001/*
002 * Copyright © 2025 CUI-OpenSource-Software (info@cuioss.de)
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package de.cuioss.test.generator.domain;
017
018import de.cuioss.test.generator.TypedGenerator;
019
020import java.util.ArrayList;
021import java.util.List;
022
023import static de.cuioss.test.generator.Generators.fixedValues;
024import static de.cuioss.test.generator.Generators.integers;
025
026/**
027 * Generates LDAP Distinguished Names (DN) for testing purposes.
028 * The generated DNs follow the standard format of comma-separated name-value pairs.
029 * 
030 * <p>Components:</p>
031 * <ul>
032 *   <li>Prefixes: ou (Organizational Unit), o (Organization), dc (Domain Component)</li>
033 *   <li>Values: Common LDAP terms like proxies, accounts, groups, roles, etc.</li>
034 * </ul>
035 * 
036 * <p>Generation rules:</p>
037 * <ul>
038 *   <li>Each DN contains 2-12 components</li>
039 *   <li>Components are in the format prefix=value</li>
040 *   <li>Components are joined with commas</li>
041 * </ul>
042 * 
043 * <p><em>Example outputs:</em></p>
044 * <pre>
045 * "ou=proxies,dc=accounts,o=services"
046 * "dc=groups,ou=roles,dc=ID"
047 * </pre>
048 * 
049 * <p><em>Example usage:</em></p>
050 * <pre>
051 * var generator = new DistinguishedNamesGenerator();
052 * String dn = generator.next(); // Returns a valid LDAP DN string
053 * </pre>
054 *
055 * @author Oliver Wolff
056 */
057public class DistinguishedNamesGenerator implements TypedGenerator<String> {
058
059    private final TypedGenerator<String> prefixes = fixedValues("ou", "o", "dc");
060    private final TypedGenerator<String> values = fixedValues("proxies", "ID", "dc", "accounts", "groups", "roles",
061            "services");
062
063    @Override
064    public String next() {
065        List<String> elements = new ArrayList<>();
066        int count = integers(2, 12).next();
067        for (var i = 0; i < count; i++) {
068            elements.add(prefixes.next() + "=" + values.next());
069        }
070        return String.join(",", elements);
071    }
072
073    @Override
074    public Class<String> getType() {
075        return String.class;
076    }
077}