// SPDX-FileCopyrightText: 2013, 2015 ljfa-ag <ljfa-ag@web.de>
//
// SPDX-License-Identifier: LGPL-3.0-or-later

/*
 * libnbt++ - A library for the Minecraft Named Binary Tag format.
 * Copyright (C) 2013, 2015  ljfa-ag
 *
 * This file is part of libnbt++.
 *
 * libnbt++ is free software: 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 3 of the License, or
 * (at your option) any later version.
 *
 * libnbt++ 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with libnbt++.  If not, see <http://www.gnu.org/licenses/>.
 */
#include "tag_compound.h"
#include "io/stream_reader.h"
#include "io/stream_writer.h"
#include <istream>
#include <sstream>

namespace nbt
{

	tag_compound::tag_compound(
		std::initializer_list<std::pair<std::string, value_initializer>> init)
	{
		for (const auto& pair : init)
			tags.emplace(std::move(pair.first), std::move(pair.second));
	}

	value& tag_compound::at(const std::string& key)
	{
		return tags.at(key);
	}

	const value& tag_compound::at(const std::string& key) const
	{
		return tags.at(key);
	}

	std::pair<tag_compound::iterator, bool>
	tag_compound::put(const std::string& key, value_initializer&& val)
	{
		auto it = tags.find(key);
		if (it != tags.end()) {
			it->second = std::move(val);
			return {it, false};
		} else {
			return tags.emplace(key, std::move(val));
		}
	}

	std::pair<tag_compound::iterator, bool>
	tag_compound::insert(const std::string& key, value_initializer&& val)
	{
		return tags.emplace(key, std::move(val));
	}

	bool tag_compound::erase(const std::string& key)
	{
		return tags.erase(key) != 0;
	}

	bool tag_compound::has_key(const std::string& key) const
	{
		return tags.find(key) != tags.end();
	}

	bool tag_compound::has_key(const std::string& key, tag_type tt) const
	{
		auto it = tags.find(key);
		return it != tags.end() && it->second.get_type() == tt;
	}

	void tag_compound::read_payload(io::stream_reader& reader)
	{
		clear();
		tag_type tt;
		while ((tt = reader.read_type(true)) != tag_type::End) {
			std::string key;
			try {
				key = reader.read_string();
			} catch (io::input_error&) {
				std::ostringstream str;
				str << "Error reading key of tag_" << tt;
				throw io::input_error(str.str());
			}
			auto tptr = reader.read_payload(tt);
			tags.emplace(std::move(key), value(std::move(tptr)));
		}
	}

	void tag_compound::write_payload(io::stream_writer& writer) const
	{
		for (const auto& pair : tags)
			writer.write_tag(pair.first, pair.second);
		writer.write_type(tag_type::End);
	}

} // namespace nbt
