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<?php
	/**
* 2007-2018 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 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/afl-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 2007-2018 PrestaShop SA
*  @license   http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

if(!class_exists('WeightPack')){
		include_once 'class-hit-weight-packing-util.php';
		class WeightPack{
			private $package_requests;
			private $pack_obj;
			public function __construct( $strategy, $options=array() ){

switch($strategy){
					case 'pack_ascending':
						include_once 'class-hit-weight-strategy-ascend.php';
						$this->pack_obj	=	new WeightPackAscend();
						break;
						//case 'pack_descending':
					case 'pack_simple':
						include_once 'class-hit-weight-strategy-simple.php';
						$this->pack_obj	=	new WeightPackSimple();
						break;
					default:
						include_once 'class-hit-weight-strategy-descend.php';
						$this->pack_obj	=	new WeightPackDescend();
						break;
				}
			}

public function set_max_weight($max_weight){
				$this->pack_obj->set_max_weight($max_weight);
			}

public function add_item($item_weight,	$item_data,	$quantity){
				$this->pack_obj->add_item($item_weight,	$item_data,	$quantity);
			}

public function pack_items(){
				$this->pack_obj->pack_items();
				return $this->get_result();
			}

public function get_packable_items(){
				return $this->pack_obj->get_packable_items();
			}

public function get_result(){
				return $this->pack_obj->get_result();
			}
		}

abstract class WeightPackStrategy{
			private $packable_items	=	array();
			private $max_weight;
			public 	$pack_util;
			private $result;

public function __construct(){
				$this->pack_util	=	new WeightPacketUtil();				
			}

public function set_max_weight($max_weight){
				$this->max_weight	=	$max_weight;
			}

public function get_max_weight(){
				return $this->max_weight;
			}

public function set_result($result){
				$this->result	=	$result;
			}

public function get_result(){
				return $this->result;
			}

public function get_packable_items(){
				return $this->packable_items;
			}

public function add_item($item_weight, $item_data, $quantity=1){
				for($i=0;$i<$quantity;$i++){
					$this->packable_items[]=array(
						'weight'	=>	$item_weight,
						'data'		=>	$item_data
					);
				}
			}

abstract public function pack_items();
		}

class WeightPackResult{
			private	$errors		=	array();
			private $packed		=	array();
			private	$unpacked	=	array();

public function set_error($errors){
				$this->errors[]		=	$errors;
			}

public function set_packed_boxes($packages){
				$this->packed		=	$packages;
			}

public function set_unpacked_items($packages){
				$this->unpacked		=	$packages;
			}

public function get_errors(){
				return $this->errors;
			}

public function get_packed_boxes(){
				return $this->packed;
			}

public function get_unpacked_items(){
				return $this->unpacked;
			}
		}
	}