internal/contract/self_order_contract.go

@@ -52,3 +52,18 @@ type SelfOrderCreateOrderItem struct {
 	Quantity         int        `json:"quantity" validate:"required,min=1"`
 	Notes            *string    `json:"notes,omitempty"`
 }
+
+type SelfOrderListCategoriesRequest struct {
+	TableID uuid.UUID `form:"table_id" validate:"required"`
+}
+
+type SelfOrderCategoryItem struct {
+	ID          uuid.UUID `json:"id"`
+	Name        string    `json:"name"`
+	Description *string   `json:"description,omitempty"`
+	Order       int       `json:"order"`
+}
+
+type SelfOrderListCategoriesResponse struct {
+	Categories []SelfOrderCategoryItem `json:"categories"`
+}

internal/handler/self_order_handler.go

@@ -296,6 +296,68 @@ func (h *SelfOrderHandler) validateCreateOrderRequest(req *contract.SelfOrderCre
 	return nil
 }
 
+func (h *SelfOrderHandler) ListCategories(c *gin.Context) {
+	ctx := c.Request.Context()
+
+	var req contract.SelfOrderListCategoriesRequest
+	if err := c.ShouldBindQuery(&req); err != nil {
+		logger.FromContext(ctx).WithError(err).Error("SelfOrderHandler::ListCategories -> query binding failed")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
+			contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, err.Error()),
+		}), "SelfOrderHandler::ListCategories")
+		return
+	}
+
+	if req.TableID == uuid.Nil {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
+			contract.NewResponseError(constants.MissingFieldErrorCode, constants.RequestEntity, "table_id is required"),
+		}), "SelfOrderHandler::ListCategories")
+		return
+	}
+
+	table, err := h.tableRepo.GetByID(ctx, req.TableID)
+	if err != nil {
+		logger.FromContext(ctx).WithError(err).Error("SelfOrderHandler::ListCategories -> table not found")
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
+			contract.NewResponseError(constants.NotFoundErrorCode, constants.TableEntity, "table not found"),
+		}), "SelfOrderHandler::ListCategories")
+		return
+	}
+
+	catResp := h.categoryService.ListCategories(ctx, &contract.ListCategoriesRequest{
+		OrganizationID: &table.OrganizationID,
+		Page:           1,
+		Limit:          100,
+	})
+	if catResp.HasErrors() {
+		logger.FromContext(ctx).WithError(catResp.GetErrors()[0]).Error("SelfOrderHandler::ListCategories -> failed to list categories")
+		util.HandleResponse(c.Writer, c.Request, catResp, "SelfOrderHandler::ListCategories")
+		return
+	}
+
+	catList, ok := catResp.Data.(*contract.ListCategoriesResponse)
+	if !ok {
+		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
+			contract.NewResponseError(constants.InternalServerErrorCode, constants.CategoryServiceEntity, "unexpected categories response type"),
+		}), "SelfOrderHandler::ListCategories")
+		return
+	}
+
+	items := make([]contract.SelfOrderCategoryItem, 0, len(catList.Categories))
+	for _, cat := range catList.Categories {
+		items = append(items, contract.SelfOrderCategoryItem{
+			ID:          cat.ID,
+			Name:        cat.Name,
+			Description: cat.Description,
+			Order:       cat.Order,
+		})
+	}
+
+	util.HandleResponse(c.Writer, c.Request, contract.BuildSuccessResponse(&contract.SelfOrderListCategoriesResponse{
+		Categories: items,
+	}), "SelfOrderHandler::ListCategories")
+}
+
 func (h *SelfOrderHandler) resolveOrgUser(ctx context.Context, organizationID uuid.UUID) (uuid.UUID, error) {
 	users, err := h.userRepo.GetByOrganizationID(ctx, organizationID)
 	if err != nil {

internal/router/router.go

@@ -149,6 +149,7 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 
 		selfOrder := v1.Group("/self-order")
 		{
+			selfOrder.GET("/categories", r.selfOrderHandler.ListCategories)
 			selfOrder.POST("/menu", r.selfOrderHandler.GetMenu)
 			selfOrder.POST("/order", r.selfOrderHandler.CreateOrder)
 		}