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Name File: StockMvt.php

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<?php
/*
* 2007-2013 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2013 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

/**
 * @since 1.5.0 It now defines stock movements when the advanced stock management system is available
 */
class StockMvtCore extends ObjectModel
{
	public $id;

	/**
	 * @var string The creation date of the movement
	 */
	public $date_add;

	/**
	 * @var int The employee id, responsible of the movement
	 */
	public $id_employee;

	/**
	 * @since 1.5.0
	 * @var string The first name of the employee responsible of the movement
	 */
	public $employee_firstname;

	/**
	 * @since 1.5.0
	 * @var string The last name of the employee responsible of the movement
	 */
	public $employee_lastname;

	/**
	 * @since 1.5.0
	 * @var int The stock id on wtich the movement is applied
	 */
	public $id_stock;

	/**
	 * @since 1.5.0
	 * @var int the quantity of product with is moved
	 */
	public $physical_quantity;

	/**
	 * @var int id of the movement reason assoiated to the movement
	 */
	public $id_stock_mvt_reason;

	/**
	 * @var int Used when the movement is due to a customer order
	 */
	public $id_order = null;

	/**
	 * @since 1.5.0
	 * @var int detrmine if the movement is a positive or negative operation
	 */
	public $sign;

	/**
	 * @since 1.5.0
	 * @var int Used when the movement is due to a supplier order
	 */
	public $id_supply_order = null;

	/**
	 * @since 1.5.0
	 * @var float Last value of the weighted-average method
	 */
	public $last_wa = null;

	/**
	 * @since 1.5.0
	 * @var float Current value of the weighted-average method
	 */
	public $current_wa = null;

	/**
	 * @since 1.5.0
	 * @var float The unit price without tax of the product associated to the movement
	 */
	public $price_te;

	/**
	 * @since 1.5.0
	 * @var int Refers to an other id_stock_mvt : used for LIFO/FIFO implementation in StockManager
	 */
	public $referer;

	/**
	 * @deprecated since 1.5.0
	 * @deprecated stock movement will not be updated anymore
	 */
	public $date_upd;

	/**
	 * @deprecated since 1.5.0
	 * @see physical_quantity
	 * @var int
	 */
	public $quantity;

	/**
	 * @see ObjectModel::$definition
	 */
	public static $definition = array(
		'table' => 'stock_mvt',
		'primary' => 'id_stock_mvt',
		'fields' => array(
			'id_employee' => 		array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId', 'required' => true),
			'employee_firstname' => array('type' => self::TYPE_STRING, 'validate' => 'isName'),
			'employee_lastname' => 	array('type' => self::TYPE_STRING, 'validate' => 'isName'),
			'id_stock' => 			array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId', 'required' => true),
			'physical_quantity' => 	array('type' => self::TYPE_INT, 'validate' => 'isUnsignedInt', 'required' => true),
			'id_stock_mvt_reason' =>array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId', 'required' => true),
			'id_order' => 			array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
			'id_supply_order' => 	array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
			'sign' => 				array('type' => self::TYPE_INT, 'validate' => 'isInt', 'required' => true),
			'last_wa' => 			array('type' => self::TYPE_FLOAT, 'validate' => 'isPrice'),
			'current_wa' => 		array('type' => self::TYPE_FLOAT, 'validate' => 'isPrice'),
			'price_te' => 			array('type' => self::TYPE_FLOAT, 'validate' => 'isPrice', 'required' => true),
			'referer' => 			array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
			'date_add' => 			array('type' => self::TYPE_DATE, 'validate' => 'isDate', 'required' => true),
		),
	);

	protected $webserviceParameters = array(
		'objectsNodeName' => 'stock_movements',
		'objectNodeName' => 'stock_movement',
		'fields' => array(
			'id_employee' => array('xlink_resource'=> 'employees'),
			'id_stock' => array('xlink_resource'=> 'stock'),
			'id_stock_mvt_reason' => array('xlink_resource'=> 'stock_movement_reasons'),
			'id_order' => array('xlink_resource'=> 'orders'),
			'id_supply_order' => array('xlink_resource'=> 'supply_order'),
		),
	);

	/**
	 * @deprecated since 1.5.0
	 *
	 * This method no longer exists.
	 * There is no equivalent or replacement, considering that this should be handled by inventories.
	 */
	public static function addMissingMvt($id_employee)
	{
		// display that this method is deprecated
		Tools::displayAsDeprecated();
	}

	/**
	 * Gets the negative (decrements the stock) stock mvts that correspond to the given order, for :
	 * the given product, in the given quantity.
	 *
	 * @since 1.5.0
	 * @param int $id_order
	 * @param int $id_product
	 * @param int $id_product_attribute Use 0 if the product does not have attributes
	 * @param int $quantity
	 * @param int $id_warehouse Optional
	 * @return Array mvts
	 */
	public static function getNegativeStockMvts($id_order, $id_product, $id_product_attribute, $quantity, $id_warehouse = null)
	{
		$movements = array();
		$quantity_total = 0;

		// preps query
		$query = new DbQuery();
		$query->select('sm.*, s.id_warehouse');
		$query->from('stock_mvt', 'sm');
		$query->innerJoin('stock', 's', 's.id_stock = sm.id_stock');
		$query->where('sm.sign = -1');
		$query->where('sm.id_order = '.(int)$id_order);
		$query->where('s.id_product = '.(int)$id_product.' AND s.id_product_attribute = '.(int)$id_product_attribute);

		// if filer by warehouse
		if (!is_null($id_warehouse))
			$query->where('s.id_warehouse = '.(int)$id_warehouse);

		// orders the movements by date
		$query->orderBy('date_add DESC');

		// gets the result
		$res = Db::getInstance(_PS_USE_SQL_SLAVE_)->query($query);

		// fills the movements array
		while ($row = Db::getInstance(_PS_USE_SQL_SLAVE_)->nextRow($res))
		{
			if ($quantity_total >= $quantity)
				break;
			$quantity_total += (int)$row['physical_quantity'];
			$movements[] = $row;
		}

		return $movements;
	}

	/**
	 * For a given product, gets the last positive stock mvt
	 *
	 * @since 1.5.0
	 * @param int $id_product
	 * @param int $id_product_attribute Use 0 if the product does not have attributes
	 * @return bool|array
	 */
	public static function getLastPositiveStockMvt($id_product, $id_product_attribute)
	{
		$query = new DbQuery();
		$query->select('sm.*, w.id_currency, (s.usable_quantity = sm.physical_quantity) as is_usable');
		$query->from('stock_mvt', 'sm');
		$query->innerJoin('stock', 's', 's.id_stock = sm.id_stock');
		$query->innerJoin('warehouse', 'w', 'w.id_warehouse = s.id_warehouse');
		$query->where('sm.sign = 1');
		$query->where('s.id_product = '.(int)$id_product.' AND s.id_product_attribute = '.(int)$id_product_attribute);
		$query->orderBy('date_add DESC');

		$res = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($query);

		if ($res != false)
			return $res['0'];
		return false;
	}

}