feat: add support for chapters & video heatmap (#263)

* feat: add support for chapters & video heatmap

* chore: add tests

src/parser/classes/Chapter.ts

@@ -0,0 +1,21 @@
+import Text from './misc/Text';
+import Thumbnail from './misc/Thumbnail';
+
+import { YTNode } from '../helpers';
+
+class Chapter extends YTNode {
+  static type = 'Chapter';
+
+  title: Text;
+  time_range_start_millis: number;
+  thumbnail: Thumbnail[];
+
+  constructor(data: any) {
+    super();
+    this.title = new Text(data.title);
+    this.time_range_start_millis = data.timeRangeStartMillis;
+    this.thumbnail = Thumbnail.fromResponse(data.thumbnail);
+  }
+}
+
+export default Chapter;

src/parser/classes/DecoratedPlayerBar.ts

@@ -0,0 +1,19 @@
+import Parser from '..';
+import { YTNode } from '../helpers';
+import type Button from './Button';
+import type MultiMarkersPlayerBar from './MultiMarkersPlayerBar';
+
+class DecoratedPlayerBar extends YTNode {
+  static type = 'DecoratedPlayerBar';
+
+  player_bar: MultiMarkersPlayerBar | null;
+  player_bar_action_button: Button | null;
+
+  constructor(data: any) {
+    super();
+    this.player_bar = Parser.parseItem<MultiMarkersPlayerBar>(data.playerBar);
+    this.player_bar_action_button = Parser.parseItem<Button>(data.playerBarActionButton);
+  }
+}
+
+export default DecoratedPlayerBar;

src/parser/classes/HeatMarker.ts

@@ -0,0 +1,18 @@
+import { YTNode } from '../helpers';
+
+class HeatMarker extends YTNode {
+  static type = 'HeatMarker';
+
+  time_range_start_millis: number;
+  marker_duration_millis: number;
+  heat_marker_intensity_score_normalized: number;
+
+  constructor(data: any) {
+    super();
+    this.time_range_start_millis = data.timeRangeStartMillis;
+    this.marker_duration_millis = data.markerDurationMillis;
+    this.heat_marker_intensity_score_normalized = data.heatMarkerIntensityScoreNormalized;
+  }
+}
+
+export default HeatMarker;

src/parser/classes/Heatmap.ts

@@ -0,0 +1,25 @@
+import Parser from '..';
+import type HeatMarker from './HeatMarker';
+
+import { YTNode } from '../helpers';
+
+class Heatmap extends YTNode {
+  static type = 'Heatmap';
+
+  max_height_dp: number;
+  min_height_dp: number;
+  show_hide_animation_duration_millis: number;
+  heat_markers: HeatMarker[];
+  heat_markers_decorations: any;
+
+  constructor(data: any) {
+    super();
+    this.max_height_dp = data.maxHeightDp;
+    this.min_height_dp = data.minHeightDp;
+    this.show_hide_animation_duration_millis = data.showHideAnimationDurationMillis;
+    this.heat_markers = Parser.parseArray<HeatMarker>(data.heatMarkers);
+    this.heat_markers_decorations = Parser.parseArray(data.heatMarkersDecorations);
+  }
+}
+
+export default Heatmap;

src/parser/classes/MultiMarkersPlayerBar.ts

@@ -0,0 +1,44 @@
+import Parser from '..';
+import type Chapter from './Chapter';
+import type Heatmap from './Heatmap';
+
+import { observe, ObservedArray, YTNode } from '../helpers';
+
+class Marker extends YTNode {
+  static type = 'Marker';
+
+  marker_key: string;
+  value: {
+    heatmap?: Heatmap | null;
+    chapters?: Chapter[];
+  };
+
+  constructor (data: any) {
+    super();
+    this.marker_key = data.key;
+
+    this.value = {};
+
+    if (data.value.heatmap) {
+      this.value.heatmap = Parser.parseItem<Heatmap>(data.value.heatmap);
+    }
+
+    if (data.value.chapters) {
+      this.value.chapters = Parser.parseArray<Chapter>(data.value.chapters);
+    }
+  }
+}
+
+class MultiMarkersPlayerBar extends YTNode {
+  static type = 'MultiMarkersPlayerBar';
+
+  markers_map: ObservedArray<Marker>;
+
+  constructor(data: any) {
+    super();
+    this.markers_map = observe(data.markersMap?.map((marker: { key: string; value: { [key: string ]: any }}) => new Marker(marker)));
+  }
+}
+
+export { Marker };
+export default MultiMarkersPlayerBar;

src/parser/classes/PlayerOverlay.ts

@@ -3,6 +3,7 @@ import Menu from './menus/Menu';
 import Button from './Button';
 import WatchNextEndScreen from './WatchNextEndScreen';
 import PlayerOverlayAutoplay from './PlayerOverlayAutoplay';
+import type DecoratedPlayerBar from './DecoratedPlayerBar';
 
 import { YTNode } from '../helpers';
 
@@ -16,6 +17,7 @@ class PlayerOverlay extends YTNode {
   fullscreen_engagement;
   actions;
   browser_media_session;
+  decorated_player_bar;
 
   constructor(data: any) {
     super();
@@ -26,6 +28,7 @@ class PlayerOverlay extends YTNode {
     this.fullscreen_engagement = Parser.parse(data.fullscreenEngagement);
     this.actions = Parser.parseArray(data.actions);
     this.browser_media_session = Parser.parseItem(data.browserMediaSession);
+    this.decorated_player_bar = Parser.parseItem<DecoratedPlayerBar>(data.decoratedPlayerBarRenderer);
   }
 }
 

src/parser/classes/TimedMarkerDecoration.ts

@@ -0,0 +1,23 @@
+import Text from './misc/Text';
+import { YTNode } from '../helpers';
+
+class TimedMarkerDecoration extends YTNode {
+  static type = 'TimedMarkerDecoration';
+
+  visible_time_range_start_millis: number;
+  visible_time_range_end_millis: number;
+  decoration_time_millis: number;
+  label: Text;
+  icon: string;
+
+  constructor(data: any) {
+    super();
+    this.visible_time_range_start_millis = data.visibleTimeRangeStartMillis;
+    this.visible_time_range_end_millis = data.visibleTimeRangeEndMillis;
+    this.decoration_time_millis = data.decorationTimeMillis;
+    this.label = new Text(data.label);
+    this.icon = data.icon;
+  }
+}
+
+export default TimedMarkerDecoration;

src/parser/map.ts

@@ -39,6 +39,7 @@ import { default as ChannelMobileHeader } from './classes/ChannelMobileHeader';
 import { default as ChannelOptions } from './classes/ChannelOptions';
 import { default as ChannelThumbnailWithLink } from './classes/ChannelThumbnailWithLink';
 import { default as ChannelVideoPlayer } from './classes/ChannelVideoPlayer';
+import { default as Chapter } from './classes/Chapter';
 import { default as ChildVideo } from './classes/ChildVideo';
 import { default as ChipCloud } from './classes/ChipCloud';
 import { default as ChipCloudChip } from './classes/ChipCloudChip';
@@ -62,6 +63,7 @@ import { default as ConfirmDialog } from './classes/ConfirmDialog';
 import { default as ContinuationItem } from './classes/ContinuationItem';
 import { default as CopyLink } from './classes/CopyLink';
 import { default as CreatePlaylistDialog } from './classes/CreatePlaylistDialog';
+import { default as DecoratedPlayerBar } from './classes/DecoratedPlayerBar';
 import { default as DefaultPromoPanel } from './classes/DefaultPromoPanel';
 import { default as DidYouMean } from './classes/DidYouMean';
 import { default as DownloadButton } from './classes/DownloadButton';
@@ -85,6 +87,8 @@ import { default as GridChannel } from './classes/GridChannel';
 import { default as GridHeader } from './classes/GridHeader';
 import { default as GridPlaylist } from './classes/GridPlaylist';
 import { default as GridVideo } from './classes/GridVideo';
+import { default as Heatmap } from './classes/Heatmap';
+import { default as HeatMarker } from './classes/HeatMarker';
 import { default as HighlightsCarousel } from './classes/HighlightsCarousel';
 import { default as HistorySuggestion } from './classes/HistorySuggestion';
 import { default as HorizontalCardList } from './classes/HorizontalCardList';
@@ -161,6 +165,7 @@ import { default as MicroformatData } from './classes/MicroformatData';
 import { default as Mix } from './classes/Mix';
 import { default as Movie } from './classes/Movie';
 import { default as MovingThumbnail } from './classes/MovingThumbnail';
+import { default as MultiMarkersPlayerBar } from './classes/MultiMarkersPlayerBar';
 import { default as MusicCarouselShelf } from './classes/MusicCarouselShelf';
 import { default as MusicCarouselShelfBasicHeader } from './classes/MusicCarouselShelfBasicHeader';
 import { default as MusicDescriptionShelf } from './classes/MusicDescriptionShelf';
@@ -269,6 +274,7 @@ import { default as ThumbnailOverlayResumePlayback } from './classes/ThumbnailOv
 import { default as ThumbnailOverlaySidePanel } from './classes/ThumbnailOverlaySidePanel';
 import { default as ThumbnailOverlayTimeStatus } from './classes/ThumbnailOverlayTimeStatus';
 import { default as ThumbnailOverlayToggleButton } from './classes/ThumbnailOverlayToggleButton';
+import { default as TimedMarkerDecoration } from './classes/TimedMarkerDecoration';
 import { default as TitleAndButtonListHeader } from './classes/TitleAndButtonListHeader';
 import { default as ToggleButton } from './classes/ToggleButton';
 import { default as ToggleMenuServiceItem } from './classes/ToggleMenuServiceItem';
@@ -331,6 +337,7 @@ export const YTNodes = {
   ChannelOptions,
   ChannelThumbnailWithLink,
   ChannelVideoPlayer,
+  Chapter,
   ChildVideo,
   ChipCloud,
   ChipCloudChip,
@@ -354,6 +361,7 @@ export const YTNodes = {
   ContinuationItem,
   CopyLink,
   CreatePlaylistDialog,
+  DecoratedPlayerBar,
   DefaultPromoPanel,
   DidYouMean,
   DownloadButton,
@@ -377,6 +385,8 @@ export const YTNodes = {
   GridHeader,
   GridPlaylist,
   GridVideo,
+  Heatmap,
+  HeatMarker,
   HighlightsCarousel,
   HistorySuggestion,
   HorizontalCardList,
@@ -453,6 +463,7 @@ export const YTNodes = {
   Mix,
   Movie,
   MovingThumbnail,
+  MultiMarkersPlayerBar,
   MusicCarouselShelf,
   MusicCarouselShelfBasicHeader,
   MusicDescriptionShelf,
@@ -561,6 +572,7 @@ export const YTNodes = {
   ThumbnailOverlaySidePanel,
   ThumbnailOverlayTimeStatus,
   ThumbnailOverlayToggleButton,
+  TimedMarkerDecoration,
   TitleAndButtonListHeader,
   ToggleButton,
   ToggleMenuServiceItem,

test/main.test.ts

@@ -19,10 +19,27 @@ describe('YouTube.js Tests', () => {
       expect(info.basic_info.id).toBe(VIDEOS[0].ID);
     });
 
-    it('should have captions on full video info', async () => {
+    it('should have captions', () => {
       expect(info.captions?.caption_tracks.length).toBeGreaterThan(0);
     });
 
+    it('should have chapters', () => {
+      const markers_map = info.player_overlays?.decorated_player_bar?.player_bar?.markers_map;
+      
+      const chapters = (
+        markers_map?.get({ marker_key: 'AUTO_CHAPTERS' }) ||
+        markers_map?.get({ marker_key: 'DESCRIPTION_CHAPTERS' })
+      )?.value?.chapters;
+
+      expect(chapters).toBeDefined();
+    });
+
+    it('should have heatmap', () => {
+      const markers_map = info.player_overlays?.decorated_player_bar?.player_bar?.markers_map;
+      const heatmap = markers_map?.get({ marker_key: 'HEATSEEKER' })?.value?.heatmap;
+      expect(heatmap).toBeDefined();
+    });
+
     it('should retrieve basic video info', async () => {
       const b_info = await yt.getBasicInfo(VIDEOS[0].ID);
       expect(b_info.basic_info.id).toBe(VIDEOS[0].ID);
@@ -114,9 +131,6 @@ describe('YouTube.js Tests', () => {
 
       const filtered_list = await videos_tab.applyFilter('Popular');
       expect(filtered_list.videos.length).toBeGreaterThan(0);
-
-      const search = await channel.search('e-ink');
-      expect(search.videos.length).toBeGreaterThan(0);
     });
 
     it('should retrieve home feed', async () => {