feat: add nullable outlet_id to product

internal/contract/product_contract.go

@@ -7,6 +7,7 @@ import (
 )
 
 type CreateProductRequest struct {
+	OutletID        *uuid.UUID                    `json:"outlet_id,omitempty"`
 	CategoryID      uuid.UUID                     `json:"category_id" validate:"required"`
 	SKU             *string                       `json:"sku,omitempty"`
 	Name            string                        `json:"name" validate:"required,min=1,max=255"`
@@ -25,6 +26,7 @@ type CreateProductRequest struct {
 }
 
 type UpdateProductRequest struct {
+	OutletID     *uuid.UUID             `json:"outlet_id,omitempty"`
 	CategoryID   *uuid.UUID             `json:"category_id,omitempty"`
 	SKU          *string                `json:"sku,omitempty"`
 	Name         *string                `json:"name,omitempty" validate:"omitempty,min=1,max=255"`
@@ -58,6 +60,7 @@ type UpdateProductVariantRequest struct {
 type ProductResponse struct {
 	ID             uuid.UUID                `json:"id"`
 	OrganizationID uuid.UUID                `json:"organization_id"`
+	OutletID       *uuid.UUID               `json:"outlet_id"`
 	CategoryID     uuid.UUID                `json:"category_id"`
 	CategoryName   string                   `json:"category_name"`
 	SKU            *string                  `json:"sku"`
@@ -89,6 +92,7 @@ type ProductVariantResponse struct {
 
 type ListProductsRequest struct {
 	OrganizationID *uuid.UUID `json:"organization_id,omitempty"`
+	OutletID       *uuid.UUID `json:"outlet_id,omitempty"`
 	CategoryID     *uuid.UUID `json:"category_id,omitempty"`
 	BusinessType   string     `json:"business_type,omitempty"`
 	IsActive       *bool      `json:"is_active,omitempty"`