Future clientCredentialsGrant()

in lib/src/client_credentials_grant.dart [42:79]

• 32 lines of code
• 6 McCabe index (conditional complexity)

Future<Client> clientCredentialsGrant(
    Uri authorizationEndpoint, String? identifier, String? secret,
    {Iterable<String>? scopes,
    bool basicAuth = true,
    http.Client? httpClient,
    String? delimiter,
    Map<String, dynamic> Function(MediaType? contentType, String body)?
        getParameters}) async {
  delimiter ??= ' ';
  var startTime = DateTime.now();

  var body = {'grant_type': 'client_credentials'};

  var headers = <String, String>{};

  if (identifier != null) {
    if (basicAuth) {
      headers['Authorization'] = basicAuthHeader(identifier, secret!);
    } else {
      body['client_id'] = identifier;
      if (secret != null) body['client_secret'] = secret;
    }
  }

  if (scopes != null && scopes.isNotEmpty) {
    body['scope'] = scopes.join(delimiter);
  }

  httpClient ??= http.Client();
  var response = await httpClient.post(authorizationEndpoint,
      headers: headers, body: body);

  var credentials = handleAccessTokenResponse(response, authorizationEndpoint,
      startTime, scopes?.toList() ?? [], delimiter,
      getParameters: getParameters);
  return Client(credentials,
      identifier: identifier, secret: secret, httpClient: httpClient);
}