/*
    * Copyright (c) 2002-2014, 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.paybox.web;
  
  import java.io.IOException;
  import java.util.List;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import fr.paris.lutece.plugins.paybox.PayboxUtil;
  import fr.paris.lutece.plugins.paybox.service.PayboxLogService;
  import fr.paris.lutece.plugins.paybox.service.PayboxPlugin;
  import fr.paris.lutece.plugins.paybox.service.PayboxService;
  import fr.paris.lutece.portal.service.plugin.PluginService;
  import fr.paris.lutece.portal.service.spring.SpringContextService;
  import fr.paris.lutece.portal.service.util.AppLogService;
  import fr.paris.lutece.portal.service.util.AppPropertiesService;
  
  
  /**
   * Handles paybox server to server.
   */
  public class PayboxServlet extends HttpServlet
  {
      /** The Constant serialVersionUID. */
      private static final long serialVersionUID = 1L;
  
      /** The _paybox log service. */
      private final PayboxLogService _payboxLogService = SpringContextService.getBean( "paybox.payboxLogService" );
  
      /*
       * (non-Javadoc)
       *
       * @see
       * javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest
       * , javax.servlet.http.HttpServletResponse)
       */
      @Override
      protected void doGet( final HttpServletRequest req, final HttpServletResponse resp )
          throws ServletException, IOException
      {
          this.doPost( req, resp );
      }
  
      /*
       * (non-Javadoc)
       *
       * @see
       * javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest
       * , javax.servlet.http.HttpServletResponse)
       */
      @Override
      protected void doPost( final HttpServletRequest request, final HttpServletResponse response )
          throws ServletException, IOException
      {
          if ( !AppPropertiesService.getPropertyBoolean( "paybox.check.sign.callback", true )
                  || PayboxUtil.checkSignature( request.getQueryString( ) ) )
          {
              // ici maj du service de logs
              this._payboxLogService.removeLog( request.getParameter( "reference" ),
                  PluginService.getPlugin( PayboxPlugin.PLUGIN_NAME ) );
  
              this.delagate( request, response );
          }
          else
         {
             AppLogService.error( "Problème de vérification de la signature." );
         }
 
         response.setStatus( 200 );
     }
 
     /**
      * Delagate.
      *
      * @param request the request
      * @param response the response
      */
     private void delagate( final HttpServletRequest request, final HttpServletResponse response )
     {
         // no DI possible...
         final List<PayboxService> listPayboxServices = SpringContextService.getBeansOfType( PayboxService.class );
 
         if ( ( listPayboxServices == null ) || listPayboxServices.isEmpty(  ) )
         {
             AppLogService.error( "No PayboxService bean defined. Please check your Spring configuration." );
         }
         else if ( listPayboxServices.size(  ) > 1 )
         {
             AppLogService.error( "Multiple PayboxService beans defined. Please check your Spring configuration." );
         }
         else
         {
             final PayboxService payboxService = listPayboxServices.get( 0 );
             AppLogService.debug( "Using " + payboxService.getClass(  ) + " as PayboxService" );
 
             try
             {
                 payboxService.handlePayboxReturn( request, response );
             }
             catch ( final Exception e )
             {
                 AppLogService.error( e );
             }
         }
     }
 }