#pragma once

#include <filesystem>

#include "assets/data_stores.hpp"
#include "assets/path_id_lookups.hpp"
#include "assets/data/pose_data.hpp"
#include "util/result.hpp"

namespace assets
{

struct threedtk_pose_loader
{
	static constexpr auto name = std::string_view("3dtk_pose");
	using data_type = pose_list_data;
	using store_type = pose_list_store;
	using lookup_type = pose_list_id_lookup;

	[[nodiscard]] std::error_code prefetch(
		path_id_lookups& lookups
	);

	[[nodiscard]] std::error_code load(
		path_id_lookups& lookups,
		data_stores& stores,
		bool pedantic = false
	);

protected:
	class parser_context
	{
	public:
		parser_context(
			path_id_lookups& pose_list_lookup,
			data_stores& stores
		);

		void operator()(lookup_type::const_pointer entry) noexcept;

	private:
		path_id_lookups* m_id_lookups;
		data_stores* m_stores;
		data_type m_pose{};
		std::string m_line_buffer{};
	};

	static ztu::result<pose_data> parse_file(
		const std::filesystem::path& filename,
		std::string& line_buffer
	);

private:
	std::vector<lookup_type::const_pointer> m_path_buffer;
};

}