using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Support.V4.App;
using Android.Support.V7.App;
using Android.Util;
using Android.Views;
using System.Net;
using Android.Widget;
using System.Net.Sockets;
using System.Text;
using System.Linq;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace NavDrawer.Resources
{
    [Activity(MainLauncher = true, NoHistory = true)]
    public class SplashActivity : AppCompatActivity
    {
        static readonly string TAG = "X:" + typeof(SplashActivity).Name;


        public override void OnCreate(Bundle savedInstanceState, PersistableBundle persistentState)
        {
            base.OnCreate(savedInstanceState, persistentState);
            var listener = new UdpListener();
            listener.StartListening1();
            Log.Debug(TAG, "UDP Listener gestartet");
        }

        public static class GlobalVariables
        {
            public static string status = "0";

        }

        protected override void OnResume()
        {
            base.OnResume();
            Task startupWork = new Task(() => { SimulateStartup(); });
            startupWork.Start();

        }

        public override void OnBackPressed() { }

        class UdpListener
        {
            private readonly UdpClient _udpClient = new UdpClient(4210);

            public async void StartListening1()
            {
                await Task.Delay(200);

                 if(SplashActivity.GlobalVariables.status == "0") {

                   UdpClient clientas = new UdpClient(4210);
                   IPEndPoint ipa = new IPEndPoint(IPAddress.Parse("192.168.178.50"), 4210);
                   byte[] bytess = Encoding.ASCII.GetBytes("n");
                   clientas.Send(bytess, bytess.Length, ipa);
                   clientas.Close();
                       Log.Debug(TAG, "Resend");
                       await Task.Delay(1000);

                   }

                Log.Debug(TAG, "Test");
                while (true)
                {
                    var result = await _udpClient.ReceiveAsync();
                    var message = Encoding.ASCII.GetString(result.Buffer);

                    if (message.Contains("y"))
                    {
                        SplashActivity.GlobalVariables.status = "1";

                        Log.Debug(TAG, "Verbindung zum RC hergestellt");

                    }


                }

            }
        }




      async void SimulateStartup()
        {

           var listener = new UdpListener();
            listener.StartListening1();

            await Task.Delay(100);
            SimulateStartup2();

        }



        async void SimulateStartup2()
        {

         await Task.Delay(200);
           if(SplashActivity.GlobalVariables.status == "1")
            {
                Log.Debug(TAG, "Starte APP");
                StartActivity(new Intent(Application.Context, typeof(MainActivity)));
            }

         }

    }
}