using UnityEngine;
using System;
using System.Collections;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;

public class SocketClient : MonoBehaviour
{

    // Use this for initialization

    public GameObject Target;
    private float xPos, yPos;
    public Vector2 Scale = new Vector2(1f, 1f); //MAKE SURE THIS IS NOT (0f,0f), OTHERWISE THE x and y COORDINATES WILL BE MULTIPLIED BY 0

    Thread receiveThread;
    UdpClient client;
    private int port = 5065;

    //info

    public string lastReceivedUDPPacket = "";
    public string allReceivedUDPPackets = "";

    void Start()
    {
        init();
    }

    void OnGUI()
    {
        Rect rectObj = new Rect(40, 10, 200, 400);

        GUIStyle style = new GUIStyle();

        style.alignment = TextAnchor.UpperLeft;

        GUI.Box(rectObj, "# UDPReceive\n127.0.0.1 " + port + " #\n"

                  //+ "shell> nc -u 127.0.0.1 : "+port +" \n"

                  + "\nLast Packet: \n" + lastReceivedUDPPacket

                  //+ "\n\nAll Messages: \n"+allReceivedUDPPackets

                  , style);

    }

    private void init()
    {
        print("UPDSend.init()");

        port = 5065;

        print("Sending to 127.0.0.1 : " + port);

        receiveThread = new Thread(new ThreadStart(ReceiveData));
        receiveThread.IsBackground = true;
        receiveThread.Start();

    }

    private void ReceiveData()
    {
        client = new UdpClient(port);
        while (true)
        {
            try
            {
                IPEndPoint anyIP = new IPEndPoint(IPAddress.Parse("127.0.0.1"), port);
                byte[] data = client.Receive(ref anyIP);

                string text = Encoding.UTF8.GetString(data);
                print(">> " + text);
                lastReceivedUDPPacket = text;
                allReceivedUDPPackets = allReceivedUDPPackets + text;

                xPos = GetX(text) * Scale.x;
                yPos = GetY(text) * Scale.y;

            }
            catch (Exception e)
            {
                print(e.ToString());
            }
        }
    }

    public string getLatestUDPPacket()
    {
        allReceivedUDPPackets = "";
        return lastReceivedUDPPacket;
    }

    //New funcitons ################################################################################################################
    float GetX(string txt)
    {
        string s = "";
        for (int i = 0; i < txt.Length && txt[i] != ','; i++)
            s += txt[i];
        return float.Parse(s);
    }

    float GetY(string txt)
    {
        string s = "";
        int i = 0;
        while (txt[i] != ',')
            i++;
        i++; //txt[i] is the first digit of the y coordinate now

        while (i < txt.Length)
        {
            s += txt[i];
            i++;
        }
        return float.Parse(s);
    }
    //###############################################################################################################################

    // Update is called once per frame
    void Update()
    {
        Target.transform.position = new Vector3(xPos, yPos);
    }

    void OnApplicationQuit()
    {
        if (receiveThread != null)
        {
            receiveThread.Abort();
            Debug.Log(receiveThread.IsAlive); //must be false
        }
    }
}