import java.net.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Klient {
    public static final int PORT = 2000;
    private Socket socket;
    private BufferedReader in;
    private PrintWriter out;
    private BufferedReader kbd_reader;
    private Fönstret window;
    private JTextField outputField;

    private class ServerListener extends Thread {
	public void run() {
	    String lineFromServer;
	    try {
		while ((lineFromServer = in.readLine()) != null &&
		       !lineFromServer.equals("quit")) {
		    System.out.println("Från servern: " +
				       lineFromServer);
		    outputField.setText(lineFromServer);
		}
	    }
	    catch (IOException e) {
		System.out.println("Undantag fångat: " + e);
	    }
	}
    } // class ServerListener

    private class Fönstret extends JFrame {
	private PrintWriter out;
	private JLabel namnlabel = new JLabel("Namn: ");
	private JTextField namnfältet = new JTextField(15);
	JButton anslutningsknappen = new JButton("Anslut");
	JButton nerkopplingsknappen = new JButton("Koppla ner");
	JButton larmknappen = new JButton("Hjälp!");
	private JTextField larmfältet = new JTextField(20);

	public Fönstret(PrintWriter outParameter) {
	    super("Taxiklienten");
	    out = outParameter;
	    Container cp = getContentPane();
	    cp.setLayout(new FlowLayout());
	    cp.add(namnlabel);
	    cp.add(namnfältet);
	    cp.add(anslutningsknappen);
	    cp.add(nerkopplingsknappen);
	    cp.add(larmknappen);
	    cp.add(larmfältet);

	    anslutningsknappen.addActionListener(new ActionListener() {
		    public void actionPerformed(ActionEvent event) {
			out.println("Ni, min herre, är en apa.");
			System.out.println(
		            "Skickade en förolämpning.");
		    }
		});

	    nerkopplingsknappen.addActionListener(new ActionListener() {
		    public void actionPerformed(ActionEvent event) {
			out.println("Du är bäst!");
			System.out.println("Skickade beröm.");
		    }
		});

	    larmknappen.addActionListener(new ActionListener() {
		    public void actionPerformed(ActionEvent event) {
			out.println("Du är bäst!");
			System.out.println("Skickade beröm.");
		    }
		});

	    setSize(400, 100);
	    setVisible(true);
	}
    } // class Fönstret

    public Klient(String serverName) throws IOException {

	InetAddress addr = InetAddress.getByName(serverName);
	Socket socket = new Socket(addr, PORT);
	System.out.println("Den nya socketen: " + socket);
	in = new BufferedReader(
	    new InputStreamReader(
	        socket.getInputStream()));
	out = new PrintWriter(
	    new BufferedWriter(
	        new OutputStreamWriter(
		    socket.getOutputStream())), true);
	// true: PrintWriter is line buffered

        kbd_reader = new BufferedReader(
	    new InputStreamReader(System.in));


	window = new Fönstret(out);

	ServerListener t = new ServerListener();
	t.start();
    } // Klient

    void listen() throws IOException {
	String buf;
	while (true) {
	    buf = kbd_reader.readLine();
	    System.out.println("Från tangentbordet: " + buf);
	    System.out.println("Till servern: " + buf);
	    out.println(buf);
	}
    }

    public static void main(String[] args) throws IOException {
	Klient c;
	if (args.length >= 1)
	    c = new Klient(args[0]);
	else
	    c = new Klient(null);
	c.listen();
    } // main
} // class Klient