blob: e8290fc3d049fc48441cab7126f337a672e034bd [file] [log] [blame]
// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import 'dart:convert';
import 'package:http_parser/http_parser.dart';
/// The type of a callback that parses parameters from an HTTP response.
typedef GetParameters = Map<String, dynamic> Function(
MediaType contentType, String body);
/// Parses parameters from a response with a JSON body, as per the [OAuth2
/// spec][].
/// [OAuth2 spec]:
Map<String, dynamic> parseJsonParameters(MediaType contentType, String body) {
// The spec requires a content-type of application/json, but some endpoints
// (e.g. Dropbox) serve it as text/javascript instead.
if (contentType == null ||
(contentType.mimeType != 'application/json' &&
contentType.mimeType != 'text/javascript')) {
throw FormatException(
'Content-Type was "$contentType", expected "application/json"');
var untypedParameters = jsonDecode(body);
if (untypedParameters is Map<String, dynamic>) {
return untypedParameters;
throw FormatException('Parameters must be a map, was "$untypedParameters"');