From f6bab8c0d8c7058ea9e16cc0310201f9054712cd Mon Sep 17 00:00:00 2001
From: XShine555 <xshine555@gmail.com>
Date: Sun, 5 Jul 2026 21:59:55 +0200
Subject: [PATCH] refactor(gateway): simplify prefix extraction in
 TicketValidator

Read the prefix claim via ClaimsIdentity.FindFirst instead of a three-part
ternary over the claims dictionary, and drop the XML summary.
---
 .../Authentication/TicketValidator.cs                 | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/backend/Musify.StreamingGateway/Authentication/TicketValidator.cs b/backend/Musify.StreamingGateway/Authentication/TicketValidator.cs
index 4bd012c..3ea8ea8 100644
--- a/backend/Musify.StreamingGateway/Authentication/TicketValidator.cs
+++ b/backend/Musify.StreamingGateway/Authentication/TicketValidator.cs
@@ -34,10 +34,6 @@ public sealed class TicketValidator : IDisposable
         };
     }
 
-    /// <summary>
-    /// Validates the stream ticket and returns the authorized object-key prefix,
-    /// or <see langword="null"/> if the ticket is missing, invalid, or carries no prefix.
-    /// </summary>
     public async Task<string?> ValidateTicketAsync(string? token)
     {
         if (string.IsNullOrWhiteSpace(token))
@@ -47,11 +43,8 @@ public sealed class TicketValidator : IDisposable
         if (!result.IsValid)
             return null;
 
-        return result.Claims.TryGetValue("prefix", out var claim)
-               && claim is string prefix
-               && !string.IsNullOrEmpty(prefix)
-            ? prefix
-            : null;
+        var prefix = result.ClaimsIdentity?.FindFirst("prefix")?.Value;
+        return string.IsNullOrEmpty(prefix) ? null : prefix;
     }
 
     public void Dispose() => _rsa.Dispose();