s3

src/pages/login.jsx

@@ -1,12 +1,28 @@
 import { useState } from 'react';
-import { signIn, getCsrfToken } from 'next-auth/react';
+import { signIn, signOut, getCsrfToken, useSession } from 'next-auth/react';
 import { Formik, Field, ErrorMessage } from 'formik';
 import * as Yup from 'yup';
 import { useRouter } from 'next/router';
+import Link from 'next/link'
+
 
 export default function SignIn({ csrfToken }) {
   const router = useRouter();
   const [error, setError] = useState(null);
+  const { data: session } = useSession()
+  // console.log(session)
+    if (session) {
+      return (
+        <>
+        <br /><br />
+          You are already Signed in, click on continue
+          <br />
+          <Link href="/">Continue...</Link>
+          <br /><br />
+          or : <button onClick={() => signOut()}>Sign out</button>
+        </>
+      )
+    }
 
   return (
     <>