fix: patch event

NostrStreamer/Controllers/NostrController.cs

@@ -102,7 +102,18 @@ public class NostrController : Controller
     {
         var pubkey = GetPubKey();
         if (string.IsNullOrEmpty(pubkey)) return Unauthorized();
+
+        // patch current event if specified
+        if (req.Id != null)
+        {
+            await _userService.UpdateStreamInfo(pubkey, req);
+            var stream = await _streamManagerFactory.ForStream(req.Id.Value);
+            await stream.UpdateEvent();
+        }
+        else
+        {
             await _userService.SetStreamInfoDefaults(pubkey, req);
+        }
 
         return Accepted();
     }

NostrStreamer/Controllers/PlaylistController.cs

@@ -100,6 +100,8 @@ public class PlaylistController : Controller
         try
         {
             var streamManager = await _streamManagerFactory.ForCurrentStream(pubkey);
+            if (streamManager == null)
+                return NotFound();
             var userStream = streamManager.GetStream();
             return Redirect($"stream/{userStream.Id}.m3u8");
         }

NostrStreamer/Services/StreamManager/StreamManagerFactory.cs

@@ -138,7 +138,7 @@ public class StreamManagerFactory
         return new NostrStreamManager(_loggerFactory.CreateLogger<NostrStreamManager>(), ctx, _serviceProvider);
     }
 
-    public async Task<IStreamManager> ForCurrentStream(string pubkey)
+    public async Task<IStreamManager?> ForCurrentStream(string pubkey)
     {
         var stream = await _db.Streams
             .AsNoTracking()
@@ -147,7 +147,8 @@ public class StreamManagerFactory
             .Include(a => a.StreamKey)
             .FirstOrDefaultAsync(a => a.PubKey.Equals(pubkey) && a.State == UserStreamState.Live);
 
-        if (stream == default) throw new Exception("No live stream");
+        if (stream == null)
+            return null;
 
         var ctx = new StreamManagerContext
         {