DiscountCompatibility::calculateBasketItemDiscount

static function calculateBasketItemDiscount($code, $fields)
{
	if (CSaleBasketHelper::isSetItem($fields))
		return true;
	if (empty(self::$basketDiscountList[$code]))
		return true;

	$itemData = array(
		'MODULE_ID' => $fields['MODULE'],
		'PRODUCT_ID' => $fields['PRODUCT_ID'],
		'BASKET_ID' => $code
	);
	foreach (self::$basketDiscountList[$code] as $index => $discount)
	{
		$discountResult = self::convertDiscount($discount);
		if (!$discountResult->isSuccess())
			return false;

		$orderDiscountId = $discountResult->getId();
		$discountData = $discountResult->getData();
		$orderCouponId = '';
		self::$basketDiscountList[$code][$index]['ORDER_DISCOUNT_ID'] = $orderDiscountId;
		if ($discountData['USE_COUPONS'] == 'Y')
		{
			if (empty($discount['COUPON']))
				return false;

			$couponResult = self::convertCoupon($discount['COUPON'], $orderDiscountId);
			if (!$couponResult->isSuccess())
				return false;

			$orderCouponId = $couponResult->getId();
			SaleDiscountCouponsManager::setApplyByProduct($itemData, array($orderCouponId));
			unset($couponResult);
		}
		unset($discountData, $discountResult);
		if (!isset(self::$discountResult['BASKET'][$code]))
			self::$discountResult['BASKET'][$code] = array();
		self::$discountResult['BASKET'][$code][$index] = array(
			'DISCOUNT_ID' => $orderDiscountId,
			'COUPON_ID' => $orderCouponId,
			'RESULT' => array(
				'APPLY' => 'Y',
				'DESCR' => false,
				'DESCR_DATA' => false
			)
		);

		$orderApplication = (
			!empty(self::$discountsCache[$orderDiscountId]['APPLICATION'])
			? self::$discountsCache[$orderDiscountId]['APPLICATION']
			: null
		);
		if (!empty($orderApplication))
		{
			$fields['DISCOUNT_RESULT'] = (
				!empty(self::$discountsCache[$orderDiscountId]['ACTIONS_DESCR_DATA'])
				? self::$discountsCache[$orderDiscountId]['ACTIONS_DESCR_DATA']
				: false
			);

			$applyProduct = null;
			eval('$applyProduct='.$orderApplication.';');
			if (is_callable($applyProduct))
				$applyProduct($fields);
			unset($applyProduct);

			if (!empty($fields['DISCOUNT_RESULT']))
			{
				self::$discountResult['BASKET'][$code][$index]['RESULT']['DESCR_DATA'] = $fields['DISCOUNT_RESULT']['BASKET'];
				self::$discountResult['BASKET'][$code][$index]['RESULT']['DESCR'] = self::formatDescription($fields['DISCOUNT_RESULT']);
			}
			unset($fields['DISCOUNT_RESULT']);
		}
		unset($orderApplication);
	}
	unset($discount, $index);

	return true;
}