Implemented theoretical YouTube PubSub integration using Redis PubSub and some random shit I found on the Internet

KfChatDotNetBot/Services/YouTubeApi.cs

@@ -0,0 +1,6 @@
+namespace KfChatDotNetBot.Services;
+
+public class YouTubeApi
+{
+    
+}

KfChatDotNetBot/Services/YouTubePubSub.cs

@@ -0,0 +1,92 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using KfChatDotNetBot.Settings;
+using NLog;
+using StackExchange.Redis;
+
+namespace KfChatDotNetBot.Services;
+
+public class YouTubePubSub : IDisposable
+{
+    private string _connectionString;
+    private CancellationToken _ct;
+    private Logger _logger = LogManager.GetCurrentClassLogger();
+    private ConnectionMultiplexer? _redis;
+    private ISubscriber? _sub;
+
+    public delegate void OnNewVideoEventHandler(object sender, YouTubePubSubNotificationModel data);
+
+    public event OnNewVideoEventHandler? OnNewVideo;
+    
+    public YouTubePubSub(CancellationToken cancellationToken = default)
+    {
+        _ct = cancellationToken;
+        _connectionString = SettingsProvider.GetValueAsync(BuiltIn.Keys.YouTubePubSubRedisConnectionString).Result
+            .Value ?? throw new InvalidOperationException("YouTube PubSub Redis connection string was not defined");
+    }
+
+    public async Task Connect()
+    {
+        var channel = await SettingsProvider.GetValueAsync(BuiltIn.Keys.YouTubePubSubRedisChannel);
+        if (channel.Value == null)
+        {
+            throw new InvalidOperationException("Redis channel was null");
+        }
+        _redis = await ConnectionMultiplexer.ConnectAsync(_connectionString);
+        _sub = _redis.GetSubscriber();
+        await _sub.SubscribeAsync(new RedisChannel(channel.Value, RedisChannel.PatternMode.Literal), PubSubMessageReceived);
+    }
+
+    public bool IsConnected()
+    {
+        if (_redis == null || _sub == null) return false;
+        return _sub.IsConnected();
+    }
+
+    private void PubSubMessageReceived(RedisChannel channel, RedisValue message)
+    {
+        try
+        {
+            var payload = JsonSerializer.Deserialize<YouTubePubSubNotificationModel>(message.ToString());
+            if (payload == null)
+            {
+                throw new InvalidOperationException("Caught a null when attempting to deserialize the PubSub JSON");
+            }
+            OnNewVideo?.Invoke(this, payload);
+        }
+        catch (Exception e)
+        {
+            _logger.Error("PubSub shit itself when trying to handle a message");
+            _logger.Error(e);
+            _logger.Error("--- Payload ---");
+            _logger.Error(message.ToString());
+        }
+    }
+
+    public void Dispose()
+    {
+        _sub?.UnsubscribeAll();
+        _redis?.Dispose();
+        GC.SuppressFinalize(this);
+    }
+}
+
+public class YouTubePubSubNotificationModel
+{
+    [JsonPropertyName("id")]
+    public required string Id { get; set; }
+    [JsonPropertyName("title")]
+    public required string Title { get; set; }
+    [JsonPropertyName("url")]
+    public required string Url { get; set; }
+    [JsonPropertyName("channel")]
+    public required YouTubePubSubNotificationChannelModel Channel { get; set; }
+}
+
+public class YouTubePubSubNotificationChannelModel
+{
+    [JsonPropertyName("id")]
+    public required string Id { get; set; }
+    [JsonPropertyName("name")]
+    public required string Name { get; set; }
+}

KfChatDotNetBot/Settings/BuiltIn.cs

@@ -441,6 +441,10 @@ public static class BuiltIn
         public static string KasinoEventTextLengthLimit = "Kasino.Event.TextLengthLimit";
         [BuiltInSetting("Length limit for Kasino event option text", SettingValueType.Text, "250", WholeNumberRegex)]
         public static string KasinoEventOptionTextLengthLimit = "Kasino.Event.OptionTextLengthLimit";
+        [BuiltInSetting("Connection string for YouTube PubSub Redis", SettingValueType.Text, "localhost:6379")]
+        public static string YouTubePubSubRedisConnectionString = "YouTube.PubSub.RedisConnectionString";
+        [BuiltInSetting("Channel for YouTube PubSub with Redis", SettingValueType.Text, "yt-pubsub")]
+        public static string YouTubePubSubRedisChannel = "YouTube.PubSub.RedisChannel";
     }
 }