/*
    *  Licensed to the Apache Software Foundation (ASF) under one
    *  or more contributor license agreements.  See the NOTICE file
    *  distributed with this work for additional information
    *  regarding copyright ownership.  The ASF licenses this file
    *  to you under the Apache License, Version 2.0 (the
    *  "License"); you may not use this file except in compliance
    *  with the License.  You may obtain a copy of the License at
    *
   *    https://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   *
   */
  package org.apache.directory.api.ldap.codec.actions.request.modifydn;
  
  
  import org.apache.directory.api.asn1.DecoderException;
  import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
  import org.apache.directory.api.asn1.ber.tlv.TLV;
  import org.apache.directory.api.i18n.I18n;
  import org.apache.directory.api.ldap.codec.api.LdapMessageContainer;
  import org.apache.directory.api.ldap.codec.api.ResponseCarryingException;
  import org.apache.directory.api.ldap.model.exception.LdapInvalidDnException;
  import org.apache.directory.api.ldap.model.message.ModifyDnRequest;
  import org.apache.directory.api.ldap.model.message.ModifyDnResponseImpl;
  import org.apache.directory.api.ldap.model.message.ResultCodeEnum;
  import org.apache.directory.api.ldap.model.name.Dn;
  import org.apache.directory.api.ldap.model.name.DnFactory;
  import org.apache.directory.api.util.Strings;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  /**
   * The action used to store the ModifyDnRequest new Superior
   * <pre>
   * ModifyDNRequest ::= [APPLICATION 12] SEQUENCE { ...
   *     ...
   *     newSuperior [0] LDAPDN OPTIONAL }
   * </pre>
   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
   */
  public class StoreModifyDnRequestNewSuperior extends GrammarAction<LdapMessageContainer<ModifyDnRequest>>
  {
      /** The logger */
      private static final Logger LOG = LoggerFactory.getLogger( StoreModifyDnRequestNewSuperior.class );
  
      /**
       * Instantiates a new action.
       */
      public StoreModifyDnRequestNewSuperior()
      {
          super( "Store new superior" );
      }
  
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void action( LdapMessageContainer<ModifyDnRequest> container ) throws DecoderException
      {
          ModifyDnRequest modifyDnRequest = container.getMessage();
  
          // Get the Value and store it in the modifyDNRequest
          TLV tlv = container.getCurrentTLV();
  
          // We have to handle the special case of a 0 length matched
          // Dn
          if ( tlv.getLength() == 0 )
          {
  
              if ( modifyDnRequest.getDeleteOldRdn() )
              {
                  // This will generate a PROTOCOL_ERROR
                  throw new DecoderException( I18n.err( I18n.ERR_05128_NULL_SUPERIOR ) );
              }
              else
              {
                  if ( LOG.isWarnEnabled() )
                  {
                      LOG.warn( I18n.msg( I18n.MSG_05139_NULL_NEW_SUPERIOR ) );
                  }
              }
  
              modifyDnRequest.setNewSuperior( Dn.EMPTY_DN );
          }
          else
          {
              byte[] dnBytes = tlv.getValue().getData();
              String dnStr = Strings.utf8ToString( dnBytes );
  
              try
             {
                 DnFactory dnFactory = container.getDnFactory();
                 Dn newSuperior;
                 
                 if ( dnFactory == null )
                 {
                     newSuperior = new Dn( dnStr );
                 }
                 else
                 {
                     newSuperior = dnFactory.create( dnStr );
                 }
 
                 modifyDnRequest.setNewSuperior( newSuperior );
             }
             catch ( LdapInvalidDnException ine )
             {
                 String msg = I18n.err( I18n.ERR_05129_INVALID_NEW_SUPERIOR, dnStr, Strings.dumpBytes( dnBytes ) );
                 LOG.error( I18n.err( I18n.ERR_05114_ERROR_MESSAGE, msg, ine.getMessage() ) );
 
                 ModifyDnResponseImpl response = new ModifyDnResponseImpl( modifyDnRequest.getMessageId() );
                 throw new ResponseCarryingException( msg, response, ResultCodeEnum.INVALID_DN_SYNTAX,
                     modifyDnRequest.getName(), ine );
             }
         }
 
         // We can have an END transition
         container.setGrammarEndAllowed( true );
 
         if ( LOG.isDebugEnabled() )
         {
             LOG.debug( I18n.msg( I18n.MSG_05140_NEW_SUPERIOR_DN, modifyDnRequest.getNewSuperior() ) );
         }
     }
 }