fix: make sure it is a stream and it is live

src/src/StevesBot.Webhook/Program.cs

@@ -85,7 +85,7 @@ app.MapPost(ytCallback, static async (HttpContext context, [FromServices] ILogge
     return Results.NotFound();
   }
 
-  if (video.IsStream is false)
+  if (video.IsLiveStream is false)
   {
     logger.LogInformation("Video ID {VideoId} is not a live stream.", videoId);
     return Results.Ok();

src/src/StevesBot.Webhook/YouTube/Data/YouTubeSnippet.cs

@@ -0,0 +1,7 @@
+namespace StevesBot.Webhook.YouTube.Data;
+
+internal sealed record YouTubeSnippet
+{
+  [JsonPropertyName("liveBroadcastContent")]
+  public string LiveBroadcastContent { get; init; } = string.Empty;
+}

src/src/StevesBot.Webhook/YouTube/Data/YouTubeVideo.cs

@@ -8,5 +8,8 @@ internal sealed record YouTubeVideo
   [JsonPropertyName("liveStreamingDetails")]
   public YouTubeLiveStreamingDetails? LiveStreamingDetails { get; init; }
 
-  public bool IsStream => LiveStreamingDetails is not null;
+  [JsonPropertyName("snippet")]
+  public YouTubeSnippet Snippet { get; init; } = new();
+
+  public bool IsLiveStream => LiveStreamingDetails is not null && Snippet.LiveBroadcastContent is "live";
 }