from enum import Enum, auto
from typing import Any


class Menu:
    values: list

    def __init__(self):
        self.position = 0

    def go_up(self) -> None:
        self.position = max(0, self.position - 1)

    def go_down(self) -> None:
        self.position = min(len(self.values) - 1, self.position + 1)

    def validate(self) -> Any:
        return self.values[self.position]


class MainMenuValues(Enum):
    START = auto()
    SETTINGS = auto()
    EXIT = auto()


class MainMenu(Menu):
    values = [e for e in MainMenuValues]


class ArbitraryMenu:
    def __init__(self, values: list):
        super().__init__(self)
        self.values = values