add auth

src/app/library/[id]/page.tsx

@@ -1,5 +1,7 @@
 import { getLibrary } from '@/lib/libraries'
-import { notFound } from 'next/navigation'
+import { notFound, redirect } from 'next/navigation'
+import { getServerSession } from '@/lib/auth'
+import { getPermittedLibraryIds } from '@/lib/users'
 import GamesView from '@/components/games/GamesView'
 import MixedView from '@/components/mixed/MixedView'
 import MoviesView from '@/components/movies/MoviesView'
@@ -14,9 +16,17 @@ export default async function LibraryPage({ params, searchParams }: Props) {
   const { id } = await params
   const { path: subpath } = await searchParams
 
+  const session = await getServerSession()
+  if (!session.userId) redirect('/login')
+
   const library = getLibrary(id)
   if (!library) notFound()
 
+  if (session.role !== 'admin') {
+    const permitted = getPermittedLibraryIds(session.userId)
+    if (!permitted.includes(id)) notFound()
+  }
+
   return (
     <div>
       <div className="flex items-center gap-2 mb-6">