getPendingCheckoutId method

@override Future<InappifySdkResult<String>> getPendingCheckoutId()

Returns the non-secret checkout id retained for a browser redirect.

A successful result may contain null when no checkout is pending. Session credentials and payment status must never be returned by this method.

Implementation

@override
Future<InappifySdkResult<String>> getPendingCheckoutId() {
  return _invokeResult<String>(
    method: InappifyChannelContract.getPendingCheckoutId,
    payload: const <String, Object?>{},
    decodeData: (data) {
      final value = data['checkoutId'];
      if (value is String && value.isNotEmpty) return value;
      throw const FormatException(
        'Pending checkout response must contain checkoutId.',
      );
    },
    allowMissingData: true,
  );
}