class DataSaver:
    def __init__(self, database_save_path):
        self.database_save_path = database_save_path
        self.db = SqliteDatabase(database_save_path)
        db.connect()
        db.create_tables([User, Chat, Message], True)

    class BaseModel(Model):
        class Meta:
            database = self.db

    class User(BaseModel):
        name = CharField(unique=True)

    class Chat(BaseModel):
        name = CharField(unique=True)