From 1c75fb9d89af2ad3b2761d1c4edfcf0f78148a5c Mon Sep 17 00:00:00 2001
From: Chris <ChrisBlueStone@users.noreply.github.com>
Date: Sun, 19 Nov 2023 00:55:49 -0600
Subject: [PATCH] Updated ConnectionCredentials so a username is optional.

If no username is provided to the ConnectionCredentials, a default username of `justinfan` right-padded with 4-5 random digits will be generated.
---
 .../ConnectionCredentials.cs                   | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/TwitchLib.Client.Models/ConnectionCredentials.cs b/TwitchLib.Client.Models/ConnectionCredentials.cs
index cefa5e2c..9779fb2d 100644
--- a/TwitchLib.Client.Models/ConnectionCredentials.cs
+++ b/TwitchLib.Client.Models/ConnectionCredentials.cs
@@ -22,22 +22,26 @@ public class ConnectionCredentials
 
         /// <summary>Constructor for ConnectionCredentials object.</summary>
         public ConnectionCredentials(
-            string twitchUsername,
-            string twitchOAuth,
+            string twitchUsername = null,
+            string twitchOAuth = null,
             string twitchWebsocketURI = DefaultWebSocketUri,
             bool disableUsernameCheck = false,
             Capabilities capabilities = null)
         {
-            if (!disableUsernameCheck && !new Regex("^([a-zA-Z0-9][a-zA-Z0-9_]{3,25})$").Match(twitchUsername).Success)
+            if (twitchUsername != null &&
+                !disableUsernameCheck &&
+                !new Regex("^([a-zA-Z0-9][a-zA-Z0-9_]{3,25})$").Match(twitchUsername).Success)
+            {
                 throw new Exception($"Twitch username does not appear to be valid. {twitchUsername}");
+            }
 
-            TwitchUsername = twitchUsername.ToLower();
-            TwitchOAuth = twitchOAuth;
+            TwitchUsername = twitchUsername?.ToLower() ?? $"justinfan${1000 + new Random().Next(79999)}";
+            TwitchOAuth = twitchOAuth ?? string.Empty;
 
             // Make sure proper formatting is applied to oauth
-            if (!twitchOAuth.Contains(":"))
+            if (!TwitchOAuth.Contains(":"))
             {
-                TwitchOAuth = $"oauth:{twitchOAuth.Replace("oauth", "")}";
+                TwitchOAuth = $"oauth:{TwitchOAuth.Replace("oauth", "")}";
             }
 
             TwitchWebsocketURI = twitchWebsocketURI;