/**
 * 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.navigation.webui.component;

import org.exoplatform.commons.utils.ObjectPageList;
import org.exoplatform.navigation.webui.TreeNode;
import org.exoplatform.portal.application.PortalRequestContext;
import org.exoplatform.portal.config.UserACL;
import org.exoplatform.portal.mop.SiteKey;
import org.exoplatform.portal.mop.SiteType;
import org.exoplatform.portal.mop.navigation.NavigationContext;
import org.exoplatform.portal.mop.navigation.NavigationService;
import org.exoplatform.portal.mop.navigation.Scope;
import org.exoplatform.portal.mop.user.UserNavigation;
import org.exoplatform.portal.mop.user.UserPortal;
import org.exoplatform.portal.webui.navigation.UIAddGroupNavigation;
import org.exoplatform.portal.webui.navigation.UIPageNavigationForm;
import org.exoplatform.portal.webui.util.Util;
import org.exoplatform.portal.webui.workspace.UIMaskWorkspace;
import org.exoplatform.portal.webui.workspace.UIPortalApplication;
import org.exoplatform.portal.webui.workspace.UIWorkingWorkspace;
import org.exoplatform.services.organization.OrganizationService;
import org.exoplatform.web.application.ApplicationMessage;
import org.exoplatform.webui.application.WebuiRequestContext;
import org.exoplatform.webui.config.annotation.ComponentConfig;
import org.exoplatform.webui.config.annotation.ComponentConfigs;
import org.exoplatform.webui.config.annotation.EventConfig;
import org.exoplatform.webui.core.UIApplication;
import org.exoplatform.webui.core.UIContainer;
import org.exoplatform.webui.core.UIPopupWindow;
import org.exoplatform.webui.core.UIRepeater;
import org.exoplatform.webui.core.UIVirtualList;
import org.exoplatform.webui.core.lifecycle.UIFormLifecycle;
import org.exoplatform.webui.event.Event;
import org.exoplatform.webui.event.Event.Phase;
import org.exoplatform.webui.event.EventListener;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.UUID;

/*
 * Created by The eXo Platform SAS
 * Author : tam.nguyen
 *          tamndrok@gmail.com
 * May 28, 2009  
 */
@ComponentConfigs({
   @ComponentConfig(template = "app:/groovy/navigation/webui/component/UIGroupNavigationManagement.gtmpl", events = {
      @EventConfig(listeners = UIGroupNavigationManagement.EditNavigationActionListener.class),
      @EventConfig(listeners = UIGroupNavigationManagement.EditPropertiesActionListener.class),
      @EventConfig(listeners = UIGroupNavigationManagement.AddNavigationActionListener.class),
      @EventConfig(listeners = UIGroupNavigationManagement.DeleteNavigationActionListener.class, confirm = "UIGroupNavigationManagement.Delete.Confirm")}),
   @ComponentConfig(id = "UIGroupNavigationGrid", type = UIRepeater.class, template = "app:/groovy/navigation/webui/component/UINavigationGrid.gtmpl"),
   @ComponentConfig(type = UIPageNodeForm.class, lifecycle = UIFormLifecycle.class, template = "system:/groovy/webui/form/UIFormTabPane.gtmpl", events = {
      @EventConfig(listeners = UIPageNodeForm.SaveActionListener.class),
      @EventConfig(listeners = UIGroupNavigationManagement.BackActionListener.class, phase = Phase.DECODE),
      @EventConfig(listeners = UIPageNodeForm.ChangeLanguageActionListener.class, phase = Phase.DECODE),
      @EventConfig(listeners = UIPageNodeForm.SwitchLabelModeActionListener.class, phase = Phase.DECODE),
      @EventConfig(listeners = UIPageNodeForm.SwitchPublicationDateActionListener.class, phase = Phase.DECODE),
      @EventConfig(listeners = UIPageNodeForm.SwitchVisibleActionListener.class, phase = Phase.DECODE),
      @EventConfig(listeners = UIPageNodeForm.ClearPageActionListener.class, phase = Phase.DECODE),
      @EventConfig(listeners = UIPageNodeForm.CreatePageActionListener.class, phase = Phase.DECODE)}),
   @ComponentConfig(type = UIPopupWindow.class, template = "system:/groovy/webui/core/UIPopupWindow.gtmpl",
      events = @EventConfig(listeners = UIGroupNavigationManagement.CloseActionListener.class, name = "ClosePopup"))})
public class UIGroupNavigationManagement extends UIContainer
{

   private UINavigationManagement naviManager;
   
   //set navigationScope to GrandChildren for default value
   private Scope navigationScope = Scope.GRANDCHILDREN;

   public UIGroupNavigationManagement() throws Exception
   {
      UIVirtualList virtualList = addChild(UIVirtualList.class, null, "GroupNavigationList");
      virtualList.setPageSize(4);
      UIRepeater repeater = createUIComponent(UIRepeater.class, "UIGroupNavigationGrid", null);
      virtualList.setUIComponent(repeater);
      UIPopupWindow editNavigation = addChild(UIPopupWindow.class, null, null);
      editNavigation.setId(editNavigation.getId() + "-" + UUID.randomUUID().toString().replaceAll("-", ""));
   }

   public void loadNavigations() throws Exception
   {
      UserPortal userPortal = Util.getPortalRequestContext().getUserPortalConfig().getUserPortal();

      List<UserNavigation> allNavs = userPortal.getNavigations();
      List<UserNavigation> groupNav = new ArrayList<UserNavigation>();
      for (UserNavigation nav : allNavs)
      {
         if (nav.getKey().getType().equals(SiteType.GROUP) && nav.isModifiable())
         {
            groupNav.add(nav);
         }
      }

      UIVirtualList virtualList = getChild(UIVirtualList.class);                  
      virtualList.dataBind(new ObjectPageList<UserNavigation>(groupNav, groupNav.size()));
   }
   
   public void setScope(Scope scope)
   {
      this.navigationScope = scope;
   }
   
   public Scope getScope()
   {
      return this.navigationScope;
   }

   /**
    * User has right to add navigation to a group in below cases
    * 
    * 1. He/She is member of admin groups
    * 
    * 2. He/She is manager of the group
    * 
    * @param 
    * @return
    */
   private boolean userHasRightToAddNavigation()
   {
      PortalRequestContext pcontext = Util.getPortalRequestContext();
      String remoteUser = pcontext.getRemoteUser();
      if (remoteUser == null)
      {
         return false;
      }

      UserACL userACL = this.getApplicationComponent(UserACL.class);
      if (userACL.isUserInGroup(userACL.getAdminGroups()))
      {
         return true;
      }

      OrganizationService orgService = this.getApplicationComponent(OrganizationService.class);
      try
      {
         Collection<?> groups = orgService.getGroupHandler().findGroupByMembership(remoteUser, userACL.getMakableMT());
         return groups != null && groups.size() > 0;
      }
      catch (Exception ex)
      {
         return false;
      }
   }

   static public abstract class BaseEditAction extends EventListener<UIGroupNavigationManagement>
   {
      public void execute(Event<UIGroupNavigationManagement> event) throws Exception
      {
         UserPortal userPortal = Util.getPortalRequestContext().getUserPortalConfig().getUserPortal();
         UIGroupNavigationManagement uicomp = event.getSource();
         WebuiRequestContext context = event.getRequestContext();
         UIApplication uiApplication = context.getUIApplication();

         // get navigation id
         String groupName = event.getRequestContext().getRequestParameter(OBJECTID);
         SiteKey siteKey = SiteKey.group(groupName);
         
         // check edit permission, ensure that user has edit permission on that
         // navigation
         UserACL userACL = uicomp.getApplicationComponent(UserACL.class);
         if (!userACL.hasEditPermissionOnNavigation(siteKey))
         {
            uiApplication.addMessage(new ApplicationMessage("UIGroupNavigationManagement.msg.Invalid-editPermission", null));
            return;
         }

         UserNavigation navigation = userPortal.getNavigation(siteKey);
         if (navigation == null)
         {
            uiApplication.addMessage(new ApplicationMessage("UIGroupNavigationManagement.msg.navigation-not-exist", null));
            UIWorkingWorkspace uiWorkingWS = Util.getUIPortalApplication().getChild(UIWorkingWorkspace.class);
            uiWorkingWS.updatePortletsByName("UserToolbarGroupPortlet");       
            return;
         }

         doEdit(navigation, event);
      }

      protected abstract void doEdit(UserNavigation navigation, Event<UIGroupNavigationManagement> event) throws Exception;
   }
   
   static public class EditNavigationActionListener extends BaseEditAction
   {
      @Override
      protected void doEdit(UserNavigation nav, Event<UIGroupNavigationManagement> event) throws Exception
      {         
         UserPortal userPortal = Util.getPortalRequestContext().getUserPortalConfig().getUserPortal();
         UIGroupNavigationManagement uicomp = event.getSource();
         SiteKey siteKey = nav.getKey();

         UIPopupWindow popUp = uicomp.getChild(UIPopupWindow.class);
         UINavigationManagement naviManager = popUp.createUIComponent(UINavigationManagement.class, null, null, popUp);
         uicomp.naviManager = naviManager;
         
         naviManager.setSiteKey(siteKey);

         UINavigationNodeSelector selector = naviManager.getChild(UINavigationNodeSelector.class);
         selector.setEdittedNavigation(nav);
         selector.setUserPortal(userPortal);
         selector.setScope(uicomp.getScope());
         selector.initTreeData();

         popUp.setUIComponent(naviManager);
         popUp.setWindowSize(400, 400);
         popUp.setShowMask(true);
         popUp.setShow(true);
      }
   }

   static public class EditPropertiesActionListener extends BaseEditAction
   {
      @Override
      protected void doEdit(UserNavigation navigation, Event<UIGroupNavigationManagement> event) throws Exception
      {
         UIGroupNavigationManagement uicomp = event.getSource();
         SiteKey siteKey = navigation.getKey();

         // open a add navigation popup
         UIPopupWindow popUp = uicomp.getChild(UIPopupWindow.class);
         UIPageNavigationForm pageNavigation = popUp.createUIComponent(UIPageNavigationForm.class, null, null, popUp);
         pageNavigation.setOwnerId(siteKey.getName());
         pageNavigation.setOwnerType(siteKey.getTypeName());
         pageNavigation.setPriority(String.valueOf(navigation.getPriority()));
         pageNavigation.addFormInput();
         pageNavigation.setUserNav(navigation);
         popUp.setUIComponent(pageNavigation);
         popUp.setWindowSize(600, 400);
         popUp.setShowMask(true);
         popUp.setShow(true);   
      }
   }

   static public class DeleteNavigationActionListener extends BaseEditAction
   {
      @Override
      protected void doEdit(UserNavigation navigation, Event<UIGroupNavigationManagement> event) throws Exception
      {
         UIGroupNavigationManagement uicomp = event.getSource();
         NavigationService service = uicomp.getApplicationComponent(NavigationService.class);

         NavigationContext ctx = service.loadNavigation(navigation.getKey());
         if (ctx != null)
         {
            service.destroyNavigation(ctx);
         }

         //
         event.getRequestContext().addUIComponentToUpdateByAjax(uicomp);
         //Update UserToolbarGroupPortlet
         UIWorkingWorkspace uiWorkingWS = Util.getUIPortalApplication().getChild(UIWorkingWorkspace.class);
         uiWorkingWS.updatePortletsByName("UserToolbarGroupPortlet");         
      }
   }

   static public class AddNavigationActionListener extends EventListener<UIGroupNavigationManagement>
   {
      public void execute(Event<UIGroupNavigationManagement> event) throws Exception
      {
         PortalRequestContext prContext = Util.getPortalRequestContext();
         //UIGroupNavigationManagement uicomp = event.getSource();
         UIPortalApplication uiApp = (UIPortalApplication)prContext.getUIApplication();
         //UIGroupNavigationPortlet uiPortlet = (UIGroupNavigationPortlet) uicomp.getParent();
         UIMaskWorkspace uiMaskWS = uiApp.getChildById(UIPortalApplication.UI_MASK_WS_ID);

         UIAddGroupNavigation uiNewPortal = uiMaskWS.createUIComponent(UIAddGroupNavigation.class, null, null);
         uiMaskWS.setUIComponent(uiNewPortal);
         uiMaskWS.setShow(true);
         prContext.addUIComponentToUpdateByAjax(uiMaskWS);
         
         //If other users has add or remove group navigation, we need to refresh this portlet
         UIWorkingWorkspace uiWorkingWS = Util.getUIPortalApplication().getChild(UIWorkingWorkspace.class);
         uiWorkingWS.updatePortletsByName("UserToolbarGroupPortlet");  
      }
   }

   static public class BackActionListener extends EventListener<UIPageNodeForm>
   {

      public void execute(Event<UIPageNodeForm> event) throws Exception
      {
         UIPageNodeForm uiPageNodeForm = event.getSource();
         UIGroupNavigationManagement uiGroupNavigation =
            uiPageNodeForm.getAncestorOfType(UIGroupNavigationManagement.class);
         UINavigationManagement navigationManager = uiGroupNavigation.naviManager;
         
         UINavigationNodeSelector selector = navigationManager.getChild(UINavigationNodeSelector.class);
         TreeNode selectedParent = (TreeNode)uiPageNodeForm.getSelectedParent();
         selector.selectNode(selectedParent);                 

         UIPopupWindow uiNavigationPopup = uiGroupNavigation.getChild(UIPopupWindow.class);
         uiNavigationPopup.setUIComponent(navigationManager);
         uiNavigationPopup.setWindowSize(400, 400);
         uiNavigationPopup.setRendered(true);
         event.getRequestContext().addUIComponentToUpdateByAjax(uiNavigationPopup.getParent());
         
         TreeNode pageNode = uiPageNodeForm.getPageNode();
         if (pageNode != null)
         {
            selector.getUserNodeLabels().put(pageNode.getId(), pageNode.getI18nizedLabels());
         }
         selector.createEvent("NodeModified", Phase.PROCESS, event.getRequestContext()).broadcast();
      }

   }

   static public class CloseActionListener extends UIPopupWindow.CloseActionListener
   {
      public void execute(Event<UIPopupWindow> event) throws Exception
      {
         UIPopupWindow popWindow = event.getSource();
         popWindow.setUIComponent(null);
         
         UIGroupNavigationManagement grpMan = popWindow.getAncestorOfType(UIGroupNavigationManagement.class);
         grpMan.naviManager = null;
         
         super.execute(event);
      }
   }
}
