public async Task <Unit> Handle(UpdateFlightCommand request, CancellationToken cancellationToken)
{
var entity = await _context.Flights
.SingleOrDefaultAsync(c => c.DepartureAirportId == request.DepartureAirportId && c.DestinationAirportId == request.DestinationAirportId, cancellationToken);
if (entity == null)
{
throw new NotFoundException(nameof(Flight), request.DepartureAirportId);
}
if (request.Distance != entity.Distance)
{
entity.Distance = request.Distance;
}
if (request.FuelConsumption != entity.FuelConsumption)
{
entity.FuelConsumption = request.FuelConsumption;
}
await _context.SaveChangesAsync(cancellationToken);
return(Unit.Value);
}
public async Task <FuelConsumptionModel> Handle(GetFuelConsumptionQuery request, CancellationToken cancellationToken)
{
var entityDeparture = await _context.Airports
.SingleOrDefaultAsync(c => c.AirportId == request.DepartureAirportId, cancellationToken);
if (entityDeparture == null)
{
throw new NotFoundException(nameof(Airport), request.DepartureAirportId);
}
var entityDestination = await _context.Airports
.SingleOrDefaultAsync(c => c.AirportId == request.DestinationAirportId, cancellationToken);
if (entityDeparture == null)
{
throw new NotFoundException(nameof(Airport), request.DestinationAirportId);
}
var queryResult = await _context.Flights.Where(filter => filter.DepartureAirportId == request.DepartureAirportId && filter.DestinationAirportId == request.DestinationAirportId).FirstOrDefaultAsync();
if (queryResult == null)
{
double calculatedDistance = CalcualteDistanceBetweenAirports(entityDeparture, entityDestination);
queryResult = new Flight()
{
DepartureAirportId = request.DepartureAirportId,
DestinationAirportId = request.DestinationAirportId,
Distance = calculatedDistance,
FuelConsumption = CaculateFuelConsumption(calculatedDistance)
};
_context.Flights.Add(queryResult);
await _context.SaveChangesAsync();
}
return(new FuelConsumptionModel()
{
Consumption = queryResult.FuelConsumption, Distance = queryResult.Distance
});
}
