/*
    * 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.deployment.web;
  
  import java.io.IOException;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import fr.paris.lutece.plugins.deployment.business.Application;
  import fr.paris.lutece.plugins.deployment.business.CommandResult;
  import fr.paris.lutece.plugins.deployment.business.ServerApplicationInstance;
  import fr.paris.lutece.plugins.deployment.service.DeploymentPlugin;
  import fr.paris.lutece.plugins.deployment.service.IApplicationService;
  import fr.paris.lutece.plugins.deployment.service.IFtpService;
  import fr.paris.lutece.plugins.deployment.service.IServerApplicationService;
  import fr.paris.lutece.plugins.deployment.util.ConstanteUtils;
  import fr.paris.lutece.plugins.deployment.util.DeploymentUtils;
  import fr.paris.lutece.portal.service.plugin.Plugin;
  import fr.paris.lutece.portal.service.plugin.PluginService;
  import fr.paris.lutece.portal.service.spring.SpringContextService;
  import fr.paris.lutece.portal.service.util.AppLogService;
  
  /**
   * Servlet serving document file resources
   */
  public class DownloadServlet extends HttpServlet
  {
      /**
  	 *
  	 */
      private static final long serialVersionUID = 8625639667629973645L;
      private IFtpService _ftpService = SpringContextService.getBean( "deployment.FtpService" );
      private IServerApplicationService _serverApplicationService = SpringContextService.getBean( "deployment.ServerApplicationService" );
      private IApplicationService _applicationService = SpringContextService.getBean( "deployment.ApplicationService" );
  
      /**
       * Handles the HTTP <code>GET</code> method.
       * 
       * @param request
       *            servlet request
       * @param response
       *            servlet response
       * @throws ServletException
       *             the servlet Exception
       * @throws IOException
       *             the io exception
       */
      @Override
      protected void doGet( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException
      {
  
          Plugin plugin = PluginService.getPlugin( DeploymentPlugin.PLUGIN_NAME );
          String strCodeEnvironment = request.getParameter( ConstanteUtils.PARAM_CODE_ENVIRONMENT );
          String strCodeServerApplicationInstanceSql = request.getParameter( ConstanteUtils.PARAM_CODE_SERVER_APPLICATION_INSTANCE_SQL );
          String strCodeDatabase = request.getParameter( ConstanteUtils.PARAM_CODE_DATABASE );
          String strIdApplication = request.getParameter( ConstanteUtils.PARAM_CODE_APPLICATION );
          String strServerApplicationType = request.getParameter( ConstanteUtils.PARAM_SERVER_APPLICATION_TYPE );
  
          Application application = _applicationService.getApplication( DeploymentUtils.getIntegerParameter( strIdApplication ), plugin );
  
          ServerApplicationInstance serverApplicationInstance = _serverApplicationService.getServerApplicationInstance( application,
                  strCodeServerApplicationInstanceSql, strCodeEnvironment, strServerApplicationType, request.getLocale( ), false, false );
  
          response.setHeader( "Content-Disposition", "attachment ;filename=\"dump_" + strCodeDatabase + ".sql\";" );
          response.setHeader( "Pragma", "public" );
         response.setHeader( "Expires", "0" );
         response.setHeader( "Cache-Control", "must-revalidate,post-check=0,pre-check=0" );
         response.setHeader( "Content-Type", "application/octet-stream" );
 
         CommandResult commandResult = new CommandResult( );
 
         try
         {
             _ftpService.getFile( response.getOutputStream( ), serverApplicationInstance.getFtpInfo( ),
                     DeploymentUtils.getDumpFileDirectory( application.getCode( ), serverApplicationInstance ) + "FROM_Z00-" + strCodeDatabase
                             + "-ALL_TABLES.sql", commandResult );
         }
         catch( IOException e )
         {
             AppLogService.error( e );
         }
 
     }
 
     /**
      * Returns a short description of the servlet.
      * 
      * @return message
      */
     @Override
     public String getServletInfo( )
     {
         return "Servlet serving files content from core_file and core_physical_file tables";
     }
 }