【功能完善】商城: APP 完善积分商城活动下单

yudao-module-mall/yudao-module-trade-biz/src/main/java/cn/iocoder/yudao/module/trade/dal/dataobject/order/TradeOrderDO.java

@@ -353,4 +353,11 @@ public class TradeOrderDO extends BaseDO {
      */
     private Long combinationRecordId;
 
+    /**
+     * 积分商城活动的编号
+     *
+     * 关联 PointActivityDO 的 id 字段
+     */
+    private Long pointActivityId;
+
 }

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

@@ -0,0 +1,64 @@
+package cn.iocoder.yudao.module.trade.service.order.handler;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.lang.Assert;
+import cn.iocoder.yudao.module.promotion.api.point.PointActivityApi;
+import cn.iocoder.yudao.module.trade.dal.dataobject.order.TradeOrderDO;
+import cn.iocoder.yudao.module.trade.dal.dataobject.order.TradeOrderItemDO;
+import cn.iocoder.yudao.module.trade.enums.order.TradeOrderTypeEnum;
+import jakarta.annotation.Resource;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+
+/**
+ * 积分商城活动订单的 {@link TradeOrderHandler} 实现类
+ *
+ * @author HUIHUI
+ */
+@Component
+public class TradePointOrderHandler implements TradeOrderHandler {
+
+    @Resource
+    private PointActivityApi pointActivityApi;
+
+    @Override
+    public void beforeOrderCreate(TradeOrderDO order, List<TradeOrderItemDO> orderItems) {
+        if (!TradeOrderTypeEnum.isPoint(order.getType())) {
+            return;
+        }
+        // 明确校验一下
+        Assert.isTrue(orderItems.size() == 1, "积分商城活动兑换商品兑换时，只允许选择一个商品");
+
+        // 扣减积分商城活动的库存
+        pointActivityApi.updatePointStockDecr(order.getPointActivityId(),
+                orderItems.get(0).getSkuId(), orderItems.get(0).getCount());
+    }
+
+    @Override
+    public void afterCancelOrder(TradeOrderDO order, List<TradeOrderItemDO> orderItems) {
+        if (!TradeOrderTypeEnum.isPoint(order.getType())) {
+            return;
+        }
+        // 明确校验一下
+        Assert.isTrue(orderItems.size() == 1, "积分商城活动兑换商品兑换时，只允许选择一个商品");
+
+        // 售后的订单项，已经在 afterCancelOrderItem 回滚库存，所以这里不需要重复回滚
+        orderItems = filterOrderItemListByNoneAfterSale(orderItems);
+        if (CollUtil.isEmpty(orderItems)) {
+            return;
+        }
+        afterCancelOrderItem(order, orderItems.get(0));
+    }
+
+    @Override
+    public void afterCancelOrderItem(TradeOrderDO order, TradeOrderItemDO orderItem) {
+        if (!TradeOrderTypeEnum.isPoint(order.getType())) {
+            return;
+        }
+        // 恢复积分商城活动的库存
+        pointActivityApi.updatePointStockIncr(order.getPointActivityId(),
+                orderItem.getSkuId(), orderItem.getCount());
+    }
+
+}

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

@@ -63,15 +63,18 @@ public class TradePointActivityPriceCalculator implements TradePriceCalculator {
         // 3.1 记录优惠明细
         int discountPrice = orderItem.getPayPrice(); // 情况一：单使用积分兑换
         Assert.isTrue(activity.getPoint() >= 1, "积分商城商品兑换积分必须大于 1");
-        result.setUsePoint(activity.getPoint());
+        result.setUsePoint(activity.getPoint() * orderItem.getCount());
+        orderItem.setUsePoint(activity.getPoint() * orderItem.getCount());
         if (activity.getPrice() != null && activity.getPrice() > 0) { // 情况二：积分 + 金额
             discountPrice = orderItem.getPayPrice() - activity.getPrice() * orderItem.getCount();
         }
+        // 3.2 记录优惠明细
         TradePriceCalculatorHelper.addPromotion(result, orderItem,
                 param.getPointActivityId(), "积分商城活动", PromotionTypeEnum.POINT.getType(),
                 StrUtil.format("积分商城活动：省 {} 元", TradePriceCalculatorHelper.formatPrice(discountPrice)),
                 discountPrice);
-        // 3.2 更新 SKU 优惠金额
+
+        // 3.3 更新 SKU 优惠金额
         orderItem.setDiscountPrice(orderItem.getDiscountPrice() + discountPrice);
         TradePriceCalculatorHelper.recountPayPrice(orderItem);
         TradePriceCalculatorHelper.recountAllPrice(result);