/*
 * 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
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE
 * or https://OpenDS.dev.java.net/OpenDS.LICENSE.
 * 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
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE.  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 2009 Sun Microsystems, Inc.
 */

package com.sun.opends.sdk.tools;



import static com.sun.opends.sdk.messages.Messages.*;
import static com.sun.opends.sdk.tools.ToolConstants.*;
import static com.sun.opends.sdk.tools.Utils.*;

import java.io.InputStream;
import java.io.OutputStream;

import org.opends.sdk.*;
import org.opends.sdk.requests.ModifyRequest;
import org.opends.sdk.requests.Requests;
import org.opends.sdk.responses.Result;




/**
 * A load generation tool that can be used to load a Directory Server
 * with Modify requests using one or more LDAP connections.
 */
public final class ModRate extends ConsoleApplication
{
  private BooleanArgument verbose;



  /**
   * The main method for ModRate tool.
   *
   * @param args
   *          The command-line arguments provided to this program.
   */

  public static void main(String[] args)
  {
    int retCode = mainModRate(args, System.in, System.out, System.err);

    if (retCode != 0)
    {
      System.exit(filterExitCode(retCode));
    }
  }



  /**
   * Parses the provided command-line arguments and uses that
   * information to run the modrate tool.
   *
   * @param args
   *          The command-line arguments provided to this program.
   * @return The error code.
   */

  static int mainModRate(String[] args)
  {
    return mainModRate(args, System.in, System.out, System.err);
  }



  /**
   * Parses the provided command-line arguments and uses that
   * information to run the modrate tool.
   *
   * @param args
   *          The command-line arguments provided to this program.
   * @param inStream
   *          The input stream to use for standard input, or
   *          <CODE>null</CODE> if standard input is not needed.
   * @param outStream
   *          The output stream to use for standard output, or
   *          <CODE>null</CODE> if standard output is not needed.
   * @param errStream
   *          The output stream to use for standard error, or
   *          <CODE>null</CODE> if standard error is not needed.
   * @return The error code.
   */

  static int mainModRate(String[] args, InputStream inStream,
      OutputStream outStream, OutputStream errStream)

  {
    return new ModRate(inStream, outStream, errStream).run(args);
  }



  private ModRate(InputStream in, OutputStream out, OutputStream err)
  {
    super(in, out, err);

  }



  private int run(String[] args)
  {
    // Create the command-line argument parser for use with this
    // program.
    LocalizableMessage toolDescription =
        LocalizableMessage.raw("This utility can be used to "
            + "measure modify performance");
    // TODO: correct usage
    ArgumentParser argParser =
        new ArgumentParser(SearchRate.class.getName(), toolDescription,
            false, true, 1, 0, "[modifyString ...]");
    ArgumentParserConnectionFactory connectionFactory;
    ModifyPerformanceRunner runner;

    BooleanArgument showUsage;
    StringArgument propertiesFileArgument;
    BooleanArgument noPropertiesFileArgument;
    StringArgument baseDN;

    try
    {
      connectionFactory =
          new ArgumentParserConnectionFactory(argParser, this);
      runner = new ModifyPerformanceRunner(argParser, this);
      propertiesFileArgument =
          new StringArgument("propertiesFilePath", null,
              OPTION_LONG_PROP_FILE_PATH, false, false, true,
              INFO_PROP_FILE_PATH_PLACEHOLDER.get(), null, null,
              INFO_DESCRIPTION_PROP_FILE_PATH.get());
      argParser.addArgument(propertiesFileArgument);
      argParser.setFilePropertiesArgument(propertiesFileArgument);

      noPropertiesFileArgument =
          new BooleanArgument("noPropertiesFileArgument", null,
              OPTION_LONG_NO_PROP_FILE, INFO_DESCRIPTION_NO_PROP_FILE
                  .get());
      argParser.addArgument(noPropertiesFileArgument);
      argParser.setNoPropertiesFileArgument(noPropertiesFileArgument);

      baseDN =
          new StringArgument("baseDN", OPTION_SHORT_BASEDN,
              OPTION_LONG_BASEDN, true, false, true,
              INFO_BASEDN_PLACEHOLDER.get(), null, null,
              INFO_SEARCH_DESCRIPTION_BASEDN.get());
      baseDN.setPropertyName(OPTION_LONG_BASEDN);
      argParser.addArgument(baseDN);

      verbose =
          new BooleanArgument("verbose", 'v', "verbose",
              INFO_DESCRIPTION_VERBOSE.get());
      verbose.setPropertyName("verbose");
      argParser.addArgument(verbose);

      showUsage =
          new BooleanArgument("showUsage", OPTION_SHORT_HELP,
              OPTION_LONG_HELP, INFO_DESCRIPTION_SHOWUSAGE.get());
      argParser.addArgument(showUsage);
      argParser.setUsageArgument(showUsage, getOutputStream());
    }
    catch (ArgumentException ae)
    {
      LocalizableMessage message = ERR_CANNOT_INITIALIZE_ARGS.get(ae.getMessage());
      println(message);
      return ResultCode.CLIENT_SIDE_PARAM_ERROR.intValue();
    }

    // Parse the command-line arguments provided to this program.
    try
    {
      argParser.parseArguments(args);
      connectionFactory.validate();
      runner.validate();
    }
    catch (ArgumentException ae)
    {
      LocalizableMessage message = ERR_ERROR_PARSING_ARGS.get(ae.getMessage());
      println(message);
      println(argParser.getUsageMessage());
      return ResultCode.CLIENT_SIDE_PARAM_ERROR.intValue();
    }

    // If we should just display usage or version information,
    // then print it and exit.
    if (argParser.usageOrVersionDisplayed())
    {
      return 0;
    }

    runner.modStrings =
        argParser.getTrailingArguments().toArray(
            new String[argParser.getTrailingArguments().size()]);
    runner.baseDN = baseDN.getValue();

    try
    {

      // Try it out to make sure the format string and data sources
      // match.
      Object[] data =
          DataSource.generateData(runner.getDataSources(), null);
      for (String modString : runner.modStrings)
      {
        String.format(modString, data);
      }
      String.format(runner.baseDN, data);
    }
    catch (Exception ex1)
    {
      println(LocalizableMessage.raw("Error formatting filter or base DN: "
          + ex1.toString()));
      return ResultCode.CLIENT_SIDE_PARAM_ERROR.intValue();
    }

    return runner.run(connectionFactory);
  }



  private class ModifyPerformanceRunner extends PerformanceRunner
  {
    private String baseDN;
    private String[] modStrings;



    private ModifyPerformanceRunner(ArgumentParser argParser,
        ConsoleApplication app) throws ArgumentException
    {
      super(argParser, app);
    }



    WorkerThread<?> newWorkerThread(AsynchronousConnection connection,
        ConnectionFactory<?> connectionFactory)
    {
      return new ModifyWorkerThread(connection, connectionFactory);
    }



    StatsThread newStatsThread()
    {
      return new StatsThread(new String[0]);
    }



    private class ModifyWorkerThread extends
        WorkerThread<ResultHandler<Result, Void>>
    {
      private ModifyRequest mr;
      private Object[] data;



      private ModifyWorkerThread(AsynchronousConnection connection,
          ConnectionFactory<?> connectionFactory)
      {
        super(connection, connectionFactory);
      }



      public ResultHandler<Result, Void> getHandler(long startTime)
      {
        return new UpdateStatsResultHandler<Result>(startTime);
      }



      public ResultFuture<?> performOperation(
          AsynchronousConnection connection,
          ResultHandler<Result, Void> handler, DataSource[] dataSources)
      {
        if (dataSources != null)
        {
          data = DataSource.generateData(dataSources, data);
        }
        mr = newModifyRequest(data);
        return connection.modify(mr, handler, null);
      }



      private ModifyRequest newModifyRequest(Object[] data)
      {
        String formattedString;
        int colonPos;
        ModifyRequest mr;
        if (data == null)
        {
          mr = Requests.newModifyRequest(baseDN);
        }
        else
        {
          mr = Requests.newModifyRequest(String.format(baseDN, data));
        }
        for (int i = 0; i < modStrings.length; i++)
        {
          if (data == null)
          {
            formattedString = modStrings[i];
          }
          else
          {
            formattedString = String.format(modStrings[i], data);
          }
          colonPos = formattedString.indexOf(':');
          if (colonPos > 0)
          {
            mr.addChange(ModificationType.REPLACE, formattedString
                .substring(0, colonPos), formattedString
                .substring(colonPos + 1));
          }
        }
        return mr;
      }
    }
  }



  /**
   * Indicates whether or not the user has requested advanced mode.
   *
   * @return Returns <code>true</code> if the user has requested
   *         advanced mode.
   */
  public boolean isAdvancedMode()
  {
    return false;
  }



  /**
   * Indicates whether or not the user has requested interactive
   * behavior.
   *
   * @return Returns <code>true</code> if the user has requested
   *         interactive behavior.
   */
  public boolean isInteractive()
  {
    return false;
  }



  /**
   * Indicates whether or not this console application is running in its
   * menu-driven mode. This can be used to dictate whether output should
   * go to the error stream or not. In addition, it may also dictate
   * whether or not sub-menus should display a cancel option as well as
   * a quit option.
   *
   * @return Returns <code>true</code> if this console application is
   *         running in its menu-driven mode.
   */
  public boolean isMenuDrivenMode()
  {
    return false;
  }



  /**
   * Indicates whether or not the user has requested quiet output.
   *
   * @return Returns <code>true</code> if the user has requested quiet
   *         output.
   */
  public boolean isQuiet()
  {
    return false;
  }



  /**
   * Indicates whether or not the user has requested script-friendly
   * output.
   *
   * @return Returns <code>true</code> if the user has requested
   *         script-friendly output.
   */
  public boolean isScriptFriendly()
  {
    return false;
  }



  /**
   * Indicates whether or not the user has requested verbose output.
   *
   * @return Returns <code>true</code> if the user has requested verbose
   *         output.
   */
  public boolean isVerbose()
  {
    return verbose.isPresent();
  }
}