/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

#pragma once

#include "Math.hpp"
#include <optional>
#include <magic_enum/magic_enum.hpp>

namespace OpenVulkano::Math
{
	class CoordinateSystem final
	{
	public:
		enum System: uint8_t
		{
			RIGHT_HANDED_Y_UP = 0,
			RIGHT_HANDED_Z_UP,
			LEFT_HANDED_Y_UP,
			LEFT_HANDED_Z_UP
		};
		
		enum class Handedness: uint8_t { Right = 0, Left };
		
		enum class UpAxis: uint8_t { Y, Z };

		constexpr CoordinateSystem(System system = RIGHT_HANDED_Y_UP): m_system(system) {}

		constexpr CoordinateSystem(Handedness handedness, UpAxis up): m_system(static_cast<System>(static_cast<uint8_t>(handedness) << 1 | static_cast<uint8_t>(up))) {}
		
		[[nodiscard]] constexpr std::string_view GetName() const
		{
			return magic_enum::enum_name(m_system);
		}

		[[nodiscard]] constexpr static std::optional<CoordinateSystem> GetFromName(std::string_view name)
		{
			auto result = magic_enum::enum_cast<System>(name);
			if (result.has_value()) return CoordinateSystem(result.value());
			return {};
		}

		[[nodiscard]] constexpr Handedness GetHandedness() const { return static_cast<Handedness>(m_system >> 1); }

		[[nodiscard]] constexpr UpAxis GetUpAxis() const { return static_cast<UpAxis>(m_system & 1); }

		[[nodiscard]] constexpr operator System() const { return m_system; }

		[[nodiscard]] constexpr operator Handedness() const { return GetHandedness(); }

		[[nodiscard]] constexpr operator UpAxis() const { return GetUpAxis(); }

		[[nodiscard]] constexpr auto operator <=>(const CoordinateSystem& other) const { return m_system <=> other.m_system; }
		[[nodiscard]] constexpr auto operator <=>(const System& other) const { return m_system <=> other; }

		[[nodiscard]] constexpr bool operator ==(const CoordinateSystem& other) const { return m_system == other.m_system; }
		[[nodiscard]] constexpr bool operator ==(const System& other) const { return m_system == other; }

	private:
		System m_system;
	};
}