/*
    *  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.del;
  
  
  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.DeleteRequest;
  import org.apache.directory.api.ldap.model.message.DeleteRequestImpl;
  import org.apache.directory.api.ldap.model.message.DeleteResponseImpl;
  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 initialize the DelRequest.
   * <pre>
   * LdapMessage ::= ... DelRequest ...
   * delRequest ::= [APPLICATION 10] LDAPDN
   *
   * We store the Dn to bve deleted into the DelRequest object
   * </pre>
   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
   */
  public class InitDelRequest extends GrammarAction<LdapMessageContainer<DeleteRequest>>
  {
      /** The logger */
      private static final Logger LOG = LoggerFactory.getLogger( InitDelRequest.class );
  
      /**
       * Instantiates a new action.
       */
      public InitDelRequest()
      {
          super( "Delete Request initialization" );
      }
  
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void action( LdapMessageContainer<DeleteRequest> container ) throws DecoderException
      {
          // Create the DeleteRequest LdapMessage instance and store it in the container
          DeleteRequest delRequest = new DeleteRequestImpl();
          delRequest.setMessageId( container.getMessageId() );
          container.setMessage( delRequest );
  
          // And store the Dn into it
          // Get the Value and store it in the DelRequest
          TLV tlv = container.getCurrentTLV();
  
          // We have to handle the special case of a 0 length matchedDN
          if ( tlv.getLength() == 0 )
          {
              // This will generate a PROTOCOL_ERROR
              throw new DecoderException( I18n.err( I18n.ERR_05119_NULL_ENTRY ) );
          }
          else
          {
              byte[] dnBytes = tlv.getValue().getData();
              String dnStr = Strings.utf8ToString( dnBytes );
  
              try
              {
                  DnFactory dnFactory = container.getDnFactory();
                  Dn entryDn;
                  
                  if ( dnFactory == null )
                  {
                      entryDn = new Dn( dnStr );
                  }
                 else
                 {
                     entryDn = dnFactory.create( dnStr );
                 }
 
                 delRequest.setName( entryDn );
             }
             catch ( LdapInvalidDnException ine )
             {
                 String msg = I18n.err( I18n.ERR_05120_INVALID_DELETE_DN, dnStr, 
                     Strings.dumpBytes( dnBytes ), ine.getLocalizedMessage() );
                 LOG.error( msg );
 
                 DeleteResponseImpl response = new DeleteResponseImpl( delRequest.getMessageId() );
                 throw new ResponseCarryingException( msg, response, ResultCodeEnum.INVALID_DN_SYNTAX,
                     Dn.EMPTY_DN, ine );
             }
         }
 
         if ( LOG.isDebugEnabled() )
         {
             LOG.debug( I18n.msg( I18n.MSG_05124_DELETING_DN, delRequest.getName() ) );
         }
 
         // We can have an END transition
         container.setGrammarEndAllowed( true );
     }
 }