/*
    * Copyright (c) 2002-2015, 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.adminwall.business;
  
  import fr.paris.lutece.portal.service.plugin.Plugin;
  import fr.paris.lutece.util.sql.DAOUtil;
  
  import java.util.ArrayList;
  import java.util.Collection;
  
  
  /**
   * This class provides Data Access methods for Link objects
   */
  public final class LinkDAO implements ILinkDAO
  {
      // Constants
      private static final String SQL_QUERY_NEW_PK = "SELECT max( id_link ) FROM adminwall_link";
      private static final String SQL_QUERY_SELECT = "SELECT id_link, post, hashtag FROM adminwall_link WHERE id_link = ?";
      private static final String SQL_QUERY_INSERT = "INSERT INTO adminwall_link ( id_link, post, hashtag) VALUES ( ?, ?, ?) ";
      private static final String SQL_QUERY_DELETE = "DELETE FROM adminwall_link WHERE id_link = ? ";
      private static final String SQL_QUERY_UPDATE = "UPDATE adminwall_link SET id_link = ?, post = ?, hashtag = ? WHERE id_link = ?";
      private static final String SQL_QUERY_SELECTALL = "SELECT id_link, post, hashtag FROM adminwall_link";
      private static final String SQL_QUERY_SELECT_TAG = "SELECT id_link, post, hashtag FROM adminwall_link WHERE hashtag= ?";
  
      /**
       * Generates a new primary key
       * @param plugin The Plugin
       * @return The new primary key
       */
      public int newPrimaryKey( Plugin plugin )
      {
          DAOUtil daoUtil = new DAOUtil( SQL_QUERY_NEW_PK, plugin );
          daoUtil.executeQuery(  );
  
          int nKey = 1;
  
          if ( daoUtil.next(  ) )
          {
              nKey = daoUtil.getInt( 1 ) + 1;
          }
  
          daoUtil.free(  );
  
          return nKey;
      }
  
      /**
       * {@inheritDoc }
       */
      @Override
      public void insert( Link link, Plugin plugin )
      {
          DAOUtil daoUtil = new DAOUtil( SQL_QUERY_INSERT, plugin );
  
          link.setIdLink( newPrimaryKey( plugin ) );
  
          daoUtil.setInt( 1, link.getIdLink(  ) );
          daoUtil.setInt( 2, link.getPost(  ) );
          daoUtil.setInt( 3, link.getHashtag(  ) );
  
          daoUtil.executeUpdate(  ); //BUG
          daoUtil.free(  );
      }
  
      /**
       * {@inheritDoc }
       */
     @Override
     public Link load( int nKey, Plugin plugin )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECT, plugin );
         daoUtil.setInt( 1, nKey );
         daoUtil.executeQuery(  );
 
         Link link = null;
 
         if ( daoUtil.next(  ) )
         {
             link = new Link(  );
             link.setIdLink( daoUtil.getInt( 1 ) );
             link.setPost( daoUtil.getInt( 2 ) );
             link.setHashtag( daoUtil.getInt( 3 ) );
         }
 
         daoUtil.free(  );
 
         return link;
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public void delete( int nLinkId, Plugin plugin )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_DELETE, plugin );
         daoUtil.setInt( 1, nLinkId );
         daoUtil.executeUpdate(  );
         daoUtil.free(  );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public void store( Link link, Plugin plugin )
     {
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_UPDATE, plugin );
 
         daoUtil.setInt( 1, link.getIdLink(  ) );
         daoUtil.setInt( 2, link.getPost(  ) );
         daoUtil.setInt( 3, link.getHashtag(  ) );
         daoUtil.setInt( 4, link.getIdLink(  ) );
 
         daoUtil.executeUpdate(  );
         daoUtil.free(  );
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public Collection<Link> selectLinksList( Plugin plugin )
     {
         Collection<Link> linkList = new ArrayList<Link>(  );
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECTALL, plugin );
         daoUtil.executeQuery(  );
 
         while ( daoUtil.next(  ) )
         {
             Link link = new Link(  );
 
             link.setIdLink( daoUtil.getInt( 1 ) );
             link.setPost( daoUtil.getInt( 2 ) );
             link.setHashtag( daoUtil.getInt( 3 ) );
 
             linkList.add( link );
         }
 
         daoUtil.free(  );
 
         return linkList;
     }
 
     /**
      * {@inheritDoc }
      */
     @Override
     public Collection<Link> selectLinksListTag( int hashtag, Plugin plugin )
     {
         Collection<Link> linkList = new ArrayList<Link>(  );
         DAOUtil daoUtil = new DAOUtil( SQL_QUERY_SELECT_TAG, plugin );
         daoUtil.setInt( 1, hashtag );
         daoUtil.executeQuery(  );
 
         while ( daoUtil.next(  ) )
         {
             Link link = new Link(  );
 
             link.setIdLink( daoUtil.getInt( 1 ) );
             link.setPost( daoUtil.getInt( 2 ) );
             link.setHashtag( daoUtil.getInt( 3 ) );
 
             linkList.add( link );
         }
 
         daoUtil.free(  );
 
         return linkList;
     }
 }