using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Threading;
using System.Net;
using System.Collections;
using System.Diagnostics;


namespace TCPServerService
{
    class ReadThread
    {
        
        public Socket socket;
        public static readonly int PING_INTERVAL_SEC = 5;
        public DateTime lastPingTime = DateTime.Now;

        public bool isRunning = false;
        public String clientIP; 
        public ReadThread(Socket _socket)
        {
            socket = _socket;
            
            clientIP = ((IPEndPoint)socket.RemoteEndPoint).Address.ToString();
            Utils.WriteEventLog(Program.COMPANY, $"Create Read Thread {clientIP}", EventLogEntryType.Information, 34500); 
        }

        public void handleConnection()
        {
            System.Text.Encoding enc = System.Text.Encoding.ASCII;
            isRunning = true;
            while (isRunning)
            {
                try
                {                                   
                    byte[] data = new byte[1024];                    
                    int receive = socket.Receive(data);
                    //Utils.WriteEventLog(Program.COMPANY, "Recived data on TCP and Send on MULTICAST  PACK value:   " + receive, EventLogEntryType.Information, 34500);
                    //Utils.WriteEventLog(Program.COMPANY, "Data:   X" + System.Text.Encoding.ASCII.GetString(data, 0, receive) + "X", EventLogEntryType.Information, 34500); 

                    String str = System.Text.Encoding.ASCII.GetString(data, 0, receive);
                    if (str.Contains("PING"))
                    {
                        lastPingTime = DateTime.Now;

                        byte[] buff = enc.GetBytes("PONG");
                        Utils.WriteEventLog(Program.COMPANY, $"[TCPServer] PING received from {clientIP}", EventLogEntryType.Information, 23456);


                        socket.Send(buff, buff.Length, SocketFlags.None);
                        //socket.Send("PONG"....);

                    }
                    else if (str.Contains("##"))
                    {
                        
                        byte[] buf = null;
                        while (str.Contains("##"))
                        {
                            String send = str.Remove(str.IndexOf("##"));
                            send += "#";
                            Service1.MessageSend.Enqueue(send);                            
                            buf = enc.GetBytes(send);
                            Service1.UdpMulti.Send(buf, buf.Length);
                            foreach (Socket obj in Service1.listOFSocket)
                                if (obj!=socket)
                                    obj.Send(buf, buf.Length, SocketFlags.None);
                            str = str.Remove(0, str.IndexOf("##")+1);                            
                        }

                        Service1.MessageSend.Enqueue(str);                        
                        buf = enc.GetBytes(str);
                        Service1.UdpMulti.Send(buf, buf.Length);
                        foreach (Socket obj in Service1.listOFSocket)
                            if (obj != socket)
                                obj.Send(buf, buf.Length, SocketFlags.None);
                    }
                    else 
                    {
                        if (str.Length <= 0)
                            break;
                        Service1.MessageSend.Enqueue(str);                        
                        byte[] buf = enc.GetBytes(str);
                        Service1.UdpMulti.Send(buf, buf.Length);
                        foreach (Socket obj in Service1.listOFSocket)
                            if (obj != socket)
                                obj.Send(buf, buf.Length, SocketFlags.None);
                    }
                }
                catch (Exception e)
                {
                    Utils.WriteEventLog(Program.COMPANY, $"[{clientIP}] Error on recive data: {e.ToString()}", EventLogEntryType.Error, 23456);
                    //Form1.appDead = true;

                    OnReadException?.Invoke(clientIP);
                    break;
                }
                Thread.Sleep(1);
            }
            //myListener.Stop();
        }


        public delegate void ReadExceptionDelegate(String clientIP);
        public event ReadExceptionDelegate OnReadException;
    }
}