/*
    *  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
    *
   *    http://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.modifyRequest;
  
  
  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.ldap.codec.api.LdapMessageContainer;
  import org.apache.directory.api.ldap.codec.api.ResponseCarryingException;
  import org.apache.directory.api.ldap.codec.decorators.ModifyRequestDecorator;
  import org.apache.directory.api.ldap.model.exception.LdapInvalidDnException;
  import org.apache.directory.api.ldap.model.message.ModifyRequest;
  import org.apache.directory.api.ldap.model.message.ModifyResponseImpl;
  import org.apache.directory.api.ldap.model.message.ResultCodeEnum;
  import org.apache.directory.api.ldap.model.name.Dn;
  import org.apache.directory.api.util.Strings;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  /**
   * The action used to store the ModificationRequest object name
   * <pre>
   * ModifyRequest ::= [APPLICATION 6] SEQUENCE {
   *     object    LDAPDN,
   *     ...
   * </pre>
   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
   */
  public class StoreModifyRequestObjectName extends GrammarAction<LdapMessageContainer<ModifyRequestDecorator>>
  {
      /** The logger */
      private static final Logger LOG = LoggerFactory.getLogger( StoreModifyRequestObjectName.class );
  
      /** Speedup for logs */
      private static final boolean IS_DEBUG = LOG.isDebugEnabled();
  
  
      /**
       * Instantiates a new action.
       */
      public StoreModifyRequestObjectName()
      {
          super( "Store Modify request object Name" );
      }
  
  
      /**
       * {@inheritDoc}
       */
      public void action( LdapMessageContainer<ModifyRequestDecorator> container ) throws DecoderException
      {
          ModifyRequestDecorator modifyRequestDecorator = container.getMessage();
          ModifyRequest modifyRequest = modifyRequestDecorator.getDecorated();
  
          TLV tlv = container.getCurrentTLV();
  
          Dn object = Dn.EMPTY_DN;
  
          // Store the value.
          if ( tlv.getLength() == 0 )
          {
              ( modifyRequestDecorator.getDecorated() ).setName( object );
          }
          else
          {
              byte[] dnBytes = tlv.getValue().getData();
              String dnStr = Strings.utf8ToString( dnBytes );
  
              try
              {
                  object = new Dn( dnStr );
              }
              catch ( LdapInvalidDnException ine )
              {
                  String msg = "Invalid Dn given : " + dnStr + " (" + Strings.dumpBytes( dnBytes )
                      + ") is invalid";
                  LOG.error( "{} : {}", msg, ine.getMessage() );
  
                  ModifyResponseImpl response = new ModifyResponseImpl( modifyRequest.getMessageId() );
                  throw new ResponseCarryingException( msg, response, ResultCodeEnum.INVALID_DN_SYNTAX,
                     Dn.EMPTY_DN, ine );
             }
 
             modifyRequest.setName( object );
         }
 
         if ( IS_DEBUG )
         {
             LOG.debug( "Modification of Dn {}", modifyRequest.getName() );
         }
     }
 }