/*
    * Copyright (c) 2002-2020, 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.jasper.service;
  
  import fr.paris.lutece.portal.service.spring.SpringContextService;
  import fr.paris.lutece.portal.service.util.AppLogService;
  import fr.paris.lutece.portal.service.util.AppPathService;
  
  import org.springframework.context.ApplicationContext;
  import org.springframework.context.support.FileSystemXmlApplicationContext;
  
  import java.io.File;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Service fetching the declared section
   */
  @SuppressWarnings( "unchecked" )
  public enum ExportFormatService
  {
      INSTANCE;
  
      private static final String CORE = "core";
      private static Map<String, ApplicationContext> _mapContext = new HashMap<String, ApplicationContext>( );
      private static final String PATH_CONF = "/WEB-INF/conf/";
      private static final String DIR_PLUGINS = "plugins/";
      private static final String SUFFIX_CONTEXT_FILE = "_context.xml";
  
      /**
       * Gets a Spring Application context from a given name
       * 
       * @param strContextName
       *            The context's name
       * @return The context
       */
      private static ApplicationContext getContext( String strContextName )
      {
          // Try to get the context from the cache
          ApplicationContext context = (ApplicationContext) _mapContext.get( strContextName );
  
          if ( context == null )
          {
              // If not found then load the context from the XML file
              String strContextFilePath = AppPathService.getAbsolutePathFromRelativePath( PATH_CONF );
  
              if ( !strContextName.equals( CORE ) )
              {
                  strContextFilePath += DIR_PLUGINS;
              }
  
              String strContextFile = strContextFilePath + strContextName + SUFFIX_CONTEXT_FILE;
  
              try
              {
                  if ( strContextName.equals( CORE ) )
                  {
                      context = new FileSystemXmlApplicationContext( "file:" + strContextFile );
                  }
                  else
                  {
                      List<String> listModules = new ArrayList<String>( );
                      File dir = new File( strContextFilePath );
                      String [ ] arrayFiles = dir.list( );
  
                     if ( arrayFiles != null )
                     {
                         for ( int i = 0; i < arrayFiles.length; i++ )
                         {
                             String strPath = arrayFiles [i];
 
                             if ( strPath.startsWith( strContextName ) && strPath.endsWith( "_context.xml" ) )
                             {
                                 String strFullPath = "file:" + strContextFilePath + strPath;
                                 listModules.add( strFullPath );
                             }
                         }
                     }
 
                     String [ ] arrayModules = new String [ listModules.size( )];
                     listModules.toArray( arrayModules );
                     context = new FileSystemXmlApplicationContext( arrayModules );
                 }
             }
             catch( Exception e )
             {
                 AppLogService.error( "Error retrieving context file : " + e.getMessage( ), e );
             }
             finally
             {
                 _mapContext.put( strContextName, context );
             }
 
             _mapContext.put( strContextName, context );
         }
 
         return context;
     }
 
     public List<ILinkJasperReport> getExportTypes( )
     {
         return SpringContextService.getBeansOfType( ILinkJasperReport.class );
 
     }
 }