basketitemupdateproductreservehandlers.php

<?php
 
namespace Bitrix\Sale\Reservation\Event\Handler;
 
use Bitrix\Main\Event;
use Bitrix\Sale\BasketItem;
use Bitrix\Sale\Internals\Catalog\Provider;
use Bitrix\Sale\ReserveQuantity;
 
class BasketItemUpdateProductReserveHandlers
{
    private static $basketReserves = [];
 
    public static function OnSaleBasketItemSetField(Event $event): void
    {
        $name = $event->getParameter('NAME');
        $basketItem = $event->getParameter('ENTITY');
        if ($name !== 'PRODUCT_ID' || !($basketItem instanceof BasketItem))
        {
            return;
        }
 
        $reserveQuantityCollection = $basketItem->getReserveQuantityCollection();
        if (!isset($reserveQuantityCollection) || $reserveQuantityCollection->isEmpty())
        {
            return;
        }
 
        $reserves = [];
        foreach ($reserveQuantityCollection as $reserveQuantity)
        {
            $reserves[] = [
                'STORE_ID' => $reserveQuantity->getStoreId(),
                'QUANTITY' => $reserveQuantity->getQuantity(),
                'DATE_RESERVE_END' => $reserveQuantity->getField('DATE_RESERVE_END'),
            ];
            $result = $reserveQuantity->delete();
 
            if (!$result->isSuccess())
            {
                $reserveQuantity->setFieldNoDemand('QUANTITY', 0);
 
                Provider::tryReserve($reserveQuantity);
 
                $reserveQuantity->deleteNoDemand();
            }
        }
 
        self::$basketReserves[$basketItem->getBasketCode()] = $reserves;
    }
 
    public static function OnAfterSaleBasketItemSetField(Event $event): void
    {
        $name = $event->getParameter('NAME');
        $basketItem = $event->getParameter('ENTITY');
        if ($name !== 'PRODUCT_ID' || !($basketItem instanceof BasketItem))
        {
            return;
        }
 
        $reserveQuantityCollection = $basketItem->getReserveQuantityCollection();
        if (!isset($reserveQuantityCollection))
        {
            return;
        }
 
        $reserves = self::$basketReserves[$basketItem->getBasketCode()] ?? null;
        if (empty($reserves))
        {
            return;
        }
 
        foreach ($reserves as $reserve)
        {
            $reserveQuantity = $reserveQuantityCollection->create();
            $result = $reserveQuantity->setFields($reserve);
 
            if (!$result->isSuccess())
            {
                $reserveQuantity->setFieldsNoDemand($reserve);
                Provider::tryReserve($reserveQuantity);
            }
        }
 
        unset(self::$basketReserves[$basketItem->getBasketCode()]);
    }
}