - $keyword_start;
			$keyword = substr($keywords, $keyword_start, $keyword_length);

			if(strlen($keyword) >= $this->Application->ConfigValue('Search_MinKeyword_Length'))
			{
				$target_array[] = addcslashes($keyword, '"');
			}

			$i += $keyword_length + $extra_skip;
		}

		// preparing conditions
		$normal_conditions = Array();
		$plus_conditions = Array();
		$minus_conditions = Array();
		foreach($normal_keywords as $keyword)
		{
			$normal_conditions[] = implode(' LIKE "%'.$keyword.'%" OR ', $field_list).' LIKE "%'.$keyword.'%"';
		}
		foreach($plus_keywords as $keyword)
		{
			$plus_conditions[] = implode(' LIKE "%'.$keyword.'%" OR ', $field_list).' LIKE "%'.$keyword.'%"';
		}
		foreach($minus_keywords as $keyword)
		{
			foreach($field_list as $field)
			{
				$condition[] = $field.' NOT LIKE "%'.$keyword.'%" OR '.$field.' IS NULL';
			}
			$minus_conditions[] = '('.implode(') AND (', $condition).')';
		}

		// building where clause
		if($normal_conditions)
		{
			$where_clause = '('.implode(') OR (', $normal_conditions).')';
		}
		else
		{
			$where_clause = '1';
		}
		if($plus_conditions)
		{
			$where_clause = '('.$where_clause.') AND ('.implode(') AND (', $plus_conditions).')';
		}
		if($minus_conditions)
		{
			$where_clause = '('.$where_clause.') AND ('.implode(') AND (', $minus_conditions).')';
		}
		$where_clause = $where_clause.' AND '.$product_table.'.Status=1';

		if($this->Application->GetVar('Action') == 'm_simple_subsearch') // subsearch, In-portal
		{
			if( $event->getEventParam('ResultIds') )
			{
				$where_clause .= ' AND '.$product_table.'.ResourceId IN ('.implode(',', $event->specificParams['ResultIds']).')';
			}
		}
		if( $event->MasterEvent && $event->MasterEvent->Name == 'OnListBuild' ) // subsearch, k4
		{
			if( $event->MasterEvent->getEventParam('ResultIds') )
			{
				$where_clause .= ' AND '.$product_table.'.ResourceId IN ('.implode(',', $event->MasterEvent->getEventParam('ResultIds')).')';
			}
		}

		// building having clause


		// making relevance clause
		$positive_words = array_merge($normal_keywords, $plus_keywords);
		$this->Application->StoreVar('highlight_keywords', serialize($positive_words));
		$revelance_parts = Array();
		reset($search_config);
		foreach($field_list as $field)
		{
			$config_elem = each($search_config);
			$weight = $search_config[$field]['Priority'];
			$revelance_parts[] = 'IF('.$field.' LIKE "%'.implode(' ', $positive_words).'%", '.$weight_sum.', 0)';
			foreach($positive_words as $keyword)
			{
				$revelance_parts[] = 'IF('.$field.' LIKE "%'.$keyword.'%", '.$config_elem['value']['Priority'].', 0)';
			}
		}
		$rel_keywords	= $this->Application->ConfigValue('SearchRel_DefaultKeyword_products')	/ 100;
		$rel_pop		= $this->Application->ConfigValue('SearchRel_DefaultPop_products')		/ 100;
		$rel_rating		= $this->Application->ConfigValue('SearchRel_DefaultRating_products')	/ 100;
		$relevance_clause = '('.implode(' + ', $revelance_parts).') / '.$weight_sum.' * '.$rel_keywords;
		$relevance_clause .= ' + (Hits + 1) / (MAX(Hits) + 1) * '.$rel_pop;
		$relevance_clause .= ' + (CachedRating + 1) / (MAX(CachedRating) + 1) * '.$rel_rating;

		// building final search query
		if( !$this->Application->GetVar('INPORTAL_ON') )
		{
			$this->Conn->Query('DROP TABLE IF EXISTS '.$search_table); // erase old search table if clean k4 event
		}

		if($this->Conn->Query('SHOW TABLES LIKE "'.$search_table.'"'))
		{
			$select_intro = 'INSERT INTO '.$search_table.' (Relevance, ItemId, ResourceId, ItemType, EdPick) ';
		}
		else
		{
			$select_intro = 'CREATE TABLE '.$search_table.' AS ';
		}

		$sql = $select_intro.' SELECT '.$relevance_clause.' AS Relevance,
							'.$product_table.'.ProductId AS ItemId,
							'.$product_table.'.ResourceId,
							11 AS ItemType,
							'.$product_table.'.EditorsPick AS EdPick
					FROM '.$object->TableName.'
					'.implode(' ', $join_clauses).'
					WHERE '.$where_clause.'
					GROUP BY '.$product_table.'.ProductId';

		$res = $this->Conn->Query($sql);
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function OnSubSearch(&$event)
	{
		$search_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';
		$sql = 'SHOW TABLES LIKE "'.$search_table.'"';
		if($this->Conn->Query($sql))
		{
			$sql = 'SELECT DISTINCT ResourceId FROM '.$search_table;
			$ids = $this->Conn->GetCol($sql);
		}
		$event->setEventParam('ResultIds', $ids);
		$event->CallSubEvent('OnSimpleSearch');
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 * @todo Change all hardcoded Products table & In-Commerce module usage to dynamic usage from item config !!!
	 */
	function OnAdvancedSearch(&$event)
	{
		$query_object =& $this->Application->recallObject('HTTPQuery');
		if(!isset($query_object->Post['andor']))
		{
			return; // used when navigating by pages or changing sorting in search results
		}

		$this->Application->RemoveVar('keywords');
		$this->Application->RemoveVar('Search_Keywords');

		$sql = '	SELECT * FROM '.$this->Application->getUnitOption('confs', 'TableName').'
					WHERE ModuleName="In-Commerce"
					AND AdvancedSearch=1';
		$search_config = $this->Conn->Query($sql);
		$lang = $this->Application->GetVar('m_lang');
		$object =& $event->getObject();
		$object->SetPage(1);
		$user_object =& $this->Application->recallObject('u');
		$product_table = $this->Application->getUnitOption('p', 'TableName');

		$keywords = $this->Application->GetVar('value');
		$verbs = $this->Application->GetVar('verb');
		$glues = $this->Application->GetVar('andor');

		$and_conditions = Array();
		$or_conditions = Array();
		$and_having_conditions = Array();
		$or_having_conditions = Array();
		$join_clauses = Array();
		$highlight_keywords = Array();
		$relevance_parts = Array();

		$condition_patterns = Array(	'any'			=> '%s LIKE %s',
										'contains'		=> '%s LIKE %s',
										'notcontains'	=> '(NOT (%1$s LIKE %2$s) OR %1$s IS NULL)',
										'is'			=> '%s = %s',
										'isnot'			=> '(%1$s != %2$s OR %1$s IS NULL)');

		$alias_counter = 0;
		$weight_sum = 0;
		// processing fields and preparing conditions
		foreach($search_config as $record)
		{
			$field = $record['FieldName'];
			$join_clause = '';
			$condition_mode = 'WHERE';

			// field processing

			$options = $object->getFieldOptions($field);
			$local_table = TABLE_PREFIX.$record['TableName'];
			$weight_sum += $record['Priority']; // counting weight sum; used when making relevance clause

			// processing multilingual fields
			if($options['formatter'] == 'kMultiLanguage')
			{
				$field_name = 'l'.$lang.'_'.$field;
			}
			else
			{
				$field_name = $field;
			}

			// processing fields from other tables
			if($foreign_field = $record['ForeignField'])
			{
				$exploded = explode(':', $foreign_field, 2);
				if($exploded[0] == 'CALC')
				{
					$user_groups = 	$user_object->GetDBField('PortalUserId') ?
									implode(',', $this->Conn->GetCol('	SELECT GroupId
													FROM '.TABLE_PREFIX.'UserGroup
													WHERE PortalUserId='.$user_object->GetDBField('PortalUserId'))) : 0;
					$field_name = str_replace('{PREFIX}', TABLE_PREFIX, $exploded[1]);
					$join_clause = str_replace('{PREFIX}', TABLE_PREFIX, $record['JoinClause']);
					$join_clause = str_replace('{USER_GROUPS}', $user_groups, $join_clause);
					$join_clause = ' LEFT JOIN '.$join_clause;

					$condition_mode = 'HAVING';
				}
				else
				{
					$exploded = explode('.', $foreign_field);
					$foreign_table = TABLE_PREFIX.$exploded[0];

					if($record['CustomFieldId']) {
						$exploded[1] = 'l'.$lang.'_'.$exploded[1];
					}

					$alias_counter++;
					$alias = 't'.$alias_counter;

					$field_name = $alias.'.'.$exploded[1];
					$join_clause = str_replace('{ForeignTable}', $alias, $record['JoinClause']);
					$join_clause = str_replace('{LocalTable}', $product_table, $join_clause);

					if($record['CustomFieldId'])
					{
						$join_clause .= ' AND '.$alias.'.CustomFieldId='.$record['CustomFieldId'];
					}
					$join_clause = '	LEFT JOIN '.$foreign_table.' '.$alias.'
										ON '.$join_clause;
				}
			}
			else
			{
				// processing fields from local table
				$field_name = $local_table.'.'.$field_name;
			}

			$condition = '';
			switch($record['FieldType'])
			{
				case 'text':
					if( !$this->Application->GetVar('INPORTAL_ON') )
					{
						$keywords[$field] = unhtmlentities( $keywords[$field] );
					}

					if(strlen($keywords[$field]) >= $this->Application->ConfigValue('Search_MinKeyword_Length'))
					{
						$highlight_keywords[] = $keywords[$field];
						if( in_array($verbs[$field], Array('any', 'contains', 'notcontains')) )
						{
							$keywords[$field] = '%'.strtr($keywords[$field], Array('%' => '\\%', '_' => '\\_')).'%';
						}
						$condition = sprintf(	$condition_patterns[$verbs[$field]],
												$field_name,
												$this->Conn->qstr( $keywords[$field] ));
					}
				break;
				case 'boolean':
					if($keywords[$field] != -1)
					{
						$property_mappings = $this->Application->getUnitOption($event->Prefix, 'ItemPropertyMappings');
						switch($field)
						{
							case 'HotItem':
								$hot_limit_var = getArrayValue($property_mappings, 'HotLimit');
								if($hot_limit_var)
								{
									$sql = 'SELECT Data FROM '.TABLE_PREFIX.'Cache WHERE VarName="'.$hot_limit_var.'"';
									$hot_limit = (int)$this->Conn->GetOne($sql);
									$condition = 	'IF('.$product_table.'.HotItem = 2,
													IF('.$product_table.'.Hits >= '.
													$hot_limit.
													', 1, 0), '.$product_table.'.HotItem) = '.$keywords[$field];
								}
							break;
							case 'PopItem':
								$votes2pop_var = getArrayValue($property_mappings, 'VotesToPop');
								$rating2pop_var = getArrayValue($property_mappings, 'RatingToPop');
								if($votes2pop_var && $rating2pop_var)
								{
									$condition = 'IF('.$product_table.'.PopItem = 2, IF('.$product_table.'.CachedVotesQty >= '.
													$this->Application->ConfigValue($votes2pop_var).
													' AND '.$product_table.'.CachedRating >= '.
													$this->Application->ConfigValue($rating2pop_var).
													', 1, 0), '.$product_table.'.PopItem) = '.$keywords[$field];
								}
							break;
							case 'NewItem':
								$new_days_var = getArrayValue($property_mappings, 'NewDays');
								if($new_days_var)
								{
									$condition = 	'IF('.$product_table.'.NewItem = 2,
													IF('.$product_table.'.CreatedOn >= (UNIX_TIMESTAMP() - '.
													$this->Application->ConfigValue($new_days_var).
													'*3600*24), 1, 0), '.$product_table.'.NewItem) = '.$keywords[$field];
								}
							break;
							case 'EditorsPick':
								$condition = $product_table.'.EditorsPick = '.$keywords[$field];
							break;
						}
					}
				break;
				case 'range':
					$range_conditions = Array();
					if($keywords[$field.'_from'] && !preg_match("/[^0-9]/i", $keywords[$field.'_from']))
					{
						$range_conditions[] = $field_name.' >= '.$keywords[$field.'_from'];
					}
					if($keywords[$field.'_to'] && !preg_match("/[^0-9]/i", $keywords[$field.'_to']))
					{
						$range_conditions[] = $field_name.' <= '.$keywords[$field.'_to'];
					}
					if($range_conditions)
					{
						$condition = implode(' AND ', $range_conditions);
					}
				break;
				case 'date':
					if($keywords[$field])
					{
						if( in_array($keywords[$field], Array('today', 'yesterday')) )
						{
							$current_time = getdate();
							$day_begin = adodb_mktime(0, 0, 0, $current_time['mon'], $current_time['mday'], $current_time['year']);
							$time_mapping = Array('today' => $day_begin, 'yesterday' => ($day_begin - 86400));
							$min_time = $time_mapping[$keywords[$field]];
						}
						else
						{
							$time_mapping = Array(	'last_week' => 604800,		'last_month' => 2628000,
													'last_3_months' => 7884000,	'last_6_months' => 15768000,
													'last_year' => 31536000
												);
							$min_time = adodb_mktime() - $time_mapping[$keywords[$field]];
						}
						$condition = $field_name.' > '.$min_time;
					}
				break;
			}

			if($condition)
			{
				if($join_clause)
				{
					$join_clauses[] = $join_clause;
				}
				$relevance_parts[] = 'IF('.$condition.', '.$record['Priority'].', 0)';
				if($glues[$field] == 1) // and
				{
					if($condition_mode == 'WHERE')
					{
						$and_conditions[] = $condition;
					}
					else
					{
						$and_having_conditions[] = $condition;
					}
				}
				else // or
				{
					if($condition_mode == 'WHERE')
					{
						$or_conditions[] = $condition;
					}
					else
					{
						$or_having_conditions[] = $condition;
					}
				}
			}
		}

		$this->Application->StoreVar('highlight_keywords', serialize($highlight_keywords));

		// making relevance clause
		if($relevance_parts)
		{
			$rel_keywords	= $this->Application->ConfigValue('SearchRel_DefaultKeyword_products')	/ 100;
			$rel_pop		= $this->Application->ConfigValue('SearchRel_DefaultPop_products')		/ 100;
			$rel_rating		= $this->Application->ConfigValue('SearchRel_DefaultRating_products')	/ 100;
			$relevance_clause = '('.implode(' + ', $relevance_parts).') / '.$weight_sum.' * '.$rel_keywords;
			$relevance_clause .= ' + (Hits + 1) / (MAX(Hits) + 1) * '.$rel_pop;
			$relevance_clause .= ' + (CachedRating + 1) / (MAX(CachedRating) + 1) * '.$rel_rating;
		}
		else
		{
			$relevance_clause = '0';
		}

		// building having clause
		if($or_having_conditions)
		{
			$and_having_conditions[] = '('.implode(' OR ', $or_having_conditions).')';
		}
		$having_clause = implode(' AND ', $and_having_conditions);
		$having_clause = $having_clause ? ' HAVING '.$having_clause : '';

		// building where clause
		if($or_conditions)
		{
			$and_conditions[] = '('.implode(' OR ', $or_conditions).')';
		}
//		$and_conditions[] = $product_table.'.Status = 1';
		$where_clause = implode(' AND ', $and_conditions);
		if(!$where_clause)
		{
			if($having_clause)
			{
				$where_clause = '1';
			}
			else
			{
				$where_clause = '0';
				$this->Application->SetVar('adv_search_error', 1);
			}
		}
		$where_clause .= ' AND '.$product_table.'.Status = 1';

		// building final search query
		$search_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';

		$this->Conn->Query('DROP TABLE IF EXISTS '.$search_table);

		$sql = '	CREATE TABLE '.$search_table.'
					SELECT 	'.$relevance_clause.' AS Relevance,
							'.$product_table.'.ProductId AS ItemId,
							'.$product_table.'.ResourceId AS ResourceId,
							11 AS ItemType,
							'.$product_table.'.EditorsPick AS EdPick
					FROM '.$product_table.'
					'.implode(' ', $join_clauses).'
					WHERE '.$where_clause.'
					GROUP BY '.$product_table.'.ProductId'.
					$having_clause;

		$res = $this->Conn->Query($sql);
	}

	/**
	 * Set's correct page for list
	 * based on data provided with event
	 *
	 * @param kEvent $event
	 * @access private
	 * @see OnListBuild
	 */
	function SetPagination(&$event)
	{
		// get PerPage (forced -> session -> config -> 10)
		$per_page = $this->getPerPage($event);

		$object =& $event->getObject();
		$object->SetPerPage($per_page);
		$this->Application->StoreVarDefault($event->getPrefixSpecial().'_Page', 1);

		$page = $this->Application->GetVar($event->getPrefixSpecial().'_Page');
		if (!$page)
		{
			$page = $this->Application->GetVar($event->getPrefixSpecial(true).'_Page');
		}

		if (!$page)
		{
			if( $this->Application->RewriteURLs() )
			{
				$page = $this->Application->GetVar($event->Prefix.'_Page');
				if (!$page)
				{
					$page = $this->Application->RecallVar($event->Prefix.'_Page');
				}
				if($page) $this->Application->StoreVar($event->getPrefixSpecial().'_Page', $page);
			}
			else
			{
				$page = $this->Application->RecallVar($event->getPrefixSpecial().'_Page');
			}
		}
		else {
			$this->Application->StoreVar($event->getPrefixSpecial().'_Page', $page);
		}

//			$page = $this->Application->GetLinkedVar($event->getPrefixSpecial(true).'_Page', $event->getPrefixSpecial().'_Page');
		if( !$event->getEventParam('skip_counting') )
		{
			$pages = $object->GetTotalPages();
			if($page > $pages)
			{
				$this->Application->StoreVar($event->getPrefixSpecial().'_Page', 1);
				$page = 1;
			}
		}

		/*$cur_per_page = $per_page;
		$per_page = $event->getEventParam('per_page');
		if ($per_page == 'list_next') {

			$cur_page = $page;

			$object =& $this->Application->recallObject($event->Prefix);
			$object->SetPerPage(1);
			$cur_item_index = $object->CurrentIndex;

			$page = ($cur_page-1) * $cur_per_page + $cur_item_index + 1;
			$object->SetPerPage(1);
		}*/

		$object->SetPage($page);
	}

/* === RELATED TO IMPORT/EXPORT: BEGIN === */

	/**
	 * Returns module folder
	 *
	 * @param kEvent $event
	 * @return string
	 */
	function getModuleFolder(&$event)
	{
		return $this->Application->getUnitOption($event->Prefix, 'ModuleFolder');
	}

	/**
	 * Shows export dialog
	 *
	 * @param kEvent $event
	 */
	function OnExport(&$event)
	{
		// use old fasion (in-portal) grid
		$selector_name = $this->Application->getUnitOption($event->Prefix, 'CatalogSelectorName');
		if ($selector_name) {
			$selected_ids = $this->Application->GetVar($selector_name);
		}
		else {
			$this->StoreSelectedIDs($event);
			$selected_ids = $this->getSelectedIDs($event);

			if (implode(',', $selected_ids) == '') {
				// K4 fix when no ids found bad selected ids array is formed
				$selected_ids = false;
			}
		}

		$selected_cats_ids = $this->Application->GetVar('export_categories');

		$this->Application->StoreVar($event->Prefix.'_export_ids', $selected_ids ? implode(',', $selected_ids) : '' );
		$this->Application->StoreVar($event->Prefix.'_export_cats_ids', $selected_cats_ids);

		$event->redirect = $this->getModuleFolder($event).'/export';

		$redirect_params = Array(	'm_opener' => 'd',
									'index_file' => 'index4.php',
									$this->Prefix.'.export_event' => 'OnNew',
									'pass' => 'all,'.$this->Prefix.'.export');

		$event->setRedirectParams($redirect_params);
	}

	/**
	 * Export form validation & processing
	 *
	 * @param kEvent $event
	 */
	function OnExportBegin(&$event)
	{
		$items_info = $this->Application->GetVar( $event->getPrefixSpecial(true) );
		if (!$items_info)
		{
			$items_info = unserialize( $this->Application->RecallVar($event->getPrefixSpecial().'_ItemsInfo') );
		}

		list($item_id, $field_values) = each($items_info);

		$object =& $event->getObject( Array('skip_autoload' => true) );
		$object->SetFieldsFromHash($field_values);
		$field_values['ImportFilename'] = $object->GetDBField('ImportFilename'); //if upload formatter has renamed the file during moving !!!
		$object->setID($item_id);
		$this->setRequiredFields($event);

		$export_object =& $this->Application->recallObject('CatItemExportHelper');

		// save export/import options
		if ($event->Special == 'export')
		{
			$export_ids = $this->Application->RecallVar($event->Prefix.'_export_ids');
			$export_cats_ids = $this->Application->RecallVar($event->Prefix.'_export_cats_ids');

			// used for multistep export
			$field_values['export_ids'] = $export_ids ? explode(',', $export_ids) : false;
			$field_values['export_cats_ids'] = $export_cats_ids ? explode(',', $export_cats_ids) : Array( $this->Application->GetVar('m_cat_id') );
		}

		$field_values['ExportColumns'] = $field_values['ExportColumns'] ? explode('|', substr($field_values['ExportColumns'], 1, -1) ) : Array();
		$field_values['start_from'] = 0;
		$this->Application->StoreVar($event->getPrefixSpecial().'_options', serialize($field_values) );

		if( $export_object->verifyOptions($event) )
		{
			$this->doExport($event);
		}
		else
		{
			$event->status = erFAIL;
			$event->redirect = false;
		}
	}

	/**
	 * Enter description here...
	 *
	 * @param kEvent $event
	 */
	function doExport(&$event)
	{
		if ($event->Name == 'OnExportBegin')
		{
			$done_percent = 0;
		}
		else {
			$export_options = unserialize($this->Application->RecallVar($event->getPrefixSpecial().'_options'));
			$done_percent = round($export_options['start_from']  * 100 / $export_options['total_records'], 0);
		}

		$block_params = Array(	'name' => $this->getModuleFolder($event).'/'.$event->Special.'_progress',
								'percent_done' => $done_percent,
								'percent_left' => 100 - $done_percent);

		$this->Application->InitParser();
		$this->Application->setUnitOption($event->Prefix, 'AutoLoad', false);
		echo $this->Application->ParseBlock($block_params);
		flush();

		$export_object =& $this->Application->recallObject('CatItemExportHelper');

		$action_method = 'perform'.ucfirst($event->Special);
		$field_values = $export_object->$action_method($event);

		if ($field_values['start_from'] == $field_values['total_records'])
		{
			if ($event->Special == 'import') {
				$this->Application->StoreVar('PermCache_UpdateRequired', 1);
				$event->SetRedirectParam('index_file', 'category/category_maint.php');
			}
			else {
				$event->redirect = $this->getModuleFolder($event).'/'.$event->Special.'_finish';
			}
		}
		else {
			$event->redirect = $this->getModuleFolder($event).'/'.$event->Special.'_progress';
			$redirect_params = Array($event->getPrefixSpecial().'_event' => 'OnExportProgress', 'pass' => 'm,'.$event->getPrefixSpecial());
			$event->setRedirectParams($redirect_params);
		}
	}

	/**
	 * Next export steps
	 *
	 * @param kEvent $event
	 */
	function OnExportProgress(&$event)
	{
		$this->doExport($event);
	}

	/**
	 * Sets correct available & export fields
	 *
	 * @param kEvent $event
	 */
	function prepareExportColumns(&$event)
	{
		$object =& $event->getObject( Array('skip_autoload' => true) );

		$available_columns = Array();

		// ID of category to create
		$available_columns['__CATEGORY__CategoryId'] = 'CategoryId';
		
		// category field (mixed)
		$available_columns['__CATEGORY__CategoryPath'] = 'CategoryPath';

		if ($event->Special == 'import') {
			// category field (separated fields)
			$max_level = $this->Application->ConfigValue('MaxImportCategoryLevels');
			$i = 0;
			while ($i < $max_level) {
				$available_columns['__CATEGORY__Category'.($i + 1)] = 'Category'.($i + 1);
				$i++;
			}
		}

		// db fields
		foreach ($object->Fields as $field_name => $field_options)
		{
			if (!$object->SkipField($field_name))
			{
				$available_columns[$field_name] = $field_name.(getArrayValue($field_options, 'required') ? '*' : '');
			}
		}

		$available_columns = array_merge_recursive2($available_columns, $this->getCustomExportColumns($event));

		// custom fields
		$fields = array_keys($object->CustomFields);
		foreach ($fields as $field_name)
		{
			$available_columns['__CUSTOM__'.$field_name] = $field_name;
		}

		// columns already in use
		$items_info = $this->Application->GetVar( $event->getPrefixSpecial(true) );
		if ($items_info)
		{
			list($item_id, $field_values) = each($items_info);
			$export_keys = $field_values['ExportColumns'];
			$export_keys = $export_keys ? explode('|', substr($export_keys, 1, -1) ) : Array();
		}
		else {
			$export_keys = Array();
		}

		$export_columns = Array();
		foreach ($export_keys as $field_key)
		{
			$field_name = $this->getExportField($field_key);
			$export_columns[$field_key] = $field_name;
			unset($available_columns[$field_key]);
		}

		$options = $object->GetFieldOptions('ExportColumns');
		$options['options'] = $export_columns;
		$object->SetFieldOptions('ExportColumns', $options);

		$options = $object->GetFieldOptions('AvailableColumns');
		$options['options'] = $available_columns;
		$object->SetFieldOptions('AvailableColumns', $options);

		if ($event->Special == 'import')
		{
			$import_filenames = Array();

			if ($folder_handle = opendir(EXPORT_PATH)) {
				while (false !== ($file = readdir($folder_handle))) {
					if (is_dir(EXPORT_PATH.'/'.$file) || substr($file, 0, 1) == '.' || strtolower($file) == 'cvs' || strtolower($file) == 'dummy' || filesize(EXPORT_PATH.'/'.$file) == 0) continue;

					$file_size = formatSize( filesize(EXPORT_PATH.'/'.$file) );
					$import_filenames[$file] = $file.' ('.$file_size.')';
				}
				closedir($folder_handle);
			}
   			$options = $object->GetFieldOptions('ImportLocalFilename');
			$options['options'] = $import_filenames;
			$object->SetFieldOptions('ImportLocalFilename', $options);
		}
	}

	/**
	 * Returns specific to each item type columns only
	 *
	 * @param kEvent $event
	 * @return Array
	 */
	function getCustomExportColumns(&$event)
	{
		return Array(	'__VIRTUAL__ThumbnailImage'	=>	'ThumbnailImage',
						'__VIRTUAL__FullImage' 		=>	'FullImage',
						'__VIRTUAL__ImageAlt'		=>	'ImageAlt');
	}

	/**
	 * Sets non standart virtual fields (e.g. to other tables)
	 *
	 * @param kEvent $event
	 */
	function setCustomExportColumns(&$event)
	{
		$this->restorePrimaryImage($event);
	}

	/**
	 * Create/Update primary image record in info found in imported data
	 *
	 * @param kEvent $event
	 */
	function restorePrimaryImage(&$event)
	{
		$object =& $event->getObject();

		$has_image_info = $object->GetDBField('ImageAlt') && ($object->GetDBField('ThumbnailImage') || $object->GetDBField('FullImage'));
		if (!$has_image_info) {
			return false;
		}

		$image_data = $object->getPrimaryImageData();

		$image =& $this->Application->recallObject('img', null, Array('skip_autoload' => true));
		if ($image_data) {
			$image->Load($image_data['ImageId']);
		}
		else {
			$image->Clear();
			$image->SetDBField('Name', 'main');
			$image->SetDBField('DefaultImg', 1);
			$image->SetDBField('ResourceId', $object->GetDBField('ResourceId'));
		}

		$image->SetDBField('AltName', $object->GetDBField('ImageAlt'));

		if ($object->GetDBField('ThumbnailImage')) {
			$thumbnail_field = $this->isURL( $object->GetDBField('ThumbnailImage') ) ? 'ThumbUrl' : 'ThumbPath';
			$image->SetDBField($thumbnail_field, $object->GetDBField('ThumbnailImage') );
			$image->SetDBField('LocalThumb', $thumbnail_field == 'ThumbPath' ? 1 : 0);
		}

		if (!$object->GetDBField('FullImage')) {
			$image->SetDBField('SameImages', 1);
		}
		else {
			$image->SetDBField('SameImages', 0);
			$full_field = $this->isURL( $object->GetDBField('FullImage') ) ? 'Url' : 'LocalPath';
			$image->SetDBField($full_field, $object->GetDBField('FullImage') );
			$image->SetDBField('LocalImage', $full_field == 'LocalPath' ? 1 : 0);
		}

		if ($image->isLoaded()) {
			$image->Update();
		}
		else {
			$image->Create();
		}
	}

	function isURL($path)
	{
		return preg_match('#(http|https)://(.*)#', $path);
	}

//	ImportLocalFilename

	function getExportField($field_key)
	{
		$prepends = Array('__CUSTOM__', '__CATEGORY__');
		foreach ($prepends as $prepend)
		{
			if (substr($field_key, 0, strlen($prepend) ) == $prepend)
			{
				$field_key = substr($field_key, strlen($prepend), strlen($field_key) );
				break;
			}
		}
		return $field_key;
	}

	/**
	 * Shows export dialog
	 *
	 * @param kEvent $event
	 */
	function OnImport(&$event)
	{

		$event->redirect = $this->getModuleFolder($event).'/import';

		$redirect_params = Array(	'm_opener' => 'd',
									'index_file' => 'index4.php',
									$this->Prefix.'.import_event' => 'OnNew',
									'pass' => 'all,'.$this->Prefix.'.import');

		$event->setRedirectParams($redirect_params);
	}

	/**
	 * Prepares item for import/export operations
	 *
	 * @param kEvent $event
	 */
	function OnNew(&$event)
	{
		parent::OnNew($event);

		if ($event->Special != 'import' && $event->Special != 'export') return ;
		$this->setRequiredFields($event);
		$this->Application->StoreVar('ImportCategory', 0);
	}

	/**
	 * set required fields based on import or export params
	 *
	 * @param kEvent $event
	 */
	function setRequiredFields(&$event)
	{
		$required_fields['common'] = Array('FieldsSeparatedBy', 'LineEndings', 'CategoryFormat');

		$required_fields['export'] = Array('ExportFormat', 'ExportFilename','ExportColumns');
		$required_fields['import'] = Array('FieldTitles', 'ImportSource', 'CheckDuplicatesMethod'); // ImportFilename, ImportLocalFilename

		$object =& $event->getObject();
		if ($event->Special == 'import')
		{
			$import_source = Array(1 => 'ImportFilename', 2 => 'ImportLocalFilename');
			$used_field = $import_source[ $object->GetDBField('ImportSource') ];

			$required_fields[$event->Special][] = $used_field;
			$object->Fields[$used_field]['error_field'] = 'ImportSource';

			if ($object->GetDBField('FieldTitles') == 2) $required_fields[$event->Special][] = 'ExportColumns'; // manual field titles
		}

		$required_fields = array_merge($required_fields['common'], $required_fields[$event->Special]);
		foreach ($required_fields as $required_field) {
			$object->setRequired($required_field, true);
		}
	}

	/**
	 * Saves selected category as new import category
	 *
	 * @param kEvent $event
	 */
	function OnSelectItems(&$event)
	{
		$items_info = $this->Application->GetVar('c');

		if ($items_info)
		{
			$selected_categories = array_keys($items_info);
			$cat_id = array_shift($selected_categories);

			$sql = 'SELECT CategoryId FROM '.TABLE_PREFIX.'Category WHERE ResourceId = '.$cat_id;
			$cat_id = $this->Conn->GetOne($sql);
		}
		else {
			$cat_id = 0;
		}

		$this->Application->StoreVar('ImportCategory', $cat_id);
		$this->Application->StoreVar($event->getPrefixSpecial().'_ForceNotValid', 1); // not to loose import/export values on form refresh

		$this->Application->SetVar($event->getPrefixSpecial().'_id', 0);
		$this->Application->SetVar($event->getPrefixSpecial().'_event', 'OnExportBegin');

		$passed = $this->Application->GetVar('passed');
		$this->Application->SetVar('passed', $passed.','.$event->getPrefixSpecial());
		$event->setEventParam('pass_events', true);

		$this->finalizePopup($event, null, $this->getModuleFolder($event).'/'.$event->Special);

	}

	/**
	 * Saves Import/Export settings to session
	 *
	 * @param kEvent $event
	 */
	function OnSaveSettings(&$event)
	{
		$event->redirect = false;
		$items_info = $this->Application->GetVar( $event->getPrefixSpecial(true) );
		if ($items_info) {
			$this->Application->StoreVar($event->getPrefixSpecial().'_ItemsInfo', serialize($items_info));
		}
	}

/* === RELATED TO IMPORT/EXPORT: END === */

	function BuildListSpecial($params)
	{
		if ($this->Special != '') return $this->Special;
		if ( isset($params['parent_cat_id']) ) {
			$parent_cat_id = $params['parent_cat_id'];
		}
		else {
			$parent_cat_id = $this->Application->GetVar('c_id');
			if (!$parent_cat_id) {
				$parent_cat_id = $this->Application->GetVar('m_cat_id');
			}
		}

		$recursive = isset($params['recursive']);

		$types = $this->SelectParam($params, 'types');
		$except = $this->SelectParam($params, 'except');

		if ($types.$except.$recursive == '') {
			return parent::BuildListSpecial($params);
		}

		$special = crc32($parent_cat_id.$types.$except.$recursive.$manufacturer);
		return $special;
	}

}

?>