FEAT[BE] :update price calculation in sales order service for accurate rounding, add new conversion unit for quantity

internal/modules/marketing/services/salesorder.service.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"math"
 	"strings"
 
 	commonRepo "gitlab.com/mbugroup/lti-api.git/internal/common/repository"
@@ -752,13 +753,13 @@ func (s *salesOrdersService) createMarketingProductWithDelivery(ctx context.Cont
 func (s *salesOrdersService) calculatePriceByMarketingType(marketingType string, qty, avgWeight, unitPrice float64, week *int) (totalWeight, totalPrice float64) {
 	if marketingType == string(utils.MarketingTypeTrading) {
 		totalWeight = 0
-		totalPrice = qty * unitPrice
+		totalPrice = math.Round(qty*unitPrice*100) / 100
 	} else if marketingType == string(utils.MarketingTypeAyamPullet) && week != nil && *week > 0 {
-		totalWeight = qty * avgWeight
-		totalPrice = unitPrice * float64(*week) * qty
+		totalWeight = math.Round(qty*avgWeight*100) / 100
+		totalPrice = math.Round(unitPrice*float64(*week)*qty*100) / 100
 	} else {
-		totalWeight = qty * avgWeight
-		totalPrice = totalWeight * unitPrice
+		totalWeight = math.Round(qty*avgWeight*100) / 100
+		totalPrice = math.Round(totalWeight*unitPrice*100) / 100
 	}
 	return totalWeight, totalPrice
 }

internal/utils/constant.go

@@ -234,6 +234,7 @@ type ConvertionUnit string
 const (
 	ConvertionUnitPeti ConvertionUnit = "PETI"
 	ConvertionUnitKG   ConvertionUnit = "KG"
+	ConvertionUnitQty  ConvertionUnit = "QTY"
 )
 
 // -------------------------------------------------------------------
@@ -643,7 +644,7 @@ func IsValidMarketingType(v string) bool {
 
 func IsValidConvertionUnit(v string) bool {
 	switch ConvertionUnit(v) {
-	case ConvertionUnitPeti, ConvertionUnitKG:
+	case ConvertionUnitPeti, ConvertionUnitKG, ConvertionUnitQty:
 		return true
 	}
 	return false