storage.php

<?php
 
namespace Bitrix\Sale\Basket;
 
use Bitrix\Sale;
use Bitrix\Main;
 
class Storage
{
    private static $instance = array();
    protected $basket;
    protected $orderableBasket;
 
    private $fUserId;
    private $siteId;
 
    private function __construct($fUserId, $siteId)
    {
        $this->fUserId = $fUserId;
        $this->siteId = $siteId;
    }
 
    private function __clone()
    {
    }
 
    protected static function getHash($fUserId, $siteId)
    {
        return "{$fUserId}_{$siteId}";
    }
 
    protected function getFUserId()
    {
        return $this->fUserId;
    }
 
    protected function getSiteId()
    {
        return $this->siteId;
    }
 
    public static function getInstance($fUserId, $siteId)
    {
        if (empty($fUserId))
        {
            throw new Main\ArgumentNullException('fUserId');
        }
 
        if (empty($siteId))
        {
            throw new Main\ArgumentNullException('siteId');
        }
 
        $hash = static::getHash($fUserId, $siteId);
 
        if (!isset(static::$instance[$hash]))
        {
            static::$instance[$hash] = new static($fUserId, $siteId);
        }
 
        return static::$instance[$hash];
    }
 
    public function getBasket()
    {
        if (!isset($this->basket))
        {
            $registry = Sale\Registry::getInstance(Sale\Registry::REGISTRY_TYPE_ORDER);
 
            $basketClassName = $registry->getBasketClassName();
 
            $this->basket = $basketClassName::loadItemsForFUser($this->getFUserId(), $this->getSiteId());
        }
 
        return $this->basket;
    }
 
    public function getOrderableBasket()
    {
        if (!isset($this->orderableBasket))
        {
            $basketClone = $this->getBasket()->createClone();
            $this->orderableBasket = $basketClone->getOrderableItems();
        }
 
        return $this->orderableBasket;
    }
}