create a comprehensive admin dashbioard with permalink /admin/ and creat

middleware.ts

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+
+import {NextResponse} from 'next/server';
+import type {NextRequest} from 'next/server';
+
+export function middleware(request: NextRequest) {
+  const session = request.cookies.get('session');
+
+  // Redirect to login if trying to access /admin without a session
+  if (request.nextUrl.pathname.startsWith('/admin') && !session) {
+    return NextResponse.redirect(new URL('/login', request.url));
+  }
+
+  // Redirect to admin if trying to access /login with a session
+  if (request.nextUrl.pathname === '/login' && session) {
+    return NextResponse.redirect(new URL('/admin', request.url));
+  }
+
+  return NextResponse.next();
+}
+
+export const config = {
+  matcher: ['/admin/:path*', '/login'],
+};