// Used to send data from a VMWare VM running the EyeX software
// with a Steelseries Sentry to a Mac OSX host over UDP.
namespace MinimalGazeDataStream
{
    using EyeXFramework;
    using System;
    using System.Net;
    using System.Net.Sockets;
    using System.Text;
    using Tobii.EyeX.Framework;

    public static class Program
    {
        public static void Main(string[] args)
        {
            Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            IPAddress addr = IPAddress.Parse("192.168.181.1");
            IPEndPoint ep = new IPEndPoint(addr, 11249);

            using (var eyeXHost = new EyeXHost())
            {
                // Create a data stream: lightly filtered gaze point data.
                // Other choices of data streams include EyePositionDataStream and FixationDataStream.
                using (var lightlyFilteredGazeDataStream = eyeXHost.CreateGazePointDataStream(GazePointDataMode.LightlyFiltered))
                // using (var lightlyFilteredGazeDataStream = eyeXHost.CreateFixationDataStream(FixationDataMode.Sensitive))
                {
                    using (var eyeStream = eyeXHost.CreateEyePositionDataStream())
                    {
                        // Start the EyeX host.
                        eyeXHost.Start();

                        // Write the data to the console.
                        lightlyFilteredGazeDataStream.Next += (s, e) =>
                        {
                            string msg = String.Format("{{\"gaze\":[{0},{1}],\"time\": {2}}}", e.X, e.Y, e.Timestamp);
                            byte[] sendbuf = Encoding.ASCII.GetBytes(msg);
                            sock.SendTo(sendbuf, ep);
                            // Console.WriteLine("G: {0}", msg);
                        };
                        eyeStream.Next += (s, e) =>
                        {
                            string msg = String.Format("{{\"leftEye\":[{0},{1},{2}],\"rightEye\":[{3},{4},{5}],\"time\": {6}}}", 
                                e.LeftEye.X, e.LeftEye.Y, e.LeftEye.Z,
                                e.RightEye.X, e.RightEye.Y, e.RightEye.Z,
                                e.Timestamp);
                            byte[] sendbuf = Encoding.ASCII.GetBytes(msg);
                            sock.SendTo(sendbuf, ep);
                            // Console.WriteLine("E: {0}", msg);
                        };

                        // Let it run until a key is pressed.
                        Console.WriteLine("Listening for gaze data, press any key to exit...");
                        Console.In.Read();
                    }
                }
            }
        }
    }
}