/*******************************************************************************
   This file is part of LibTMCG.

 Copyright (C) 2004, 2005, 2006,
               2016, 2017, 2018  Heiko Stamer <HeikoStamer@gmx.net>

   LibTMCG 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.

   LibTMCG 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 LibTMCG; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*******************************************************************************/

// include headers
#ifdef HAVE_CONFIG_H
	#include "libTMCG_config.h"
#endif
#include "VTMF_CardSecret.hh"

// additional headers
#include "mpz_helper.hh"
#include "parse_helper.hh"

VTMF_CardSecret::VTMF_CardSecret
	()
{
	mpz_init(r);
}

VTMF_CardSecret::VTMF_CardSecret
	(const VTMF_CardSecret& that)
{
	mpz_init_set(r, that.r);
}

VTMF_CardSecret& VTMF_CardSecret::operator =
	(const VTMF_CardSecret& that)
{
	mpz_set(r, that.r);
	return *this;
}

bool VTMF_CardSecret::import
	(std::string s)
{
	try
	{
		// check magic
		if (!TMCG_ParseHelper::cm(s, "crs", '|'))
			throw false;
		
		// secret card data
		std::string mpz_str;
		if (!TMCG_ParseHelper::gs(s, '|', mpz_str))
			throw false;
		if ((mpz_set_str(r, mpz_str.c_str(), TMCG_MPZ_IO_BASE) < 0) ||
			!TMCG_ParseHelper::nx(s, '|'))
		{
			throw false;
		}
		
		// finish
		throw true;
	}
	catch (bool return_value)
	{
		return return_value;
	}
}

VTMF_CardSecret::~VTMF_CardSecret
	()
{
	mpz_clear(r);
}

std::ostream& operator <<
	(std::ostream& out, const VTMF_CardSecret& cardsecret)
{
	return out << "crs|" << cardsecret.r << "|";
}

std::istream& operator >>
	(std::istream& in, VTMF_CardSecret& cardsecret)
{
	char *tmp = new char[TMCG_MAX_CARD_CHARS];
	in.getline(tmp, TMCG_MAX_CARD_CHARS);
	if (!cardsecret.import(std::string(tmp)))
	{
		mpz_set_ui(cardsecret.r, 0L);
		in.setstate(std::istream::iostate(std::istream::failbit));
	}
	delete [] tmp;
	return in;
}