From af1745af907dd26322e9a9c6db914e2b55f6b58a Mon Sep 17 00:00:00 2001
From: Ole <5199030+oleua@users.noreply.github.com>
Date: Sun, 1 Mar 2026 09:24:05 +0200
Subject: [PATCH] Refactor startRegister to use UID instead of displayName

Refactoring startRegister function to replace displayName with UID to overcome the error when displayName contains non-ASCII symbols.

Solves https://github.com/nextcloud/twofactor_webauthn/issues/945

Signed-off-by: Ole <5199030+oleua@users.noreply.github.com>
---
 lib/Controller/SettingsController.php | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/Controller/SettingsController.php b/lib/Controller/SettingsController.php
index 6b6123a0..b9863941 100644
--- a/lib/Controller/SettingsController.php
+++ b/lib/Controller/SettingsController.php
@@ -35,8 +35,15 @@ public function __construct(string $appName, IRequest $request, WebAuthnManager
 	 * @UseSession
 	 */
 	public function startRegister(): JSONResponse {
-		return new JSONResponse($this->manager->startRegistration($this->userSession->getUser(), $this->request->getServerHost()));
+		$user = $this->userSession->getUser();
+		$options = $this->manager->startRegistration($user, $this->request->getServerHost());
+		$data = json_decode(json_encode($options), true);
+		if (isset($data['user']['displayName'])) {
+			$data['user']['displayName'] = $user->getUID();
+		}
+		return new JSONResponse($data);
 	}
+	
 
 	/**
 	 * @NoAdminRequired