public override DsPadId Notify()

in ScpControl/Usb/UsbHub.cs [210:299]
68 lines of code
15 McCabe index (conditional complexity)

        public override DsPadId Notify(ScpDevice.Notified notification, string Class, string path)
        {
            Log.DebugFormat("++ Notify [{0}] [{1}] [{2}]", notification, Class, path);

            var classGuid = Guid.Parse(Class);

            switch (notification)
            {
                case ScpDevice.Notified.Arrival:
                    {
                        var arrived = new UsbDevice();

                        if (classGuid == UsbDs3.DeviceClassGuid)
                        {
                            arrived = new UsbDs3();
                            Log.Info("DualShock 3 plugged in via Usb");
                        }

                        if (classGuid == UsbDs4.DeviceClassGuid)
                        {
                            arrived = new UsbDs4();
                            Log.Info("DualShock 4 plugged in via Usb");
                        }

                        if (classGuid == UsbGenericGamepad.DeviceClassGuid)
                        {
                            arrived = UsbGenericGamepad.DeviceFactory(path);

                            // unknown or unsupported device
                            if (arrived == null)
                                break;

                            Log.Debug("Generic Gamepad plugged in via Usb");
                        }

                        Log.DebugFormat("Arrival event for GUID {0} received", classGuid);

                        if (arrived.Open(path))
                        {
                            Log.DebugFormat("Device MAC address: {0}", arrived.DeviceAddress.AsFriendlyName());

                            if (!Apply3RdPartyWorkaroundsForDs3(ref arrived, path: path)) break;

                            if (LogArrival(arrived))
                            {
                                if (_devices[(byte) arrived.PadId].IsShutdown)
                                {
                                    _devices[(byte) arrived.PadId].IsShutdown = false;

                                    _devices[(byte) arrived.PadId].Close();
                                    _devices[(byte) arrived.PadId] = arrived;

                                    return arrived.PadId;
                                }
                                arrived.HidReportReceived += OnHidReportReceived;

                                _devices[(byte) arrived.PadId].Close();
                                _devices[(byte) arrived.PadId] = arrived;

                                if (m_Started) arrived.Start();
                                return arrived.PadId;
                            }
                        }
                        else
                        {
                            Log.FatalFormat("Couldn't open device {0}", path);
                        }

                        arrived.Close();
                    }
                    break;

                case ScpDevice.Notified.Removal:
                    {
                        foreach (var t in _devices.Where(t => t.State == DsState.Connected && path == t.Path))
                        {
                            Log.InfoFormat("Device with MAC address {0} unplugged from Usb", t.DeviceAddress.AsFriendlyName());

                            // play disconnect sound
                            if (GlobalConfiguration.Instance.IsUsbDisconnectSoundEnabled)
                                AudioPlayer.Instance.PlayCustomFile(GlobalConfiguration.Instance.UsbDisconnectSoundFile);

                            t.Stop();
                        }
                    }
                    break;
            }

            return DsPadId.None;
        }