/***************************************************************************

  musrStep.cpp

  Author: Andreas Suter
  e-mail: andreas.suter@psi.ch

***************************************************************************/

/***************************************************************************
 *   Copyright (C) 2007-2025 by Andreas Suter                              *
 *   andreas.suter@psi.ch                                                  *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

/**
 * @file musrStep.cpp
 * @brief Main entry point for the musrStep application.
 * @details musrStep is a Qt-based GUI application for adjusting fit parameter
 * step sizes in muSR msr-files. It provides an interactive interface to view,
 * select, and modify the step values of fit parameters used by musrfit.
 *
 * The application supports both automatic step size adjustment based on
 * parameter naming conventions and manual scaling by user-defined factors.
 *
 * @author Andreas Suter
 * @date 2007-2025
 * @copyright GNU General Public License v2 or later
 */

#include <iostream>
#include <cstring>

#include <QApplication>

#include <QtDebug>

#ifdef HAVE_GIT_REV_H
#include "git-revision.h"
#endif
#include "PMusrStep.h"

//-------------------------------------------------------------------------
/**
 * @brief Prints the command-line syntax and usage information to stdout.
 * @details This function displays the available command-line options:
 * - \<fln\>: The msr-file name to open and edit
 * - -v, --version: Display git version information
 * - -h, --help: Display this help message
 */
void musrStep_syntax()
{
  std::cout << std::endl;
  std::cout << "usage: musrStep <fln> | [-v | --version] | [-h | --help]" << std::endl;
  std::cout << "       <fln>: msr-file name." << std::endl;
  std::cout << "       -v, --version: print the current git-version to the stdout" << std::endl;
  std::cout << "       -h, --help: print this help" << std::endl;
  std::cout << std::endl << std::endl;
}

//-------------------------------------------------------------------------
/**
 * @brief Main entry point for the musrStep application.
 * @details Parses command-line arguments and launches the musrStep GUI.
 *
 * The application expects exactly one argument which can be:
 * - A path to an msr-file to open
 * - -v or --version to display version information
 * - -h or --help to display usage information
 *
 * @param argc Number of command-line arguments
 * @param argv Array of command-line argument strings
 * @return 0 on success, 1 on error or invalid usage
 */
int main(int argc, char *argv[])
{
  char fln[1024];

  if (argc != 2) {
    musrStep_syntax();
    return 1;
  } else {
    if (!strcmp(argv[1], "--version") || (!strcmp(argv[1], "-v"))) {
#ifdef HAVE_GIT_REV_H
      std::cout << std::endl << "musrStep - git-branch: " << GIT_BRANCH << ", git-rev: " << GIT_CURRENT_SHA1 << std::endl << std::endl;
#else
      std::cout << std::endl << "musrStep - git-branch: unknown, git-rev: unknown" << std::endl << std::endl;
#endif
      return 0;
    } else if (!strcmp(argv[1], "--help") || (!strcmp(argv[1], "-h"))) {
      musrStep_syntax();
      return 0;
    } else {
      strncpy(fln, argv[1], sizeof(fln));
    }
  }

  Q_INIT_RESOURCE(musrStep);

  QApplication app(argc, argv);

  PMusrStep musrStep(fln);
  if (!musrStep.isValid())
    return 1;

  musrStep.show();

  app.exec();

  int result = musrStep.result();

  return result;
}