fix: restrict authentication of users

src/app/api/auth/[...nextauth]/auth-options.ts

@@ -46,6 +46,15 @@ export const authOptions: NextAuthOptions = {
 
       return session
     },
+    signIn({ user }) {
+      const availableEmails = ['[email protected]']
+
+      if (availableEmails.includes(user.email)) {
+        return true
+      }
+
+      return false
+    },
   },
   session: {
     strategy: 'jwt',

src/app/auth/error/page.tsx

@@ -1,3 +1,31 @@
+import { Button } from '@/components/ui/button'
+import { Card, CardContent } from '@/components/ui/card'
+import { Settings } from 'lucide-react'
+import Link from 'next/link'
+
 export default function SignInError() {
-  return <h1>Error</h1>
+  return (
+    <div className="wrapper">
+      <div className="flex items-center justify-center page-container">
+        <Card>
+          <CardContent className="mt-6 flex flex-col items-center justify-center gap-6">
+            <Settings size={24} className="animate-spin" />
+
+            <div>
+              <span className="block text-2xl font-semibold">
+                A plataforma ainda está em construção
+              </span>
+              <span className="block text-center text-muted-foreground">
+                O acesso é limite somente a alguns usuário
+              </span>
+            </div>
+
+            <Button asChild>
+              <Link href="/">Voltar para a página inicial</Link>
+            </Button>
+          </CardContent>
+        </Card>
+      </div>
+    </div>
+  )
 }