/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, version 2 of the License.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. Look for COPYING file in the top folder.

 * If not, see http://opensource.org/licenses/GPL-2.0.

 */

package org.apidesign.bck2brwsr.launcher.fximpl;

import com.sun.javafx.scene.web.Debugger;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.net.InetAddress;

import java.net.Socket;

import java.nio.charset.StandardCharsets;

import java.util.logging.Level;

import java.util.logging.Logger;

import javafx.application.Platform;

import javafx.scene.web.WebEngine;

import javafx.util.Callback;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

final class FXInspect implements Runnable {

    private static final Logger LOG = Logger.getLogger(FXInspect.class.getName());

    private final WebEngine engine;

    private final ObjectInputStream input;

    private FXInspect(WebEngine engine, int port) throws IOException {

        this.engine = engine;

        Socket socket = new Socket(InetAddress.getByName(null), port);

        ObjectOutputStream output = new ObjectOutputStream(socket.getOutputStream());

        this.input = new ObjectInputStream(socket.getInputStream());

        initializeDebugger(output);

    }

    static boolean initialize(WebEngine engine) {

        final int inspectPort = Integer.getInteger("netbeans.inspect.port", -1); // NOI18N

        if (inspectPort != -1) {

            try {

                FXInspect inspector = new FXInspect(engine, inspectPort);

                Thread t = new Thread(inspector, "FX<->NetBeans Inspector");

                t.start();

                return true;

            } catch (IOException ex) {

                LOG.log(Level.INFO, "Cannot connect to NetBeans IDE to port " + inspectPort, ex); // NOI18N

            }

        }

        return false;

    }

    private void initializeDebugger(final ObjectOutputStream output) {

        Platform.runLater(new Runnable() {

            @Override

            public void run() {

                Debugger debugger = engine.impl_getDebugger();

                debugger.setEnabled(true);

                debugger.setMessageCallback(new Callback<String,Void>() {

                    @Override

                    public Void call(String message) {

                        try {

                            byte[] bytes = message.getBytes(StandardCharsets.UTF_8);

                            output.writeInt(bytes.length);

                            output.write(bytes);

                            output.flush();

                        } catch (IOException ioex) {

                            ioex.printStackTrace();

                        }

                        return null;

                    }

                });

            }

        });

    }

    @Override

    public void run() {

        try {

            while (true) {

                int length = input.readInt();

                byte[] bytes = new byte[length];

                input.readFully(bytes);

                final String message = new String(bytes, StandardCharsets.UTF_8);

                Platform.runLater(new Runnable() {

                    @Override

                    public void run() {

                        engine.impl_getDebugger().sendMessage(message);

                    }

                });

            }

        } catch (IOException ioex) {

            ioex.printStackTrace();

        }

    }

}