Capture YouTube titles from Discord's embed cache

media-scrape/src/extract.ts

@@ -34,6 +34,8 @@ export interface ExtractedMedia {
     previewUrl: string | null;
     /** Embed title, when Discord provides one (YouTube and friends). Null elsewhere. */
     title: string | null;
+    /** Embed author (the YouTube channel Discord shows). Null elsewhere. */
+    titleAuthor: string | null;
 }
 
 /**
@@ -95,7 +97,8 @@ function extractEmbed(embed: CoreEmbed): ExtractedMedia | null {
         width: embed.width ?? null,
         height: embed.height ?? null,
         durationSecs: null,
-        title: embed.title ?? null
+        title: embed.title ?? null,
+        titleAuthor: embed.authorName ?? null
     };
 
     if (embed.videoUrl) {
@@ -150,7 +153,8 @@ function extractSticker(sticker: CoreSticker): ExtractedMedia | null {
         durationSecs: null,
         downloaded: false,
         previewUrl: null,
-        title: null
+        title: null,
+        titleAuthor: null
     };
 }
 
@@ -178,7 +182,8 @@ function extractFrom(message: MediaMessage): ExtractedMedia[] {
                     : null,
             downloaded: false,
             previewUrl: null,
-            title: null
+            title: null,
+            titleAuthor: null
         });
     }