refactor and add outlet product table

internal/mappers/product_outlet_price_mapper.go

@@ -0,0 +1,48 @@
+package mappers
+
+import (
+	"apskel-pos-be/internal/entities"
+	"apskel-pos-be/internal/models"
+)
+
+func ProductOutletPriceEntityToModel(entity *entities.ProductOutletPrice) *models.ProductOutletPrice {
+	if entity == nil {
+		return nil
+	}
+
+	return &models.ProductOutletPrice{
+		ID:        entity.ID,
+		ProductID: entity.ProductID,
+		OutletID:  entity.OutletID,
+		Price:     entity.Price,
+		CreatedAt: entity.CreatedAt,
+		UpdatedAt: entity.UpdatedAt,
+	}
+}
+
+func ProductOutletPriceModelToEntity(model *models.ProductOutletPrice) *entities.ProductOutletPrice {
+	if model == nil {
+		return nil
+	}
+
+	return &entities.ProductOutletPrice{
+		ID:        model.ID,
+		ProductID: model.ProductID,
+		OutletID:  model.OutletID,
+		Price:     model.Price,
+		CreatedAt: model.CreatedAt,
+		UpdatedAt: model.UpdatedAt,
+	}
+}
+
+func ProductOutletPriceEntitiesToModels(entities []*entities.ProductOutletPrice) []*models.ProductOutletPrice {
+	if entities == nil {
+		return nil
+	}
+
+	models := make([]*models.ProductOutletPrice, len(entities))
+	for i, entity := range entities {
+		models[i] = ProductOutletPriceEntityToModel(entity)
+	}
+	return models
+}