/*	tigersum - a command line utility to calculate the tiger hash from input.
	Copyright (C) 2014  Michele "King_DuckZ" Santullo

	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 3 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, see <http://www.gnu.org/licenses/>.
*/

import std.stdio;
import std.file;
import tiger;
import std.array;
import std.getopt;

mixin(import("tigersumConfig.d"));

void main (string[] parArgs) {
	const auto cwd = getcwd();
	const auto working_dir = cwd ~ (cwd[$-1] == '/' ? "" : "/");

	bool show_version, show_help, show_license;
	bool check_mode;
	ushort tiger_version = TIGER_VERSION_DEF;

	getopt(parArgs,
		"version|v", &show_version,
		"help|h", &show_help,
		"check|c", &check_mode,
		"tiger|t", &tiger_version,
		"licence|license", &show_license
	);

	if (check_mode) {
	}
	else if (show_help) {
		writefln("Usage: %s [OPTION]... [FILE]...", PROGRAM_NAME);
		writeln("  -c,   --check         Read tiger sums from FILE and check them.");
		writeln("  -h,   --help          Show this help.");
		writeln("  -v,   --version       Show version info and quit.");
		writefln("  -t n, --tiger=n       Set the tiger version that should be used. Valid values are 1 or 2, %d is default.", TIGER_VERSION_DEF);
		writefln("        --license       Show details about the license under which %s is distributed.", PROGRAM_NAME);
	}
	else if (show_version) {
		writefln("%s %d.%d Copyright © %d  Michele \"King_DuckZ\" Santullo", PROGRAM_NAME, TIGERSUM_VERSION_MAJOR, TIGERSUM_VERSION_MINOR, COPYRIGHT_YEAR);
		writeln("Using the reference tiger implementation by Ross Anderson and Eli Biham");
		writeln("http://www.cs.technion.ac.il/~biham/Reports/Tiger/");
		writeln();
		writeln("This program comes with ABSOLUTELY NO WARRANTY.");
		writeln("This is free software, and you are welcome to redistribute it");
		writefln("under certain conditions; run %s --license for details.", PROGRAM_NAME);
	}
	else if (show_license) {
		writefln("%s - a command line utility to calculate the tiger hash from input.", PROGRAM_NAME);
		writefln("Copyright © %d  Michele \"King_DuckZ\" Santullo", COPYRIGHT_YEAR);
		writeln();
		writefln("%s is free software: you can redistribute it and/or modify", PROGRAM_NAME);
		writeln("it under the terms of the GNU General Public License as published by");
		writeln("the Free Software Foundation, either version 3 of the License, or");
		writeln("(at your option) any later version.");
		writeln();
		writefln("%s is distributed in the hope that it will be useful,", PROGRAM_NAME);
		writeln("but WITHOUT ANY WARRANTY; without even the implied warranty of");
		writeln("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the");
		writeln("GNU General Public License for more details.");
		writeln();
		writeln("You should have received a copy of the GNU General Public License");
		writeln("along with this program.  If not, see <http://www.gnu.org/licenses/>.");
	}
	else {
		//regular mode
	}

	//foreach (arg; parArgs[1 .. $]) {
	//	const auto curr_path = working_dir ~ arg;
	//	File curr_file = File(curr_path, "rb");
	//	if (!isDir(curr_path)) {
	//		writefln("%s  %s", tigerToString(getTiger(curr_file, true)), arg);
	//	}
	//	else {
	//		writefln("tigersum: %s: is a directory", arg);
	//	}
	//}
}