#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 auto is_key_pressed(Key key) noexcept -> bool = 0;

	[[nodiscard]] virtual auto get_currently_pressed_key() const noexcept -> Key = 0;

	virtual void clear_currently_pressed() noexcept = 0;
};