#ifndef ANALOG_INPUT_HH

#define ANALOG_INPUT_HH

// A 'AnalogInput' represents an input with an associated analog value

//

// Some examples:

// * Joystick axis motion, the corresponding analog value can vary between -32768..32767

// * Relative mouse motion, separate for X and Y axis.

#include "Event.hh"

#include "JoystickId.hh"

#include "function_ref.hh"

#include <SDL.h>

#include <cstdint>

#include <optional>

#include <string>

#include <string_view>

#include <variant>

namespace openmsx {

class AnalogMouseAxis

{

public:

	// 0 = X-axis, 1 = Y-axis

	explicit AnalogMouseAxis(uint8_t axis_)

		: axis(axis_) {}

	[[nodiscard]] auto getAxis() const { return axis; }

private:

	uint8_t axis;

};

class AnalogJoystickAxis

{

public:

	explicit AnalogJoystickAxis(JoystickId joystick_, uint8_t axis_)

		: joystick(joystick_), axis(axis_) {}

	[[nodiscard]] auto getJoystick() const { return joystick; }

	[[nodiscard]] auto getAxis() const { return axis; }

private:

	JoystickId joystick;

	uint8_t axis;

};

using AnalogInput = std::variant<

	AnalogMouseAxis,

	AnalogJoystickAxis>;

[[nodiscard]] std::string toString(const AnalogInput& input);

[[nodiscard]] std::optional<AnalogInput> parseAnalogInput(std::string_view text);

[[nodiscard]] std::optional<AnalogInput> captureAnalogInput(const Event& event, function_ref<int(JoystickId)> getJoyDeadThreshold);

[[nodiscard]] bool operator==(const AnalogInput& x, const AnalogInput& y);

[[nodiscard]] std::optional<float> match(

	const AnalogInput& binding, const Event& event,

	function_ref<float(JoystickId, const JoystickAxisMotionEvent&)> getJoyValue);

} // namespace openmsx

#endif