/*
    * Copyright (c) 2002-2021, City of 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.oauth2.authentication;
  
  import java.io.IOException;
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Locale;
  import java.util.Map;
  import java.util.stream.Collectors;
  
  import javax.security.auth.login.LoginException;
  import javax.servlet.http.HttpServletRequest;
  
  import fr.paris.lutece.plugins.mylutece.authentication.PortalAuthentication;
  import fr.paris.lutece.plugins.mylutece.business.LuteceUserAttributeDescription;
  import fr.paris.lutece.plugins.mylutece.business.LuteceUserRoleDescription;
  import fr.paris.lutece.plugins.mylutece.business.attribute.AttributeHome;
  import fr.paris.lutece.plugins.mylutece.modules.oauth2.service.Oauth2Service;
  import fr.paris.lutece.plugins.mylutece.service.MyLutecePlugin;
  import fr.paris.lutece.plugins.oauth2.business.Token;
  import fr.paris.lutece.plugins.oauth2.service.DataClientService;
  import fr.paris.lutece.plugins.oauth2.service.TokenService;
  import fr.paris.lutece.portal.business.role.RoleHome;
  import fr.paris.lutece.portal.service.plugin.Plugin;
  import fr.paris.lutece.portal.service.plugin.PluginService;
  import fr.paris.lutece.portal.service.security.LoginRedirectException;
  import fr.paris.lutece.portal.service.security.LuteceUser;
  import fr.paris.lutece.portal.service.security.SecurityService;
  import fr.paris.lutece.portal.service.util.AppLogService;
  import fr.paris.lutece.portal.service.util.AppPropertiesService;
  
  /**
   * The Class provides an implementation of the inherited abstract class PortalAuthentication based on OpenID
   */
  public class Oauth2Authentication extends PortalAuthentication implements Serializable
  {
      ////////////////////////////////////////////////////////////////////////////////////////////////
      // Constants
      private static final String PROPERTY_AUTH_SERVICE_NAME = "mylutece-oauth2.service.name";
      private static final String CONSTANT_PATH_ICON = "images/local/skin/plugins/mylutece/modules/openid/mylutece-openid.png";
      private static final String PLUGIN_NAME = "mylutece-oauth2";
      private static final long serialVersionUID = 1L;
      private static final String authDataClientName = "authData";
  
      /**
       * Gets the Authentification service name
       *
       * @return The name of the authentication service
       */
      @Override
      public String getAuthServiceName( )
      {
          return AppPropertiesService.getProperty( PROPERTY_AUTH_SERVICE_NAME );
      }
  
      /**
       * Gets the Authentification type
       *
       * @param request
       *            The HTTP request
       * @return The type of authentication
       */
      @Override
      public String getAuthType( HttpServletRequest request )
      {
          return HttpServletRequest.BASIC_AUTH;
     }
 
     /**
      * This methods checks the login info in the LDAP repository
      *
      *
      * @return A LuteceUser object corresponding to the login
      * @param strUserName
      *            The username
      * @param strUserPassword
      *            The password
      * @param request
      *            The HttpServletRequest
      * @throws LoginRedirectException
      *             This exception is used to redirect the authentication to the provider
      * @throws LoginException
      *             The LoginException
      */
     @Override
     public LuteceUser processLogin( String strUserName, String strUserPassword, HttpServletRequest request ) throws LoginException, LoginRedirectException
     {
         return getHttpAuthenticatedUser( request );
     }
 
     /**
      * This methods logout the user
      *
      * @param user
      *            The user
      */
     @Override
     public void logout( LuteceUser user )
     {
     }
 
     /**
      * This method returns an anonymous Lutece user
      *
      * @return An anonymous Lutece user
      */
     @Override
     public LuteceUser getAnonymousUser( )
     {
         return new Oauth2User( LuteceUser.ANONYMOUS_USERNAME, null, this );
     }
 
     /**
      *
      * {@inheritDoc}
      */
     @Override
     public String getIconUrl( )
     {
         return CONSTANT_PATH_ICON;
     }
 
     /**
      *
      * {@inheritDoc}
      */
     @Override
     public String getName( )
     {
         return PLUGIN_NAME;
     }
 
     /**
      *
      * {@inheritDoc}
      */
     @Override
     public String getPluginName( )
     {
         return PLUGIN_NAME;
     }
 
     /**
      *
      * {@inheritDoc}
      */
     @Override
     public boolean isMultiAuthenticationSupported( )
     {
         return false;
     }
 
     /**
      * Returns a Lutece user object if the user is already authenticated by Openam
      * 
      * @param request
      *            The HTTP request
      * @return Returns A Lutece User or null if there no user authenticated
      */
     @Override
     public LuteceUser getHttpAuthenticatedUser( HttpServletRequest request )
     {
         LuteceUser user = null;
         user = SecurityService.getInstance( ).getRegisteredUser( request );
         // Reload User if info
         if ( user != null && user instanceof Oauth2User )
         {
             Oauth2User./../../../../../fr/paris/lutece/plugins/mylutece/modules/oauth2/authentication/Oauth2User.html#Oauth2User">Oauth2User userOauth = (Oauth2User) user;
             if ( userOauth.getToken( ).getRefreshToken( ) != null )
             {
 
                 AuthDataClient./../../fr/paris/lutece/plugins/mylutece/modules/oauth2/authentication/AuthDataClient.html#AuthDataClient">AuthDataClient authDataClient = (AuthDataClient) DataClientService.instance( ).getClient( authDataClientName );
                 Token token = TokenService.getService( ).getTokenByRefreshToken( userOauth.getToken( ).getRefreshToken( ) );
                 try
                 {
                     Map<String, Object> mapUserInfo = authDataClient.parse( authDataClient.getData( token ) );
                     return Oauth2Service.getInstance( ).processAuthentication( request, mapUserInfo, token );
 
                 }
                 catch( IOException e )
                 {
                     // TODO Auto-generated catch block
                     AppLogService.error( "error during retrieving user info with refresh token  ", e );
                 }
 
             }
             // userOauth.getToken( )
             // // add Openam LuteceUser session
             // OpenamLuteceUserSessionService.getInstance( ).addLuteceUserSession( user.getName( ), request.getSession( true ).getId( ) );
             // }
         }
 
         return user;
     }
     
     
     
 
     /**
      * {@inheritDoc}
      */
     @Override
    public List<LuteceUserAttributeDescription> getLuteceUserAttributesProvided(Locale locale)
     {
     	
     	return Oauth2Service.getInstance().getLuteceUserAttributesProvided(locale);
     }
 }