#pragma once

#include <fmt/core.h>

#define FSM_EV(S, F) case S: F(); break
#define FSM_STATE(S, F, E) case S: fmt::println(">>> " #S ":" #F ":{}", int(E)); F(E); break

template<typename S, typename E>
class DeadSimpleFSM {
protected:
  S _state = S::START;

public:
  virtual void event(E event) = 0;

  void state(S next_state) {
    _state = next_state;
  }

  bool in_state(S state) {
    return _state == state;
  }
};