新功能(#79): 实现促销管理接口并支持数量配价

Co-authored-by: multica-agent <github@multica.ai>

internal/logic/admin/promo/getRuleDetailLogic.go

@@ -0,0 +1,35 @@
+package promo
+
+import (
+	"context"
+
+	"github.com/perfect-panel/server/internal/svc"
+	"github.com/perfect-panel/server/internal/types"
+	"github.com/perfect-panel/server/pkg/logger"
+	"github.com/perfect-panel/server/pkg/xerr"
+	"github.com/pkg/errors"
+)
+
+type GetRuleDetailLogic struct {
+	logger.Logger
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+}
+
+func NewGetRuleDetailLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetRuleDetailLogic {
+	return &GetRuleDetailLogic{
+		Logger: logger.WithContext(ctx),
+		ctx:    ctx,
+		svcCtx: svcCtx,
+	}
+}
+
+func (l *GetRuleDetailLogic) GetRuleDetail(req *types.GetPromoRuleDetailRequest) (*types.PromoRule, error) {
+	rule, err := l.svcCtx.PromoModel.FindRule(l.ctx, req.Id)
+	if err != nil {
+		l.Errorw("[GetPromoRuleDetail] Database Error", logger.Field("error", err.Error()))
+		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "get promo rule detail error: %v", err.Error())
+	}
+	resp := convertRule(rule)
+	return &resp, nil
+}