from enum import Enum


class GameMode(Enum):
    MENU = "MENU"
    PLAN = "PLAN"
    BATTLE = "BATTLE"
    END = "END"

    @staticmethod
    def from_string(raw_value):
        if raw_value:
            value = raw_value.upper()
            if value in GameMode.__members__:
                return GameMode[value]
        return GameMode.MENU