/**
    * Copyright 2005-2012 The Kuali Foundation
    *
    * Licensed under the Educational Community License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    * http://www.opensource.org/licenses/ecl2.php
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.kuali.rice.kns.web.struts.action;
  
  import org.apache.struts.action.Action;
  import org.apache.struts.action.ActionForm;
  import org.apache.struts.action.ActionForward;
  import org.apache.struts.action.ActionMapping;
  import org.kuali.rice.core.api.config.property.ConfigContext;
  import org.kuali.rice.coreservice.framework.CoreFrameworkServiceLocator;
  import org.kuali.rice.krad.util.KRADConstants;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  /**
   * This class handles the logout. After logout it will do an external redirect to an url
   * specified by a Parameter (LOGOUT_REDIRECT_URL) or a config property (rice.portal.logout.redirectUrl).
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public class KualiLogoutAction extends Action {
  
      /**
       * Invalidates the users session and redirects to a configurable url after logout.
       * 
       */
      @Override
      public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
  
          String redirectString = CoreFrameworkServiceLocator.getParameterService().getParameterValueAsString(KRADConstants.KNS_NAMESPACE, KRADConstants.DetailTypes.ALL_DETAIL_TYPE, KRADConstants.LOGOFF_REDIRECT_URL_PARAMETER);
  
          if(redirectString == null) {
              redirectString = ConfigContext.getCurrentContextConfig().getProperty(KRADConstants.LOGOFF_REDIRECT_URL_PROPERTY);
          }
          
          request.getSession().invalidate();
          
          return new ActionForward(redirectString, true);
      }
  
  }