<?php
/**
 * LiveStreet CMS
 * Copyright © 2013 OOO "ЛС-СОФТ"
 *
 * ------------------------------------------------------
 *
 * Official site: www.livestreetcms.com
 * Contact e-mail: office@livestreetcms.com
 *
 * GNU General Public License, version 2:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 *
 * ------------------------------------------------------
 *
 * @link http://www.livestreetcms.com
 * @copyright 2013 OOO "ЛС-СОФТ"
 * @author Maxim Mzhelskiy <rus.engine@gmail.com>
 *
 */

/**
 * Маппер для работы с БД
 *
 * @package modules.media
 * @since 1.0
 */
class ModuleMedia_MapperMedia extends Mapper {

	public function GetMediaByTarget($sTargetType,$iTargetId,$iUserId=null) {
		$sFieldsJoinReturn=$this->GetFieldsRelationTarget();
		$sql = "SELECT
					{$sFieldsJoinReturn},
                    m.*
                FROM ".Config::Get('db.table.media_target')." AS t
                	 JOIN ".Config::Get('db.table.media')." as m on ( m.id=t.media_id { and m.user_id = ?d } )
                WHERE
                	t.target_id = ?d
                	AND
                	t.target_type = ?
                ORDER BY
                    m.id desc
				limit 0,500";

		$aResult = array();
		if ($aRows = $this->oDb->select($sql,$iUserId ? $iUserId : DBSIMPLE_SKIP,$iTargetId, $sTargetType)) {
			$aResult=$this->PrepareResultTarget($aRows);
		}
		return $aResult;
	}

	public function GetMediaByTargetTmp($sTargetTmp,$iUserId=null) {
		$sFieldsJoinReturn=$this->GetFieldsRelationTarget();
		$sql = "SELECT
					{$sFieldsJoinReturn},
                    m.*
                FROM ".Config::Get('db.table.media_target')." AS t
                	 JOIN ".Config::Get('db.table.media')." as m on ( m.id=t.media_id { and m.user_id = ?d } )
                WHERE
                	t.target_tmp = ?
                ORDER BY
                    m.id desc
				limit 0,500";

		$aResult = array();
		if ($aRows = $this->oDb->select($sql,$iUserId ? $iUserId : DBSIMPLE_SKIP,$sTargetTmp)) {
			$aResult=$this->PrepareResultTarget($aRows);
		}
		return $aResult;
	}

	public function RemoveTargetByTypeAndId($sTargetType,$iTargetId) {
		$sql = "DELETE
                FROM ".Config::Get('db.table.media_target')."
                WHERE
                	target_id = ?d
                	AND
                	target_type = ?
                	";
		if ($this->oDb->query($sql,$iTargetId,$sTargetType)!==false) {
			return true;
		}
		return false;
	}

	protected function GetFieldsRelationTarget() {
		$oEntityJoinSample=Engine::GetEntity('ModuleMedia_EntityTarget');
		/**
		 * Формируем список полей для возврата у таблице связей
		 */
		$aFieldsJoinReturn=$oEntityJoinSample->_getFields();
		foreach($aFieldsJoinReturn as $k=>$sField) {
			if (!is_numeric($k)) {
				// Удаляем служебные (примари) поля
				unset($aFieldsJoinReturn[$k]);
				continue;
			}
			$aFieldsJoinReturn[$k]="t.`{$sField}` as t_join_{$sField}";
		}
		$sFieldsJoinReturn=join(', ',$aFieldsJoinReturn);
		return $sFieldsJoinReturn;
	}

	protected function PrepareResultTarget($aRows) {
		$aResult=array();
		foreach ($aRows as $aRow) {
			$aData=array();
			$aDataRelation=array();
			foreach($aRow as $k=>$v) {
				if (strpos($k,'t_join_')===0) {
					$aDataRelation[str_replace('t_join_','',$k)]=$v;
				} else {
					$aData[$k]=$v;
				}
			}
			$aData['_relation_entity']=Engine::GetEntity('ModuleMedia_EntityTarget',$aDataRelation);
			$oEntity=Engine::GetEntity('ModuleMedia_EntityMedia',$aData);
			$oEntity->_SetIsNew(false);
			$aResult[]=$oEntity;
		}
		return $aResult;
	}
}