DiscountManager::preloadProductDataToExtendOrder

static function preloadProductDataToExtendOrder(array $productIds, array $userGroups)
{
	if (empty($productIds) || empty($userGroups))
		return;
	Collection::normalizeArrayValuesByInt($productIds, true);
	if (empty($productIds))
		return;
	Collection::normalizeArrayValuesByInt($userGroups, true);
	if (empty($userGroups))
		return;

	if(self::$saleIncluded === null)
		self::$saleIncluded = Loader::includeModule('sale');

	if(!self::$saleIncluded)
		return;

	$discountCache = SaleDiscountRuntimeCacheDiscountCache::getInstance();

	$discountIds = $discountCache->getDiscountIds($userGroups);
	if(!$discountIds)
	{
		return;
	}

	Collection::normalizeArrayValuesByInt($discountIds, true);

	$entityList = $discountCache->getDiscountEntities($discountIds);
	if(!$entityList || empty($entityList['catalog']))
	{
		return;
	}

	$entityData = self::prepareEntity($entityList);
	if(!$entityData)
	{
		return;
	}

	$productIds = self::extendProductIdsToOffer($productIds);

	$iblockData = self::getProductIblocks($productIds);
	self::fillProductPropertyList($entityData, $iblockData);

	$productData = array_fill_keys($productIds, []);
	if(empty($iblockData['iblockElement']))
	{
		return;
	}

	self::getProductData($productData, $entityData, $iblockData);

	$cacheKeyForEntityList = self::getCacheKeyForEntityList($entityList);
	if(!isset(self::$preloadedProductsData[$cacheKeyForEntityList]))
	{
		self::$preloadedProductsData[$cacheKeyForEntityList] = [];
	}

	foreach($productData as $productId => $data)
	{
		self::$preloadedProductsData[$cacheKeyForEntityList][$productId] = $data;
	}
}