/*
 * Copyright (C) 2000 - 2024 Silverpeas
 *
 * 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.
 *
 * As a special exception to the terms and conditions of version 3.0 of the GPL, you may
 * redistribute this Program in connection with Free/Libre Open Source Software ("FLOSS")
 * applications as described in Silverpeas's FLOSS exception. You should have received a copy of the
 * text describing the FLOSS exception, and it is also available here:
 * "http://www.silverpeas.org/docs/core/legal/floss_exception.html"
 *
 * 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 <https://www.gnu.org/licenses/>.
 */
package org.silverpeas.components.quickinfo.portlets;

import java.io.IOException;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.GenericPortlet;
import javax.portlet.PortletException;
import javax.portlet.PortletMode;
import javax.portlet.PortletPreferences;
import javax.portlet.PortletRequestDispatcher;
import javax.portlet.PortletSession;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

import org.silverpeas.core.web.portlets.FormNames;
import org.silverpeas.components.quickinfo.model.QuickInfoService;
import org.silverpeas.components.quickinfo.model.QuickInfoServiceProvider;

import org.silverpeas.kernel.util.StringUtil;
import org.silverpeas.core.web.mvc.controller.MainSessionController;

public class QuickInfosPortlet extends GenericPortlet implements FormNames {

  public static final String PARAM_DISPLAY = "displayMode";

  @Override
  public void doView(RenderRequest request, RenderResponse response)
      throws PortletException {
    PortletSession session = request.getPortletSession();
    MainSessionController mainSessionCtrl = (MainSessionController) session
        .getAttribute(MainSessionController.MAIN_SESSION_CONTROLLER_ATT,
            PortletSession.APPLICATION_SCOPE);

    QuickInfoService service = QuickInfoServiceProvider.getQuickInfoService();

    request.setAttribute("QuickInfos", service.getPlatformNews(mainSessionCtrl.getUserId()));

    include(request, response, "portlet.jsp");
  }

  @Override
  public void doEdit(RenderRequest request, RenderResponse response) throws PortletException {
    include(request, response, "edit.jsp");
  }

  /**
   * Include "help" JSP.
   */
  @Override
  public void doHelp(RenderRequest request, RenderResponse response) throws PortletException {
    include(request, response, "help.jsp");
  }

  /**
   * Include a page.
   */
  private void include(RenderRequest request, RenderResponse response, String pageName)
      throws PortletException {
    response.setContentType(request.getResponseContentType());
    if (!StringUtil.isDefined(pageName)) {
      // assert
      throw new NullPointerException("null or empty page name");
    }
    try {
      PortletRequestDispatcher dispatcher =
          getPortletContext().getRequestDispatcher("/portlets/jsp/quickInfos/" + pageName);
      dispatcher.include(request, response);
    } catch (IOException ioe) {
      throw new PortletException(ioe);
    }
  }

  /*
   * Process Action.
   */
  @Override
  public void processAction(ActionRequest request, ActionResponse response)
      throws PortletException {
    if (request.getParameter(SUBMIT_FINISHED) != null) {
      processEditFinishedAction(request, response);
    } else if (request.getParameter(SUBMIT_CANCEL) != null) {
      processEditCancelAction(response);
    }
  }

  /*
   * Process the "cancel" action for the edit page.
   */
  private void processEditCancelAction(ActionResponse response)
      throws PortletException {
    response.setPortletMode(PortletMode.VIEW);
  }

  /*
   * Process the "finished" action for the edit page. Set the "url" to the value specified in the
   * edit page.
   */
  private void processEditFinishedAction(ActionRequest request, ActionResponse response)
      throws PortletException {

    String displayMode = request.getParameter(PARAM_DISPLAY);

    try {
      // store preference
      setUpPortletPreferences(request, displayMode);
      response.setPortletMode(PortletMode.VIEW);

    } catch (NumberFormatException e) {
      response.setRenderParameter(ERROR_BAD_VALUE, "true");
      response.setPortletMode(PortletMode.EDIT);
    }
  }

  private static void setUpPortletPreferences(ActionRequest request, String displayMode) throws PortletException {
    PortletPreferences pref = request.getPreferences();
    try {
      pref.setValue(PARAM_DISPLAY, displayMode);
      pref.store();
    } catch (IOException ioe) {
      throw new PortletException("QuickInfosPortlet.processEditFinishedAction", ioe);
    }
  }
}