优惠券 使用数量

cash-service/account-service/src/main/java/com/czg/service/account/service/impl/ShopCouponServiceImpl.java

@@ -28,6 +28,7 @@ import com.github.pagehelper.PageInfo;
 import com.mybatisflex.core.paginate.Page;
 import com.mybatisflex.spring.service.impl.ServiceImpl;
 import jakarta.annotation.Resource;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.dubbo.config.annotation.DubboReference;
 import org.apache.dubbo.config.annotation.DubboService;
 
@@ -35,6 +36,7 @@ import java.math.BigDecimal;
 import java.time.LocalTime;
 import java.time.format.DateTimeFormatter;
 import java.util.*;
+import java.util.stream.Collectors;
 
 /**
  * 优惠券 服务层实现。
@@ -42,6 +44,7 @@ import java.util.*;
  * @author ww
  * @since 2025-02-17
  */
+@Slf4j
 @DubboService
 public class ShopCouponServiceImpl extends ServiceImpl<ShopCouponMapper, ShopCoupon> implements ShopCouponService {
 
@@ -144,6 +147,24 @@ public class ShopCouponServiceImpl extends ServiceImpl<ShopCouponMapper, ShopCou
 
     @Override
     public Boolean use(List<Long> ids, Long shopUserId, Long orderId) {
+        List<ShopActivateCouponRecord> records = couponRecordService.listByIds(ids);
+        if (records.isEmpty()) {
+            log.error("优惠券使用失败，订单Id:{}", orderId);
+            return false;
+        }
+        // 使用流来统计 couponId 出现的次数
+        Map<Long, Long> couponIdCountMap = records.stream()
+                .collect(Collectors.groupingBy(ShopActivateCouponRecord::getCouponId,
+                        Collectors.counting()
+                ));
+        couponIdCountMap.forEach((couponId, count) -> {
+            ShopCoupon tbShopCoupon = getById(couponId);
+            tbShopCoupon.setUseNumber(tbShopCoupon.getUseNumber() + count.intValue());
+            ShopCoupon coupon1 = new ShopCoupon();
+            coupon1.setId(couponId);
+            coupon1.setUseNumber(tbShopCoupon.getUseNumber());
+            updateById(coupon1);
+        });
         return couponRecordService.updateChain()
                 .set(ShopActivateCouponRecord::getStatus, 1)
                 .set(ShopActivateCouponRecord::getTargetId, orderId)