新功能(#76): 促销系统下单流程集成

- 新增促销规则/规格促销价/使用记录模型与幂等迁移 - EvaluatePromo 支持 new_user/inactive_user/campaign 规则判定 - purchase/preCreate 接入促销判定：命中促销时跳过百分比折扣 - activate 激活后按 order_no 幂等写入 promo_usage - 订单模型和响应结构新增 promo_rule_id、promo_discount 字段 Co-authored-by: multica-agent <github@multica.ai>
2026-05-26 22:18:26 -07:00
parent 92e303aaa7
commit d2f9289338
14 changed files with 688 additions and 43 deletions
@@ -22,6 +22,8 @@ type Details struct {
 	Price          int64                `gorm:"type:int;not null;default:0;comment:Original price"`
 	Amount         int64                `gorm:"type:int;not null;default:0;comment:Order Amount"`
 	Discount       int64                `gorm:"type:int;not null;default:0;comment:Order Discount"`
+	PromoRuleId    int64                `gorm:"type:bigint unsigned;not null;default:0;comment:Promo Rule ID"`
+	PromoDiscount  int64                `gorm:"type:bigint;not null;default:0;comment:Promo Discount Amount"`
 	Coupon         string               `gorm:"type:varchar(255);default:null;comment:Coupon"`
 	CouponDiscount int64                `gorm:"type:int;not null;default:0;comment:Coupon Discount"`
 	PaymentId      int64                `gorm:"type:bigint;not null;default:0;comment:Payment Id"`