unfinished purchase

internal/utils/recording/util.recording.go

@@ -12,7 +12,10 @@ func MapBodyWeights(recordingID uint, items []validation.BodyWeight) []entity.Re
 
 	result := make([]entity.RecordingBW, 0, len(items))
 	for _, item := range items {
-		totalWeight := item.TotalWeight
+		var totalWeight float64
+		if item.TotalWeight != nil {
+			totalWeight = *item.TotalWeight
+		}
 		if totalWeight <= 0 {
 			totalWeight = item.AvgWeight * item.Qty
 		}