feat(quick-260917-gyd): Sitzungswaechter erkennt tote Sitzung, Header leitet ab
- auth-actions.ts: fetchSessionState() unterscheidet tote Sitzung (401/403/leere 200-Antwort, Cookie wird geloescht) von API-Ausfall (5xx/Netzwerkfehler/Nicht-JSON, unavailable ohne Redirect); fetchCurrentUser bleibt unveraendert - header.tsx: Waechter im useEffect leitet bei toter Sitzung per Vollnavigation auf /login?next=… um, bleibt bei API-Ausfall still Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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@@ -0,0 +1,171 @@
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import { afterEach, describe, expect, it, vi } from 'vitest';
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/**
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* auth-actions.test (fetchSessionState) — Sitzungswaechter (quick-260917-gyd).
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*
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* next/headers wird gemockt (cookies() liefert ein Promise auf ein Objekt
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* mit get/set/delete aus vi.hoisted, Muster: module-access.test.tsx),
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* next/navigation ebenfalls (redirect ist hier ungenutzt, muss aber
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* importierbar bleiben), fetch per vi.stubGlobal. Die 'use server'-
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* Direktive ist unter vitest wirkungslos.
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*/
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const { cookieGet, cookieSet, cookieDelete } = vi.hoisted(() => ({
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cookieGet: vi.fn(),
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cookieSet: vi.fn(),
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cookieDelete: vi.fn(),
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}));
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vi.mock('next/headers', () => ({
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cookies: () =>
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Promise.resolve({
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get: cookieGet,
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set: cookieSet,
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delete: cookieDelete,
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}),
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}));
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vi.mock('next/navigation', () => ({
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redirect: vi.fn(),
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}));
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afterEach(() => {
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vi.clearAllMocks();
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vi.unstubAllGlobals();
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});
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describe('fetchSessionState', () => {
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it('Test 1: kein Cookie -> unauthenticated, kein fetch', async () => {
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cookieGet.mockReturnValue(undefined);
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const fetchMock = vi.fn();
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vi.stubGlobal('fetch', fetchMock);
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const { fetchSessionState } = await import('./auth-actions');
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const result = await fetchSessionState();
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expect(result).toEqual({ status: 'unauthenticated' });
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expect(fetchMock).not.toHaveBeenCalled();
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});
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it('Test 2: 200 mit Benutzer -> authenticated, Cookie bleibt, Cookie-Header gesetzt', async () => {
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cookieGet.mockReturnValue({ value: 'session-abc' });
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const fetchMock = vi.fn(() =>
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Promise.resolve({
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ok: true,
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status: 200,
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text: () => Promise.resolve('{"id":"u1","username":"schalli"}'),
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}),
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);
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vi.stubGlobal('fetch', fetchMock);
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const { fetchSessionState } = await import('./auth-actions');
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const result = await fetchSessionState();
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expect(result.status).toBe('authenticated');
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if (result.status === 'authenticated') {
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expect(result.user.username).toBe('schalli');
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}
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expect(cookieDelete).not.toHaveBeenCalled();
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const [, options] = fetchMock.mock.calls[0] as unknown as [
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string,
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RequestInit,
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];
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expect((options.headers as Record<string, string>).Cookie).toBe(
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'session=session-abc',
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);
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});
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it('Test 3: Status 401 -> unauthenticated, Cookie genau einmal geloescht', async () => {
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cookieGet.mockReturnValue({ value: 'session-abc' });
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vi.stubGlobal(
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'fetch',
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vi.fn(() => Promise.resolve({ ok: false, status: 401, text: () => Promise.resolve('') })),
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);
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const { fetchSessionState } = await import('./auth-actions');
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const result = await fetchSessionState();
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expect(result).toEqual({ status: 'unauthenticated' });
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expect(cookieDelete).toHaveBeenCalledTimes(1);
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expect(cookieDelete).toHaveBeenCalledWith('session');
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});
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it('Test 4: Status 403 -> unauthenticated, Cookie geloescht', async () => {
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cookieGet.mockReturnValue({ value: 'session-abc' });
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vi.stubGlobal(
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'fetch',
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vi.fn(() => Promise.resolve({ ok: false, status: 403, text: () => Promise.resolve('') })),
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);
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const { fetchSessionState } = await import('./auth-actions');
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const result = await fetchSessionState();
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expect(result).toEqual({ status: 'unauthenticated' });
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expect(cookieDelete).toHaveBeenCalledTimes(1);
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});
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it('Test 5: Status 200 mit leerem Body (oder "null") -> unauthenticated, Cookie geloescht', async () => {
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cookieGet.mockReturnValue({ value: 'session-abc' });
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vi.stubGlobal(
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'fetch',
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vi.fn(() => Promise.resolve({ ok: true, status: 200, text: () => Promise.resolve('') })),
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);
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const { fetchSessionState } = await import('./auth-actions');
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const result1 = await fetchSessionState();
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expect(result1).toEqual({ status: 'unauthenticated' });
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expect(cookieDelete).toHaveBeenCalledTimes(1);
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vi.clearAllMocks();
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cookieGet.mockReturnValue({ value: 'session-abc' });
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vi.stubGlobal(
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'fetch',
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vi.fn(() => Promise.resolve({ ok: true, status: 200, text: () => Promise.resolve('null') })),
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);
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const result2 = await fetchSessionState();
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expect(result2).toEqual({ status: 'unauthenticated' });
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expect(cookieDelete).toHaveBeenCalledTimes(1);
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});
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it('Test 6: Status 500 -> unavailable, Cookie bleibt', async () => {
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cookieGet.mockReturnValue({ value: 'session-abc' });
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vi.stubGlobal(
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'fetch',
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vi.fn(() => Promise.resolve({ ok: false, status: 500, text: () => Promise.resolve('') })),
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);
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const { fetchSessionState } = await import('./auth-actions');
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const result = await fetchSessionState();
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expect(result).toEqual({ status: 'unavailable' });
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expect(cookieDelete).not.toHaveBeenCalled();
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});
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it('Test 7: fetch wirft (Netzwerkfehler) -> unavailable, Cookie bleibt', async () => {
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cookieGet.mockReturnValue({ value: 'session-abc' });
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vi.stubGlobal(
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'fetch',
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vi.fn(() => Promise.reject(new TypeError('fetch failed'))),
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);
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const { fetchSessionState } = await import('./auth-actions');
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const result = await fetchSessionState();
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expect(result).toEqual({ status: 'unavailable' });
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expect(cookieDelete).not.toHaveBeenCalled();
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});
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it('Test 8: Status 200 mit nicht-JSON-Body -> unavailable, Cookie bleibt', async () => {
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cookieGet.mockReturnValue({ value: 'session-abc' });
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vi.stubGlobal(
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'fetch',
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vi.fn(() => Promise.resolve({ ok: true, status: 200, text: () => Promise.resolve('<html>') })),
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);
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const { fetchSessionState } = await import('./auth-actions');
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const result = await fetchSessionState();
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expect(result).toEqual({ status: 'unavailable' });
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expect(cookieDelete).not.toHaveBeenCalled();
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});
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});
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@@ -236,6 +236,72 @@ export async function updateAccentColorAction(
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}
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}
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export type SessionState =
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| { status: 'authenticated'; user: AuthUser }
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| { status: 'unauthenticated' }
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| { status: 'unavailable' };
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/**
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* Klassifiziert die aktuelle Sitzung fuer den Header-Waechter
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* (quick-260917-gyd). Die Unterscheidung ist load-bearing: nur eine
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* nachweislich tote Sitzung (401/403 oder 200 ohne Benutzerobjekt — so
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* antwortet NestJS, wenn `AuthService.getMe` bei geloeschtem Benutzer
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* `null` liefert, z. B. nach Neuanlage der Datenbank) darf das Cookie
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* loeschen und abmelden. Ein API-Ausfall (5xx, Netzwerkfehler, Antwort
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* ohne gueltiges JSON) darf KEINE Abmelde-Schleife ausloesen und liefert
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* deshalb `unavailable`, ohne das Cookie anzufassen.
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*
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* `cookieStore.delete()` ist nur in Server Actions/Route Handlers
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* erlaubt — deshalb passiert die Loeschung hier und nicht im Header.
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*/
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export async function fetchSessionState(): Promise<SessionState> {
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const cookieStore = await cookies();
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const session = cookieStore.get('session')?.value;
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if (!session) {
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return { status: 'unauthenticated' };
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}
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try {
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const response = await fetch(`${API_URL}/auth/me`, {
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headers: {
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Cookie: `session=${session}`,
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},
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cache: 'no-store',
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});
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if (response.status === 401 || response.status === 403) {
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cookieStore.delete('session');
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return { status: 'unauthenticated' };
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}
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if (!response.ok) {
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return { status: 'unavailable' };
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}
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const body = (await response.text()).trim();
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if (body === '' || body === 'null') {
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cookieStore.delete('session');
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return { status: 'unauthenticated' };
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}
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let parsed: unknown;
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try {
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parsed = JSON.parse(body);
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} catch {
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return { status: 'unavailable' };
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}
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if (parsed && typeof parsed === 'object' && 'id' in parsed) {
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return { status: 'authenticated', user: parsed as AuthUser };
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}
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return { status: 'unavailable' };
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} catch {
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return { status: 'unavailable' };
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}
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}
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/**
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* Fetch the current authenticated user from the API.
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* Uses the session cookie for authentication.
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