From 165a501a7859f6b2cb5c3fafd255df14ba299007 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=E2=96=88=E2=96=88=E2=96=88=E2=96=88=E2=96=88?=
 <dev.nullinside@gmail.com>
Date: Tue, 22 Jul 2025 18:12:12 -0400
Subject: [PATCH] bug: fixing subscription issue with twitch client chat
 messages

When I modified the code to be channel specific I completely forgot that
+=ing a delegate will append copies if you don't -= the item first.
Fixed it now. The -= will ensure that only a single copy of the
subscription is added to the chain.
---
 src/Nullinside.Api.Common/Twitch/TwitchClientProxy.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Nullinside.Api.Common/Twitch/TwitchClientProxy.cs b/src/Nullinside.Api.Common/Twitch/TwitchClientProxy.cs
index 1b122a1..bfbea60 100644
--- a/src/Nullinside.Api.Common/Twitch/TwitchClientProxy.cs
+++ b/src/Nullinside.Api.Common/Twitch/TwitchClientProxy.cs
@@ -188,6 +188,7 @@ public async Task AddMessageCallback(string channel, Action<OnMessageReceivedArg
     string channelSan = channel.ToLowerInvariant();
     lock (_onMessageReceived) {
       if (!_onMessageReceived.TryAdd(channelSan, callback)) {
+        _onMessageReceived[channelSan] -= callback;
         _onMessageReceived[channelSan] += callback;
       }
     }