#pragma once

#include <filesystem>
#include <vector>
#include <span>

#include "assets/dynamic_data_store.hpp"
#include "assets/components/point_cloud_vertex_components.hpp"
#include "assets/data/point_cloud_data.hpp"
#include "assets/data_stores/point_cloud_store.hpp"
#include "assets/prefetch_lookup.hpp"
#include "assets/prefetch_queue.hpp"
#include "glm/mat4x4.hpp"
#include "util/result.hpp"

namespace assets
{

struct kitti_loader
{
	static constexpr auto name = std::string_view("kitti");

	[[nodiscard]] static std::error_code prefetch(
		const file_dir_list& paths,
		prefetch_queue& queue
	);

	[[nodiscard]] static std::error_code load(
		point_cloud_data& buffer,
		const file_dir_list& paths,
		prefetch_lookup& id_lookup,
		shader_source_store& store,
		bool pedantic = false
	);

private:
	inline static constexpr auto frame_folder = "frames";

	[[nodiscard]] static ztu::result<std::size_t> frame_id_from_filename(
		std::string_view filename
	);

	[[nodiscard]] static std::error_code load_point_file(
		const std::filesystem::path& filename,
		dynamic_point_cloud_buffer& point_cloud
	);

	static void transform_point_cloud(
		std::span<point_cloud_vertex_components::position> points,
		const glm::mat4& pose
	);

	[[nodiscard]] static ztu::result<std::string_view> parent_directory(std::string_view path);


};

}