handleRoute method

Future<Response> handleRoute(Request request, [ Object? extras ])

Handles the route's response and invoke the Function in ControllerRoute.handler

Implementation

Future<Response> handleRoute(final Request request,
    [final Object? extras]) async {
  final List<dynamic> positionalArguments = [];
  final Map<Symbol, dynamic> namedArguments = {};
  for (final param in _route.params) {
    if (param.isPositional) {
      if (param.isPath) {
        final pathParam = _getPathParam(request, param);
        if (pathParam is String) {
          final value = pathParam.stringToType(param.type);
          positionalArguments.add(value);
        } else {
          positionalArguments.add(pathParam);
        }
      } else if (param.isQuery) {
        final queryParam = _getQueryParam(request, param);
        if (queryParam is String) {
          final value = queryParam.stringToType(param.type);
          positionalArguments.add(value);
        } else {
          positionalArguments.add(queryParam);
        }
      } else {
        final bodyJson = await request.body.asJson;
        final bodyInstance = param.fromJson?.call(bodyJson);
        positionalArguments.add(bodyInstance);
      }
    } else {
      if (param.isPath) {
        final pathParam = _getPathParam(request, param);
        if (pathParam is String) {
          final value = pathParam.stringToType(param.type);
          namedArguments[Symbol(param.name)] = value;
        } else {
          namedArguments[Symbol(param.name)] = pathParam;
        }
      } else {
        final Object? queryParam = _getQueryParam(request, param);
        if (queryParam is String) {
          final value = queryParam.stringToType(param.type);
          namedArguments[Symbol(param.name)] = value;
        } else {
          namedArguments[Symbol(param.name)] = queryParam;
        }
      }
    }
  }
  final dynamic response;
  try {
    response = await Function.apply(
        _route.handler, positionalArguments, namedArguments);
  } on HttpStatusCodeException catch (e) {
    return Response(e.statusCode, body: e.message);
  } catch (e) {
    rethrow;
  }

  dynamic body;
  if (response is Response) {
    return response;
  } else if (response is Iterable) {
    body = jsonEncode(response.toList());
  } else if (response is Map || response is num) {
    body = jsonEncode(response);
  } else {
    try {
      body = jsonEncode(response.toJson());
    } on NoSuchMethodError catch (_) {
      body = response;
    }
  }

  return Response(
    _route.httpCode ?? HttpStatus.ok,
    body: body,
    headers: _route.headers,
  );
}