/*
    * Copyright (C) 2003-2007 eXo Platform SAS.
    *
    * 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 General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see<http://www.gnu.org/licenses/>.
   */
  package org.exoplatform.ecm.webui.component.admin.unlock;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.lang.StringUtils;
  import org.exoplatform.commons.utils.LazyPageList;
  import org.exoplatform.commons.utils.ListAccess;
  import org.exoplatform.commons.utils.ListAccessImpl;
  import org.exoplatform.ecm.webui.core.UIPagingGridDecorator;
  import org.exoplatform.ecm.utils.lock.LockUtil;
  import org.exoplatform.services.cms.lock.LockService;
  import org.exoplatform.web.application.ApplicationMessage;
  import org.exoplatform.webui.config.annotation.ComponentConfig;
  import org.exoplatform.webui.config.annotation.EventConfig;
  import org.exoplatform.webui.core.UIApplication;
  import org.exoplatform.webui.event.Event;
  import org.exoplatform.webui.event.EventListener;
  
  /**
   * Created by The eXo Platform SARL
   * Author : Dang Van Minh
   *          minh.dang@exoplatform.com
   * Dec 29, 2006
   * 11:30:17 AM
   */
  @ComponentConfig(
      template = "app:/groovy/webui/component/admin/unlock/UILockHolderList.gtmpl",
      events = {
          @EventConfig(listeners = UILockHolderList.DeleteLockActionListener.class)
      }
  )
  public class UILockHolderList extends UIPagingGridDecorator {
    final static public String[] ACTIONS = {};
    final static public String ST_EDIT = "EditUnLockForm";
  
    public UILockHolderList() throws Exception {
      getUIPageIterator().setId("LockHolderListIterator");
    }
  
    public String[] getActions() { return ACTIONS ; }
  
    public void refresh(int currentPage) throws Exception {
      ListAccess<String> groupsAndUsersForLockList = new ListAccessImpl<String>(String.class,
                                                                                getAllGroupsOrUsersForLock());
      LazyPageList<String> pageList = new LazyPageList<String>(groupsAndUsersForLockList,
                                                               getUIPageIterator().getItemsPerPage());
      getUIPageIterator().setPageList(pageList);
      if (currentPage > getUIPageIterator().getAvailablePage())
        getUIPageIterator().setCurrentPage(getUIPageIterator().getAvailablePage());
      else
        getUIPageIterator().setCurrentPage(currentPage);
    }
  
  
    public List getGroupsOrUsersForLock() throws Exception {
      return getUIPageIterator().getCurrentPageData();
    }
  
    public List<String> getAllGroupsOrUsersForLock() throws Exception {
      LockService lockService = getApplicationComponent(LockService.class);
  
      return lockService.getAllGroupsOrUsersForLock();
    }
  
    static public class DeleteLockActionListener extends EventListener<UILockHolderList> {
      public void execute(Event<UILockHolderList> event) throws Exception {
        UILockHolderList uiLockHolderList = event.getSource();
        UILockHolderContainer uiLockHolderContainer = uiLockHolderList.getAncestorOfType(UILockHolderContainer.class);
        String removedLockSetting = event.getRequestContext().getRequestParameter(OBJECTID);
        LockService lockService = uiLockHolderContainer.getApplicationComponent(LockService.class);
        if (!lockService.getPreSettingLockList().contains(removedLockSetting)) {
          lockService.removeGroupsOrUsersForLock(removedLockSetting);
  
          // Update lock cache
          List<String> ignoredList = new ArrayList<String>();
          if (removedLockSetting.startsWith("*")) {
            String groupOfRemovedLockSetting = StringUtils.substringAfter(removedLockSetting, ":");
            List<String> allLockSettings = lockService.getAllGroupsOrUsersForLock();
            for (String lockSetting : allLockSettings) {
              if (groupOfRemovedLockSetting.equals(StringUtils.substringAfter(lockSetting, ":"))) {
                ignoredList.add(lockSetting);
              }
           }
         }
         LockUtil.removeLockCache(removedLockSetting, ignoredList);
 
       } else {
         Object[] args = {removedLockSetting};
         UIApplication uiApp = uiLockHolderList.getAncestorOfType(UIApplication.class);
         uiApp.addMessage(new ApplicationMessage("UILockHolderList.msg.can-not-delete-lock-holder", args,
             ApplicationMessage.WARNING));
 
         event.getRequestContext().addUIComponentToUpdateByAjax(uiLockHolderContainer.getParent());
       }
       UILockHolderList uiHolderList = uiLockHolderContainer.getChild(UILockHolderList.class);
       uiHolderList.refresh(uiHolderList.getUIPageIterator().getCurrentPage());
       UIUnLockManager uiUnLockManager = uiLockHolderContainer.getParent();
       uiUnLockManager.getChild(UILockNodeList.class).setRendered(false);
       uiLockHolderContainer.setRendered(true);
       event.getRequestContext().addUIComponentToUpdateByAjax(uiLockHolderContainer.getParent());
     }
   }
 }