/*
 * The contents of this file are subject to the terms of the Common Development and
 * Distribution License (the License). You may not use this file except in compliance with the
 * License.
 *
 * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
 * specific language governing permission and limitations under the License.
 *
 * When distributing Covered Software, include this CDDL Header Notice in each file and include
 * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
 * Header, with the fields enclosed by brackets [] replaced by your own identifying
 * information: "Portions Copyright [year] [name of copyright owner]".
 *
 * Copyright 2016 ForgeRock AS.
 * Portions Copyright 2026 3A Systems, LLC.
 */

package org.forgerock.opendj.examples;

import static org.forgerock.opendj.server.embedded.ConfigParameters.configParams;
import static org.forgerock.opendj.server.embedded.ConnectionParameters.connectionParams;
import static org.forgerock.opendj.server.embedded.EmbeddedDirectoryServer.manageEmbeddedDirectoryServer;
import static java.util.Arrays.asList;

import java.io.File;
import java.io.IOException;

import org.forgerock.opendj.config.AdminException;
import org.forgerock.opendj.config.client.ManagementContext;
import org.forgerock.opendj.ldap.DN;
import org.forgerock.opendj.server.config.client.BackendCfgClient;
import org.forgerock.opendj.server.embedded.EmbeddedDirectoryServer;
import org.forgerock.opendj.server.embedded.EmbeddedDirectoryServerException;

/**
 * Provides an example of read and update of the configuration of a server that
 * is already installed.
 * <p>
 * The server may be running or not.
 */
public final class ConfigureServer {

    /**
     * Main method.
     * <p>
     * Read the current base Dn of user backend and then change it
     * to the one provided as argument.
     *
     * @param args
     *            The command line arguments: serverRootDir newBaseDn [ldapPort]
     */
    public static void main(final String[] args) {
        if (args.length != 2 && args.length != 3) {
            System.err.println("Usage: serverRootDir newBaseDn [ldapPort]");
            System.exit(1);
        }
        final String serverRootDir = args[0];
        final String newBaseDn = args[1];
        final int ldapPort = args.length > 2 ? parsePort(args[2]) : 1500;

        EmbeddedDirectoryServer server =
                manageEmbeddedDirectoryServer(
                        configParams()
                            .serverRootDirectory(serverRootDir)
                            .configurationFile(serverRootDir + File.separator + "config/config.ldif"),
                        connectionParams()
                            .hostName("localhost")
                            .ldapPort(ldapPort)
                            .bindDn("cn=Directory Manager")
                            .bindPassword("password"),
                        System.out,
                        System.err);

        // read the current base DN(s) of user backend and update it
        try (ManagementContext config = server.getConfiguration()) {
            BackendCfgClient userRoot = config.getRootConfiguration().getBackend("userRoot");
            System.out.println("The current base Dn(s) of the user backend are: " + userRoot.getBaseDN());
            userRoot.setBaseDN(asList(DN.valueOf(newBaseDn)));
            userRoot.commit();
            System.out.println("The base Dn of the user backend has been set to: " + newBaseDn);
        } catch (AdminException | IOException | EmbeddedDirectoryServerException e) {
            System.err.println("A problem occured when reading/updating configuration: " + e.toString());
        }
    }

    /**
     * Returns the port number held by the provided command line argument.
     * <p>
     * Like the other command line argument checks of this example, a value which is not a port
     * number is reported on standard error and stops the example.
     */
    private static int parsePort(final String arg) {
        try {
            return Integer.parseInt(arg);
        } catch (final NumberFormatException e) {
            System.err.println("Invalid port number: " + arg);
            System.exit(1);
            return -1; // Never reached: System.exit() does not return.
        }
    }

    private ConfigureServer() {
        // Not used.
    }
}