/**
 * \file
 * \copyright
 * Copyright (c) 2012-2021, OpenGeoSys Community (http://www.opengeosys.org)
 *            Distributed under a Modified BSD License.
 *              See accompanying file LICENSE.txt or
 *              http://www.opengeosys.org/project/license
 */

// STL
#include <memory>
#include <string>
#include <vector>

#include <tclap/CmdLine.h>

// BaseLib
#include "InfoLib/GitInfo.h"
#include "BaseLib/FileTools.h"

// GeoLib
#include "GeoLib/Point.h"
#include "GeoLib/Surface.h"
#include "GeoLib/PointVec.h"
#include "GeoLib/IO/TINInterface.h"

#include "MeshLib/IO/VtkIO/VtuInterface.h"

// MeshLib
#include "MeshLib/Mesh.h"
#include "MeshLib/convertMeshToGeo.h"


int main (int argc, char* argv[])
{
    TCLAP::CmdLine cmd(
        "Converts TIN file into VTU file.\n\n"
        "OpenGeoSys-6 software, version " +
            GitInfoLib::GitInfo::ogs_version +
            ".\n"
            "Copyright (c) 2012-2021, OpenGeoSys Community "
            "(http://www.opengeosys.org)",
        ' ', GitInfoLib::GitInfo::ogs_version);
    TCLAP::ValueArg<std::string> inArg("i", "input-tin-file",
                                         "the name of the file containing the input TIN", true,
                                         "", "string");
    cmd.add(inArg);
    TCLAP::ValueArg<std::string> outArg("o", "output-vtu-file",
                                          "the name of the file the mesh will be written to", true,
                                          "", "string");
    cmd.add(outArg);
    cmd.parse(argc, argv);

    INFO("reading the TIN file...");
    const std::string tinFileName(inArg.getValue());
    GeoLib::PointVec point_vec("SurfacePoints",
                               std::make_unique<std::vector<GeoLib::Point*>>());
    std::unique_ptr<GeoLib::Surface> sfc(
        GeoLib::IO::TINInterface::readTIN(tinFileName, point_vec));
    if (!sfc)
    {
        return EXIT_FAILURE;
    }
    INFO("TIN read:  {:d} points, {:d} triangles", point_vec.size(),
         sfc->getNumberOfTriangles());

    INFO("converting to mesh data");
    std::unique_ptr<MeshLib::Mesh> mesh(MeshLib::convertSurfaceToMesh(*sfc, BaseLib::extractBaseNameWithoutExtension(tinFileName), std::numeric_limits<double>::epsilon()));
    INFO("Mesh created: {:d} nodes, {:d} elements.", mesh->getNumberOfNodes(),
         mesh->getNumberOfElements());

    INFO("Write it into VTU");
    MeshLib::IO::VtuInterface writer(mesh.get());
    writer.writeToFile(outArg.getValue());

    return EXIT_SUCCESS;
}