/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
 * or http://forgerock.org/license/CDDLv1.0.html.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at legal-notices/CDDLv1_0.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
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 *      Portions Copyright [yyyy] [name of copyright owner]
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 *
 *      Copyright 2006-2008 Sun Microsystems, Inc.
 *      Portions Copyright 2013-2015 ForgeRock AS.
 */
package org.opends.quicksetup.installer;

import org.opends.quicksetup.Constants;
import org.opends.quicksetup.util.Utils;

/**
 * This class is used to provide a data model for the Data Replication
 * Options panel of the installer.
 */
public class DataReplicationOptions
{
  /**
   * This enumeration is used to know what the user wants to do for the data
   * (import data or not, what use as source of the data...).
   */
  public enum Type
  {
    /**
     * Standalone server.
     */
    STANDALONE,
    /**
     * Replicate Contents and this is the first server in topology..
     */
    FIRST_IN_TOPOLOGY,
    /**
     * Replicate Contents of the new Suffix with existing server.
     */
    IN_EXISTING_TOPOLOGY
  }

  private Type type;
  private int replicationPort = getDefaultReplicationPort();
  private boolean secureReplication;
  private AuthenticationData authenticationData = new AuthenticationData();
  {
    authenticationData.setDn(Constants.DIRECTORY_MANAGER_DN);
    authenticationData.setPort(4444);
  }

  /**
   * Private constructor for the DataReplicationOptions object.
   */
  private DataReplicationOptions()
  {
  }

  /**
   * Construct an FIRST_IN_TOPOLOGY object.
   * @param replicationPort the replication port.
   * @param secureReplication whether servers must encrypt data for the
   * replication communication with this server.
   * @return the FIRST_IN_TOPOLOGY object.
   */
  public static DataReplicationOptions createFirstInTopology(
      int replicationPort, boolean secureReplication)
  {
    DataReplicationOptions options = new DataReplicationOptions();
    options.type = Type.FIRST_IN_TOPOLOGY;
    options.replicationPort = replicationPort;
    options.secureReplication = secureReplication;
    return options;
  }

  /**
   * Construct an STANDALONE object.
   * @return the STANDALONE object.
   */
  public static DataReplicationOptions createStandalone()
  {
    DataReplicationOptions options = new DataReplicationOptions();
    options.type = Type.STANDALONE;
    return options;
  }

  /**
   * Construct an IN_EXISTING_TOPOLOGY object.
   * @param authenticationData the authentication data.
   * @param replicationPort the replication port.
   * @param secureReplication whether servers must encrypt data for the
   * replication communication with this server.
   * @return the IN_EXISTING_TOPOLOGY object.
   */
  public static DataReplicationOptions createInExistingTopology(
      AuthenticationData authenticationData, int replicationPort,
      boolean secureReplication)
  {
    DataReplicationOptions options = new DataReplicationOptions();
    options.type = Type.IN_EXISTING_TOPOLOGY;
    options.authenticationData = authenticationData;
    options.replicationPort = replicationPort;
    options.secureReplication = secureReplication;
    return options;
  }

  /**
   * Returns the type of DataReplicationOptions represented by this object
   * (replicate or not).
   *
   * @return the type of DataReplicationOptions.
   */
  public Type getType()
  {
    return type;
  }

  /**
   * Returns the AuthenticationData to the server used to replicate.
   * If it is standalone returns null.
   *
   * @return the AuthenticationData to the server used to replicate.
   */
  public AuthenticationData getAuthenticationData()
  {
    return authenticationData;
  }

  /**
   * Returns the port that is going to be used for replication.
   *
   * @return the replication that must be used to configure replication.
   */
  public int getReplicationPort()
  {
    return replicationPort;
  }

  /**
   * Returns whether servers must encrypt data for the replication communication
   * with this server.
   *
   * @return <CODE>true</CODE> if the servers must encrypt data for the
   * replication communication and <CODE>false</CODE> otherwise.
   */
  public boolean useSecureReplication()
  {
    return secureReplication;
  }

  /**
   * Provides the port that will be proposed to the user in the replication
   * options panel of the installation wizard. It will check whether we can use
   * ports of type X989 and if not it will return -1.
   *
   * @return the free port of type X989 if it is available and we can use and -1
   * if not.
   */
  static int getDefaultReplicationPort()
  {
    int defaultPort = -1;

    for (int i=0;i<10000 && defaultPort == -1;i+=1000)
    {
      int port = i + Constants.DEFAULT_REPLICATION_PORT;
      if (Utils.canUseAsPort(port))
      {
        defaultPort = port;
      }
    }
    return defaultPort;
  }
}