import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Map.Entry;
import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.KeyEvent;

import lc.kra.system.keyboard.GlobalKeyboardHook;
import lc.kra.system.keyboard.event.GlobalKeyAdapter;
import lc.kra.system.keyboard.event.GlobalKeyEvent;

class Client {
    // initialize socket and input output streams
    private Socket socket = null;
    private DataInputStream input = null;
    private DataOutputStream out = null;
 
	private static boolean run = true;
    // constructor to put ip address and port
    public Client(String address, int port)
    {
        GlobalKeyboardHook keyboardHook = new GlobalKeyboardHook(true); // Use false here to switch to hook instead of raw input

		System.out.println("Global keyboard hook successfully started, press [escape] key to shutdown. Connected keyboards:");
		for (Entry<Long, String> keyboard : GlobalKeyboardHook.listKeyboards().entrySet()) {
			System.out.format("%d: %s\n", keyboard.getKey(), keyboard.getValue());
		}
		
		keyboardHook.addKeyListener(new GlobalKeyAdapter() {
		
			@Override 
			public void keyPressed(GlobalKeyEvent event) {
                try {
                    switch (event.getVirtualKeyCode()){
                        case GlobalKeyEvent.VK_RETURN:{
                            out.writeUTF("FOLLOW");
                        }break;
                        case GlobalKeyEvent.VK_NUMPAD8:
                        case GlobalKeyEvent.VK_UP:{
                            out.writeUTF("FORWARD");
                        }break;
                        case GlobalKeyEvent.VK_NUMPAD5:
                        case GlobalKeyEvent.VK_DOWN:{
                            out.writeUTF("BACKWARD");
                        }break;
                        case GlobalKeyEvent.VK_NUMPAD4:
                        case GlobalKeyEvent.VK_LEFT:{
                            out.writeUTF("LEFT");
                        }break;
                        case GlobalKeyEvent.VK_NUMPAD6:
                        case GlobalKeyEvent.VK_RIGHT:{
                            out.writeUTF("RIGHT");
                        }break;
                        case GlobalKeyEvent.VK_NUMPAD0:
                        case GlobalKeyEvent.VK_NUMPAD1:
                        case GlobalKeyEvent.VK_1:
                        case GlobalKeyEvent.VK_2:
                        case GlobalKeyEvent.VK_3:
                        case GlobalKeyEvent.VK_Z:{
                            out.writeUTF("FIGHT");
                        }break;
                        case GlobalKeyEvent.VK_NUMPAD3:
                        case 110:
                        case GlobalKeyEvent.VK_DELETE:{
                            out.writeUTF("CHILL");
                        }break;
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
				if (event.getVirtualKeyCode() == GlobalKeyEvent.VK_ESCAPE) {
					run = false;
				}
			}
			
			@Override 
			public void keyReleased(GlobalKeyEvent event) {
				System.out.println(event); 
			}
		});
        // establish a connection
        try {
            socket = new Socket(address, port);
            System.out.println("Connected");
 
            // takes input from terminal
            input = new DataInputStream(System.in);
 
            // sends output to the socket
            out = new DataOutputStream(
                socket.getOutputStream());
        }
        catch (IOException u) {
            System.out.println(u);
            return;
        }
 
        // string to read message from input
        String line = "";
 
        // keep reading until "Over" is input
        while (!line.equals("Over")) {
            try {
                line = input.readLine();
                out.writeUTF(line);
            }
            catch (IOException i) {
                System.out.println(i);
            }
        }
 
        // close the connection
        try {
            input.close();
            out.close();
            socket.close();
            keyboardHook.shutdownHook(); 
        }
        catch (IOException i) {
            System.out.println(i);
        }
    }
 
    public static void main(String args[])
    {
        Client client = new Client("127.0.0.1", 5000);
    }
}

class Server
{
    //initialize socket and input stream
    private Socket          socket   = null;
    private ServerSocket    server   = null;
    private DataInputStream in       =  null;
    Robot r;

	private void PressKeyWithModifier(int modifier,int keycode) {
		r.keyPress(modifier);
		r.keyPress(keycode);
		r.keyRelease(keycode);r.delay(100);
		r.keyRelease(modifier);
	}
 
    // constructor with port
    public Server(int port)
    {
        try {
            r = new Robot();
        } catch (AWTException e) {
            e.printStackTrace();
        }
        // starts server and waits for a connection
        try
        {
            server = new ServerSocket(port);
            System.out.println("Server started");
 
            System.out.println("Waiting for a client ...");
 
            socket = server.accept();
            System.out.println("Client accepted");
 
            // takes input from the client socket
            in = new DataInputStream(
                new BufferedInputStream(socket.getInputStream()));
 
            String line = "";
 
            // reads message from client until "Over" is sent
            while (!line.equals("Over"))
            {
                try
                {
                    line = in.readUTF();
                    switch (line){
                        case "FOLLOW":{
                            PressKeyWithModifier(KeyEvent.VK_CONTROL,KeyEvent.VK_7);
                        }break;
                        case "FORWARD":{
                            
                        }break;
                        case "BACKWARD":{
                            
                        }break;
                        case "LEFT":{
                            
                        }break;
                        case "RIGHT":{
                            
                        }break;
                        case "FIGHT":{
                            
                        }break;
                        case "CHILL":{
                            
                        }break;
                        default:{
                            System.out.println("Unknown command: "+line);
                        }
                    }
                }
                catch(IOException i)
                {
                    System.out.println(i);
                    break;
                }
            }
            System.out.println("Closing connection");
 
            // close connection
            socket.close();
            in.close();
        }
        catch(IOException i)
        {
            System.out.println(i);
        }
    }
 
    public static void main(String args[])
    {
        Server server = new Server(5000);
    }
}