feat: add login

packages/bolt/app/routes/_index.tsx

@@ -1,13 +1,24 @@
-import type { MetaFunction } from '@remix-run/cloudflare';
+import { json, redirect, type LoaderFunctionArgs, type MetaFunction } from '@remix-run/cloudflare';
 import { ClientOnly } from 'remix-utils/client-only';
 import { BaseChat } from '~/components/chat/BaseChat';
 import { Chat } from '~/components/chat/Chat.client';
 import { Header } from '~/components/Header';
+import { isAuthenticated } from '~/lib/.server/sessions';
 
 export const meta: MetaFunction = () => {
   return [{ title: 'Bolt' }, { name: 'description', content: 'Talk with Bolt, an AI assistant from StackBlitz' }];
 };
 
+export async function loader({ request, context }: LoaderFunctionArgs) {
+  const authenticated = await isAuthenticated(request, context.cloudflare.env);
+
+  if (import.meta.env.DEV || authenticated) {
+    return json({});
+  }
+
+  return redirect('/login');
+}
+
 export default function Index() {
   return (
     <div className="flex flex-col h-full w-full">