private async Task <FlightDto> CompleteFlight(FlightDto flight)
{
var destination = await _airportService.GetAsync(flight.DestinationAirportId);
var departure = await _airportService.GetAsync(flight.DepartureAirportId);
var aircraft = await _aircraftService.GetAsync(flight.AircraftId);
if (destination == null || departure == null || aircraft == null)
{
throw new ArgumentNullException(nameof(CompleteFlight));
}
flight.Distance = DistanceBetweenPlaces(departure, destination);
flight.FuelConsumption = FuelConsumption(aircraft, flight.Distance);
return(flight);
}