public static async partial Task <CentralManager> NewAsync()
{
var instance = new CentralManager();
var state = await [email protected](
x => x != CBManagerState.Unknown && x != CBManagerState.Resetting
);
return(state switch {
CBManagerState.Unsupported => throw new Exception("bluetooth unsupported"),
CBManagerState.Unauthorized => throw new Exception("bluetooth unauthorized"),
CBManagerState.PoweredOff => throw new Exception("bluetooth powered off"),
CBManagerState.PoweredOn => instance,
_ => throw new Exception("unknown state"),
});
private sealed record Stopper(IDisposable Subscription, CentralManager Central) : IAsyncDisposable