#pragma once

#include <cstddef>
#include <memory>

// NOLINTNEXTLINE(cppcoreguidelines-special-member-functions)
class IUserInputObserver
{
public:
	using Key = char;

	virtual ~IUserInputObserver() noexcept = default;

	virtual void listen() noexcept = 0;

	virtual bool is_key_pressed(Key key) noexcept = 0;

	virtual Key get_currently_pressed_key() const noexcept = 0;

	virtual void clear_currently_pressed() noexcept = 0;
};