/*
 * Copyright 2005-2013 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
 *
 *      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.springframework.ldap.samples.utils;

import javax.naming.Name;

import org.springframework.ldap.core.DirContextOperations;
import org.springframework.ldap.core.LdapTemplate;
import org.springframework.ldap.core.support.AbstractContextMapper;
import org.springframework.ldap.support.LdapUtils;

public class LdapTreeBuilder {

	private LdapTemplate ldapTemplate;

	public LdapTreeBuilder(LdapTemplate ldapTemplate) {
		this.ldapTemplate = ldapTemplate;
	}

	public LdapTree getLdapTree(Name root) {
		DirContextOperations context = ldapTemplate.lookupContext(root);
		return getLdapTree(context);
	}

	private LdapTree getLdapTree(final DirContextOperations rootContext) {
		final LdapTree ldapTree = new LdapTree(rootContext);
		ldapTemplate.listBindings(rootContext.getDn(),
				new AbstractContextMapper<Object>() {
					@Override
					protected Object doMapFromContext(DirContextOperations ctx) {
						Name dn = ctx.getDn();
						dn = LdapUtils.prepend(dn, rootContext.getDn());
						ldapTree.addSubTree(getLdapTree(ldapTemplate
								.lookupContext(dn)));
						return null;
					}
				});

		return ldapTree;
	}
}
