price：完成限时折扣的价格计算~

yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/dal/dataobject/discount/DiscountProductDO.java

@@ -31,6 +31,12 @@ public class DiscountProductDO extends BaseDO {
      * 关联 {@link DiscountActivityDO#getId()}
      */
     private Long activityId;
+    /**
+     * 限时折扣活动的名字
+     *
+     * 冗余 {@link DiscountActivityDO#getName()}
+     */
+    private String activityName;
     /**
      * 商品 SPU 编号
      *

yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/service/price/PriceServiceImpl.java

@@ -107,33 +107,35 @@ public class PriceServiceImpl implements PriceService {
             Integer memberPrice = memberDiscount != null ? (int) (orderItem.getPayPrice() * memberDiscount / 100) : null;
             Integer promotionPrice = discountProduct != null ? discountProduct.getPromotionPrice() * orderItem.getCount() : null;
             if (memberPrice == null) {
-
+                calculatePriceByDiscountActivity(priceCalculate, orderItem, discountProduct, promotionPrice);
             } else if (promotionPrice == null) {
-                calculatePriceByMemberDiscount(orderItem, memberDiscount, memberPrice, priceCalculate);
+                calculatePriceByMemberDiscount(priceCalculate, orderItem, memberPrice);
             } else if (memberPrice < promotionPrice) {
-
+                calculatePriceByDiscountActivity(priceCalculate, orderItem, discountProduct, promotionPrice);
             } else {
-                calculatePriceByMemberDiscount(orderItem, memberDiscount, memberPrice, priceCalculate);
+                calculatePriceByMemberDiscount(priceCalculate, orderItem, memberPrice);
             }
         });
     }
 
-    private void calculatePriceByMemberDiscount(PriceCalculateRespDTO.OrderItem orderItem,
-                                                Double memberDiscount, Integer memberPrice,
-                                                PriceCalculateRespDTO priceCalculate) {
+    private void calculatePriceByMemberDiscount(PriceCalculateRespDTO priceCalculate, PriceCalculateRespDTO.OrderItem orderItem,
+                                                Integer memberPrice) {
         // 记录优惠明细
-        addPromotion(priceCalculate, orderItem, null,
-                PromotionTypeEnum.MEMBER.getName(),
+        addPromotion(priceCalculate, orderItem, null, PromotionTypeEnum.MEMBER.getName(),
                 PromotionTypeEnum.MEMBER.getType(), PromotionLevelEnum.SKU.getLevel(), memberPrice,
                 true, StrUtil.format("会员折扣：省 {} 元", formatPrice(orderItem.getPayPrice() - memberPrice)));
         // 修改 SKU 的优惠
         modifyOrderItemPayPrice(orderItem, memberPrice, priceCalculate);
     }
 
-    private void calculatePriceByDiscountActivity(PriceCalculateRespDTO.OrderItem orderItem,
-                                                  DiscountProductDO discountProduct, Integer promotionPrice,
-                                                  PriceCalculateRespDTO priceCalculate) {
-
+    private void calculatePriceByDiscountActivity(PriceCalculateRespDTO priceCalculate, PriceCalculateRespDTO.OrderItem orderItem,
+                                                  DiscountProductDO discountProduct, Integer promotionPrice) {
+        // 记录优惠明细
+        addPromotion(priceCalculate, orderItem, discountProduct.getActivityId(), discountProduct.getActivityName(),
+                PromotionTypeEnum.DISCOUNT_ACTIVITY.getType(), PromotionLevelEnum.SKU.getLevel(), promotionPrice,
+                true, StrUtil.format("限时折扣：省 {} 元", formatPrice(orderItem.getPayPrice() - promotionPrice)));
+        // 修改 SKU 的优惠
+        modifyOrderItemPayPrice(orderItem, promotionPrice, priceCalculate);
     }
 
     private void addPromotion(PriceCalculateRespDTO priceCalculate, PriceCalculateRespDTO.OrderItem orderItem,

yudao-module-mall/yudao-module-market-biz/src/test/java/cn/iocoder/yudao/module/market/service/price/PriceServiceTest.java

@@ -1,9 +1,11 @@
 package cn.iocoder.yudao.module.market.service.price;
 
+import cn.hutool.core.map.MapUtil;
 import cn.iocoder.yudao.framework.common.util.collection.SetUtils;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
 import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateReqDTO;
 import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateRespDTO;
+import cn.iocoder.yudao.module.market.dal.dataobject.discount.DiscountProductDO;
 import cn.iocoder.yudao.module.market.enums.common.PromotionLevelEnum;
 import cn.iocoder.yudao.module.market.enums.common.PromotionTypeEnum;
 import cn.iocoder.yudao.module.market.service.discount.DiscountService;
@@ -13,7 +15,9 @@ import org.junit.jupiter.api.Test;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 
+import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomLongId;
 import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
+import static java.util.Arrays.asList;
 import static java.util.Collections.singletonList;
 import static org.junit.jupiter.api.Assertions.*;
 import static org.mockito.ArgumentMatchers.eq;
@@ -55,8 +59,8 @@ public class PriceServiceTest extends BaseMockitoUnitTest {
         assertEquals(order.getPayPrice(), 180);
         assertNull(order.getCouponId());
         // 断言 OrderItem 部分
-        PriceCalculateRespDTO.OrderItem orderItem = order.getItems().get(0);
         assertEquals(order.getItems().size(), 1);
+        PriceCalculateRespDTO.OrderItem orderItem = order.getItems().get(0);
         assertEquals(orderItem.getSkuId(), 10L);
         assertEquals(orderItem.getCount(), 2);
         assertEquals(orderItem.getOriginalPrice(), 200);
@@ -66,8 +70,8 @@ public class PriceServiceTest extends BaseMockitoUnitTest {
         assertEquals(orderItem.getOrderPartPrice(), 0);
         assertEquals(orderItem.getOrderDividePrice(), 180);
         // 断言 Promotion 部分
-        PriceCalculateRespDTO.Promotion promotion = priceCalculate.getPromotions().get(0);
         assertEquals(priceCalculate.getPromotions().size(), 1);
+        PriceCalculateRespDTO.Promotion promotion = priceCalculate.getPromotions().get(0);
         assertNull(promotion.getId());
         assertEquals(promotion.getName(), "会员折扣");
         assertEquals(promotion.getType(), PromotionTypeEnum.MEMBER.getType());
@@ -83,4 +87,84 @@ public class PriceServiceTest extends BaseMockitoUnitTest {
         assertEquals(promotionItem.getDiscountPrice(), 20);
     }
 
+    @Test
+    public void testCalculatePrice_discountActivity() {
+        // 准备参数
+        PriceCalculateReqDTO calculateReqDTO = new PriceCalculateReqDTO().setUserId(randomLongId())
+                .setItems(asList(new PriceCalculateReqDTO.Item().setSkuId(10L).setCount(2),
+                        new PriceCalculateReqDTO.Item().setSkuId(20L).setCount(3)));
+        // mock 方法(商品 SKU 信息)
+        ProductSkuRespDTO productSku01 = randomPojo(ProductSkuRespDTO.class, o -> o.setId(10L).setPrice(100));
+        ProductSkuRespDTO productSku02 = randomPojo(ProductSkuRespDTO.class, o -> o.setId(20L).setPrice(50));
+        when(productSkuApi.getSkuList(eq(SetUtils.asSet(10L, 20L)))).thenReturn(asList(productSku01, productSku02));
+        // mock 方法（限时折扣 DiscountActivity 信息）
+        DiscountProductDO discountProduct01 = randomPojo(DiscountProductDO.class, o -> o.setActivityId(1000L).setActivityName("活动 1000 号")
+                .setSkuId(10L).setPromotionPrice(80));
+        DiscountProductDO discountProduct02 = randomPojo(DiscountProductDO.class, o -> o.setActivityId(2000L).setActivityName("活动 2000 号")
+                .setSkuId(20L).setPromotionPrice(40));
+        when(discountService.getMatchDiscountProducts(eq(SetUtils.asSet(10L, 20L)))).thenReturn(
+                MapUtil.builder(10L, discountProduct01).put(20L, discountProduct02).map());
+
+        // 调用
+        PriceCalculateRespDTO priceCalculate = priceService.calculatePrice(calculateReqDTO);
+        // 断言 Order 部分
+        PriceCalculateRespDTO.Order order = priceCalculate.getOrder();
+        assertEquals(order.getOriginalPrice(), 350);
+        assertEquals(order.getDiscountPrice(), 0);
+        assertEquals(order.getPointPrice(), 0);
+        assertEquals(order.getDeliveryPrice(), 0);
+        assertEquals(order.getPayPrice(), 280);
+        assertNull(order.getCouponId());
+        // 断言 OrderItem 部分
+        assertEquals(order.getItems().size(), 2);
+        PriceCalculateRespDTO.OrderItem orderItem01 = order.getItems().get(0);
+        assertEquals(orderItem01.getSkuId(), 10L);
+        assertEquals(orderItem01.getCount(), 2);
+        assertEquals(orderItem01.getOriginalPrice(), 200);
+        assertEquals(orderItem01.getOriginalUnitPrice(), 100);
+        assertEquals(orderItem01.getDiscountPrice(), 40);
+        assertEquals(orderItem01.getPayPrice(), 160);
+        assertEquals(orderItem01.getOrderPartPrice(), 0);
+        assertEquals(orderItem01.getOrderDividePrice(), 160);
+        PriceCalculateRespDTO.OrderItem orderItem02 = order.getItems().get(1);
+        assertEquals(orderItem02.getSkuId(), 20L);
+        assertEquals(orderItem02.getCount(), 3);
+        assertEquals(orderItem02.getOriginalPrice(), 150);
+        assertEquals(orderItem02.getOriginalUnitPrice(), 50);
+        assertEquals(orderItem02.getDiscountPrice(), 30);
+        assertEquals(orderItem02.getPayPrice(), 120);
+        assertEquals(orderItem02.getOrderPartPrice(), 0);
+        assertEquals(orderItem02.getOrderDividePrice(), 120);
+        // 断言 Promotion 部分
+        assertEquals(priceCalculate.getPromotions().size(), 2);
+        PriceCalculateRespDTO.Promotion promotion01 = priceCalculate.getPromotions().get(0);
+        assertEquals(promotion01.getId(), 1000L);
+        assertEquals(promotion01.getName(), "活动 1000 号");
+        assertEquals(promotion01.getType(), PromotionTypeEnum.DISCOUNT_ACTIVITY.getType());
+        assertEquals(promotion01.getLevel(), PromotionLevelEnum.SKU.getLevel());
+        assertEquals(promotion01.getOriginalPrice(), 200);
+        assertEquals(promotion01.getDiscountPrice(), 40);
+        assertTrue(promotion01.getMeet());
+        assertEquals(promotion01.getMeetTip(), "限时折扣：省 0.40 元");
+        PriceCalculateRespDTO.PromotionItem promotionItem01 = promotion01.getItems().get(0);
+        assertEquals(promotion01.getItems().size(), 1);
+        assertEquals(promotionItem01.getSkuId(), 10L);
+        assertEquals(promotionItem01.getOriginalPrice(), 200);
+        assertEquals(promotionItem01.getDiscountPrice(), 40);
+        PriceCalculateRespDTO.Promotion promotion02 = priceCalculate.getPromotions().get(1);
+        assertEquals(promotion02.getId(), 2000L);
+        assertEquals(promotion02.getName(), "活动 2000 号");
+        assertEquals(promotion02.getType(), PromotionTypeEnum.DISCOUNT_ACTIVITY.getType());
+        assertEquals(promotion02.getLevel(), PromotionLevelEnum.SKU.getLevel());
+        assertEquals(promotion02.getOriginalPrice(), 150);
+        assertEquals(promotion02.getDiscountPrice(), 30);
+        assertTrue(promotion02.getMeet());
+        assertEquals(promotion02.getMeetTip(), "限时折扣：省 0.30 元");
+        PriceCalculateRespDTO.PromotionItem promotionItem02 = promotion02.getItems().get(0);
+        assertEquals(promotion02.getItems().size(), 1);
+        assertEquals(promotionItem02.getSkuId(), 20L);
+        assertEquals(promotionItem02.getOriginalPrice(), 150);
+        assertEquals(promotionItem02.getDiscountPrice(), 30);
+    }
+
 }