code review：拼团、砍价活动

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/combination/CombinationRecordServiceImpl.java

@@ -102,6 +102,7 @@ public class CombinationRecordServiceImpl implements CombinationRecordService {
         return recordDO;
     }
 
+    // TODO @芋艿：在详细预览下；
     @Override
     public void validateCombinationRecord(Long activityId, Long userId, Long skuId, Integer count) {
         // 1.1 校验拼团活动是否存在
@@ -132,12 +133,14 @@ public class CombinationRecordServiceImpl implements CombinationRecordService {
         }
         // 5.1、查询关联的订单是否已经支付
         // 当前 activityId 已经有未支付的订单，不允许在发起新的；要么支付，要么去掉先；
+        // TODO 芋艿：看看是不是可以删除掉；
         Integer orderStatus = tradeOrderApi.getOrderStatus(record.getOrderId());
         if (ObjectUtil.equal(orderStatus, TradeOrderStatusEnum.UNPAID.getStatus())) {
             throw exception(COMBINATION_RECORD_FAILED_ORDER_STATUS_UNPAID);
         }
     }
 
+    // TODO 芋艿：在详细 review 下；
     @Override
     @Transactional(rollbackFor = Exception.class)
     public void createCombinationRecord(CombinationRecordCreateReqDTO reqDTO) {

yudao-module-mall/yudao-module-trade-api/src/main/java/cn/iocoder/yudao/module/trade/api/order/TradeOrderApi.java

@@ -7,6 +7,7 @@ package cn.iocoder.yudao.module.trade.api.order;
  */
 public interface TradeOrderApi {
 
+    // TODO 芋艿：看看是不是可以删除掉；
     /**
      * 获取订单状态
      *

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/controller/app/order/vo/AppTradeOrderSettlementReqVO.java

@@ -1,5 +1,6 @@
 package cn.iocoder.yudao.module.trade.controller.app.order.vo;
 
+import cn.hutool.core.util.ObjUtil;
 import cn.iocoder.yudao.framework.common.validation.InEnum;
 import cn.iocoder.yudao.framework.common.validation.Mobile;
 import cn.iocoder.yudao.module.trade.enums.delivery.DeliveryTypeEnum;
@@ -67,7 +68,7 @@ public class AppTradeOrderSettlementReqVO {
     @JsonIgnore
     public boolean isValidActivityItems() {
         // 校验是否是活动订单
-        if (seckillActivityId == null && combinationActivityId == null && combinationHeadId == null) {
+        if (ObjUtil.isAllEmpty(seckillActivityId, combinationActivityId, combinationHeadId)) {
             return true;
         }
         // 校验订单项是否超出

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/handler/TradeBargainHandler.java

@@ -14,7 +14,7 @@ import javax.annotation.Resource;
  * @author HUIHUI
  */
 @Component
-public class TradeBargainHandler extends TradeOrderDefaultHandler {
+public class TradeBargainHandler implements TradeOrderHandler {
 
     @Resource
     private BargainActivityApi bargainActivityApi;

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/handler/TradeCombinationHandler.java

@@ -17,7 +17,7 @@ import javax.annotation.Resource;
  * @author HUIHUI
  */
 @Component
-public class TradeCombinationHandler extends TradeOrderDefaultHandler {
+public class TradeCombinationHandler implements TradeOrderHandler {
 
     @Resource
     private CombinationRecordApi combinationRecordApi;

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/handler/TradeOrderDefaultHandler.java

@@ -1,34 +0,0 @@
-package cn.iocoder.yudao.module.trade.service.order.handler;
-
-import cn.iocoder.yudao.module.trade.service.order.bo.TradeAfterOrderCreateReqBO;
-import cn.iocoder.yudao.module.trade.service.order.bo.TradeAfterPayOrderReqBO;
-import cn.iocoder.yudao.module.trade.service.order.bo.TradeBeforeOrderCreateReqBO;
-
-/**
- * 订单活动特殊逻辑处理器 handler 默认抽象实现类
- *
- * @author HUIHUI
- */
-public abstract class TradeOrderDefaultHandler implements TradeOrderHandler {
-
-    @Override
-    public void beforeOrderCreate(TradeBeforeOrderCreateReqBO reqBO) {
-
-    }
-
-    @Override
-    public void afterOrderCreate(TradeAfterOrderCreateReqBO reqBO) {
-
-    }
-
-    @Override
-    public void afterPayOrder(TradeAfterPayOrderReqBO reqBO) {
-
-    }
-
-    @Override
-    public void cancelOrder() {
-
-    }
-
-}

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/handler/TradeOrderHandler.java

@@ -17,25 +17,25 @@ public interface TradeOrderHandler {
      *
      * @param reqBO 请求
      */
-    void beforeOrderCreate(TradeBeforeOrderCreateReqBO reqBO);
+    default void beforeOrderCreate(TradeBeforeOrderCreateReqBO reqBO) {}
 
     /**
      * 订单创建后
      *
      * @param reqBO 请求
      */
-    void afterOrderCreate(TradeAfterOrderCreateReqBO reqBO);
+    default void afterOrderCreate(TradeAfterOrderCreateReqBO reqBO) {}
 
     /**
      * 支付订单后
      *
      * @param reqBO 请求
      */
-    void afterPayOrder(TradeAfterPayOrderReqBO reqBO);
+    default void afterPayOrder(TradeAfterPayOrderReqBO reqBO) {}
 
     /**
      * 订单取消
      */
-    void cancelOrder();
+    default void cancelOrder() {}
 
 }

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/order/handler/TradeSeckillHandler.java

@@ -14,7 +14,7 @@ import javax.annotation.Resource;
  * @author HUIHUI
  */
 @Component
-public class TradeSeckillHandler extends TradeOrderDefaultHandler {
+public class TradeSeckillHandler implements TradeOrderHandler {
 
     @Resource
     private SeckillActivityApi seckillActivityApi;

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/price/bo/TradePriceCalculateRespBO.java

@@ -98,19 +98,9 @@ public class TradePriceCalculateRespBO {
          * VIP 减免金额，单位：分
          */
         private Integer vipPrice;
-        /**
-         * 秒杀、拼团、砍价活动商品的总金额，单位：分
-         *
-         * 基于 {@link OrderItem#getActivityPrice()} ()} * {@link OrderItem#getCount()} 求和
-         */
-        private Integer activityPrice;
         /**
          * 最终购买金额（总），单位：分
          *
-         * ==========活动情况===========
-         * = {@link #activityPrice}
-         * + {@link #deliveryPrice}
-         * ==========正常情况===========
          * = {@link #totalPrice}
          * - {@link #couponPrice}
          * - {@link #pointPrice}
@@ -186,16 +176,9 @@ public class TradePriceCalculateRespBO {
          * VIP 减免金额，单位：分
          */
         private Integer vipPrice;
-        /**
-         * 秒杀、拼团、砍价活动商品的金额，单位：分
-         */
-        private Integer activityPrice;
         /**
          * 应付金额（总），单位：分
-         * ==========活动情况===========
+         *
-         * = {@link #activityPrice} * {@link #count}
-         * + {@link #deliveryPrice}
-         * ==========正常情况===========
          * = {@link #price} * {@link #count}
          * - {@link #couponPrice}
          * - {@link #pointPrice}

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/price/calculator/TradePriceCalculatorHelper.java

@@ -105,9 +105,6 @@ public class TradePriceCalculatorHelper {
             if (!item.getSelected()) {
                 return;
             }
-            // TODO puhui: 需要在这里计算活动的价格
-            // ========== 一、活动情况 ==========
-            // ========== 二、正常情况 ==========
             price.setTotalPrice(price.getTotalPrice() + item.getPrice() * item.getCount());
             price.setDiscountPrice(price.getDiscountPrice() + item.getDiscountPrice());
             price.setDeliveryPrice(price.getDeliveryPrice() + item.getDeliveryPrice());

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/service/price/calculator/TradeSeckillActivityPriceCalculator.java

@@ -46,7 +46,7 @@ public class TradeSeckillActivityPriceCalculator implements TradePriceCalculator
                 orderItem.getSkuId(), orderItem.getCount());
 
         // 3.1 记录优惠明细
-        Integer discountPrice = orderItem.getPayPrice() - seckillActivity.getSeckillPrice();
+        Integer discountPrice = orderItem.getPayPrice() - seckillActivity.getSeckillPrice() * orderItem.getCount();
         TradePriceCalculatorHelper.addPromotion(result, orderItem,
                 param.getSeckillActivityId(), seckillActivity.getName(), PromotionTypeEnum.SECKILL_ACTIVITY.getType(),
                 StrUtil.format("秒杀活动：省 {} 元", TradePriceCalculatorHelper.formatPrice(discountPrice)),