package com.sunvote.xpadcomm;

import android.os.Handler;
import android.os.HandlerThread;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;

import com.sunvote.util.LogUtil;

/**
 * Created by Elvis on 2017/12/25 15:38
 * Email:Eluis@psunsky.com
 * 版权所有：长沙中天电子设计开发有限公司
 * Description: 人大通用版XPadAppRD
 * 下载文件发送数据请求线程
 */
public class DownloadFileSendThread extends HandlerThread {

    private static String TAG = "DownloadFileSendThread" ;

    private DatagramSocket udpSocket ;
    private DatagramPacket packet;
    private Handler handler;

    public DownloadFileSendThread() {
        super(TAG);
        start();
        handler = new Handler(getLooper());
    }

    public boolean sendData(final byte flag,final byte type,final int index,final String ip,final int port){
        handler.post(new Runnable() {
            @Override
            public void run() {
                byte[] buffer = new byte[10];
                buffer[0] = (byte) 0xFE;
                buffer[1] = (byte) 0xAA;
                buffer[2] = flag;
                buffer[3] = type;//
                buffer[4] = (byte) ((index >> 8) & 0xff);
                buffer[5] = (byte) (index & 0xff);
                InetAddress servInetAddress;
                try {
                    servInetAddress = InetAddress.getByName(ip);
                } catch (Exception e) {
                    LogUtil.e(TAG, e);
                    return ;
                }
                LogUtil.i(TAG,"sendNextData",buffer);
                packet = new DatagramPacket(buffer, buffer.length, servInetAddress, port);
                handler.removeCallbacks(task);
                handler.post(task);
            }
        });
        return true;
    }

    private Runnable task = new Runnable() {
        @Override
        public void run() {
            if (handler != null) {
                handler.removeCallbacks(this);
                if (udpSocket == null) {
                    try {
                        udpSocket = new DatagramSocket();
                    } catch (SocketException e) {
                        LogUtil.e(TAG, e);
                    }
                }
                if (udpSocket != null && packet != null) {
                    try {
                        LogUtil.i(TAG,"send to server",packet.getData());
                        udpSocket.send(packet);
                    } catch (IOException e) {
                        LogUtil.e(TAG, e);
                        udpSocket.close();
                        udpSocket = null;
                    }
                }
            }
            if(handler != null){
                handler.postDelayed(this, 1000);
            }
        }
    };

    public void close(){
        handler.removeCallbacks(task);
        if(udpSocket != null){
            udpSocket.close();
            udpSocket = null;
        }
        handler = null;
        packet = null;
        quit();
    }
}