#pragma once

#include "util/uix.hpp"

#include <span>
#include <system_error>
#include "GL/glew.h"
#include "opengl/handles/point_cloud_handle.hpp"
#include "assets/components/point_cloud_vertex_components.hpp"


namespace zgl {
struct point_cloud_data {
private:
	point_cloud_data(
		GLuint vertex_buffer_id,
		GLuint vao_id,
		GLsizei point_count
	);

public:
	point_cloud_data() = default;

	[[nodiscard]] static std::error_code build_from(
		std::span<const std::uint8_t> point_buffer,
		std::span<const GLenum> component_types,
		std::span<const GLint> component_lengths,
		GLsizei stride,
		point_cloud_data& data
	);

	point_cloud_data(const point_cloud_data& other) = delete;
	point_cloud_data& operator=(const point_cloud_data& other) = delete;

	point_cloud_data(point_cloud_data&& other) noexcept;
	point_cloud_data& operator=(point_cloud_data&& other) noexcept;

	~point_cloud_data();

	[[nodiscard]] point_cloud_handle handle() const;

	[[nodiscard]] assets::point_cloud_vertex_components::flags components() const;

private:
	point_cloud_handle m_handle{};
	GLuint m_vertex_vbo_id{ 0 };
	point_cloud_vertex_components::flags m_component_types{
		point_cloud_vertex_components::flags::none
	};
};
}

#define INCLUDE_POINT_CLOUD_DATA_IMPLEMENTATION
#include "opengl/data/point_cloud_data.ipp"
#undef INCLUDE_POINT_CLOUD_DATA_IMPLEMENTATION