checkAvailability method

Implementation

@override
Future<Map<String, dynamic>> checkAvailability() async {
  try {
    if (kDebugMode) {
      debugPrint('QuickQR Scanner: Checking device availability');
    }

    final result = await methodChannel.invokeMethod<Map<Object?, Object?>>('checkAvailability');
    final availability = Map<String, dynamic>.from(result ?? {});

    if (kDebugMode) {
      debugPrint('QuickQR Scanner: Device availability result - $availability');
    }

    return availability;
  } on PlatformException catch (e) {
    throw _handlePlatformException(e, 'checkAvailability');
  } catch (e) {
    throw ScannerException(
      ScannerErrorCode.internalError,
      'Failed to check device availability: $e',
    );
  }
}