/*
    * 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.mylutece.modules.saml.authentication.config;
  
  import fr.paris.lutece.portal.service.util.AppException;
  import fr.paris.lutece.portal.service.util.AppLogService;
  import fr.paris.lutece.portal.service.util.AppPropertiesService;
  
  import java.io.FileNotFoundException;
  import java.io.IOException;
  
  import java.util.Map;
  import java.util.Properties;
  
  
  public class ConfigProperties extends Properties
  {
      private static final long serialVersionUID = 6091203931131546429L;
      private static ConfigProperties instance = null;
      private boolean isTest = false;
  
      protected ConfigProperties(  )
      {
          try
          {
              init( "mylutece-saml-test.properties" );
          }
          catch ( FileNotFoundException ex )
          {
              String message = "File not found : " + ex.getMessage(  );
              AppLogService.error( message );
              throw new AppException( message, ex );
          }
          catch ( IOException ex )
          {
              String message = "Read error : " + ex.getMessage(  );
              AppLogService.error( message );
              throw new AppException( message, ex );
          }
      }
  
      public boolean isTest(  )
      {
          return instance.isTest;
      }
  
      public void setTest( boolean isTest )
      {
          instance.isTest = isTest;
      }
  
      public static void init(  ) throws Exception
      {
          if ( instance == null )
          {
              instance = new ConfigProperties(  );
          }
      }
  
      public static ConfigProperties getInstance(  )
      {
          if ( instance == null )
          {
              instance = new ConfigProperties(  );
          }
  
          return instance;
      }
 
     private void init( String name ) throws IOException
     {
         load( getClass(  ).getResourceAsStream( name ) );
         expandVariables(  );
     }
 
     @Override
     public String getProperty( String key, String defaultValue )
     {
         if ( isTest )
         {
             return super.getProperty( key, defaultValue );
         }
         else
         {
             return AppPropertiesService.getProperty( key, defaultValue );
         }
     }
 
     @Override
     public String getProperty( String key )
     {
         if ( isTest )
         {
             return super.getProperty( key );
         }
         else
         {
             return AppPropertiesService.getProperty( key );
         }
     }
 
     /**
      * Expands ${var} using System properties.
      */
     private void expandVariables(  )
     {
         for ( Map.Entry<Object, Object> e : this.entrySet(  ) )
         {
             String value = (String) e.getValue(  );
 
             boolean replaced;
 
             do
             {
                 replaced = false;
 
                 // Replace ${<varkey>} with <varval>
                 int begin = 0;
 
                 // Replace ${<varkey>} with <varval>
                 int end = 0;
 
                 if ( ( begin = value.indexOf( "${" ) ) != -1 )
                 {
                     end = value.indexOf( '}', begin );
 
                     String varkey = value.substring( begin + 2, end );
                     String varval = System.getProperty( varkey );
 
                     if ( varval != null )
                     {
                         value = value.substring( 0, begin ) + varval + value.substring( end + 1 );
                         replaced = true;
                     }
                 }
             }
             while ( replaced );
 
             if ( !value.equals( (String) e.getValue(  ) ) )
             {
                 e.setValue( value );
             }
         }
     }
 }