class InputModel {
  String szDocumentId;
  String szUserId;
  String szDate;
  int nOdometer;
  double mnLiters;
  double mnPricePerLiter;
  String szLocation;
  double? mnTotalPrice;
  InputModel({required this.szDocumentId, required this.szUserId, required this.szDate, required this.nOdometer, required this.mnLiters, required this.mnPricePerLiter, required this.szLocation, this.mnTotalPrice});

  factory InputModel.fromJson(Map<String, dynamic> json) {
    return InputModel(
      szDocumentId: json['szDocumentId'] as String,
      szUserId: json['szUserId'] as String,
      szDate: json['szDate'] as String,
      nOdometer: json['nOdometer'] as int,
      mnLiters: json['mnLiters'] as double,
      mnPricePerLiter: json['mnPricePerLiter'] as double,
      szLocation: json['szLocation'] as String,
      mnTotalPrice: (json['mnLiters'] as double) * (json['mnPricePerLiter'] as double),
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'szDocumentId': szDocumentId,
      'szUserId': szUserId,
      'szDate': szDate,
      'nOdometer': nOdometer,
      'mnLiters': mnLiters,
      'mnPricePerLiter': mnPricePerLiter,
      'szLocation': szLocation,
    };
  }
}