inquiry static method

Implementation

static EcrInquiry inquiry(Object? payload, {required String operationId}) {
  final Map<Object?, Object?>? map = _asMap(payload);
  if (map == null) {
    return EcrInquiryFailed(
      merchantReference: '',
      failure: EcrMalformed(_notAMap(payload, 'an inquiry')),
    );
  }

  final String reference = _string(map, EcrResultKeys.merchantReference);

  switch (_string(map, EcrResultKeys.outcome)) {
    case EcrOutcomes.found:
      final Map<Object?, Object?>? data =
          _asMap(map[EcrResultKeys.transaction]);
      if (data == null) {
        // The host said "found" and sent nothing to show for it. Reporting a
        // transaction of empty strings would be worse than saying so.
        return EcrInquiryFailed(
          merchantReference: reference,
          failure: const EcrMalformed(
            'The host reported a found transaction with no transaction data',
          ),
        );
      }
      return EcrInquiryFound(
        merchantReference: reference,
        transaction: transaction(data),
        raw: _string(map, EcrResultKeys.raw),
      );
    case EcrOutcomes.notFound:
      return EcrInquiryNotFound(
        merchantReference: reference,
        reason: _string(map, EcrResultKeys.responseMessage),
        raw: _string(map, EcrResultKeys.raw),
      );
    case EcrOutcomes.failed:
      return EcrInquiryFailed(
        merchantReference: reference,
        failure: failure(map[EcrResultKeys.failure]),
      );
    case final String unknown:
      return EcrInquiryFailed(
        merchantReference: reference,
        failure: EcrMalformed(_unknownOutcome(unknown, 'an inquiry')),
      );
  }
}