feat(VideoInfo): support get by endpoint + more info (#342)

* feat(VideoInfo): get by endpoint + more info

* chore: fix param description for `getInfo()`

src/parser/classes/TwoColumnWatchNextResults.ts

@@ -1,5 +1,15 @@
 import Parser from '../index.js';
 import { YTNode } from '../helpers.js';
+import Text from './misc/Text.js';
+import PlaylistAuthor from './misc/PlaylistAuthor.js';
+import NavigationEndpoint from './NavigationEndpoint.js';
+
+import type Menu from './menus/Menu.js';
+
+type AutoplaySet = {
+  autoplay_video: NavigationEndpoint,
+  next_button_video?: NavigationEndpoint
+};
 
 class TwoColumnWatchNextResults extends YTNode {
   static type = 'TwoColumnWatchNextResults';
@@ -7,12 +17,66 @@ class TwoColumnWatchNextResults extends YTNode {
   results;
   secondary_results;
   conversation_bar;
+  playlist?: {
+    id: string,
+    title: string,
+    author: Text | PlaylistAuthor,
+    contents: YTNode[],
+    current_index: number,
+    is_infinite: boolean,
+    menu: Menu | null
+  };
+  autoplay?: {
+    sets: AutoplaySet[],
+    modified_sets?: AutoplaySet[],
+    count_down_secs?: number
+  };
 
   constructor(data: any) {
     super();
     this.results = Parser.parseArray(data.results?.results.contents);
     this.secondary_results = Parser.parseArray(data.secondaryResults?.secondaryResults.results);
     this.conversation_bar = Parser.parseItem(data?.conversationBar);
+
+    const playlistData = data.playlist?.playlist;
+    if (playlistData) {
+      this.playlist = {
+        id: playlistData.playlistId,
+        title: playlistData.title,
+        author: playlistData.shortBylineText?.simpleText ?
+          new Text(playlistData.shortBylineText) :
+          new PlaylistAuthor(playlistData.longBylineText),
+        contents: Parser.parseArray(playlistData.contents),
+        current_index: playlistData.currentIndex,
+        is_infinite: !!playlistData.isInfinite,
+        menu: Parser.parseItem<Menu>(playlistData.menu)
+      };
+    }
+
+    const autoplayData = data.autoplay?.autoplay;
+    if (autoplayData) {
+      this.autoplay = {
+        sets: autoplayData.sets.map((set: any) => this.#parseAutoplaySet(set))
+      };
+      if (autoplayData.modifiedSets) {
+        this.autoplay.modified_sets = autoplayData.modifiedSets.map((set: any) => this.#parseAutoplaySet(set));
+      }
+      if (autoplayData.countDownSecs) {
+        this.autoplay.count_down_secs = autoplayData.countDownSecs;
+      }
+    }
+  }
+
+  #parseAutoplaySet(data: any): AutoplaySet {
+    const result = {
+      autoplay_video: new NavigationEndpoint(data.autoplayVideo)
+    } as AutoplaySet;
+
+    if (data.nextButtonVideo) {
+      result.next_button_video = new NavigationEndpoint(data.nextButtonVideo);
+    }
+
+    return result;
   }
 }