add product inventory

internal/mappers/inventory_mapper.go

@@ -3,6 +3,7 @@ package mappers
 import (
 	"apskel-pos-be/internal/entities"
 	"apskel-pos-be/internal/models"
+	"github.com/google/uuid"
 )
 
 func InventoryEntityToModel(entity *entities.Inventory) *models.Inventory {
@@ -53,10 +54,16 @@ func InventoryEntityToResponse(entity *entities.Inventory) *models.InventoryResp
 		return nil
 	}
 
+	productName := ""
+	if entity.Product.ID != uuid.Nil {
+		productName = entity.Product.Name
+	}
+
 	return &models.InventoryResponse{
 		ID:           entity.ID,
 		OutletID:     entity.OutletID,
 		ProductID:    entity.ProductID,
+		ProductName:  productName,
 		Quantity:     entity.Quantity,
 		ReorderLevel: entity.ReorderLevel,
 		IsLowStock:   entity.IsLowStock(),