优化交易创建流程，客户管理新增折扣与来源字段及功能

web/services/coupon.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/shopspring/decimal"
+	"gorm.io/gen/field"
 	"gorm.io/gorm"
 )
 
@@ -16,6 +17,80 @@ var Coupon = &couponService{}
 
 type couponService struct{}
 
+func (s *couponService) All() (result []*m.Coupon, err error) {
+	return q.Coupon.Find()
+}
+
+func (s *couponService) Page(req *core.PageReq) (result []*m.Coupon, count int64, err error) {
+	return q.Coupon.FindByPage(req.GetOffset(), req.GetLimit())
+}
+
+func (s *couponService) Create(data CreateCouponData) error {
+	return q.Coupon.Create(&m.Coupon{
+		UserID:    data.UserID,
+		Code:      data.Code,
+		Remark:    data.Remark,
+		Amount:    data.Amount,
+		MinAmount: data.MinAmount,
+		Status:    m.CouponStatusUnused,
+		ExpireAt:  data.ExpireAt,
+	})
+}
+
+type CreateCouponData struct {
+	UserID    *int32          `json:"user_id"`
+	Code      string          `json:"code" validate:"required"`
+	Remark    *string         `json:"remark"`
+	Amount    decimal.Decimal `json:"amount" validate:"required"`
+	MinAmount decimal.Decimal `json:"min_amount"`
+	ExpireAt  *time.Time      `json:"expire_at"`
+}
+
+func (s *couponService) Update(data UpdateCouponData) error {
+	do := make([]field.AssignExpr, 0)
+
+	if data.UserID != nil {
+		do = append(do, q.Coupon.UserID.Value(*data.UserID))
+	}
+	if data.Code != nil {
+		do = append(do, q.Coupon.Code.Value(*data.Code))
+	}
+	if data.Remark != nil {
+		do = append(do, q.Coupon.Remark.Value(*data.Remark))
+	}
+	if data.Amount != nil {
+		do = append(do, q.Coupon.Amount.Value(*data.Amount))
+	}
+	if data.MinAmount != nil {
+		do = append(do, q.Coupon.MinAmount.Value(*data.MinAmount))
+	}
+	if data.Status != nil {
+		do = append(do, q.Coupon.Status.Value(int(*data.Status)))
+	}
+	if data.ExpireAt != nil {
+		do = append(do, q.Coupon.ExpireAt.Value(*data.ExpireAt))
+	}
+
+	_, err := q.Coupon.Where(q.Coupon.ID.Eq(data.ID)).UpdateSimple(do...)
+	return err
+}
+
+type UpdateCouponData struct {
+	ID        int32            `json:"id" validate:"required"`
+	UserID    *int32           `json:"user_id"`
+	Code      *string          `json:"code"`
+	Remark    *string          `json:"remark"`
+	Amount    *decimal.Decimal `json:"amount"`
+	MinAmount *decimal.Decimal `json:"min_amount"`
+	Status    *m.CouponStatus  `json:"status"`
+	ExpireAt  *time.Time       `json:"expire_at"`
+}
+
+func (s *couponService) Delete(id int32) error {
+	_, err := q.Coupon.Where(q.Coupon.ID.Eq(id)).UpdateColumn(q.Coupon.DeletedAt, time.Now())
+	return err
+}
+
 func (s *couponService) GetCouponAvailableByCode(code string, amount decimal.Decimal, uid *int32) (*m.Coupon, error) {
 	// 获取优惠券
 	coupon, err := q.Coupon.Where(