<?php

/**
 * Product: Katyshop
 * @version 0.3.2.1
 * @author Catalin Hulea - hide@address.com
 * @copyright Copyright (C) 2007 Catalin Hulea
 * @license GNU General Public License version 3
 * 			You can find a copy of GNU GPL v3 at this path: /docs/LICENSE
 * @link https://sourceforge.net/projects/katyshop
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */

class TableCategory extends MysqlTable
{
	function TableCategory(&$database, $tableName)
	{
		parent::MysqlTable($database, $tableName);
	}

	function createLogicObject()
	{
		return new Category();
	}

	/**
	 * @return Category
	 */
	function getRecordById($id)
	{
		$ret = new Category();
		$q = "select * from {$this->name}
			where id = '" . $this->db->escape($id) . "' ";
		$res = $this->db->query($q);
		if($row = $this->db->fetch_array($res))
			$ret->copyFromArray($row);
		return $ret;
	}

	/**
	 * @return Category
	 */
	function getCategoryByTitle($title, $id_parent)
	{
		$ret = new Category();
		$q = "select * from {$this->name}
			where title = '" . $this->db->escape($title) . "'
			and id_parent = '" . $this->db->escape($id_parent) . "' ";
		$res = $this->db->query($q);
		if($row = $this->db->fetch_array($res))
			$ret->copyFromArray($row);
		return $ret;
	}

	/**
	 * @return Category
	 */
	function getCategoryByPos($pos, $id_parent)
	{
		$ret = new Category();
		$q = "select * from {$this->name}
			where pos = '" . $this->db->escape($pos) . "'
			and id_parent = '" . $this->db->escape($id_parent) . "' ";
		$res = $this->db->query($q);
		if($row = $this->db->fetch_array($res))
			$ret->copyFromArray($res);
		return $ret;
	}

	function categoryExists($id)
	{
		$q = "select count(*) as total from {$this->name}
			where id = '" . $this->db->escape($id) . "' ";
		$res = $this->db->query($q);
		$row = $this->db->fetch_array($res);
		return (intval(@$row["total"]) > 0);
	}

	function getChildCategories($id, $orderBy = "pos", $orderDirection = "asc", $onlyActive = false)
	{
		$fs = $this->getFields();
		if(!in_array($orderBy, $fs))
			$orderBy = "pos";
		if(!in_array($orderDirection, array("asc", "desc")))
			$orderDirection = "asc";

		$where = ($onlyActive) ? "and active = '1' " : "";

		$ret = array();
		$q = "select * from {$this->name}
			where id_parent = '" . $this->db->escape($id) . "'
			$where
			order by $orderBy $orderDirection ";
		$res = $this->db->query($q);
		while($row = $this->db->fetch_array($res))
		{
			$c = new Category();
			$c->copyFromArray($row);
			$ret[] = $c;
		}
		return $ret;
	}

	function getChildrenCount($id)
	{
		$q = "select count(*) as total from {$this->name}
			where id_parent = '" . $this->db->escape($id) . "' ";
		$res = $this->db->query($q);
		$row = $this->db->fetch_array($res);
		return intval(@$row["total"]);
	}

	function getAllChildIds($id_category)
	{
		$ret = array();
		$q = "select id from {$this->name}
			where id_parent = '" . $this->db->escape($id_category) . "' ";
		$res = $this->db->query($q);
		while($row = $this->db->fetch_array($res))
		{
			$ret[] = $row["id"];
			$temp = $this->getAllChildIds($row["id"]);
			$ret = array_merge($ret, $temp);
		}
		return $ret;
	}

	function getBreadcrumb($id)
	{
		$ret = array();
		$q = "select * from {$this->name}
			where id = '" . $this->db->escape($id) . "' ";
		$res = $this->db->query($q);
		if($row = $this->db->fetch_array($res))
		{
			$c = new Category();
			$c->copyFromArray($row);
			if(intval($row["id_parent"]) > 0)
				$ret = $this->getBreadcrumb($row["id_parent"]);
			$ret[] = $c;
		}
		return $ret;
	}

	function getMaxPos($id_parent)
	{
		$q = "select max(pos) as max_pos from {$this->name}
			where id_parent = '" . $this->db->escape($id_parent) . "' ";
		$res = $this->db->query($q);
		$row = $this->db->fetch_array($res);
		return intval(@$row["max_pos"]);
	}

	/**
	 * extract old position from the stack of positions:
	 */
	function removePosition($pos, $id_parent)
	{
		$q = "update {$this->name} set pos = pos - 1
			where pos >= '" . $this->db->escape($pos) . "'
			and id_parent = '" . $this->db->escape($id_parent) . "' ";
		$this->db->query($q);
	}

	// make room in the stack of positions for this category:
	function insertPosition($pos, $id_parent)
	{
		$q = "update {$this->name} set pos = pos + 1
			where pos >= '" . $this->db->escape($pos) . "'
			and id_parent = '" . $this->db->escape($id_parent) . "' ";
		$this->db->query($q);
	}

	/**
	 * @param Category $c
	 */
	function save(&$c)
	{
		$max_pos = $this->getMaxPos($c->id_parent);
		$parentCategory = $this->getRecordById($c->id_parent);
		$c->nest_level = $parentCategory->nest_level + 1;

		if($c->id > 0)
		{
			$oldRecord = $this->getRecordById($c->id);
			if($oldRecord->pos != $c->pos || $oldRecord->id_parent != $c->id_parent)
			{
				$this->removePosition($oldRecord->pos, $oldRecord->id_parent);
				$this->insertPosition($c->pos, $c->id_parent);
			}
			parent::updateObj($c);
		}
		else
		{
			$this->insertPosition($c->pos, $c->id_parent);
			parent::insertObj($c);
			$c->id = $this->db->lastInsertId();
		}
	}

	/**
	 * @param Category $c
	 */
	function deleteObj($c)
	{
		$children = $this->getChildCategories($c->id);
		for($i = 0; $i < count($children); $i++)
			$this->deleteObj($children[$i]);
		$this->removePosition($c->pos, $c->id_parent);
		$c->removeImages();
		$this->db->tbProduct->deleteByCategoryId($c->id);
		parent::deleteObj($c);
	}

}

?>