FEAT[BE] :add marketing type field to delivery and sales order DTOs, enhance validation and service logic for consistent marketing type handling

internal/modules/marketing/dto/salesorder.dto.go

@@ -1,6 +1,7 @@
 package dto
 
 import (
+	"math"
 	"time"
 
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
@@ -11,6 +12,7 @@ import (
 
 type MarketingProductDTO struct {
 	Id                  uint                                          `json:"id"`
+	MarketingType       string                                        `json:"marketing_type"`
 	Qty                 float64                                       `json:"qty"`
 	UnitPrice           float64                                       `json:"unit_price"`
 	AvgWeight           float64                                       `json:"avg_weight"`
@@ -44,12 +46,13 @@ func ToMarketingProductDTO(e entity.MarketingProduct, marketingType string) Mark
 	// Calculate total_peti only for TELUR marketing type
 	var totalPeti *float64
 	if marketingType == "TELUR" && e.ConvertionUnit != nil && *e.ConvertionUnit == "PETI" && e.WeightPerConvertion != nil && *e.WeightPerConvertion > 0 {
-		calculated := e.TotalWeight / *e.WeightPerConvertion
+		calculated := math.Floor(e.TotalWeight / *e.WeightPerConvertion)
 		totalPeti = &calculated
 	}
 
 	return MarketingProductDTO{
 		Id:                  e.Id,
+		MarketingType:       marketingType,
 		Qty:                 e.Qty,
 		UnitPrice:           e.UnitPrice,
 		AvgWeight:           e.AvgWeight,