/*
    * Copyright (c) 2002-2022, 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.pluginwizard.service;
  
  import fr.paris.lutece.plugins.pluginwizard.business.model.PluginModel;
  import fr.paris.lutece.plugins.pluginwizard.service.generator.GeneratorService;
  import fr.paris.lutece.portal.service.plugin.Plugin;
  import fr.paris.lutece.portal.service.plugin.PluginService;
  import fr.paris.lutece.portal.service.util.AppLogService;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  
  import java.util.Map;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipOutputStream;
  
  import javax.servlet.http.HttpServletRequest;
  
  /**
   * The zip service will pack all the chosen files and create an archive
   */
  public class PluginWizardZipService
  {
      private static PluginWizardZipService _singleton;
      private static final String PARAM_PLUGIN_ID = "plugin_id";
      private static final String PARAM_SCHEME = "scheme";
      private static Plugin _plugin = PluginService.getPlugin( "pluginwizard" );
  
      /**
       * Gets the unique instance of the PluginWizardZipService
       * 
       * @return The unique instance of the PluginWizardZipService
       */
      public static synchronized PluginWizardZipService getInstance( )
      {
          if ( _singleton == null )
          {
              _singleton = new PluginWizardZipService( );
          }
  
          return _singleton;
      }
  
      /**
       * Exports the files in a byte array
       * 
       * @param request
       *            The Http request
       * @return An array of byte which is the content of the archive
       */
      public byte [ ] exportZip( HttpServletRequest request )
      {
          ByteArrayOutputStream fos = new ByteArrayOutputStream( );
  
          byte [ ] buffer = new byte [ 1024];
  
          ZipOutputStream zipOutputStream = new ZipOutputStream( fos );
          zipOutputStream.setLevel( 9 );
  
          String strPluginId = request.getParameter( PARAM_PLUGIN_ID );
          int nPluginId = Integer.parseInt( strPluginId );
          String strScheme = request.getParameter( PARAM_SCHEME );
          int nScheme = Integer.parseInt( strScheme );
          PluginModel pluginModel = ModelService.getPluginModel( nPluginId );
          GeneratorServiced/service/generator/GeneratorService.html#GeneratorService">GeneratorService generator = new GeneratorService( );
          Map<String, String> mapSources = generator.getGeneratedSources( _plugin, pluginModel, nScheme );
  
         try
         {
             for ( Map.Entry<String, String> sourceFile : mapSources.entrySet( ) )
             {
                 StringBuilder sb = new StringBuilder( sourceFile.getValue( ) );
                 ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream( sb.toString( ).getBytes( "UTF-8" ) );
                 zipOutputStream.putNextEntry( new ZipEntry( sourceFile.getKey( ) ) );
 
                 int nLength;
 
                 while ( ( nLength = byteArrayInputStream.read( buffer ) ) > 0 )
                 {
                     zipOutputStream.write( buffer, 0, nLength );
                 }
 
                 zipOutputStream.closeEntry( );
                 byteArrayInputStream.close( );
             }
 
             zipOutputStream.finish( );
             zipOutputStream.close( );
         }
         catch( Exception e )
         {
             AppLogService.error( e );
         }
 
         return fos.toByteArray( );
     }
 }