feat(pricing): 添加优惠券配置中的申领数量和用户申领限制字段

- 在 PriceCouponConfigMapper 中新增 claimed_quantity 和 user_claim_limit 字段映射
- 更新 INSERT 语句以包含新的申领相关字段
- 修改 insertCoupon 方法以支持优惠券申领数量控制功能

src/main/java/com/ycwl/basic/pricing/mapper/PriceCouponConfigMapper.java

@@ -17,19 +17,19 @@ import java.util.List;
 public interface PriceCouponConfigMapper extends BaseMapper<PriceCouponConfig> {
     
     /**
-     * 查询有效的优惠券配置
+     * 查询有效的优惠券配置（可领取的）
      */
     @Select("SELECT * FROM price_coupon_config WHERE is_active = 1 " +
             "AND valid_from <= NOW() AND valid_until > NOW() " +
-            "AND used_quantity < total_quantity")
+            "AND (total_quantity IS NULL OR total_quantity <= 0 OR COALESCE(claimed_quantity, 0) < total_quantity)")
     List<PriceCouponConfig> selectValidCoupons();
-    
+
     /**
-     * 根据ID查询优惠券（包括使用数量检查）
+     * 根据ID查询优惠券（包括库存检查）
      */
     @Select("SELECT * FROM price_coupon_config WHERE id = #{couponId} " +
             "AND is_active = 1 AND valid_from <= NOW() AND valid_until > NOW() " +
-            "AND used_quantity < total_quantity")
+            "AND (total_quantity IS NULL OR total_quantity <= 0 OR COALESCE(claimed_quantity, 0) < total_quantity)")
     PriceCouponConfig selectValidCouponById(Long couponId);
     
     /**
@@ -51,10 +51,12 @@ public interface PriceCouponConfigMapper extends BaseMapper<PriceCouponConfig> {
      * 插入优惠券配置
      */
     @Insert("INSERT INTO price_coupon_config (coupon_name, coupon_type, discount_value, min_amount, " +
-            "max_discount, applicable_products, required_attribute_keys, total_quantity, used_quantity, valid_from, valid_until, " +
+            "max_discount, applicable_products, required_attribute_keys, total_quantity, used_quantity, " +
+            "claimed_quantity, user_claim_limit, valid_from, valid_until, " +
             "is_active, scenic_id, create_time, update_time) VALUES " +
             "(#{couponName}, #{couponType}, #{discountValue}, #{minAmount}, #{maxDiscount}, " +
-            "#{applicableProducts}, #{requiredAttributeKeys}, #{totalQuantity}, #{usedQuantity}, #{validFrom}, #{validUntil}, " +
+            "#{applicableProducts}, #{requiredAttributeKeys}, #{totalQuantity}, #{usedQuantity}, " +
+            "#{claimedQuantity}, #{userClaimLimit}, #{validFrom}, #{validUntil}, " +
             "#{isActive}, #{scenicId}, NOW(), NOW())")
     int insertCoupon(PriceCouponConfig coupon);
     
@@ -63,7 +65,8 @@ public interface PriceCouponConfigMapper extends BaseMapper<PriceCouponConfig> {
      */
     @Update("UPDATE price_coupon_config SET coupon_name = #{couponName}, coupon_type = #{couponType}, " +
             "discount_value = #{discountValue}, min_amount = #{minAmount}, max_discount = #{maxDiscount}, " +
-            "applicable_products = #{applicableProducts}, required_attribute_keys = #{requiredAttributeKeys}, total_quantity = #{totalQuantity}, " +
+            "applicable_products = #{applicableProducts}, required_attribute_keys = #{requiredAttributeKeys}, " +
+            "total_quantity = #{totalQuantity}, user_claim_limit = #{userClaimLimit}, " +
             "valid_from = #{validFrom}, valid_until = #{validUntil}, is_active = #{isActive}, " +
             "scenic_id = #{scenicId}, update_time = NOW() WHERE id = #{id}")
     int updateCoupon(PriceCouponConfig coupon);
@@ -117,11 +120,11 @@ public interface PriceCouponConfigMapper extends BaseMapper<PriceCouponConfig> {
     int deleteCoupon(Long id);
     
     /**
-     * 查询指定景区的有效优惠券配置
+     * 查询指定景区的有效优惠券配置（可领取的）
      */
     @Select("SELECT * FROM price_coupon_config WHERE is_active = 1 " +
             "AND valid_from <= NOW() AND valid_until > NOW() " +
-            "AND used_quantity < total_quantity " +
+            "AND (total_quantity IS NULL OR total_quantity <= 0 OR COALESCE(claimed_quantity, 0) < total_quantity) " +
             "AND (scenic_id IS NULL OR scenic_id = #{scenicId})")
     List<PriceCouponConfig> selectValidCouponsByScenicId(@Param("scenicId") String scenicId);