/*
 * 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
 * information:
 *      Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 *
 *      Copyright 2008-2009 Sun Microsystems, Inc.
 *      Portions Copyright 2013-2015 ForgeRock AS.
 */

package org.opends.server.tools;
import org.forgerock.i18n.LocalizableMessage;

import java.io.OutputStream;
import java.io.PrintStream;

import org.opends.server.loggers.JDKLogging;
import org.opends.server.types.NullOutputStream;

import static org.opends.messages.ToolMessages.*;
import static com.forgerock.opendj.util.OperatingSystem.hasUAC;
import static com.forgerock.opendj.cli.Utils.filterExitCode;

/**
  * This class is used to start the Windows service associated with this
  * instance on this machine.
  * This tool allows to start OpenDS and to make it run as a Windows service.
  */
public class StartWindowsService
{
  /**
    * The service was successfully started.
    */
  private static int SERVICE_START_SUCCESSFUL;
  /**
    * The service could not be found.
    */
  private static int SERVICE_NOT_FOUND = 1;

  /**
    * The service could not be started.
    */
  private static int SERVICE_START_ERROR = 2;

  /**
   * Invokes the net start on the service corresponding to this server.
   *
   * @param  args  The command-line arguments provided to this program.
   */
  public static void main(String[] args)
  {
    int result = startWindowsService(System.out, System.err);

    System.exit(filterExitCode(result));
  }

  /**
   * Invokes the net start on the service corresponding to this server, it
   * writes information and error messages in the provided streams.
   * @return <CODE>SERVICE_START_SUCCESSFUL</CODE>,
   * <CODE>SERVICE_NOT_FOUND</CODE>, <CODE>SERVICE_ALREADY_STARTED</CODE> or
   * <CODE>SERVICE_START_ERROR</CODE> depending on whether the service could be
   * stopped or not.
   * @param  outStream  The stream to write standard output messages.
   * @param  errStream  The stream to write error messages.
   */
  public static int startWindowsService(OutputStream outStream,
                           OutputStream errStream)
  {
    int returnValue;
    NullOutputStream.wrapOrNullStream(outStream);
    PrintStream err = NullOutputStream.wrapOrNullStream(errStream);
    JDKLogging.disableLogging();

    String serviceName = ConfigureWindowsService.getServiceName();
    if (serviceName == null)
    {
      LocalizableMessage message = ERR_WINDOWS_SERVICE_NOT_FOUND.get();
      err.println(message);
      returnValue = SERVICE_NOT_FOUND;
    }
    else
    {
      String[] cmd;
      if (hasUAC())
      {
        cmd= new String[] {
            ConfigureWindowsService.getLauncherBinaryFullPath(),
            ConfigureWindowsService.LAUNCHER_OPTION,
            ConfigureWindowsService.getLauncherAdministratorBinaryFullPath(),
            ConfigureWindowsService.LAUNCHER_OPTION,
            "net",
            "start",
            serviceName
        };
      }
      else
      {
        cmd= new String[] {
            "net",
            "start",
            serviceName
        };
      }
      /* Check if is a running service */
      try
      {
        if (Runtime.getRuntime().exec(cmd).waitFor() == 0)
        {
          returnValue = SERVICE_START_SUCCESSFUL;
        }
        else
        {
          returnValue = SERVICE_START_ERROR;
        }
      }
      catch (Throwable t)
      {
        LocalizableMessage message = ERR_WINDOWS_SERVICE_START_ERROR.get();
        err.println(message);
        err.println("Exception:" + t);
        returnValue = SERVICE_START_ERROR;
      }
    }
    return returnValue;
  }
}