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

namespace Getf.Service.Transfer.Request.SDK
{
	public class TcpClientService : IDisposable
	{
		private Socket _SocketClient;
		private readonly string _IP;
		private readonly int _Port;

		public event Action<TcpClientService, string> OnError;

		public event Action<TcpClientService> OnConnected;

		public event Action<TcpClientService, byte[]> OnDataGeted;

		bool IsDisposed = false;

		public TcpClientService(string ip, int port)
		{
			_IP = ip;
			_Port = port;
		}

		public void Connect()
		{
			if (_SocketClient != null)
			{
				return;
			}
			_SocketClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
			_SocketClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);
			IPAddress ipAddress = IPAddress.Parse(_IP);
			var endPoint = new IPEndPoint(ipAddress, _Port);
			_SocketClient.BeginConnect(endPoint, new AsyncCallback(Connected), null);
		}

		private void Connected(IAsyncResult asyncResult)
		{
			try
			{
				_SocketClient.EndConnect(asyncResult);
				TriggerConnected();
			}
			catch (Exception e)
			{
				TriggerError(e.Message);
			}
		}

		public void ReceiveLoop(int times = -1)
		{
			Thread thread = new Thread(() =>
			{
				int i = 0;
				while (!IsDisposed)
				{
					if (times > 0 && i >= times)
					{
						break;
					}
					Receive();
				}
			});
			thread.Start();
		}

		public void Receive()
		{
			byte[] buffer = new byte[100 * 1024 * 1024];
			ManualResetEvent manualResetEvent = new ManualResetEvent(false);
			try
			{
				_SocketClient.BeginReceive(buffer, 0, buffer.Length, SocketFlags.None, new AsyncCallback(Received), new object[] { manualResetEvent, buffer });
			}
			catch
			{
				manualResetEvent.Dispose();
			}
			manualResetEvent.WaitOne();
			manualResetEvent.Dispose();
			buffer = null;
		}

		private void Received(IAsyncResult asyncResult)
		{
			var objs = asyncResult.AsyncState as object[];
			var manualResetEvent = objs[0] as ManualResetEvent;
			var buffer = objs[1] as byte[];
			try
			{
				_SocketClient.EndReceive(asyncResult);
				TriggerDataGeted(buffer);
			}
			catch (Exception e)
			{
				TriggerError(e.Message);
			}
			manualResetEvent.Set();
		}

		public void Send(byte[] buffer)
		{
			_SocketClient.BeginSend(buffer, 0, buffer.Length, SocketFlags.None, new AsyncCallback(Sended), null);
		}

		private void Sended(IAsyncResult asyncResult)
		{
			try
			{
				_SocketClient.EndSend(asyncResult);
			}
			catch (Exception e)
			{
				TriggerError(e.Message);
			}
		}

		private void TriggerError(string message)
		{
			if (OnError != null)
			{
				OnError(this, message);
			}
		}
		private void TriggerConnected()
		{
			if (OnConnected != null)
			{
				OnConnected(this);
			}
		}

		private void TriggerDataGeted(byte[] buffer)
		{
			if (OnDataGeted != null)
			{
				OnDataGeted(this, buffer);
			}
		}

		public void Dispose()
		{
			IsDisposed = true;
			try
			{
				if (_SocketClient != null)
				{
					try
					{
						_SocketClient.Disconnect(false);
					}
					catch
					{

					}
					_SocketClient.Dispose();
				}
			}
			catch
			{

			}
		}
	}
}