/**
 * 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 org.springframework.beans.factory.annotation.Autowired;

import static com.eventrouter.MessagePublisher.*;
import com.eventrouter.annotation.Subscribe;

import com.vaadin.terminal.Sizeable;
import com.vaadin.terminal.ThemeResource;
import com.vaadin.terminal.gwt.client.ui.AlignmentInfo.Bits;
import com.vaadin.terminal.gwt.server.HttpServletRequestListener;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.ComponentContainer;
import com.vaadin.ui.Embedded;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.LoginForm;
import com.vaadin.ui.LoginForm.LoginEvent;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;
import com.vaadin.ui.Window.Notification;
import com.vaadin.ui.themes.Reindeer;

import com.github.wolfie.refresher.Refresher;
import com.github.wolfie.refresher.Refresher.RefreshListener;
import com.github.wolfie.sessionguard.SessionGuard;

import serpro.mailarchiver.service.dto.TSession;
import serpro.mailarchiver.service.web.ArchiveServices;
import serpro.mailarchiver.service.web.ServiceFault;
import serpro.mailarchiver.session.Session;
import serpro.mailarchiver.session.SessionMap;
import serpro.mailarchiver.util.Logger;
import serpro.mailarchiver.view.BaseApplication;

public class AdminConsoleApp extends BaseApplication implements HttpServletRequestListener {

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

    @Autowired
    private ArchiveServices archiveServices;

    private Session session;

    private Window mainWindow;

    private VerticalLayout loginVLo;
    private VerticalLayout mainWindowVLo;

    private Toolbar toolbar;

    private Config config;
    private Explore explore;
    private Search search;
    private Help help;
    private Upload upload;
    private ImportGears importGears;
    private Terminal terminal;

    private ComponentContainer currentContent;

    public static AdminConsoleApp getInstance() {
        return (AdminConsoleApp) BaseApplication.getInstance();
    }

    public Session getSession() {
        return session;
    }

    @Override
    public void init() {

        setTheme("console");

        mainWindow = new Window("MailArchiver Admin Console");
        mainWindow.setName("admin_console");

        setMainWindow(mainWindow);

        createLoginContent();
    }

    @Subscribe({"/mailarchiver/logout"})
    private void createLoginContent() {

        loginVLo = new VerticalLayout();
        loginVLo.addStyleName(Reindeer.LAYOUT_BLACK);
        loginVLo.setSizeFull();
        loginVLo.setMargin(true);

        GridLayout glo = new GridLayout(2, 2);
        glo.addStyleName(Reindeer.LAYOUT_WHITE);
        glo.setWidth("300px");
        glo.setHeight("220px");
        glo.setMargin(true);
        glo.setSpacing(false);

        Embedded logo = new Embedded("", new ThemeResource("toolbar/img/mailarchiver_logo.png"));
        logo.setSizeUndefined();
        glo.addComponent(logo, 0, 0);
        glo.setComponentAlignment(logo, Alignment.TOP_CENTER);

        Label caption = new Label("<h2>Admin<br>Console</h2>");
        caption.setSizeUndefined();
        caption.setContentMode(Label.CONTENT_XHTML);
        glo.addComponent(caption, 1, 0);
        glo.setComponentAlignment(caption, Alignment.MIDDLE_LEFT);

        LoginForm login = new AdminConsoleLoginForm();
        login.setSizeFull();
        login.setUsernameCaption("User: ");
        login.setPasswordCaption("Password: ");

        login.addListener(new LoginForm.LoginListener() {
            @Override
            public void onLogin(LoginEvent event) {
                String username = event.getLoginParameter("username");
                String password = event.getLoginParameter("password");

                try {
                    TSession sessionDto = archiveServices.login(username, password, null, null);

                    if(sessionDto != null) {
                        session = SessionMap.get(sessionDto.getId());
                        createMainContent();
                        showHumanizedNotification("New session for user " + username);
                    }
                    else {
                        showErrorNotification("Wrong password or unknown user");
                    }
                }
                catch (ServiceFault ex) {
                    log.error(ex);
                }
            }
        });

        glo.addComponent(login, 0, 1, 1, 1);
        glo.setRowExpandRatio(1, 1.0f);

        loginVLo.addComponent(glo);
        loginVLo.setComponentAlignment(glo, new Alignment(
              Bits.ALIGNMENT_VERTICAL_CENTER | Bits.ALIGNMENT_HORIZONTAL_CENTER));

        mainWindow.setContent(loginVLo);
    }

    private void createMainContent() {

        mainWindowVLo = new VerticalLayout();
        mainWindowVLo.setMargin(false);
        mainWindowVLo.setSpacing(false);

        final SessionGuard sessionGuard = new SessionGuard();
        sessionGuard.setKeepalive(true);
        mainWindowVLo.addComponent(sessionGuard);

        final Refresher refresher = new Refresher();
        refresher.addListener(new RefreshListener() {
            @Override
            public void refresh(Refresher source) {
                publish("/mailarchiver/refresh");
            }
        });
        mainWindowVLo.addComponent(refresher);

        toolbar = new Toolbar();
        mainWindowVLo.addComponent(toolbar);

//        config = new Config();
//        config.setHeight(0, Sizeable.UNITS_PIXELS);
//        mainWindowVLo.addComponent(config);

//        explore = new Explore();
//        explore.setHeight(0, Sizeable.UNITS_PIXELS);
//        mainWindowVLo.addComponent(explore);

        search = new Search();
        search.setHeight(0, Sizeable.UNITS_PIXELS);
        mainWindowVLo.addComponent(search);

//        help = new Help();
//        help.setHeight(0, Sizeable.UNITS_PIXELS);
//        mainWindowVLo.addComponent(help);

        upload = new Upload();
        upload.setHeight(0, Sizeable.UNITS_PIXELS);
        mainWindowVLo.addComponent(upload);

        importGears = new ImportGears();
        importGears.setHeight(0, Sizeable.UNITS_PIXELS);
        mainWindowVLo.addComponent(importGears);

        terminal = new Terminal();
        terminal.setHeight(0, Sizeable.UNITS_PIXELS);
        mainWindowVLo.addComponent(terminal);

        mainWindow.setContent(mainWindowVLo);

        showImportGears();
    }

    private void setContent(ComponentContainer newContent) {
        if((newContent != null) && (newContent != currentContent)) {

            if(currentContent != null) {
                currentContent.setHeight(0, Sizeable.UNITS_PIXELS);
            }

            newContent.setHeight(Sizeable.SIZE_UNDEFINED, Sizeable.UNITS_PIXELS);
            currentContent = newContent;
            mainWindowVLo.requestRepaintAll();
        }
    }


    //<editor-fold defaultstate="collapsed" desc=" switch panel ">

    @Subscribe({"/mailarchiver/action/show_config"})
    private void showConfig() {
        setContent(config);
    }

    @Subscribe({"/mailarchiver/action/show_explore"})
    private void showExplore() {
        setContent(explore);
    }

    @Subscribe({"/mailarchiver/action/show_search"})
    private void showSearch() {
        setContent(search);
    }

    @Subscribe({"/mailarchiver/action/show_help"})
    private void showHelp() {
        setContent(help);
    }

    @Subscribe({"/mailarchiver/action/show_upload"})
    private void showUpload() {
        setContent(upload);
    }

    @Subscribe({"/mailarchiver/action/show_importGears"})
    private void showImportGears() {
        setContent(importGears);
    }

    @Subscribe({"/mailarchiver/action/show_terminal"})
    private void showTerminal() {
        setContent(terminal);
    }
    //</editor-fold>


    //<editor-fold defaultstate="collapsed" desc=" notifications ">

    @Subscribe({"/mailarchiver/notification/error"})
    private void showErrorNotification(String caption) {
        Notification n = new Notification(caption, Notification.TYPE_ERROR_MESSAGE);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/error"})
    private void showErrorNotification(String caption, String description) {
        Notification n = new Notification(caption, Notification.TYPE_ERROR_MESSAGE);
        n.setDescription(description);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/error"})
    private void showErrorNotification(String caption, int position) {
        Notification n = new Notification(caption, Notification.TYPE_ERROR_MESSAGE);
        n.setPosition(position);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/error"})
    private void showErrorNotification(String caption, String description, int position) {
        Notification n = new Notification(caption, Notification.TYPE_ERROR_MESSAGE);
        n.setDescription(description);
        n.setPosition(position);
        getMainWindow().showNotification(n);
    }

    //--------------------------------------------------------------------------
    @Subscribe({"/mailarchiver/notification/warning"})
    private void showWarningNotification(String caption) {
        Notification n = new Notification(caption, Notification.TYPE_WARNING_MESSAGE);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/warning"})
    private void showWarningNotification(String caption, String description) {
        Notification n = new Notification(caption, Notification.TYPE_WARNING_MESSAGE);
        n.setDescription(description);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/warning"})
    private void showWarningNotification(String caption, int position) {
        Notification n = new Notification(caption, Notification.TYPE_WARNING_MESSAGE);
        n.setPosition(position);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/warning"})
    private void showWarningNotification(String caption, String description, int position) {
        Notification n = new Notification(caption, Notification.TYPE_WARNING_MESSAGE);
        n.setDescription(description);
        n.setPosition(position);
        getMainWindow().showNotification(n);
    }

    //--------------------------------------------------------------------------
    @Subscribe({"/mailarchiver/notification/humanized"})
    private void showHumanizedNotification(String caption) {
        Notification n = new Notification(caption, Notification.TYPE_HUMANIZED_MESSAGE);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/humanized"})
    private void showHumanizedNotification(String caption, String description) {
        Notification n = new Notification(caption, Notification.TYPE_HUMANIZED_MESSAGE);
        n.setDescription(description);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/humanized"})
    private void showHumanizedNotification(String caption, int position) {
        Notification n = new Notification(caption, Notification.TYPE_HUMANIZED_MESSAGE);
        n.setPosition(position);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/humanized"})
    private void showHumanizedNotification(String caption, String description, int position) {
        Notification n = new Notification(caption, Notification.TYPE_HUMANIZED_MESSAGE);
        n.setDescription(description);
        n.setPosition(position);
        getMainWindow().showNotification(n);
    }

    //--------------------------------------------------------------------------
    @Subscribe({"/mailarchiver/notification/tray"})
    private void showTrayNotification(String caption) {
        Notification n = new Notification(caption, Notification.TYPE_TRAY_NOTIFICATION);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/tray"})
    private void showTrayNotification(String caption, String description) {
        Notification n = new Notification(caption, Notification.TYPE_TRAY_NOTIFICATION);
        n.setDescription(description);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/tray"})
    private void showTrayNotification(String caption, int position) {
        Notification n = new Notification(caption, Notification.TYPE_TRAY_NOTIFICATION);
        n.setPosition(position);
        getMainWindow().showNotification(n);
    }

    @Subscribe({"/mailarchiver/notification/tray"})
    private void showTrayNotification(String caption, String description, int position) {
        Notification n = new Notification(caption, Notification.TYPE_TRAY_NOTIFICATION);
        n.setDescription(description);
        n.setPosition(position);
        getMainWindow().showNotification(n);
    }
    //</editor-fold>


}