using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using MiscUtil;
namespace RemoteControl
{
    class Program
    {

        static void Main(string[] args)
        {
            while (true)
            {
                //Send Input
                SendInput("192.168.1.15", Keys.A, 50).GetAwaiter().GetResult();
                Console.WriteLine("Send Key");
                //Free Input
                SendInput("192.168.1.15", Keys.None, 50).GetAwaiter().GetResult();
                Console.WriteLine("Free Key");
            }

            //Console.ReadKey();
        }

        public class Keys
        {
            public const uint None = 0;
            public const uint A = 1;
            public const uint B = 1 << 1;
            public const uint X = 1 << 2;
            public const uint Y = 1 << 3;
            public const uint LEFT_STICK = 1 << 4;
            public const uint RIGHT_STICK = 1 << 5;
            public const uint L = 1 << 6;
            public const uint R = 1 << 7;
            public const uint ZL = 1 << 8;
            public const uint ZR = 1 << 9;
            public const uint PLUS = 1 << 10;
            public const uint MINUS = 1 << 11;
            public const uint DPAD_LEFT = 1 << 12;
            public const uint DOWN_UP = 1 << 13;
            public const uint DPAD_RIGHT = 1 << 14;
            public const uint DPAD_DOWN = 1 << 15;
            public const uint LEFT_ANALOG_LEFT = 1 << 16;
            public const uint LEFT_ANALOG_UP = 1 << 17;
            public const uint LEFT_ANALOG_RIGHT = 1 << 18;
            public const uint LEFT_ANALOG_DOWN = 1 << 19;
            public const uint RIGHT_ANALOG_LEFT = 1 << 20;
            public const uint RIGHT_ANALOG_UP = 1 << 21;
            public const uint RIGHT_ANALOG_RIGHT = 1 << 22;
            public const uint RIGHT_ANALOG_DOWN = 1 << 23;
            public const uint SL = 1 << 24;
            public const uint SR = 1 << 25;
        }

        private static uint get_key_state(uint Key, int Status)
        {
            uint Out = 0;

            if (Status >= 0)
            {
                Out |= Key;
            }
            else
            {
                Out &= ~Key;
            }

            return Out;
        }

        public static async Task SendInput(string host, uint Key, int Delay)
        {

            var client = new UdpClient();

            IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse(host), 8080); // Build a UDP Socket

            MemoryStream stream = new MemoryStream(26);
            using (BinaryWriter writer = new BinaryWriter(stream))
            {
                writer.Write((UInt16)0x3275);
                writer.Write((UInt64)get_key_state(Key, 0));
                writer.Write((Int16)0);
                writer.Write((Int16)0);
                writer.Write((Int16)0);
                writer.Write((Int16)0);

                client.Send(stream.ToArray(), (int)stream.Length, endpoint); // Send Input

            }

            await Task.Delay(Delay); // Delay
        }
    }
}