/*
    * 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.portal.service.prefs;
  
  import fr.paris.lutece.portal.business.prefs.IPreferencesDAO;
  
  import org.springframework.beans.factory.InitializingBean;
  
  import java.util.List;
  
  
  /**
   * Abstract User Preferences Service
   * @since 4.0
   */
  public class BaseUserPreferencesServiceImpl implements IUserPreferencesService, InitializingBean
  {
      private static final String TRUE = "true";
      private static final String FALSE = "false";
      private static BaseUserPreferencesCacheService _cache;
      private IPreferencesDAO _dao;
  
      /**
       * Constructor
       */
      protected BaseUserPreferencesServiceImpl(  )
      {
      }
  
      /**
       * Sets the DAO
       * @param dao The DAO
       */
      public void setDao( IPreferencesDAO dao )
      {
          _dao = dao;
      }
  
      /**
       * {@inheritDoc }
       */
      @Override
      public String get( String strUserId, String strKey, String strDefault )
      {
          String strCacheKey = _cache.getCacheKey( strUserId, strKey );
          String strValue = (String) _cache.getFromCache( strCacheKey );
  
          if ( strValue == null )
          {
              strValue = _dao.load( strUserId, strKey, strDefault );
              _cache.putInCache( strCacheKey, strValue );
          }
  
          return strValue;
      }
  
      /**
       * {@inheritDoc }
       */
      @Override
      public int getInt( String strUserId, String strKey, int nDefault )
      {
          return Integer.parseInt( get( strUserId, strKey, String.valueOf( nDefault ) ) );
      }
  
      /**
       * {@inheritDoc }
       */
     @Override
     public boolean getBoolean( String strUserId, String strKey, boolean bDefault )
     {
         String strDefault = bDefault ? TRUE : FALSE;
         String strValue = get( strUserId, strKey, strDefault );
 
         return strValue.equals( TRUE );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public void put( String strUserId, String strKey, String strValue )
     {
         _dao.store( strUserId, strKey, strValue );
         _cache.putInCache( _cache.getCacheKey( strUserId, strKey ), strValue );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public void putInt( String strUserId, String strKey, int nValue )
     {
         put( strUserId, strKey, String.valueOf( nValue ) );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public void putBoolean( String strUserId, String strKey, boolean bValue )
     {
         String strValue = bValue ? TRUE : FALSE;
         put( strUserId, strKey, strValue );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public List<String> keys( String strUserId )
     {
         return _dao.keys( strUserId );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public void clear( String strUserId )
     {
         _dao.remove( strUserId );
         _cache.removeCacheValuesOfUser( strUserId );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public void clearKey( String strUserId, String strKey )
     {
         _dao.removeKey( strUserId, strKey );
         _cache.removeCacheValuesOfUser( strUserId );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public void clearKeyPrefix( String strUserId, String strPrefix )
     {
         _dao.removeKeyPrefix( strUserId, strPrefix );
         _cache.removeCacheValuesOfUser( strUserId );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public boolean existsKey( String strUserId, String strKey )
     {
         return _dao.existsKey( strUserId, strKey );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public List<String> getUsers( String strKey, String strValue )
     {
         return _dao.getUserId( strKey, strValue );
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void afterPropertiesSet(  ) throws Exception
     {
         synchronized ( BaseUserPreferencesServiceImpl.class )
         {
             if ( _cache == null )
             {
                 _cache = new BaseUserPreferencesCacheService(  );
                 _cache.initCache(  );
             }
         }
     }
 
 	@Override
 	public boolean existsValueForKey(String strKey, String strValue) {
 		
 		return _dao.existsValueForKey(strKey, strValue);
 	}
 }