/*
    * Copyright (c) 2002-2017, Mairie de Paris
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, are permitted provided that the following conditions
    * are met:
    *
    *  1. Redistributions of source code must retain the above copyright notice
   *     and the following disclaimer.
   *
   *  2. Redistributions in binary form must reproduce the above copyright notice
   *     and the following disclaimer in the documentation and/or other materials
   *     provided with the distribution.
   *
   *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
   *     contributors may be used to endorse or promote products derived from
   *     this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   * License 1.0
   */
  package fr.paris.lutece.plugins.mylutece.modules.casexternal.authentication;
  
  //import edu.yale.its.tp.cas.client.filter.CASFilter;
  import fr.paris.lutece.plugins.mylutece.authentication.ExternalAuthentication;
  import fr.paris.lutece.plugins.mylutece.modules.casexternal.service.CASExternalPlugin;
  import fr.paris.lutece.portal.service.security.LoginRedirectException;
  
  import fr.paris.lutece.portal.service.security.LuteceUser;
  import fr.paris.lutece.portal.service.util.AppLogService;
  import fr.paris.lutece.portal.service.util.AppPropertiesService;
  import org.jasig.cas.client.authentication.AttributePrincipal;
  
  import java.util.Iterator;
  import java.util.Map;
  
  import javax.security.auth.login.LoginException;
  
  import javax.servlet.http.HttpServletRequest;
  
  
  /**
   * The class provides an implementation of the inherited abstract class
   * PortalAuthentication based on CAS
   *
   */
  public class CASExternalAuthentication extends ExternalAuthentication
  {
      // //////////////////////////////////////////////////////////////////////////////////////////////
      // Constants
      private static final String PROPERTY_AUTH_SERVICE_NAME = AppPropertiesService.getProperty( "mylutece-casexternal.service.name" );
      private static final String PROPERTY_DEFAULT_ROLE_NAME = AppPropertiesService.getProperty( "mylutece-casexternal.role.name" );
      private static final String PROPERTY_USER_DIRECTION = "mylutece-casexternal.user.direction";
      private static final String PROPERTY_USER_ROLE = "mylutece-casexternal.user.role";
  
      /**
       * Constructor
       */
      public CASExternalAuthentication(  )
      {
          super(  );
      }
  
      /**
       * Gets the Authentication service name
       *
       * @return The name of the authentication service
       */
      public String getAuthServiceName(  )
      {
          return PROPERTY_AUTH_SERVICE_NAME;
      }
  
      /**
       * Gets the Authentication type
       *
       * @param request
       *            The HTTP request
       * @return The type of authentication
       */
      public String getAuthType( HttpServletRequest request )
      {
          return HttpServletRequest.BASIC_AUTH;
      }
  
      /**
       * This methods logout the user
      *
      * @param user
      *            The user
      */
     public void logout( LuteceUser user )
     {
     }
 
     /**
      * 
      *{@inheritDoc}
      */
     public String[] getRolesByUser( LuteceUser user )
     {
         return null;
     }
 
     /**
      * This method returns an anonymous Lutece user
      *
      * @return An anonymous Lutece user
      */
     public LuteceUser getAnonymousUser(  )
     {
         return new CASExternalUser( LuteceUser.ANONYMOUS_USERNAME, this );
     }
 
     /**
      * 
      *{@inheritDoc}
      */
     public LuteceUser getHttpAuthenticatedUser(HttpServletRequest request) {
 
         String strCASExternalUserLogin = request.getRemoteUser();
         AppLogService.debug("You are succesfully logged in as user "	+ request.getRemoteUser());
         CASExternalUser user = null;
         String strUserDir;
         String strUserRole;
 
         if ( strCASExternalUserLogin != null )
         {
             user = new CASExternalUser( strCASExternalUserLogin, this );
         }
 
 	AttributePrincipal principal = (AttributePrincipal) request.getUserPrincipal();
 	Map attributes = principal.getAttributes();
 
 	if (attributes.size() > 0) {
 
 		AppLogService.debug("You have " + attributes.size() + " attributes : ");
 		Iterator keyIterator = attributes.keySet().iterator();
 
 		while (keyIterator.hasNext()) {
 
 			String strKey = keyIterator.next().toString();
 			String strValue = attributes.get(strKey).toString();
                         user.setUserInfo(strKey, strValue);
 			AppLogService.debug("key : '" + strKey + "' / value : '" + strValue + "'");
 		}
 
                 //TODO
                 //bouchon à supprimer lorsque la direction et la notion de management sera dans l'IAM
                 strUserDir = AppPropertiesService.getProperty( PROPERTY_USER_DIRECTION );
                 strUserRole = AppPropertiesService.getProperty( PROPERTY_USER_ROLE );
 
                 user.setUserInfo("direction", strUserDir);
                 AppLogService.debug("direction : '" + strUserDir + "'");
                 user.setUserInfo("role", strUserRole);
                 AppLogService.debug("role : '" + strUserRole + "'");
 
 	} 
         else
         {
 		AppLogService.debug("You have no attributes set");
 	}
 
         return user;
     }
 
     /**
      * 
      *{@inheritDoc}
      */
     public LuteceUser login(String string, String string1, HttpServletRequest hsr) throws LoginException, LoginRedirectException {
         throw new UnsupportedOperationException("Not supported yet.");
     }
 
     /**
      * 
      *{@inheritDoc}
      */
     public boolean isUserInRole(LuteceUser lu, HttpServletRequest hsr, String string) {
         throw new UnsupportedOperationException("Not supported yet.");
     }
 
     /**
      * 
      *{@inheritDoc}
      */
 	public String getName()
 	{
 		return CASExternalPlugin.PLUGIN_NAME;
 	}
 
 	/**
 	 * 
 	 *{@inheritDoc}
 	 */
 	public String getPluginName()
 	{
 		return CASExternalPlugin.PLUGIN_NAME;
 	}
 }