com.liferay.commerce.discount.internal.CommerceDiscountCalculationImpl Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.commerce.discount.internal;
import com.liferay.commerce.context.CommerceContext;
import com.liferay.commerce.currency.model.CommerceCurrency;
import com.liferay.commerce.currency.model.CommerceMoney;
import com.liferay.commerce.currency.model.CommerceMoneyFactory;
import com.liferay.commerce.discount.CommerceDiscountCalculation;
import com.liferay.commerce.discount.CommerceDiscountValue;
import com.liferay.commerce.discount.constants.CommerceDiscountConstants;
import com.liferay.commerce.discount.model.CommerceDiscount;
import com.liferay.commerce.discount.model.CommerceDiscountRule;
import com.liferay.commerce.discount.rule.type.CommerceDiscountRuleType;
import com.liferay.commerce.discount.rule.type.CommerceDiscountRuleTypeRegistry;
import com.liferay.commerce.discount.service.CommerceDiscountRuleLocalService;
import com.liferay.commerce.model.CommerceOrder;
import com.liferay.commerce.product.model.CPInstance;
import com.liferay.commerce.product.service.CPInstanceLocalService;
import com.liferay.portal.kernel.dao.orm.QueryUtil;
import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.util.Validator;
import java.math.BigDecimal;
import java.math.MathContext;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
/**
* @author Marco Leo
*/
@Component(
property = "commerce.discount.calculation.key=v1.0",
service = CommerceDiscountCalculation.class
)
public class CommerceDiscountCalculationImpl
extends BaseCommerceDiscountCalculation {
@Override
public CommerceDiscountValue getOrderShippingCommerceDiscountValue(
CommerceOrder commerceOrder, BigDecimal shippingAmount,
CommerceContext commerceContext)
throws PortalException {
if (commerceOrder == null) {
return null;
}
return _getCommerceDiscountValue(
commerceOrder, shippingAmount, commerceContext,
CommerceDiscountConstants.TARGET_SHIPPING);
}
@Override
public CommerceDiscountValue getOrderSubtotalCommerceDiscountValue(
CommerceOrder commerceOrder, BigDecimal subtotalAmount,
CommerceContext commerceContext)
throws PortalException {
if (commerceOrder == null) {
return null;
}
return _getCommerceDiscountValue(
commerceOrder, subtotalAmount, commerceContext,
CommerceDiscountConstants.TARGET_SUBTOTAL);
}
@Override
public CommerceDiscountValue getOrderTotalCommerceDiscountValue(
CommerceOrder commerceOrder, BigDecimal totalAmount,
CommerceContext commerceContext)
throws PortalException {
if (commerceOrder == null) {
return null;
}
return _getCommerceDiscountValue(
commerceOrder, totalAmount, commerceContext,
CommerceDiscountConstants.TARGET_TOTAL);
}
@Override
public CommerceDiscountValue getProductCommerceDiscountValue(
long cpInstanceId, int quantity, BigDecimal productUnitPrice,
CommerceContext commerceContext)
throws PortalException {
CPInstance cpInstance = _cpInstanceLocalService.getCPInstance(
cpInstanceId);
List commerceDiscounts =
getProductCommerceDiscountByHierarchy(
cpInstance.getCompanyId(), commerceContext.getCommerceAccount(),
commerceContext.getCommerceChannelId(),
cpInstance.getCPDefinitionId());
if (commerceDiscounts.isEmpty()) {
return null;
}
String couponCode = null;
CommerceOrder commerceOrder = commerceContext.getCommerceOrder();
if (commerceOrder != null) {
couponCode = commerceOrder.getCouponCode();
}
return _getCommerceDiscountValue(
productUnitPrice, quantity, couponCode, commerceContext,
commerceDiscounts);
}
@Override
public CommerceDiscountValue getProductCommerceDiscountValue(
long cpInstanceId, long commercePriceListId, int quantity,
BigDecimal productUnitPrice, CommerceContext commerceContext)
throws PortalException {
return getProductCommerceDiscountValue(
cpInstanceId, quantity, productUnitPrice, commerceContext);
}
private CommerceDiscountValue _getCommerceDiscountValue(
BigDecimal amount, int quantity, String couponCode,
CommerceContext commerceContext,
List commerceDiscounts)
throws PortalException {
List commerceDiscountValues = new ArrayList<>();
CommerceCurrency commerceCurrency =
commerceContext.getCommerceCurrency();
for (CommerceDiscount commerceDiscount : commerceDiscounts) {
String discountCouponCode = commerceDiscount.getCouponCode();
if (!Validator.isBlank(discountCouponCode) &&
!Objects.equals(couponCode, discountCouponCode)) {
continue;
}
if (_isValidDiscount(commerceContext, commerceDiscount)) {
commerceDiscountValues.add(
_getCommerceDiscountValue(
commerceDiscount, amount, quantity, commerceCurrency));
}
}
BigDecimal currentDiscountAmount = BigDecimal.ZERO;
CommerceDiscountValue selectedDiscount = null;
for (CommerceDiscountValue commerceDiscountValue :
commerceDiscountValues) {
if (commerceDiscountValue == null) {
continue;
}
CommerceMoney discountAmount =
commerceDiscountValue.getDiscountAmount();
if (currentDiscountAmount.compareTo(discountAmount.getPrice()) <
0) {
currentDiscountAmount = discountAmount.getPrice();
selectedDiscount = commerceDiscountValue;
}
}
return selectedDiscount;
}
private CommerceDiscountValue _getCommerceDiscountValue(
CommerceDiscount commerceDiscount, BigDecimal amount, int quantity,
CommerceCurrency commerceCurrency) {
if ((amount == null) || (amount.compareTo(BigDecimal.ZERO) <= 0)) {
return null;
}
BigDecimal[] values = new BigDecimal[4];
if (commerceDiscount.isUsePercentage()) {
values[0] = commerceDiscount.getLevel1();
values[1] = commerceDiscount.getLevel2();
values[2] = commerceDiscount.getLevel3();
values[3] = commerceDiscount.getLevel4();
}
BigDecimal currentDiscountAmount = BigDecimal.ZERO;
BigDecimal discountedAmount = amount;
if (commerceDiscount.isUsePercentage()) {
currentDiscountAmount = _getDiscountAmount(
discountedAmount, commerceDiscount.getLevel1());
discountedAmount = discountedAmount.subtract(currentDiscountAmount);
currentDiscountAmount = _getDiscountAmount(
discountedAmount, commerceDiscount.getLevel2());
discountedAmount = discountedAmount.subtract(currentDiscountAmount);
currentDiscountAmount = _getDiscountAmount(
discountedAmount, commerceDiscount.getLevel3());
discountedAmount = discountedAmount.subtract(currentDiscountAmount);
currentDiscountAmount = amount.subtract(discountedAmount);
BigDecimal maximumDiscountAmount =
commerceDiscount.getMaximumDiscountAmount();
if ((maximumDiscountAmount.compareTo(BigDecimal.ZERO) > 0) &&
(currentDiscountAmount.compareTo(maximumDiscountAmount) > 0)) {
currentDiscountAmount =
commerceDiscount.getMaximumDiscountAmount();
discountedAmount = amount.subtract(currentDiscountAmount);
}
}
else {
currentDiscountAmount = commerceDiscount.getLevel1();
if (currentDiscountAmount.compareTo(discountedAmount) > 0) {
currentDiscountAmount = discountedAmount;
}
discountedAmount = discountedAmount.subtract(currentDiscountAmount);
}
CommerceMoney discountAmount = _commerceMoneyFactory.create(
commerceCurrency,
currentDiscountAmount.multiply(new BigDecimal(quantity)));
RoundingMode roundingMode = RoundingMode.valueOf(
commerceCurrency.getRoundingMode());
return new CommerceDiscountValue(
commerceDiscount.getCommerceDiscountId(), discountAmount,
_getDiscountPercentage(discountedAmount, amount, roundingMode),
values);
}
private CommerceDiscountValue _getCommerceDiscountValue(
CommerceOrder commerceOrder, BigDecimal amount,
CommerceContext commerceContext, String discountType)
throws PortalException {
if ((amount == null) || (amount.compareTo(BigDecimal.ZERO) <= 0)) {
return null;
}
List commerceDiscounts =
getOrderCommerceDiscountByHierarchy(
commerceOrder.getCompanyId(),
commerceContext.getCommerceAccount(),
commerceContext.getCommerceChannelId(), discountType);
if (commerceDiscounts.isEmpty()) {
return null;
}
return _getCommerceDiscountValue(
amount, 1, commerceOrder.getCouponCode(), commerceContext,
commerceDiscounts);
}
private BigDecimal _getDiscountAmount(
BigDecimal amount, BigDecimal percentage) {
if (percentage == null) {
return BigDecimal.ZERO;
}
BigDecimal discountedAmount = amount.multiply(percentage);
return discountedAmount.divide(_ONE_HUNDRED);
}
private BigDecimal _getDiscountPercentage(
BigDecimal discountedAmount, BigDecimal amount,
RoundingMode roundingMode) {
double actualPrice = discountedAmount.doubleValue();
double originalPrice = amount.doubleValue();
double percentage = actualPrice / originalPrice;
BigDecimal discountPercentage = new BigDecimal(percentage);
discountPercentage = discountPercentage.multiply(_ONE_HUNDRED);
MathContext mathContext = new MathContext(
discountPercentage.precision(), roundingMode);
return _ONE_HUNDRED.subtract(discountPercentage, mathContext);
}
private boolean _isValidDiscount(
CommerceContext commerceContext, CommerceDiscount commerceDiscount)
throws PortalException {
List commerceDiscountRules =
_commerceDiscountRuleLocalService.getCommerceDiscountRules(
commerceDiscount.getCommerceDiscountId(), QueryUtil.ALL_POS,
QueryUtil.ALL_POS, null);
if (commerceDiscountRules.isEmpty()) {
return true;
}
for (CommerceDiscountRule commerceDiscountRule :
commerceDiscountRules) {
CommerceDiscountRuleType commerceDiscountRuleType =
_commerceDiscountRuleTypeRegistry.getCommerceDiscountRuleType(
commerceDiscountRule.getType());
boolean commerceDiscountRuleTypeEvaluation =
commerceDiscountRuleType.evaluate(
commerceDiscountRule, commerceContext);
if (!commerceDiscountRuleTypeEvaluation &&
commerceDiscount.isRulesConjunction()) {
return false;
}
else if (commerceDiscountRuleTypeEvaluation &&
!commerceDiscount.isRulesConjunction()) {
return true;
}
}
return commerceDiscount.isRulesConjunction();
}
private static final BigDecimal _ONE_HUNDRED = BigDecimal.valueOf(100);
@Reference
private CommerceDiscountRuleLocalService _commerceDiscountRuleLocalService;
@Reference
private CommerceDiscountRuleTypeRegistry _commerceDiscountRuleTypeRegistry;
@Reference
private CommerceMoneyFactory _commerceMoneyFactory;
@Reference
private CPInstanceLocalService _cpInstanceLocalService;
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