秒回活动：订单金额计算初步设计

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/convert/order/TradeOrderConvert.java

@@ -216,11 +216,11 @@ public interface TradeOrderConvert {
     })
     ProductCommentCreateReqDTO convert04(AppTradeOrderItemCommentCreateReqVO createReqVO, TradeOrderItemDO tradeOrderItemDO);
 
+    TradePriceCalculateReqBO convert(AppTradeOrderSettlementReqVO settlementReqVO);
+
     default TradePriceCalculateReqBO convert(Long userId, AppTradeOrderSettlementReqVO settlementReqVO,
                                              List<CartDO> cartList) {
-        TradePriceCalculateReqBO reqBO = new TradePriceCalculateReqBO();
-        reqBO.setUserId(userId).setCouponId(settlementReqVO.getCouponId()).setAddressId(settlementReqVO.getAddressId())
-                .setItems(new ArrayList<>(settlementReqVO.getItems().size()));
+        TradePriceCalculateReqBO reqBO = convert(settlementReqVO).setUserId(userId).setItems(new ArrayList<>(settlementReqVO.getItems().size()));
         // 商品项的构建
         Map<Long, CartDO> cartMap = convertMap(cartList, CartDO::getId);
         for (AppTradeOrderSettlementReqVO.Item item : settlementReqVO.getItems()) {

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

@@ -2,6 +2,7 @@ package cn.iocoder.yudao.module.trade.service.price.bo;
 
 import cn.iocoder.yudao.module.trade.enums.delivery.DeliveryTypeEnum;
 import cn.iocoder.yudao.module.trade.enums.order.TradeOrderTypeEnum;
+import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 import javax.validation.Valid;
@@ -52,6 +53,23 @@ public class TradePriceCalculateReqBO {
      */
     private Integer deliveryType;
 
+    // ========== 秒杀活动相关字段 ==========
+    @Schema(description = "秒杀活动编号", example = "1024")
+    private Long seckillActivityId;
+
+    // ========== 拼团活动相关字段 ==========
+    // TODO @puhui999：是不是拼团记录的编号哈？
+    @Schema(description = "拼团活动编号", example = "1024")
+    private Long combinationActivityId;
+
+    @Schema(description = "拼团团长编号", example = "2048")
+    private Long combinationHeadId;
+
+    // ========== 砍价活动相关字段 ==========
+    // TODO @puhui999：是不是砍价记录的编号哈？
+    @Schema(description = "砍价活动编号", example = "123")
+    private Long bargainActivityId;
+
     /**
      * 商品 SKU 数组
      */

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

@@ -84,9 +84,19 @@ public class TradePriceCalculateRespBO {
          * 对应 taobao 的 trade.point_fee 字段
          */
         private Integer pointPrice;
+        /**
+         * 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}
@@ -153,9 +163,16 @@ public class TradePriceCalculateRespBO {
          * 对应 taobao 的 trade.point_fee 字段
          */
         private Integer pointPrice;
+        /**
+         * 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

@@ -84,6 +84,9 @@ 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

@@ -0,0 +1,47 @@
+package cn.iocoder.yudao.module.trade.service.price.calculator;
+
+import cn.hutool.core.util.ObjectUtil;
+import cn.iocoder.yudao.module.promotion.api.seckill.SeckillActivityApi;
+import cn.iocoder.yudao.module.promotion.api.seckill.dto.SeckillActivityProductRespDTO;
+import cn.iocoder.yudao.module.trade.enums.order.TradeOrderTypeEnum;
+import cn.iocoder.yudao.module.trade.service.price.bo.TradePriceCalculateReqBO;
+import cn.iocoder.yudao.module.trade.service.price.bo.TradePriceCalculateRespBO;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.Resource;
+import java.util.List;
+import java.util.Map;
+
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertMap;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
+
+/**
+ * 秒杀活动的 {@link TradePriceCalculator} 实现类
+ *
+ * @author HUIHUI
+ */
+@Component
+@Order(TradePriceCalculator.ORDER_DISCOUNT_ACTIVITY)
+public class TradeSeckillActivityPriceCalculator implements TradePriceCalculator {
+
+    @Resource
+    private SeckillActivityApi activityApi;
+
+    @Override
+    public void calculate(TradePriceCalculateReqBO param, TradePriceCalculateRespBO result) {
+        // 1、判断订单类型和是否具有秒杀活动编号
+        if (ObjectUtil.notEqual(param.getType(), TradeOrderTypeEnum.SECKILL.getType()) && param.getSeckillActivityId() == null) {
+            return;
+        }
+        // 2、获取秒杀活动商品信息
+        List<SeckillActivityProductRespDTO> productList = activityApi.getSeckillActivityProductList(param.getSeckillActivityId(), convertSet(param.getItems(),
+                TradePriceCalculateReqBO.Item::getSkuId));
+        Map<Long, SeckillActivityProductRespDTO> productMap = convertMap(productList, SeckillActivityProductRespDTO::getSkuId);
+        result.getItems().forEach(item -> {
+            SeckillActivityProductRespDTO product = productMap.get(item.getSkuId());
+            item.setActivityPrice(product.getSeckillPrice()); // 设置活动金额
+        });
+    }
+
+}