import { AppState } from "react-native";
import type { AppStateStatus, NativeEventSubscription } from "react-native";

export class AppStateMonitor {
  private subscription: NativeEventSubscription | null = null;

  start(onChange: (status: AppStateStatus) => void): void {
    this.stop();
    this.subscription = AppState.addEventListener("change", onChange);
  }

  stop(): void {
    this.subscription?.remove();
    this.subscription = null;
  }
}