public async Task Handle(EditTravel command)
{
if (command.AggregateId == null || command.AggregateId == Guid.Empty)
{
throw new IncorrectRequestException(ErrorCodes.ParameterCannotBeEmpty, nameof(command.AggregateId));
}
if (string.IsNullOrWhiteSpace(command.Destination) && !command.Date.HasValue)
{
throw new IncorrectRequestException(ErrorCodes.ParameterCannotBeEmpty, $"{nameof(command.Destination)}, {nameof(command.Date)}");
}
Models.Travel travel = await store.Get(command.AggregateId);
if (travel == null || travel.Deleted)
{
throw new IncorrectRequestException(ErrorCodes.ResourceDoesNotExist, nameof(travel));
}
if (travel.Version != command.AggregateVersion)
{
throw new ResourceStateChangedException(nameof(Travel), travel.Id, travel.Version);
}
Identity identity = identityProvider.GetIdentity();
if (travel.Owner != identity.Username && identity.Role != Roles.Admin)
{
throw new UnauthorizedUserException();
}
var @event = new TravelUpdated
{
RelatedCommandId = command.CommandId,
Id = travel.Id,
Destination = string.IsNullOrWhiteSpace(command.Destination) ? travel.Destination : command.Destination,
Date = command.Date.HasValue ? command.Date.Value : travel.Date,
};
travel.ApplyEvent(@event);
@event.AggregateVersion = travel.Version;
await eventPublisher.Publish(@event);
}
public void Apply(TravelUpdated @event)
{
Destination = @event.Destination;
Date = @event.Date;
}