from typing import Callable
from types import FrameType
import signal


class MainApp:

    def __init__(self, main: Callable[[str], None], xml: str) -> None:
        self.shutdown = False
        self.main = main
        self.xml = xml
        signal.signal(signal.SIGINT, self.signal_handler)  # type: ignore
        signal.signal(signal.SIGTERM, self.signal_handler)  # type: ignore

    def signal_handler(self, signal: int, _: FrameType) -> None:
        raise SystemError(signal)

    def run(self) -> None:
        self.main(self.xml)