/**
 * Copyright (C) 2012 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.exoplatform.platform.component;


import org.exoplatform.platform.navigation.component.help.HelpService;
import org.exoplatform.platform.navigation.component.help.Helper;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import org.exoplatform.webui.config.annotation.ComponentConfig;
import org.exoplatform.webui.core.UIPortletApplication;
import org.exoplatform.webui.core.lifecycle.UIApplicationLifecycle;
import org.exoplatform.social.core.space.spi.SpaceService;
/**
 * @author <a href="kmenzli@exoplatform.com">Kmenzli</a>
 * @date 05/11/12
 */

@ComponentConfig(lifecycle = UIApplicationLifecycle.class, template = "app:/groovy/platformNavigation/portlet/UIHelpPlatformToolbarPortlet/UIHelpPlatformToolbarPortlet.gtmpl")
public class UIHelpPlatformToolbarPortlet extends UIPortletApplication {

    private static final Log LOG = ExoLogger.getExoLogger(UIHelpPlatformToolbarPortlet.class);
    private String currentNavigation = "";
    private String helpPage = HelpService.DEFAULT_HELP_PAGE;
    private HelpService helpService = null;
    private SpaceService spaceService=null;
    public UIHelpPlatformToolbarPortlet() throws Exception {
        helpService = getApplicationComponent(HelpService.class);
        try {
            spaceService = getApplicationComponent(SpaceService.class);
        } catch (Exception exception) {
            // spaceService should be "null" because the Social profile isn't activated
            LOG.warn("SpaceService not loaded by the kernel please activate [social] profile");
        }
    }


    public String getHelpPage() {

        currentNavigation = Helper.getCurrentNavigation(spaceService);

        if (Helper.present(currentNavigation) && ((helpService != null))) {

            helpPage = helpService.fetchHelpPage(currentNavigation);

        }

        if (LOG.isDebugEnabled()) {
            LOG.debug("The navigation [[ " + currentNavigation + " ]] has as page help [[ " + helpPage + " ]]");
        }

        return helpPage;
    }


}
