DiscountBase::fillEmptyOrderData

protected function fillEmptyOrderData()
{
	/** @var BasketBase $basket*/
	$basket = $this->getBasket();
	$siteId = $this->getSiteId();
	$this->orderData = [
		'ID' => 0,
		'USER_ID' => $this->context->getUserId(),
		'USER_GROUPS' => $this->context->getUserGroups(),
		'SITE_ID' => $siteId,
		'LID' => $siteId,  // compatibility only
		'ORDER_PRICE' => $basket->getBasePrice(),
		'ORDER_WEIGHT' => $basket->getWeight(),
		'CURRENCY' => $this->getCurrency(),
		'PERSON_TYPE_ID' => 0,
		'RECURRING_ID' => null,
		'BASKET_ITEMS' => [],
		'ORDER_PROP' => []
	];

	if ($this->isOrderExists())
	{
		$order = $this->getOrder();

		$this->orderData['ID'] = $order->getId();
		$this->orderData['USER_ID'] = $order->getUserId();
		$this->orderData['ORDER_PRICE'] = $order->getBasePrice();
		$this->orderData['PERSON_TYPE_ID'] = $order->getPersonTypeId();
		$this->orderData['RECURRING_ID'] = $order->getField('RECURRING_ID');

		/** @var BitrixSalePropertyValueCollection $propertyCollection */
		$propertyCollection = $order->getPropertyCollection();
		/** @var BitrixSalePropertyValue $orderProperty */
		foreach ($propertyCollection as $orderProperty)
			$this->orderData['ORDER_PROP'][$orderProperty->getPropertyId()] = $orderProperty->getValue();
		unset($orderProperty);
		foreach ($this->getOrderPropertyCodes() as $propertyCode => $attribute)
		{
			$this->orderData[$propertyCode] = '';
			$orderProperty = $propertyCollection->getAttribute($attribute);
			if ($orderProperty instanceof PropertyValue)
				$this->orderData[$propertyCode] = $orderProperty->getValue();
			unset($orderProperty);
		}
		unset($propertyCode, $attribute);
		unset($propertyCollection);

		unset($order);
	}
	unset($siteId);
	unset($basket);
}