/*
  Copyright 2013, 2014, 2015 SINTEF ICT, Applied Mathematics.
  Copyright 2014 Dr. Blatt - HPC-Simulation-Software & Services
  Copyright 2015 IRIS AS
  Copyright 2014 STATOIL ASA.

  This file is part of the Open Porous Media project (OPM).

  OPM 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 3 of the License, or
  (at your option) any later version.

  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <config.h>
#include <opm/simulators/flow/FlowMainEbos.hpp>

#include <opm/common/utility/String.hpp>

#include <opm/simulators/flow/ConvergenceOutputConfiguration.hpp>

#include <opm/simulators/utils/ParallelFileMerger.hpp>

#include <algorithm>
#include <filesystem>
#include <fstream>
#include <string>

namespace Opm {
namespace detail {

void mergeParallelLogFiles(std::string_view output_dir,
                           std::string_view deckFilename,
                           bool enableLoggingFalloutWarning)
{
    namespace fs = ::std::filesystem;
    fs::path output_path(output_dir);
    fs::path deck_filename(deckFilename);
    std::string basename;
    // Strip extension "." and ".DATA"
    std::string extension = uppercase(deck_filename.extension().string());
    if (extension == ".DATA" || extension == ".") {
        basename = uppercase(deck_filename.stem().string());
    } else {
        basename = uppercase(deck_filename.filename().string());
    }
    std::for_each(fs::directory_iterator(output_path),
                  fs::directory_iterator(),
                  detail::ParallelFileMerger(output_path, basename,
                                             enableLoggingFalloutWarning));
}

void handleExtraConvergenceOutput(SimulatorReport& report,
                                  std::string_view option,
                                  std::string_view optionName,
                                  std::string_view output_dir,
                                  std::string_view base_name)
{
    const auto extraConvOutput = ConvergenceOutputConfiguration {
        option, optionName
    };

    if (extraConvOutput.want(ConvergenceOutputConfiguration::Option::Steps)) {
      namespace fs = ::std::filesystem;

      const auto infostep = fs::path{output_dir} / fs::path{base_name}.concat(".INFOSTEP");

      std::ofstream os(infostep);
      report.fullReports(os);
    }
}

} // namespace detail
} // namespace Opm