/*
 * Copyright (C) 2016 Emeric Poupon
 *
 * This file is part of LMS.
 *
 * LMS 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.
 *
 * LMS 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 LMS.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "Config.hpp"

#include "utils/Exception.hpp"
#include "utils/Logger.hpp"

std::unique_ptr<IConfig> createConfig(const std::filesystem::path& p)
{
	return std::make_unique<Config>(p);
}

Config::Config(const std::filesystem::path& p)
{
	try
	{
		_config.readFile(p.string().c_str());
	}
	catch( libconfig::FileIOException& e)
	{
		throw LmsException {"Cannot open config file '" + p.string() + "'"}; 
	}
	catch( libconfig::ParseException& e)
	{
		throw LmsException {"Cannot parse config file '" + p.string() + "', line = " + std::to_string(e.getLine()) + ", error = '" + e.getError() + "'"};
	}
	catch (libconfig::ConfigException& e)
	{
		throw LmsException {"Cannot open config file '" + p.string() + "': " + e.what()};
	}
}

std::string_view
Config::getString(std::string_view setting, std::string_view def)
{
	try {
		return static_cast<const char*>(_config.lookup(std::string {setting}));
	}
	catch (libconfig::ConfigException&)
	{
		return def;
	}
}

std::filesystem::path
Config::getPath(std::string_view setting, const std::filesystem::path& path)
{
	try {
		const char* res {_config.lookup(std::string {setting})};
		return std::filesystem::path {std::string(res)};
	}
	catch (libconfig::ConfigException&)
	{
		return path;
	}
}

unsigned long
Config::getULong(std::string_view setting, unsigned long def)
{
	try {
		return static_cast<unsigned int>(_config.lookup(std::string {setting}));
	}
	catch (libconfig::ConfigException&)
	{
		return def;
	}
}

long
Config::getLong(std::string_view setting, long def)
{
	try {
		return _config.lookup(std::string {setting});
	}
	catch (libconfig::ConfigException&)
	{
		return def;
	}
}

bool
Config::getBool(std::string_view setting, bool def)
{
	try {
		return _config.lookup(std::string {setting});
	}
	catch (libconfig::ConfigException&)
	{
		return def;
	}
}