/* Copyright 2025, Michele "King_DuckZ" Santullo
 * This file is part of ducktorrent.
 *
 * Ducktorrent 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.
 *
 * Ducktorrent 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 ducktorrent.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

//This file contains higher level helpers that build on top of the parser and
//the visitors in parser.hpp and visitors/find_t_visitor.hpp. It is just here
//for convenience and it is not strictly required to read and parse bencoded
//data.

#include <vector>
#include <string>
#include <string_view>
#include <filesystem>
#include <ostream>
#include <cstddef>
#include <cstdint>
#include <array>

namespace duck {
struct TorrentValue;

class TorrentRead {
public:
	TorrentRead (std::string_view torrent_path, std::filesystem::path workdir);
	TorrentRead (const TorrentRead&) = delete;
	~TorrentRead() noexcept;

	void print (std::ostream& out) const;
	std::size_t raw_data_size() const;
	const std::vector<TorrentValue>& parsed_values() const;

	std::string_view read_name() const;
	std::size_t read_piece_length() const;
	std::int_fast32_t read_file_count() const;
	std::vector<std::string_view> read_file_path(std::size_t index) const;
	std::string read_joint_file_path(std::size_t index, char sep) const;
	std::size_t read_file_size(std::size_t index) const;
	bool read_is_private() const;
	std::string_view read_comment() const;
	std::string_view read_hashes() const;
	std::string_view read_created_by() const;
	std::string_view read_announce() const;
	std::time_t read_creation_date() const;

private:
	const TorrentValue& cached_info_files() const;

	std::filesystem::path m_workdir;
	std::filesystem::path m_torrent_path;
	std::string m_raw_torrent;
	std::vector<TorrentValue> m_parsed_values;

	mutable const TorrentValue* m_cached_info_files;
};

std::vector<std::array<std::uint32_t, 5>> group_torrent_hashes (std::string_view hashes);
std::vector<std::array<std::uint32_t, 5>> group_torrent_hashes (const TorrentRead& torrent);
} //namespace duck