#pragma once

#include "assets/components/point_cloud_vertex_components.hpp"
#include "shader_program/capabilities/point_cloud_capabilities.hpp"

#include <array>

namespace rendering::requirements::point_cloud
{

struct type
{
	shader_program::capabilities::point_cloud::indices::type shader_program_requirement_index{};
	components::point_cloud_vertex::flags vertex_requirements{
		components::point_cloud_vertex::flags::none
	};
};


enum class flags : int
{
	none = 0,
	position = 1 << 0,
	vertex_color = 1 << 1,
	uniform_color = 1 << 2,
	normal = 1 << 3,
	reflectance = 1 << 4,
	rainbow = 1 << 5
};


constexpr inline auto position = type{
	.shader_program_requirement_index = shader_program::capabilities::point_cloud::indices::position,
   .vertex_requirements = components::point_cloud_vertex::flags::position
};

constexpr inline auto rainbow = type{
	.shader_program_requirement_index = shader_program::capabilities::point_cloud::indices::rainbow
};

constexpr inline auto vertex_color = type{
	.shader_program_requirement_index = shader_program::capabilities::point_cloud::indices::vertex_color,
   .vertex_requirements = components::point_cloud_vertex::flags::color
};

constexpr inline auto uniform_color = type{
	.shader_program_requirement_index = shader_program::capabilities::point_cloud::indices::uniform_color
};

constexpr inline auto normal = type{
	.shader_program_requirement_index = shader_program::capabilities::point_cloud::indices::normal,
	.vertex_requirements = components::point_cloud_vertex::flags::normal
};

constexpr inline auto reflectance = type{
	.shader_program_requirement_index = shader_program::capabilities::point_cloud::indices::reflectance,
   .vertex_requirements = components::point_cloud_vertex::flags::reflectance
};

constexpr inline auto all = std::array{
	position, vertex_color, uniform_color, normal, reflectance, rainbow
};
}


[[nodiscard]] constexpr rendering::requirements::point_cloud::flags operator|(
	const rendering::requirements::point_cloud::flags& a, const rendering::requirements::point_cloud::flags& b
) {
	return static_cast<rendering::requirements::point_cloud::flags>(static_cast<int>(a) | static_cast<int>(b));
}

[[nodiscard]] constexpr rendering::requirements::point_cloud::flags operator&(
	const rendering::requirements::point_cloud::flags& a, const rendering::requirements::point_cloud::flags& b
) {
	return static_cast<rendering::requirements::point_cloud::flags>(static_cast<int>(a) & static_cast<int>(b));
}

[[nodiscard]] constexpr rendering::requirements::point_cloud::flags operator^(
	const rendering::requirements::point_cloud::flags& a, const rendering::requirements::point_cloud::flags& b
) {
	return static_cast<rendering::requirements::point_cloud::flags>(static_cast<int>(a) ^ static_cast<int>(b));
}

[[nodiscard]] constexpr rendering::requirements::point_cloud::flags operator~(const rendering::requirements::point_cloud::flags& a) {
	return static_cast<rendering::requirements::point_cloud::flags>(~static_cast<int>(a));
}

constexpr rendering::requirements::point_cloud::flags& operator|=(rendering::requirements::point_cloud::flags& a, const rendering::requirements::point_cloud::flags& b) {
	return a = a | b;
}

constexpr rendering::requirements::point_cloud::flags& operator&=(rendering::requirements::point_cloud::flags& a, const rendering::requirements::point_cloud::flags& b) {
	return a = a & b;
}

constexpr rendering::requirements::point_cloud::flags& operator^=(rendering::requirements::point_cloud::flags& a, const rendering::requirements::point_cloud::flags& b) {
	return a = a ^ b;
}

[[nodiscard]] constexpr bool operator<(
	rendering::requirements::point_cloud::flags lhs, rendering::requirements::point_cloud::flags rhs
) {
	return static_cast<int>(lhs) < static_cast<int>(rhs);
}

[[nodiscard]] constexpr bool operator<=(
	rendering::requirements::point_cloud::flags lhs, rendering::requirements::point_cloud::flags rhs
) {
	return static_cast<int>(lhs) <= static_cast<int>(rhs);
}

[[nodiscard]] constexpr bool operator>(
	rendering::requirements::point_cloud::flags lhs, rendering::requirements::point_cloud::flags rhs
) {
	return static_cast<int>(lhs) > static_cast<int>(rhs);
}

[[nodiscard]] constexpr bool operator>=(
	rendering::requirements::point_cloud::flags lhs, rendering::requirements::point_cloud::flags rhs
) {
	return static_cast<int>(lhs) >= static_cast<int>(rhs);
}