public async Task <Result <Unit> > Handle(Commmand request, CancellationToken cancellationToken)
{
var activity = await _context.Activities
.Include(a => a.Attendees)
.ThenInclude(aa => aa.AppUser)
.FirstOrDefaultAsync(a => a.Id == request.Id);
var user = await _context.AppUsers.FirstOrDefaultAsync(x => x.UserName == _userAccessor.GetUsername());
if (user == null)
{
return(null);
}
var hostUsername = activity.Attendees.FirstOrDefault(x => x.IsHost)?.AppUser?.UserName;
var attendance = activity.Attendees.FirstOrDefault(x => x.AppUser.UserName == user.UserName);
if (attendance != null && hostUsername == user.UserName)
{
activity.IsCancelled = !activity.IsCancelled;
}
if (attendance != null && hostUsername != user.UserName)
{
activity.Attendees.Remove(attendance);
}
if (attendance == null)
{
attendance = new ActivityAttendee
{
AppUser = user,
Activity = activity,
IsHost = false
};
activity.Attendees.Add(attendance);
}
var result = await _context.SaveChangesAsync() > 0;
return(result ? Result <Unit> .Success(Unit.Value) : Result <Unit> .Failure("Problem updating activity"));
}
/// <summary>
/// Controls the motor direction/action
/// </summary>
/// <param name="command">The action</param>
public virtual void Run(Commmand command)
{
if (command == Commmand.FORWARD)
{
_pca9685.SetPin(_in2, false);
_pca9685.SetPin(_in1, true);
}
if (command == Commmand.BACKWARD)
{
_pca9685.SetPin(_in2, true);
_pca9685.SetPin(_in1, false);
}
if (command == Commmand.RELEASE)
{
_pca9685.SetPin(_in1, false);
_pca9685.SetPin(_in2, false);
}
}
