/**

 * 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;

import java.awt.Desktop;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.Writer;

import java.net.URI;

import java.net.URL;

import java.util.Enumeration;

import org.apidesign.vm4brwsr.Bck2Brwsr;

import org.glassfish.grizzly.PortRange;

import org.glassfish.grizzly.http.server.HttpHandler;

import org.glassfish.grizzly.http.server.HttpServer;

import org.glassfish.grizzly.http.server.NetworkListener;

import org.glassfish.grizzly.http.server.Request;

import org.glassfish.grizzly.http.server.Response;

import org.glassfish.grizzly.http.server.ServerConfiguration;

/**

 * Lightweight server to launch Bck2Brwsr applications in real browser.

 */

public class Bck2BrwsrLauncher {

    public static void main( String[] args ) throws Exception {

        HttpServer server = HttpServer.createSimpleServer(".", new PortRange(8080, 65535));

        final ClassLoader loader = Bck2BrwsrLauncher.class.getClassLoader();

        final ServerConfiguration conf = server.getServerConfiguration();

        conf.addHttpHandler(new HttpHandler() {

            @Override

            public void service(Request request, Response response) throws Exception {

                response.setContentType("text/html");

                OutputStream os = response.getOutputStream();

                InputStream is = Bck2BrwsrLauncher.class.getResourceAsStream("console.xhtml");

                for (;;) {

                    int ch = is.read();

                    if (ch == -1) {

                        break;

                    }

                    os.write(ch);

                }

            }

        }, "/console");

        conf.addHttpHandler(new HttpHandler() {

            @Override

            public void service(Request request, Response response) throws Exception {

                response.setCharacterEncoding("UTF-8");

                response.setContentType("text/javascript");

                Bck2Brwsr.generate(response.getWriter(), loader);

            }

        }, "/bck2brwsr.js");

        conf.addHttpHandler(new HttpHandler() {

            @Override

            public void service(Request request, Response response) throws Exception {

                String res = request.getHttpHandlerPath();

                if (res.startsWith("/")) {

                    res = res.substring(1);

                }

                Enumeration<URL> en = loader.getResources(res);

                URL u = null;

                while (en.hasMoreElements()) {

                    u = en.nextElement();

                }

                if (u == null) {

                    response.setError();

                    response.setDetailMessage("Can't find resource " + res);

                }

                response.setContentType("text/javascript");

                InputStream is = u.openStream();

                Writer w = response.getWriter();

                w.append("[");

                for (int i = 0;; i++) {

                    int b = is.read();

                    if (b == -1) {

                        break;

                    }

                    if (i > 0) {

                        w.append(", ");

                    }

                    if (i % 20 == 0) {

                        w.write("\n");

                    }

                    if (b > 127) {

                        b = b - 256;

                    }

                    w.append(Integer.toString(b));

                }

                w.append("\n]");

            }

        }, "/classes/");

        server.start();

        NetworkListener listener = server.getListeners().iterator().next();

        int port = listener.getPort();

        URI uri = new URI("http://localhost:" + port + "/console");

        try {

            Desktop.getDesktop().browse(uri);

        } catch (UnsupportedOperationException ex) {

            String[] cmd = { 

                "xdg-open", uri.toString()

            };

            Runtime.getRuntime().exec(cmd).waitFor();

        }

        System.in.read();

    }

}