New User Panel with TOTP & change password. Admin Panel added Global OTPAuth URL

checkAuth.php

@@ -15,8 +15,25 @@ if (!isset($_SESSION['authenticated']) || $_SESSION['authenticated'] !== true) {
     exit;
 }
 
+$totp_enabled = false;
+$username = $_SESSION['username'] ?? '';
+if ($username) {
+    $lines = file($usersFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+    foreach ($lines as $line) {
+        $parts = explode(":", trim($line));
+        // Assuming first field is username and fourth (if exists) is the TOTP secret.
+        if ($parts[0] === $username) {
+            if (isset($parts[3]) && trim($parts[3]) !== "") {
+                $totp_enabled = true;
+            }
+            break;
+        }
+    }
+}
+
 echo json_encode([
     "authenticated" => true,
-    "isAdmin" => isset($_SESSION["isAdmin"]) ? $_SESSION["isAdmin"] : false
+    "isAdmin" => isset($_SESSION["isAdmin"]) ? $_SESSION["isAdmin"] : false,
+    "totp_enabled" => $totp_enabled
 ]);
 ?>