private RentResult CalculateRental(Rent rent)
{
var result = new RentResult(rent);
result.Vehicle = _vehicleFactory.Build(rent.VehicleType);
result.TotalDays = CalculateTotalDays(rent.StartDate, rent.StopDate.Date);
result.Optionals = GetOptionals(result.Vehicle, rent.Optionals).ToList();
result.OptionalsValue = result.Optionals.Sum(x => x.Rate);
result.EstimateKmValue = result.Vehicle.KmRate * rent.EstimateKm;
result.TotalDaysValue = result.TotalDays * result.Vehicle.DailyRate;
result.TotalValue = result.TotalDaysValue + result.OptionalsValue + result.EstimateKmValue;
return(result);
}