/*
    * 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.business.stylesheet;
  
  import fr.paris.lutece.portal.service.util.AppException;
  import fr.paris.lutece.util.sql.DAOUtil;
  
  import java.util.ArrayList;
  import java.util.Collection;
  
  
  /**
   * This class provides Data Access methods for StyleSheet objects
   */
  public final class StyleSheetDAO implements IStyleSheetDAO
  {
      // Constants
      private static final String SQL_QUERY_NEW_PK = " SELECT max(id_stylesheet) FROM core_stylesheet ";
      private static final String SQL_QUERY_SELECT = " SELECT a.description , a.file_name , a.source , b.id_style , b.id_mode " +
          " FROM core_stylesheet a " + " LEFT JOIN core_style_mode_stylesheet b ON a.id_stylesheet = b.id_stylesheet " +
          " WHERE a.id_stylesheet = ? ";
      private static final String SQL_QUERY_INSERT = " INSERT INTO core_stylesheet ( id_stylesheet , description , file_name, source ) " +
          " VALUES ( ?, ? ,?, ? )";
      private static final String SQL_QUERY_DELETE = " DELETE FROM core_stylesheet WHERE id_stylesheet = ? ";
      private static final String SQL_QUERY_UPDATE = " UPDATE core_stylesheet SET id_stylesheet = ?, description = ?, file_name = ?, source = ? WHERE id_stylesheet = ?  ";
      private static final String SQL_QUERY_SELECT_MODEID = " SELECT a.id_mode FROM core_mode a , core_style_mode_stylesheet b  " +
          " WHERE a.id_mode = b.id_mode AND b.id_stylesheet = ?";
      private static final String SQL_QUERY_COUNT_STYLESHEET = " SELECT count(*) FROM core_style_mode_stylesheet WHERE id_style = ? AND id_mode = ? ";
      private static final String SQL_QUERY_INSERT_STYLEMODESTYLESHEET = " INSERT INTO core_style_mode_stylesheet ( id_style , id_mode , id_stylesheet ) " +
          " VALUES ( ?, ? ,? )";
      private static final String SQL_QUERY_UPDATE_STYLEMODESTYLESHEET = " UPDATE core_style_mode_stylesheet SET id_style = ? , id_mode = ?  " +
          " WHERE id_stylesheet = ? ";
      private static final String SQL_QUERY_DELETEE_STYLEMODESTYLESHEET = " DELETE FROM core_style_mode_stylesheet WHERE id_stylesheet = ? ";
  
      ///////////////////////////////////////////////////////////////////////////////////////
      //Access methods to data
  
      /**
       * Generates a new primary key
       * @return The new primary key
       */
      int newPrimaryKey(  )
      {
          DAOUtil daoUtil = new DAOUtil( SQL_QUERY_NEW_PK );
          daoUtil.executeQuery(  );
  
          int nKey;
  
          if ( !daoUtil.next(  ) )
          {
              // if the table is empty
              nKey = 1;
          }
  
          nKey = daoUtil.getInt( 1 ) + 1;
  
          daoUtil.free(  );
  
          return nKey;
      }
  
      /**
       * Insert a new record in the table.
       * @param stylesheet The StyleSheet object
       */
      public synchronized void insert( StyleSheet stylesheet )
      {
          stylesheet.setId( newPrimaryKey(  ) );
 
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_INSERT );
 
         daoUtil.setInt( 1, stylesheet.getId(  ) );
         daoUtil.setString( 2, stylesheet.getDescription(  ) );
         daoUtil.setString( 3, stylesheet.getFile(  ) );
         daoUtil.setBytes( 4, stylesheet.getSource(  ) );
 
         daoUtil.executeUpdate(  );
 
         //Update of the table style_mode_stylesheet in the database
         insertStyleModeStyleSheet( stylesheet );
         daoUtil.free(  );
     }
 
     /**
      * Load the data of Stylesheet from the table
      * @param nIdStylesheet the identifier of the Stylesheet to load
      * @return stylesheet
      */
     public StyleSheet load( int nIdStylesheet )
     {
         StyleSheet stylesheet = null;
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECT );
         daoUtil.setInt( 1, nIdStylesheet );
         daoUtil.executeQuery(  );
 
         if ( daoUtil.next(  ) )
         {
             stylesheet = new StyleSheet(  );
             stylesheet.setId( nIdStylesheet );
             stylesheet.setDescription( daoUtil.getString( 1 ) );
             stylesheet.setFile( daoUtil.getString( 2 ) );
             stylesheet.setSource( daoUtil.getBytes( 3 ) );
             stylesheet.setStyleId( daoUtil.getInt( 4 ) );
             stylesheet.setModeId( daoUtil.getInt( 5 ) );
         }
 
         daoUtil.free(  );
 
         return stylesheet;
     }
 
     /**
      * Delete the StyleSheet from the database whose identifier is specified
      * in parameter
      * @param nIdStylesheet the identifier of the StyleSheet to delete
      */
     public void delete( int nIdStylesheet )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_DELETE );
         daoUtil.setInt( 1, nIdStylesheet );
         daoUtil.executeUpdate(  );
         daoUtil.free(  );
 
         // delete also into style_mode_stylesheet
         deleteStyleModeStyleSheet( nIdStylesheet );
     }
 
     /**
      * Load the list of stylesheet
      * @param nModeId The Mode identifier
      * @return the list of the StyleSheet in form of a collection of StyleSheet objects
      */
     public Collection<StyleSheet> selectStyleSheetList( int nModeId )
     {
         Collection<StyleSheet> stylesheetList = new ArrayList<StyleSheet>(  );
 
         String strSelect = " SELECT a.id_stylesheet , a.description , a.file_name ";
         String strFrom = " FROM core_stylesheet a ";
 
         if ( nModeId != -1 )
         {
             strFrom = " FROM  core_stylesheet a , core_style_mode_stylesheet b " +
                 " WHERE a.id_stylesheet = b.id_stylesheet " + " AND b.id_mode = ? ";
         }
 
         strFrom += " ORDER BY a.description ";
 
         String strSQL = strSelect + strFrom;
 
         DAOUtil daoUtil = new DAOUtil( strSQL );
 
         if ( nModeId != -1 )
         {
             daoUtil.setInt( 1, nModeId );
         }
 
         daoUtil.executeQuery(  );
 
         while ( daoUtil.next(  ) )
         {
             StyleSheet stylesheet = new StyleSheet(  );
 
             stylesheet.setId( daoUtil.getInt( 1 ) );
             stylesheet.setDescription( daoUtil.getString( 2 ) );
             stylesheet.setFile( daoUtil.getString( 3 ) );
             stylesheetList.add( stylesheet );
         }
 
         daoUtil.free(  );
 
         return stylesheetList;
     }
 
     /**
      * Update the record in the table
      * @param stylesheet The stylesheet
      */
     public void store( StyleSheet stylesheet )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_UPDATE );
         daoUtil.setInt( 1, stylesheet.getId(  ) );
         daoUtil.setString( 2, stylesheet.getDescription(  ) );
         daoUtil.setString( 3, stylesheet.getFile(  ) );
         daoUtil.setBytes( 4, stylesheet.getSource(  ) );
         daoUtil.setInt( 5, stylesheet.getId(  ) );
 
         daoUtil.executeUpdate(  );
         daoUtil.free(  );
 
         // update the table style_mode_stylesheet
         updateStyleModeStyleSheet( stylesheet );
     }
 
     /**
      * Insert a new record in the table style_mode_stylesheet
      * @param stylesheet the instance of StyleSheet to insert in the table
      */
     private void insertStyleModeStyleSheet( StyleSheet stylesheet )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_INSERT_STYLEMODESTYLESHEET );
 
         daoUtil.setInt( 1, stylesheet.getStyleId(  ) );
         daoUtil.setInt( 2, stylesheet.getModeId(  ) );
         daoUtil.setInt( 3, stylesheet.getId(  ) );
 
         daoUtil.executeUpdate(  );
         daoUtil.free(  );
     }
 
     /**
      * Updates the table style_mode_stylesheet with the data of the StyleShhet
      * instance specified in parameter
      * @param stylesheet the instance of the stylesheet to update
      */
     private void updateStyleModeStyleSheet( StyleSheet stylesheet )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_UPDATE_STYLEMODESTYLESHEET );
 
         daoUtil.setInt( 1, stylesheet.getStyleId(  ) );
         daoUtil.setInt( 2, stylesheet.getModeId(  ) );
         daoUtil.setInt( 3, stylesheet.getId(  ) );
 
         daoUtil.executeUpdate(  );
         daoUtil.free(  );
     }
 
     /**
      * Deletes the data in the table style_mode_stylesheet
      *
      * @param nStyleSheetId the identifier of the stylesheet
      */
     private void deleteStyleModeStyleSheet( int nStyleSheetId )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_DELETEE_STYLEMODESTYLESHEET );
         daoUtil.setInt( 1, nStyleSheetId );
         daoUtil.executeUpdate(  );
         daoUtil.free(  );
     }
 
     /**
      * Returns the number of stylesheets associated to the style and the mode
      * specified in parameter
      * @param nStyleId the style id
      * @param nModeId the mode id
      * @return the number of stylesheet associated
      */
     public int selectStyleSheetNbPerStyleMode( int nStyleId, int nModeId )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_COUNT_STYLESHEET );
 
         daoUtil.setInt( 1, nStyleId );
         daoUtil.setInt( 2, nModeId );
 
         daoUtil.executeQuery(  );
 
         if ( !daoUtil.next(  ) )
         {
             daoUtil.free(  );
             throw new AppException( DAOUtil.MSG_EXCEPTION_SELECT_ERROR + nModeId + " StyleId " + nStyleId );
         }
 
         int nCount = ( daoUtil.getInt( 1 ) );
 
         daoUtil.free(  );
 
         return nCount;
     }
 
     /**
      * Returns the identifier of the mode of the stylesheet whose identifier
      * is specified in parameter
      * @param nIdStylesheet the identifier of the stylesheet
      * @return the identifier of the mode
      */
     public int selectModeId( int nIdStylesheet )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECT_MODEID );
 
         daoUtil.setInt( 1, nIdStylesheet );
         daoUtil.executeQuery(  );
 
         if ( !daoUtil.next(  ) )
         {
             daoUtil.free(  );
             throw new AppException( DAOUtil.MSG_EXCEPTION_SELECT_ERROR + nIdStylesheet );
         }
 
         int nModeId = ( daoUtil.getInt( 1 ) );
 
         daoUtil.free(  );
 
         return nModeId;
     }
 }