fix(app): send expired sessions to login on oauth authorize (#3181)

fluxer_app/src/features/auth/components/pages/oauth_authorize_page/hooks/useOAuthPublicApp.ts

@@ -39,6 +39,11 @@ export function useOAuthPublicApp(clientId: string | null): PublicAppState {
 				const resp = await http.get<PublicAppData>(Endpoints.OAUTH_PUBLIC_APPLICATION(clientId));
 				if (cancelled) return;
 				const currentUser = resp.body.current_user;
+				if (currentUserId && !currentUser) {
+					logger.warn('OAuth public app fetch returned no current user for a signed-in account');
+					setState({status: 'session_expired', data: null, error: null});
+					return;
+				}
 				if (currentUser && currentUser.id === currentUserId) {
 					const userData = authResponseUserToUserData(currentUser);
 					if (userData) {

fluxer_app/src/features/auth/components/pages/oauth_authorize_page/state/useAuthorizeFlow.ts

@@ -29,6 +29,7 @@ import {
 import {getDefaultLandingPath} from '@app/features/navigation/utils/DefaultLandingUtils';
 import type {BotPermissionOption} from '@app/features/permissions/utils/PermissionUtils';
 import {http} from '@app/features/platform/transport/RestTransport';
+import {HttpError} from '@app/features/platform/types/EndpointError';
 import {failureMessage} from '@app/features/platform/utils/ResponseInspection';
 import {msg} from '@lingui/core/macro';
 import {useLingui} from '@lingui/react/macro';
@@ -388,6 +389,12 @@ export function useAuthorizeFlow(options: UseAuthorizeFlowOptions = {}): Authori
 			setSubmitting(null);
 			setSubmitError(i18n._(AUTHORIZATION_FAILED_DESCRIPTOR));
 		} catch (err) {
+			if (err instanceof HttpError && err.status === 401) {
+				logger.warn('OAuth consent returned 401', err);
+				setSubmitting(null);
+				dispatch({type: 'INIT_SESSION_EXPIRED'});
+				return;
+			}
 			logger.error('Authorization failed', err);
 			setSubmitting(null);
 			setSubmitError(failureMessage(err) ?? i18n._(AUTHORIZATION_FAILED_DESCRIPTOR));