/**
 * MailArchiver is an application that provides services for storing and managing e-mail messages through a Web Services SOAP interface.
 * Copyright (C) 2012  Marcio Andre Scholl Levien and Fernando Alberto Reuter Wendt and Jose Ronaldo Nogueira Fonseca Junior
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/******************************************************************************\
*
*  This product was developed by
*
*        SERVIÇO FEDERAL DE PROCESSAMENTO DE DADOS (SERPRO),
*
*  a government company established under Brazilian law (5.615/70),
*  at Department of Development of Porto Alegre.
*
\******************************************************************************/

package serpro.mailarchiver.view.admin;

import serpro.mailarchiver.service.Settings;
import serpro.mailarchiver.service.find.FBinaryBody;
import serpro.mailarchiver.service.find.FFolder;
import serpro.mailarchiver.service.find.FMessage;
import serpro.mailarchiver.service.web.ArchiveServices;
import serpro.mailarchiver.util.ArchiveServicesProxyFactory;
import serpro.mailarchiver.util.ConsoleMediator;
import serpro.mailarchiver.util.Environment;
import serpro.mailarchiver.util.Logger;
import serpro.mailarchiver.util.RequestContextInheritingThread;
import serpro.mailarchiver.view.BaseComponent;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.jdo.JdoTransactionManager;

import com.vaadin.ui.VerticalLayout;

import org.vaadin.console.Console;

import com.eventrouter.DispatchContext;

import bsh.Interpreter;

public class Terminal extends BaseComponent.Panel {

    private static final Logger log = Logger.getLocalLogger();

    @Autowired private Environment environment;
    @Autowired private FFolder findFolder;
    @Autowired private FMessage findMessage;
    @Autowired private FBinaryBody findBinaryBody;
    @Autowired private ArchiveServices archiveServices;
    @Autowired private ArchiveServicesProxyFactory archiveServicesProxyFactory;
    @Autowired private JdoTransactionManager txManager;
    @Autowired private DispatchContext dispatchContext;
    @Autowired private Settings settings;

    private Console console;
    private ConsoleMediator mediator;
    private Interpreter interpreter;

    Terminal() {
        new TerminalController(getDisplayId());
    }

    @Override
    public final String getDisplayId() {
        return "terminal";
    }

    @Override
    public Terminal init() {

        setSizeFull();
        setScrollable(true);

        VerticalLayout panelVLo = new VerticalLayout();
        panelVLo.setMargin(false);
        panelVLo.setSpacing(false);
        panelVLo.setSizeFull();

        console = new Console();
        console.setPs("");
        console.setCols(400);
        console.setRows(100);
        console.setMaxBufferSize(4000);
        console.setGreeting("Welcome to MailArchiver BeanShell Console.");
        console.setPrintPromptOnInput(true);
        console.reset();
        console.focus();

        panelVLo.addComponent(console);

        setContent(panelVLo);

        mediator = new ConsoleMediator(console);
        interpreter = new Interpreter(mediator) {
            {
                //TRACE = true;
            }
            @Override
            public void run() {
                try {
                    super.run();
                }
                catch(Throwable t) {
                    log.error(t, "terminal");
                }
            }
        };

        interpreter.setExitOnEOF(false);

        try {
            interpreter.set("environment", environment);
            interpreter.set("findFolder", findFolder);
            interpreter.set("findMessage", findMessage);
            interpreter.set("findBinaryBody", findBinaryBody);
            interpreter.set("archiveServices", archiveServices);
            interpreter.set("archiveServicesProxy", archiveServicesProxyFactory.getProxy());
            interpreter.set("txManager", txManager);
            interpreter.set("dispatchContext", dispatchContext);
            interpreter.set("settings", settings);

            interpreter.eval("import serpro.mailarchiver.util.transaction.ReadOnlyTx");
            interpreter.eval("import serpro.mailarchiver.util.transaction.ReadWriteTx");
        }
        catch(Exception e) {
            log.error(e, "Interpreter setup");
        }

        new RequestContextInheritingThread(interpreter).start();

        interpreter.getNameSpace().importCommands("serpro.mailarchiver.util.bshcommands");

        return this;
    }
}