#ifndef JOYSTICK_MANAGER_HH

#define JOYSTICK_MANAGER_HH

#include "InfoTopic.hh"

#include "JoystickId.hh"

#include <cstdint>

#include <memory>

#include <optional>

#include <vector>

#include <SDL.h>

namespace openmsx {

class CommandController;

class JoystickAxisMotionEvent;

class FloatSetting;

class Reactor;

class JoystickManager {

public:

	struct Info {

		SDL_Joystick* joystick = nullptr;

		int instanceId = -1;

		std::unique_ptr<FloatSetting> deadZoneSetting;

		std::unique_ptr<FloatSetting> midPointSetting;

		std::unique_ptr<FloatSetting> saturationSetting;

	};

public:

	JoystickManager(const JoystickManager&) = delete;

	JoystickManager(JoystickManager&&) = delete;

	JoystickManager& operator=(const JoystickManager&) = delete;

	JoystickManager& operator=(JoystickManager&&) = delete;

	explicit JoystickManager(Reactor& reactor);

	~JoystickManager();

	// Handle SDL joystick added/removed events

	void add(int deviceIndex);

	void remove(int instanceId);

	// return the range of JoystickId's for which there is a corresponding SDL_Joystick

	[[nodiscard]] std::vector<JoystickId> getConnectedJoysticks() const;

	[[nodiscard]] int getJoyDeadThreshold(JoystickId joyId) const;

	[[nodiscard]] float getJoyValue(JoystickId joyId, const JoystickAxisMotionEvent& e) const;

	[[nodiscard]] Info* getSettings(JoystickId joyId);

	[[nodiscard]] std::string getDisplayName(JoystickId joyId) const;

	[[nodiscard]] std::optional<unsigned> getNumAxes(JoystickId joyId) const;

	[[nodiscard]] std::optional<unsigned> getNumBalls(JoystickId joyId) const;

	[[nodiscard]] std::optional<unsigned> getNumButtons(JoystickId joyId) const;

	[[nodiscard]] std::optional<unsigned> getNumHats(JoystickId joyId) const;

	[[nodiscard]] std::optional<int16_t> getAxis(JoystickId joyId, int axis) const;

	[[nodiscard]] std::optional<JoystickId> translateSdlInstanceId(SDL_Event& evt) const;

private:

	[[nodiscard]] size_t getFreeSlot();

private:

	CommandController& commandController;

	struct JoystickInfo final : InfoTopic {

		explicit JoystickInfo(InfoCommand& openMsxInfoCommand);

		void execute(std::span<const TclObject> tokens,

			     TclObject& result) const override;

		[[nodiscard]] std::string help(std::span<const TclObject> tokens) const override;

	} joystickInfo;

	std::vector<Info> infos;

};

} // namespace openmsx

#endif