authenticate method

Future<CarpUser> authenticate({ required String username, required String password, })

Authenticate to this CARP service using a username and password.

Return the signed in user (with an OAuthToken access token), if successful. Throws a CarpServiceException if not successful.

Implementation

Future<CarpUser> authenticate({
  required String username,
  required String password,
}) async {
  if (_app == null) {
    throw CarpServiceException(
        message:
            "CARP Service not initialized. Call 'CarpService().configure()' first.");
  }

  _currentUser = CarpUser(username: username);

  final loginBody = {
    "client_id": _app!.oauth.clientID,
    "client_secret": _app!.oauth.clientSecret,
    "grant_type": "password",
    "scope": "read",
    "username": username,
    "password": password
  };

  final http.Response response = await httpr.post(
    Uri.encodeFull(authEndpointUri),
    headers: _authenticationHeader,
    body: loginBody,
  );

  int httpStatusCode = response.statusCode;
  Map<String, dynamic> responseJson =
      json.decode(response.body) as Map<String, dynamic>;

  if (httpStatusCode == HttpStatus.ok) {
    _currentUser!.authenticated(OAuthToken.fromMap(responseJson));
    await getCurrentUserProfile();
    _authEventController.add(AuthEvent.authenticated);
    return _currentUser!;
  }

  // All other cases are treated as a failed attempt and throws an error
  _authEventController.add(AuthEvent.failed);
  _currentUser = null;

  // auth error response from CARP is on the form
  //      {error: invalid_grant, error_description: Bad credentials}
  throw CarpServiceException(
    httpStatus: HTTPStatus(httpStatusCode, response.reasonPhrase),
    message: responseJson["error_description"].toString(),
  );
}