购物车添加满M件N折活动支持

shopping-cart-application-service/src/main/java/cn/freemud/enums/ActivityTypeEnum.java

@@ -52,6 +52,10 @@ public enum ActivityTypeEnum {
     TYPE_7(7, "满额赠券"),
     TYPE_8(8, "满N件换购"),
     /**
+     * 满M件N折
+     */
+    TYPE_83(83, "满M件N折"),
+    /**
      * 加价购
      */
     TYPE_81(81, "满额换购"),

shopping-cart-application-service/src/main/java/cn/freemud/enums/ShoppingCartPromotionEnum.java

@@ -28,7 +28,9 @@ public enum ShoppingCartPromotionEnum {
     Material(12, "MaterialPromotionService"),
     // 集点活动类
     GATHER_SPOT(13, "gatherSpotPromotionService"),
-    MEMBER_DISCOUNT_NEw(27, "memberDiscountService");
+    MEMBER_DISCOUNT_NEw(27, "memberDiscountService"),
+    FULL_M_COUNT_N_FOLD(83, "FullMCountNFoldPromotionService"),
+    ;
 
     private Integer type;
     private String msgType;

shopping-cart-application-service/src/main/java/cn/freemud/service/impl/FullMCountNFoldPromotionService.java

+package cn.freemud.service.impl;
+
+import cn.freemud.entities.dto.ActivityCalculationDiscountResponseDto;
+import cn.freemud.entities.dto.UserLoginInfoDto;
+import cn.freemud.entities.dto.activity.ActivityQueryDto;
+import cn.freemud.entities.dto.shoppingCart.ShoppingCartGoodsDto;
+import cn.freemud.entities.vo.*;
+import cn.freemud.enums.ActivityTypeEnum;
+import cn.freemud.service.IPromotionService;
+import org.apache.commons.collections4.CollectionUtils;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+/**
+ * @author Clover.z
+ * @Date 2021/8/18
+ * @Desc 满M件N折活动优惠计算
+ */
+@Service("FullMCountNFoldPromotionService")
+public class FullMCountNFoldPromotionService implements IPromotionService {
+
+    @Override
+    public void updateShoppingCartGoodsDiscount(CouponPromotionVO couponPromotionVO, ActivityQueryDto activityQueryDto, ActivityCalculationDiscountResponseDto.CalculationDiscountResult calculationDiscountResult, List<CartGoods> cartGoodsList, ShoppingCartGoodsResponseVo shoppingCartGoodsResponseVo, UserLoginInfoDto userLoginInfoDto, ShoppingCartInfoRequestVo shoppingCartInfoRequestVo) {
+        if (calculationDiscountResult == null || CollectionUtils.isEmpty(calculationDiscountResult.getDiscounts()))
+            return;
+
+        List<ActivityCalculationDiscountResponseDto.CalculationDiscountResult.Discount> discountList
+                = calculationDiscountResult.getDiscounts().stream().filter(discount -> ActivityTypeEnum.TYPE_83.getCode().equals(discount.getType())).collect(Collectors.toList());
+        if (CollectionUtils.isEmpty(discountList))
+            return;
+
+        // 转换一下结构，方便匹配购物车商品的活动信息
+        Map<String, ActivityCalculationDiscountResponseDto.CalculationDiscountResult.Goods> map = calculationDiscountResult.getGoods().stream()
+                .collect(Collectors.toMap(ActivityCalculationDiscountResponseDto.CalculationDiscountResult.Goods::getCartGoodsUid, Function.identity(), (k1, k2) -> k1));
+        // 匹配购物车行，设置优惠价格
+        cartGoodsList.forEach(cartGoods -> {
+            ActivityCalculationDiscountResponseDto.CalculationDiscountResult.Goods discountGoods = map.get(cartGoods.getCartGoodsUid());
+            if (null != discountGoods && CollectionUtils.isNotEmpty(discountGoods.getDiscounts())) {
+                Long originPrice = cartGoods.getFinalPrice() * cartGoods.getQty();
+                Long discountPrice = 0L;
+                for (ActivityCalculationDiscountResponseDto.CalculationDiscountResult.Goods.GoodsDiscount discount : discountGoods.getDiscounts()) {
+                    discountPrice += discount.getDiscount();
+                }
+                cartGoods.setAmount(originPrice - discountPrice);
+            }
+        });
+    }
+
+    @Override
+    public void updateShoppingCartGoodsApportion(ShoppingCartGoodsResponseVo shoppingCartGoodsResponseVo, ActivityCalculationDiscountResponseDto.CalculationDiscountResult calculationDiscountResult, ShoppingCartGoodsDto shoppingCartGoodsDto, CreateOrderVo.PremiumExchangeActivity premiumExchangeActivity, ShoppingCartInfoRequestVo shoppingCartInfoRequestVo) {
+
+    }
+}

shopping-cart-application-service/src/main/java/cn/freemud/service/impl/ShoppingCartNewServiceImpl.java

@@ -1778,6 +1778,11 @@ public class ShoppingCartNewServiceImpl implements ShoppingCartNewService {
                 twoNDiscountService.updateShoppingCartGoodsDiscount(couponPromotionVO, activityQueryDto, calculationDiscountResult, cartGoodsList, shoppingCartGoodsResponseVo, userLoginInfoDto, shoppingCartInfoRequestVo);
             }
         }
+
+        // 满M件N折活动
+        IPromotionService fullMCountNFoldService = PromotionFactory.getPromotionService(ShoppingCartPromotionEnum.FULL_M_COUNT_N_FOLD);
+        fullMCountNFoldService.updateShoppingCartGoodsDiscount(couponPromotionVO, activityQueryDto, calculationDiscountResult, cartGoodsList, shoppingCartGoodsResponseVo, userLoginInfoDto, shoppingCartInfoRequestVo);
+
         // 买赠活动
         BuyAndGiftsPromotionService buyAndGiftsPromotionService = (BuyAndGiftsPromotionService) PromotionFactory.getPromotionService(ShoppingCartPromotionEnum.BUY_GIFTS);
         buyAndGiftsPromotionService.updateShoppingCartGoodsDiscount(couponPromotionVO, activityQueryDto, calculationDiscountResult, cartGoodsList, shoppingCartGoodsResponseVo, userLoginInfoDto, shoppingCartInfoRequestVo);