import { auth } from '@/auth'

/**
 * Retrieves the authenticated user ID or throws an Unauthorized error.
 * Use this in Server Actions and API routes to eliminate the repetitive
 * `const session = await auth(); if (!session?.user?.id) ...` boilerplate.
 *
 * @throws {Error} 'Unauthorized' if no valid session exists.
 * @returns The authenticated user's ID string.
 */
export async function requireAuth(): Promise<string> {
  const session = await auth()
  if (!session?.user?.id) {
    throw new Error('Unauthorized')
  }
  return session.user.id
}