concreteproduct.php

<?php
 
namespace Bitrix\Sale\Services\PaySystem\Restrictions;
 
use Bitrix\Main\Localization\Loc;
use Bitrix\Sale\Internals\Entity;
use Bitrix\Sale\PayableBasketItem;
use Bitrix\Sale\Payment;
use Bitrix\Sale\Services\Base\ConcreteProductRestriction;
 
Loc::loadMessages(__FILE__);
 
class ConcreteProduct extends ConcreteProductRestriction
{
    protected static function getJsHandler(): string
    {
        return 'BX.Sale.PaySystem';
    }
 
    public static function getClassDescription() : string
    {
        return '';
    }
 
    protected static function getBasketItems(Entity $entity): array
    {
        if (!$entity instanceof Payment)
        {
            return [];
        }
 
        $basketItems = [];
 
        $payableItemCollection = $entity->getPayableItemCollection();
        if ($payableItemCollection->isEmpty())
        {
            if (!$collection = $entity->getCollection())
            {
                return [];
            }
 
            if (!$order =  $collection->getOrder())
            {
                return [];
            }
 
            if ($basket = $order->getBasket())
            {
                return $basket->getBasketItems();
            }
        }
        else
        {
            $basketItemCollection = $payableItemCollection->getBasketItems();
 
            foreach ($basketItemCollection as $payableBasketItem)
            {
                $basketItems[] = $payableBasketItem->getEntityObject();
            }
        }
 
        return $basketItems;
    }
}