Feat(BE-339):Fixing dto reporting per supplier

internal/modules/repports/dto/repportPurchase.dto.go

@@ -1,6 +1,7 @@
 package dto
 
 import (
+	"math"
 	"time"
 
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
@@ -30,6 +31,8 @@ type PurchaseSupplierSummaryDTO struct {
 	TotalPurchaseValue       float64 `json:"total_purchase_value"`
 	TotalTransportValue      float64 `json:"total_transport_value"`
 	TotalAmount              float64 `json:"total_amount"`
+	TotalUnitPrice           float64 `json:"total_unit_price"`
+	TotalTransportUnitPrice  float64 `json:"total_transport_unit_price"`
 }
 
 type PurchaseSupplierDTO struct {
@@ -119,6 +122,11 @@ func ToPurchaseSupplierDTO(supplier entity.Supplier, items []entity.PurchaseItem
 	rows := make([]PurchaseSupplierRowDTO, 0, len(items))
 	summary := PurchaseSupplierSummaryDTO{}
 
+	var unitPriceSum float64
+	var unitPriceCount int
+	var transportUnitPriceSum float64
+	var transportUnitPriceCount int
+
 	for i := range items {
 		row := ToPurchaseSupplierRowDTO(&items[i])
 		rows = append(rows, row)
@@ -127,6 +135,20 @@ func ToPurchaseSupplierDTO(supplier entity.Supplier, items []entity.PurchaseItem
 		summary.TotalPurchaseValue += row.PurchaseValue
 		summary.TotalTransportValue += row.TransportValue
 		summary.TotalAmount += row.TotalAmount
+
+		unitPriceSum += row.UnitPrice
+		unitPriceCount++
+
+		transportUnitPriceSum += row.TransportUnitPrice
+		transportUnitPriceCount++
+	}
+
+	if unitPriceCount > 0 {
+		summary.TotalUnitPrice = math.Round(unitPriceSum / float64(unitPriceCount))
+	}
+
+	if transportUnitPriceCount > 0 {
+		summary.TotalTransportUnitPrice = math.Round(transportUnitPriceSum / float64(transportUnitPriceCount))
 	}
 
 	return PurchaseSupplierDTO{
@@ -135,4 +157,3 @@ func ToPurchaseSupplierDTO(supplier entity.Supplier, items []entity.PurchaseItem
 		Summary:  summary,
 	}
 }
-