/**
    * This file Copyright (c) 2003-2010 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.cms.security;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.ArrayList;
  
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  /**
   * Dummy user implementation returned when an actual user instance can't be instantiated.
   *
   * @author Sameer Charles
   * @version $Revision:9391 $ ($Author:scharles $)
   */
  public class DummyUser extends AbstractUser {
  
      private static final Logger log = LoggerFactory.getLogger(DummyUser.class);
  
      private static final String DEFAULT_LANGUAGE = "en";
  
      DummyUser() {
          log.info("Initializing dummy user - Anonymous");
          log.info("This area and/or instance is not secured");
      }
  
      /**
       * Dummy user has full access, always returns true.
       */
      public boolean hasRole(String roleName) {
          return true;
      }
  
      /**
       * Simply log that its a dummy user.
       */
      public void removeRole(String roleName) throws UnsupportedOperationException {
          log.debug("User [ Anonymous ] has no roles");
      }
  
      /**
       * Simply log that its a dummy user.
       * @param roleName the name of the role
       */
      public void addRole(String roleName) throws UnsupportedOperationException {
          log.debug("No roles can be attached to user [ Anonymous ]");
      }
  
      /**
       * Always returns true.
       */
      public boolean inGroup(String groupName) {
          return true;
      }
  
      public void removeGroup(String groupName) throws UnsupportedOperationException {
          log.debug("User [ Anonymous ] has no groups");
      }
  
      public void addGroup(String groupName) throws UnsupportedOperationException {
          log.debug("No groups can be attached to user [ Anonymous ]");
      }
  
      public boolean isEnabled() {
         return true;
     }
 
     public void setEnabled(boolean enabled) {
     }
 
     public String getLanguage() {
         return DEFAULT_LANGUAGE;
     }
 
     public String getName() {
         return UserManager.ANONYMOUS_USER;
     }
 
     public String getPassword() {
         return StringUtils.EMPTY;
     }
 
     public String getProperty(String propertyName) {
         return null;
     }
 
     public void setProperty(String propertyName, String value) {
         log.debug("Can not set properties on dummy user (name: {}, value: {})", propertyName, value);
     }
 
     public Collection<String> getGroups() {
         return Collections.emptyList();
     }
 
     public Collection<String> getAllGroups() {
         return new ArrayList<String>();
     }
 
     public Collection<String> getRoles() {
         return Collections.emptyList();
     }
 
     public Collection<String> getAllRoles() {
         return new ArrayList<String>();
     }
 }