/**
 * Copyright (C) 2009 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.organization.webui.component;

import org.exoplatform.portal.config.UserACL;
import org.exoplatform.services.organization.Group;
import org.exoplatform.services.organization.GroupHandler;
import org.exoplatform.services.organization.OrganizationService;
import org.exoplatform.web.application.ApplicationMessage;
import org.exoplatform.webui.application.WebuiRequestContext;
import org.exoplatform.commons.serialization.api.annotations.Serialized;
import org.exoplatform.webui.config.annotation.ComponentConfig;
import org.exoplatform.webui.config.annotation.EventConfig;
import org.exoplatform.webui.core.UIApplication;
import org.exoplatform.webui.core.UIBreadcumbs;
import org.exoplatform.webui.core.UIComponent;
import org.exoplatform.webui.core.UIContainer;
import org.exoplatform.webui.core.UIPopupWindow;
import org.exoplatform.webui.core.UIBreadcumbs.LocalPath;
import org.exoplatform.webui.event.Event;
import org.exoplatform.webui.event.EventListener;

import java.util.Collection;
import java.util.List;

/**
 * Created by The eXo Platform SARL
 * Author : chungnv
 *          nguyenchung136@yahoo.com
 * Jun 23, 2006
 * 10:07:15 AM
 */
@ComponentConfig(template = "app:/groovy/organization/webui/component/UIGroupManagement.gtmpl", events = {
   @EventConfig(listeners = UIGroupManagement.AddGroupActionListener.class),
   @EventConfig(listeners = UIGroupManagement.DeleteGroupActionListener.class, confirm = "UIGroupManagement.deleteGroup"),
   @EventConfig(listeners = UIGroupManagement.SelectPathActionListener.class),
   @EventConfig(listeners = UIGroupManagement.SelectGroupMessageActionListener.class),
   @EventConfig(listeners = UIGroupManagement.EditGroupActionListener.class)

})
@Serialized
public class UIGroupManagement extends UIContainer
{

   public UIGroupManagement() throws Exception
   {
      UIBreadcumbs uiBreadcum = addChild(UIBreadcumbs.class, null, "BreadcumbsGroupManagement");
      uiBreadcum.setTemplate("system:/groovy/webui/core/UIBreadcumbs.gtmpl");
      addChild(UIGroupExplorer.class, null, null);
      addChild(UIGroupDetail.class, null, null);
      uiBreadcum.setBreadcumbsStyle("UIExplorerHistoryPath");
   }

   public void processRender(WebuiRequestContext context) throws Exception
   {
      super.processRender(context);
      List<UIComponent> children = this.getChildren();
      for (UIComponent com : children)
      {
         if (com instanceof UIPopupWindow)
            com.processRender(context);
      }
   }

   static public class SelectGroupMessageActionListener extends EventListener<UIGroupManagement>
   {
      public void execute(Event<UIGroupManagement> event) throws Exception
      {
         UIGroupManagement uiGroupManagement = event.getSource();
         WebuiRequestContext context = event.getRequestContext();
         UIApplication uiApp = context.getUIApplication();
         uiApp.addMessage(new ApplicationMessage("UIGroupManagement.msg.Edit", null));
      }
   }

   static public class AddGroupActionListener extends EventListener<UIGroupManagement>
   {
      public void execute(Event<UIGroupManagement> event) throws Exception
      {
         UIGroupManagement uiGroupManagement = event.getSource();
         UIGroupDetail uiGroupDetail = uiGroupManagement.getChild(UIGroupDetail.class);
         uiGroupDetail.setRenderedChild(UIGroupForm.class);
         UIGroupForm uiGroupForm = uiGroupDetail.getChild(UIGroupForm.class);
         uiGroupForm.setName("AddGroup");
         uiGroupForm.setGroup(null);
      }
   }

   static public class EditGroupActionListener extends EventListener<UIGroupManagement>
   {
      public void execute(Event<UIGroupManagement> event) throws Exception
      {
         UIGroupManagement uiGroupManagement = event.getSource();
         WebuiRequestContext context = event.getRequestContext();
         UIApplication uiApp = context.getUIApplication();

         UIGroupDetail uiGroupDetail = uiGroupManagement.getChild(UIGroupDetail.class);
         UIGroupExplorer uiGroupExplorer = uiGroupManagement.getChild(UIGroupExplorer.class);

         Group currentGroup = uiGroupExplorer.getCurrentGroup();
         if (currentGroup == null)
         {
            uiApp.addMessage(new ApplicationMessage("UIGroupManagement.msg.Edit", null));
            return;
         }
         uiGroupDetail.setRenderedChild(UIGroupForm.class);
         UIGroupForm uiGroupForm = uiGroupDetail.getChild(UIGroupForm.class);
         uiGroupForm.setName("EditGroup");
         uiGroupForm.setGroup(currentGroup);
      }
   }

   static public class DeleteGroupActionListener extends EventListener<UIGroupManagement>
   {
      public void execute(Event<UIGroupManagement> event) throws Exception
      {
         UIGroupManagement uiGroupManagement = event.getSource();
         WebuiRequestContext context = event.getRequestContext();
         UIApplication uiApp = context.getUIApplication();
         UIGroupExplorer uiGroupExplorer = uiGroupManagement.getChild(UIGroupExplorer.class);
         Group currentGroup = uiGroupExplorer.getCurrentGroup();
         if (currentGroup == null)
         {
            uiApp.addMessage(new ApplicationMessage("UIGroupManagement.msg.Edit", null));
            return;
         }
         UIGroupForm groupForm = uiGroupManagement.findFirstComponentOfType(UIGroupForm.class);
         if (groupForm.getGroupId() != null)
         {
            uiApp.addMessage(new ApplicationMessage("UIGroupManagement.msg.Delete", null));
            return;
         }
         OrganizationService service = uiGroupManagement.getApplicationComponent(OrganizationService.class);
         UserACL acl = uiGroupManagement.getApplicationComponent(UserACL.class);
         List<String> mandatories = acl.getMandatoryGroups();
         if (!mandatories.isEmpty() && isMandatory(service.getGroupHandler(), currentGroup, mandatories))
         {
            uiApp.addMessage(new ApplicationMessage("UIGroupManagement.msg.DeleteMandatory", null));
            return;
         }
         String parentId = currentGroup.getParentId();
         service.getGroupHandler().removeGroup(currentGroup, true);
         uiGroupExplorer.changeGroup(parentId);
      }

      private boolean isMandatory(GroupHandler dao, Group group, List<String> mandatories) throws Exception
      {
         if (mandatories.contains(group.getId()))
            return true;
         Collection<Group> children = dao.findGroups(group);
         for (Group g : children)
         {
            if (isMandatory(dao, g, mandatories))
               return true;
         }
         return false;
      }
   }

   static public class SelectPathActionListener extends EventListener<UIBreadcumbs>
   {
      public void execute(Event<UIBreadcumbs> event) throws Exception
      {
         UIBreadcumbs uiBreadcumbs = event.getSource();
         UIGroupManagement uiGroupManagement = uiBreadcumbs.getAncestorOfType(UIGroupManagement.class);
         UIGroupExplorer uiGroupExplorer = uiGroupManagement.getChild(UIGroupExplorer.class);
         LocalPath localPath = uiBreadcumbs.getSelectLocalPath();
         if (localPath != null)
         {
            String selectGroupId = uiBreadcumbs.getSelectLocalPath().getId();
            uiGroupExplorer.changeGroup(selectGroupId);
         }
         else
         {
            uiGroupExplorer.changeGroup(null);
         }

      }
   }

}
