callFunction method

Implementation

@override
Future<Either<List<JSON>, JSON>> callFunction({required String function, required String token, JSON body = const {}, bool redact = false}) async {
  log("Calling $function ${redact ? "with [redacted body]" : "with body ${jsonEncode(body)}"}");

  var payload = body
    ..removeWhere((key, value) {
      final remove = value == null;

      if (remove) {
        log('Removing null value for key $key');
      }

      return remove;
    });

  // check for any bool values and convert them to 0 or 1
  payload = payload.map((key, value) {
    if (value is bool) {
      return MapEntry(key, value ? 1 : 0);
    }

    return MapEntry(key, value);
  });

  payload['wstoken'] = token;
  payload['moodlewsrestformat'] = 'json';
  payload['wsfunction'] = function;

  final response = await _networkService.post(
    '$kMoodleServerAdress/webservice/rest/server.php',
    payload,
    headers: {'Content-Type': 'application/x-www-form-urlencoded'},
  );

  if (response.isNotOk) {
    final e = ApiServiceException('Could not reach server', response.statusCode, response.body);

    log('Error calling function $function', e);

    throw e;
  }

  log("$function returned ${redact ? "[redacted body]" : "body ${jsonEncode(response.body)}"}");

  if (response.body == null) {
    return const Right({});
  }

  if (response.body is List) {
    // convert List<dynamic> to List<JSON>
    final jsonList = (response.body as List<dynamic>).map((dynamic e) => e as JSON).toList();

    return Left(jsonList);
  }

  if (response.body['exception'] != null) {
    final e = ApiServiceException(response.body['message'], response.statusCode, response.body);

    log('Error calling function $function', e);

    throw e;
  }

  return Right(response.body);
}