/**
 * useAuthenticatedUser
 *
 * Reactive reader for the AuthenticatedUser global — any component that calls
 * this re-renders when the store patches or clears the user. The single entry
 * point for "what's the current user / currency / completeness state".
 *
 * Returns `null` when signed out. Guards that need to redirect should pair
 * this with `tokenStorage.hasTokens()`.
 *
 * (c) 2026 TWWIM UG. All rights reserved. (www.twwim.com)
 */

import { useSyncExternalStore } from 'react';
import { authenticatedUserStore } from '@/infrastructure/storage/AuthenticatedUserStore';
import type { AuthenticatedUser } from '@/domain/entities/AuthenticatedUser';

const serverSnapshot = (): AuthenticatedUser | null => null;

export function useAuthenticatedUser(): AuthenticatedUser | null {
  return useSyncExternalStore(authenticatedUserStore.subscribe, authenticatedUserStore.get, serverSnapshot);
}