/*
    * Copyright 2019 the original author or authors.
    *
    * Licensed 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.bremersee.dccon.repository.ldap;
  
  import static org.bremersee.data.ldaptive.LdaptiveEntryMapper.getAttributeValue;
  import static org.bremersee.data.ldaptive.LdaptiveEntryMapper.setAttribute;
  import static org.bremersee.data.ldaptive.LdaptiveEntryMapper.setAttributes;
  import static org.bremersee.dccon.repository.ldap.DomainGroupLdapConstants.DESCRIPTION;
  import static org.bremersee.dccon.repository.ldap.DomainGroupLdapConstants.MEMBER;
  import static org.bremersee.dccon.repository.ldap.DomainGroupLdapConstants.NAME;
  import static org.bremersee.dccon.repository.ldap.DomainGroupLdapConstants.OBJECT_SID;
  import static org.bremersee.dccon.repository.ldap.DomainGroupLdapConstants.SAM_ACCOUNT_NAME;
  
  import java.util.ArrayList;
  import java.util.List;
  import org.bremersee.data.ldaptive.LdaptiveEntryMapper;
  import org.bremersee.dccon.config.DomainControllerProperties;
  import org.bremersee.dccon.model.DomainGroup;
  import org.bremersee.dccon.repository.ldap.transcoder.GroupMemberValueTranscoder;
  import org.bremersee.dccon.repository.ldap.transcoder.SidValueTranscoder;
  import org.ldaptive.AttributeModification;
  import org.ldaptive.LdapEntry;
  import org.ldaptive.io.StringValueTranscoder;
  
  /**
   * The domain group ldap mapper.
   *
   * @author Christian Bremer
   */
  public class DomainGroupLdapMapper extends AbstractLdapMapper
      implements LdaptiveEntryMapper<DomainGroup> {
  
    private static final StringValueTranscoder STRING_VALUE_TRANSCODER = new StringValueTranscoder();
  
    private GroupMemberValueTranscoder groupMemberValueTranscoder;
  
    private SidValueTranscoder sidValueTranscoder;
  
    /**
     * Instantiates a new domain group ldap mapper.
     *
     * @param properties the properties
     */
    public DomainGroupLdapMapper(DomainControllerProperties properties) {
      super(properties);
      this.groupMemberValueTranscoder = new GroupMemberValueTranscoder(properties);
      this.sidValueTranscoder = new SidValueTranscoder(properties);
    }
  
    @Override
    public String[] getObjectClasses() {
      return new String[0];
    }
  
    @Override
    public String mapDn(final DomainGroup domainGroup) {
      return createDn(
          getProperties().getGroupRdn(),
          domainGroup.getName(),
          getProperties().getGroupBaseDn());
    }
  
    @Override
    public DomainGroup map(final LdapEntry ldapEntry) {
      if (ldapEntry == null) {
        return null;
      }
      final DomainGroup destination = new DomainGroup();
      map(ldapEntry, destination);
      return destination;
    }
  
    @Override
    public void map(
        final LdapEntry ldapEntry,
        final DomainGroup domainGroup) {
      if (ldapEntry == null) {
        return;
      }
      mapCommonAttributes(ldapEntry, domainGroup);
      domainGroup.setSid(getAttributeValue(ldapEntry, OBJECT_SID, sidValueTranscoder, null));
      domainGroup.setName(getAttributeValue(ldapEntry, NAME, STRING_VALUE_TRANSCODER, null));
      domainGroup
          .setDescription(getAttributeValue(ldapEntry, DESCRIPTION, STRING_VALUE_TRANSCODER, null));
      domainGroup.setMembers(LdaptiveEntryMapper.getAttributeValuesAsList(
         ldapEntry,
         MEMBER,
         groupMemberValueTranscoder));
     domainGroup.getMembers().sort(String::compareToIgnoreCase);
   }
 
   @Override
   public AttributeModification[] mapAndComputeModifications(
       final DomainGroup source,
       final LdapEntry destination) {
     final List<AttributeModification> modifications = new ArrayList<>();
     setAttribute(destination,
         NAME, source.getName(), false, STRING_VALUE_TRANSCODER, modifications);
     setAttribute(destination,
         SAM_ACCOUNT_NAME, source.getName(), false, STRING_VALUE_TRANSCODER, modifications);
     setAttribute(destination,
         DESCRIPTION, source.getDescription(), false, STRING_VALUE_TRANSCODER, modifications);
     setAttributes(
         destination,
         MEMBER,
         source.getMembers(),
         false,
         groupMemberValueTranscoder,
         modifications);
     return modifications.toArray(new AttributeModification[0]);
   }
 
 }