import time


class Cat:
    def __init__(self, name, traits, fullness=100, last_updated=None):
        self.name = name
        self.traits = traits
        self.fullness = fullness
        self.last_updated = last_updated if last_updated is not None else time.time()

    def to_dict(self):
        return {
            "name": self.name,
            "traits": self.traits,
            "fullness": self.fullness,
            "last_updated": self.last_updated,
        }

    @staticmethod
    def from_dict(data):
        return Cat(data["name"], data["traits"], data["fullness"], data["last_updated"])


class Save:
    def __init__(self, version, cat: Cat):
        self.version = version
        self.cat = cat

    def to_dict(self):
        return {"version": self.version, "cat": self.cat.to_dict()}

    @staticmethod
    def from_dict(data):
        return Save(data["version"], Cat.from_dict(data["cat"]))