#ifndef JOYSTICK_ID_HH

#define JOYSTICK_ID_HH

#include "StringOp.hh"

#include "strCat.hh"

#include <optional>

#include <string_view>

namespace openmsx {

// openMSX specific joystick numbering,

//  different from SDL joystick device index and

//  different from SDL joystick instance ID.

class JoystickId {

public:

	static constexpr std::string_view PREFIX = "joy";

	explicit JoystickId(unsigned id_) : id(id_) {}

	[[nodiscard]] unsigned raw() const { return id; }

	[[nodiscard]] bool operator==(const JoystickId&) const = default;

	[[nodiscard]] std::string str() const { return strCat(PREFIX, id + 1); }

	[[nodiscard]] static std::optional<JoystickId> parse(std::string_view str) {

		if (!str.starts_with(PREFIX)) return std::nullopt;

		str.remove_prefix(PREFIX.size());

		auto n = StringOp::stringToBase<10, unsigned>(str);

		if (!n || *n == 0) return std::nullopt;

		return JoystickId(*n - 1);

	}

private:

	unsigned id;

};

} // namespace openmsx

#endif