/***************************************************************************
 *   Copyright (C) 2006 by Massimiliano Torromeo                           *
 *   massimiliano.torromeo@gmail.com                                       *
 *                                                                         *
 *   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 2 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include "translator.h"

#include "debug.h"
#include "gmenu2x.h"
#include "utilities.h"

#include <fstream>
#include <iostream>
#include <sstream>
#include <stdarg.h>

using namespace std;

Translator::Translator(const string &lang) {
	_lang = "";
	if (!lang.empty())
		setLang(lang);
}

Translator::~Translator() {}

bool Translator::exists(const string &term) {
	return translations.find(term) != translations.end();
}

void Translator::setLang(const string &lang) {
	translations.clear();

	string line;
	ifstream infile ((GMenu2X::getHome() + "/translations/" + lang).c_str(), ios_base::in);
	if (!infile.is_open())
	  infile.open((string(GMENU2X_SYSTEM_DIR "/translations/") + lang).c_str(), ios_base::in);

	if (infile.is_open()) {
		while (getline(infile, line, '\n')) {
			line = trim(line);
			if (line.empty()) continue;
			if (line[0]=='#') continue;

			string::size_type position = line.find("=");
			translations[ trim(line.substr(0,position)) ] = trim(line.substr(position+1));
		}
		infile.close();
		_lang = lang;
	}
}

string Translator::translate(const string &term,const char *replacestr,...) {
	string result = term;

	if (!_lang.empty()) {
		unordered_map<string, string>::iterator i = translations.find(term);
		if (i != translations.end()) {
			result = i->second;
		}

		else WARNING("Untranslated string: '%s'\n", term.c_str());
	}

	va_list arglist;
	va_start(arglist, replacestr);
	const char *param = replacestr;
	int argnum = 1;
	while (param!=NULL) {
		string id = "";
		stringstream ss; ss << argnum; ss >> id;
		result = strreplace(result,"$"+id,param);

		param = va_arg(arglist,const char*);
		argnum++;
	}
	va_end(arglist);

	return result;
}

string Translator::operator[](const string &term) {
	return translate(term);
}

string Translator::lang() {
	return _lang;
}