using UnityEngine;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Net;

public class Chat : MonoBehaviour
{
	public TransportTCP	m_transport;

	public ChatText commentTextPrefab;

	public Transform commentHolder;
		
	public string m_hostAddress {get; set;}
	
	private const int m_port = 50765;

	private	bool m_isServer = false;
	
	
	// Use this for initialization
	void Start()
	{
		IPHostEntry hostEntry = Dns.GetHostEntry(Dns.GetHostName());

		System.Net.IPAddress hostAddress = hostEntry.AddressList[0];
		
		Debug.Log(hostEntry.HostName);
		
		m_hostAddress = hostAddress.ToString ();
		m_transport.onStateChanged += OnEventHandling;
		
	}
	
	
	IEnumerator UpdateChatting()
	{
		while(true)
		{
			byte[] buffer = new byte[1400];

			int recvSize = m_transport.Receive(ref buffer, buffer.Length);
			if (recvSize > 0) {
				string message = System.Text.Encoding.UTF8.GetString(buffer);
				Debug.Log("Recv data:" + message );

				AddComment(message);
			}	

			yield return null;
		}
	}
	
	
	void Send(string message)
	{
		message = "[" + DateTime.Now.ToString("HH:mm:ss") + "] " + message;
		
		byte[] buffer = System.Text.Encoding.UTF8.GetBytes(message);

		m_transport.Send(buffer, buffer.Length);

		AddComment(message);
	}
	

	void AddComment(string message)
	{
		var newComment = Instantiate(commentTextPrefab,commentHolder);
		newComment.SetUp(message);
	}
	void OnApplicationQuit() {
		if (m_transport != null) {
			if(m_isServer)
			{
				m_transport.StopServer();
			}
			else
			{
				m_transport.Disconnect();
			}
		}
	}

	public void OnEventHandling(NetEventState state)
	{
		switch (state.type) {
		case NetEventType.Connect:
			AddComment("접속");			
			break;

		case NetEventType.Disconnect:
			AddComment("접속 종료");
			break;
		}
	}


	public void CreateRoom()
	{
		m_transport.StartServer(m_port, 1);
		m_isServer = true;
	}

	public void JoinChatRoom()
	{
		bool ret = m_transport.Connect(m_hostAddress, m_port);

		if (ret) {
			StartCoroutine("UpdateChatting");
		}
		else {
			Debug.LogError("Failed");
		}
	}
	

	public void Leave()
	{
		if (m_isServer == true) {
			m_transport.StopServer();
		}
		else {
			m_transport.Disconnect();
		}

		StopCoroutine("UpdateChatting");
	}
	

}