新增 检测优惠卷是否全部发放完毕

api/service/coupon.go

@@ -519,7 +519,7 @@ func (r *CouponService) GrantSystemCoupon(couponId, adminUserId int64, req reque
 	}
 
 	// 检测优惠卷可发放数量
-	if req.TotalQuantity >= remainingQuantity {
+	if req.TotalQuantity > remainingQuantity {
 		return false, errors.New("优惠卷数量不足,无法发放")
 	}
 
@@ -588,6 +588,25 @@ func (r *CouponService) GrantSystemCoupon(couponId, adminUserId int64, req reque
 		}
 	}()
 
+	// 增加优惠卷发放数量
+	err = couponDao.Inc(tx, couponId, "coupon_take_count", req.SingleQuantity)
+	if err != nil {
+		tx.Rollback()
+		return false, errors.New("发放失败")
+	}
+
+	// 检测优惠卷是否全部发放完毕
+	if (req.TotalQuantity - remainingQuantity) == 0 {
+		maps := make(map[string]interface{})
+		maps["coupon_status"] = 3
+		err := couponDao.EditCouponById(tx, coupon.CouponId, maps)
+		if err != nil {
+			tx.Rollback()
+			return false, errors.New("发放失败")
+		}
+	}
+
+	// 发放优惠卷
 	for i := 0; i < req.SingleQuantity; i++ {
 		// 添加用户优惠卷表
 		UserCouponModel := &model.UserCoupon{
@@ -614,13 +633,6 @@ func (r *CouponService) GrantSystemCoupon(couponId, adminUserId int64, req reque
 			return false, errors.New("发放失败")
 		}
 
-		// 增加优惠卷发放数量
-		err = couponDao.Inc(tx, couponId, "coupon_take_count", 1)
-		if err != nil {
-			tx.Rollback()
-			return false, errors.New("发放失败")
-		}
-
 		// 添加弹窗表
 		if coupon.IsPopup == 1 {
 			popupModel := &model.Popup{