#pragma once

#include <filesystem>

#include "assets/path_id_lookups.hpp"
#include "assets/data_stores/pose_list_store.hpp"
#include "assets/data/pose_list_data.hpp"


namespace assets
{

struct kitti_pose_parser
{
	static constexpr auto name = std::string_view("kitti_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 parse(
		const path_id_lookups& lookups,
		store_type& store,
		bool pedantic = false
	);

private:
	static constexpr auto pose_filename = std::string_view{ "pose.txt" };

	class parser_context
	{
	public:
		parser_context(store_type& m_store);

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

	protected:
		void reset();

	private:
		store_type* m_store;
		data_type m_buffer{};
	};

	static std::error_code parse_file(
		const std::filesystem::path& filename,
		data_type &poses
	);

	static std::error_code parse_pose(
		std::ifstream& in,
		pose_data& pose
	);

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

}