import { EventEmitter } from "events";

export interface QRScannerListener {
  onScan: (result: string) => void;
  onError: (error: Error) => void;
}

export interface QRScannerService {
  checkPermissions(): Promise<boolean>;
  requestPermissions(): Promise<boolean>;
  isSupported(): Promise<boolean>;
  startScan(): Promise<void>;
  stopScan(): Promise<void>;
  addListener(listener: QRScannerListener): void;
  cleanup(): Promise<void>;
  onStream(callback: (stream: MediaStream | null) => void): void;
}