from dataclass_my import Datetime
        

def getExpirationDate(year: int, month: int, day: int) -> tuple[int, int, int]:
    """ 订购时长是一个月, 返回 订单结束日期"""
    expiration_year, expiration_month = (year + 1, 1) if month == 12 else (year, month + 1)

    datetime = Datetime(year=expiration_year, month=expiration_month)
    if day > datetime.get_last_day_of_month():
        expiration_day = datetime.get_last_day_of_month()
    else:
        expiration_day = day

    return expiration_year, expiration_month, expiration_day