import { BrowserQRCodeReader, NotFoundException } from "@zxing/library";

export interface PairingQrScannerHandle {
  stop(): void;
}

export async function startPairingQrScanner(
  video: HTMLVideoElement,
  onScan: (value: string) => void,
  onError: (error: Error) => void,
): Promise<PairingQrScannerHandle> {
  const reader = new BrowserQRCodeReader();
  await reader.decodeFromVideoDevice(null, video, (result, error) => {
    if (result) {
      onScan(result.getText());
      return;
    }
    if (error && !(error instanceof NotFoundException)) onError(error);
  });
  return { stop: () => reader.reset() };
}