private async Task Execute(ICommand command, CancellationToken ct)
{
using var _ = await _gate.LockAsync(ct);
switch (command)
{
case TurnOn on:
case Toggle toggle when !_state.Value:
await ScreenHelper.On(ct);
_state.OnNext(true);
break;
case TurnOff off:
case Toggle toggle:
await ScreenHelper.Off(ct);
_state.OnNext(false);
break;
default:
throw new ArgumentOutOfRangeException(nameof(command), $"Command '{command}' is not supported on Screen");
}
}
/// <inheritdoc />
public IObservable <DeviceState> GetAndObserveState()
=> ScreenHelper
.GetAndObserveState()
.Select(state => new DeviceState(
ComputerDeviceId.Screen,
ImmutableDictionary <string, string> .Empty.Add("state", state == ScreenHelper.ScreenState.Off ? "off" : "on"), true));