/********************************************************
 *  ██████╗  ██████╗████████╗██╗
 * ██╔════╝ ██╔════╝╚══██╔══╝██║
 * ██║  ███╗██║        ██║   ██║
 * ██║   ██║██║        ██║   ██║
 * ╚██████╔╝╚██████╗   ██║   ███████╗
 *  ╚═════╝  ╚═════╝   ╚═╝   ╚══════╝
 * Geophysical Computational Tools & Library (GCTL)
 *
 * Copyright (c) 2022  Yi Zhang (yizhang-geo@zju.edu.cn)
 *
 * GCTL is distributed under a dual licensing scheme. You can redistribute 
 * it and/or modify it under the terms of the GNU Lesser General Public 
 * License as published by the Free Software Foundation, either version 2 
 * of the License, or (at your option) any later version. You should have 
 * received a copy of the GNU Lesser General Public License along with this 
 * program. If not, see <http://www.gnu.org/licenses/>.
 * 
 * If the terms and conditions of the LGPL v.2. would prevent you from using 
 * the GCTL, please consider the option to obtain a commercial license for a 
 * fee. These licenses are offered by the GCTL's original author. As a rule, 
 * licenses are provided "as-is", unlimited in time for a one time fee. Please 
 * send corresponding requests to: yizhang-geo@zju.edu.cn. Please do not forget 
 * to include some description of your company and the realm of its activities. 
 * Also add information on how to contact you by electronic and paper mail.
 ******************************************************/

#include "func_msh2vtk.h"

int main(int argc, char* argv[])
{
	const char* pro_name = "gmsh2vtk";
	const char* pro_info = "1.0 - Convert Gmsh(.msh) file to Paraview(.vtk) file. \
		This program is a toolkit of the GCTL package. The GCTL comes with ABSOLUTE NO WARRANTY. \
		Please see instructions or contact the author for more information.";
	const char* data_name_str = "Name of the model data that needs to be converted. The names should be rounded by quotations. \
		Supported elements types are 2-node line, 3-node triangle, 4-node quadrangle,  4-node tetrahedron, \
		6-node prism and 8-node hexahedron. Blank data entries will be filled with a dummy value 1e+30.";

	mshvtk mv;
	string mshname = "NULL", dataname = "NULL";

	static struct gctl::option_info long_opts_help[] = 
	{
		{"Input Gmsh(.msh) file.", "<msh-file>", true},
		{data_name_str, "<data-name> [-d<data-name> ...]", true},
		{"Show help information.", 0, false},
		{0, 0, 0}
	};

	static struct option long_opts[] = 
	{
		{"input-file", required_argument, NULL, 'i'},
		{"data-name", required_argument, NULL, 'd'},
		{"help", no_argument, NULL, 'h'},
		{0, 0, 0, 0}
	};

	if (argc == 1){
		gctl::display_logo(std::clog);
		gctl::getopt_long_help(long_opts, long_opts_help, pro_name, pro_info);
		return 0;
	}

	int curr;
	while(1)
	{
		int optIndex = 0;

		curr = getopt_long(argc, argv, "hi:d:", long_opts, &optIndex);

		if (curr == -1) break;

		switch (curr)
		{
			case 'h': //显示帮助信息
				gctl::display_logo(std::clog);
				gctl::getopt_long_help(long_opts, long_opts_help, pro_name, pro_info);
				return 0;
			case 'i':
				mshname = optarg;
				break;
			case 'd':
				dataname = optarg;
				mv.addname(dataname);
				break;
			case '?':
				gctl::getopt_long_help(long_opts, long_opts_help, pro_name, " - Unknown options. Please see the help information below.");
				break;
			default:
				abort();
		}
	}

	// check for mandatory option(s)
	if (mshname == "NULL" || dataname == "NULL")
	{
		GCTL_ShowWhatError("Missing arguments for mandatory option(s).", GCTL_ERROR_ERROR, 
			0, "See tips below. Or use -h option to see the full instruction.", 0);
		if (mshname == "NULL")
			gctl::getopt_long_option_info('i', long_opts, long_opts_help);
		if (dataname == "NULL")
			gctl::getopt_long_option_info('d', long_opts, long_opts_help);
		return 0;
	}

	mv.runtine(mshname);
	return 0;
}