feat(Channel): add support for sorting the playlist tab (#295)

README.md

@@ -482,8 +482,13 @@ Retrieves contents for a given channel.
 - `<channel>#getChannels()`
 - `<channel>#getAbout()`
 - `<channel>#search(query)`
+- `<channel>#applyFilter(filter)`
+- `<channel>#applyContentTypeFilter(content_type_filter)`
+- `<channel>#applySort(sort)`
 - `<channel>#getContinuation()`
 - `<channel>#filters`
+- `<channel>#content_type_filters`
+- `<channel>#sort_filters`
 - `<channel>#page`
 
 </p>

src/parser/classes/ChannelSubMenu.ts

@@ -0,0 +1,27 @@
+import Parser from '..';
+import NavigationEndpoint from './NavigationEndpoint';
+import { YTNode } from '../helpers';
+
+class ChannelSubMenu extends YTNode {
+  static type = 'ChannelSubMenu';
+
+  content_type_sub_menu_items: {
+    endpoint: NavigationEndpoint;
+    selected: boolean;
+    title: string;
+  }[];
+
+  sort_setting;
+
+  constructor(data: any) {
+    super();
+    this.content_type_sub_menu_items = data.contentTypeSubMenuItems.map((item: any) => ({
+      endpoint: new NavigationEndpoint(item.navigationEndpoint || item.endpoint),
+      selected: item.selected,
+      title: item.title
+    }));
+    this.sort_setting = Parser.parseItem(data.sortSetting);
+  }
+}
+
+export default ChannelSubMenu;

src/parser/classes/SectionList.ts

@@ -8,6 +8,7 @@ class SectionList extends YTNode {
   contents;
   continuation?: string;
   header;
+  sub_menu;
 
   constructor(data: any) {
     super();
@@ -29,6 +30,10 @@ class SectionList extends YTNode {
     if (data.header) {
       this.header = Parser.parse(data.header);
     }
+
+    if (data.subMenu) {
+      this.sub_menu = Parser.parseItem(data.subMenu);
+    }
   }
 }
 

src/parser/classes/SortFilterSubMenu.ts

@@ -41,7 +41,7 @@ class SortFilterSubMenu extends YTNode {
         title: item.title,
         selected: item.selected,
         continuation: item.continuation?.reloadContinuationData?.continuation,
-        endpoint: new NavigationEndpoint(item.serviceEndpoint),
+        endpoint: new NavigationEndpoint(item.serviceEndpoint || item.navigationEndpoint),
         subtitle: item.subtitle || null
       }));
     }

src/parser/map.ts

@@ -37,6 +37,7 @@ import { default as ChannelHeaderLinks } from './classes/ChannelHeaderLinks';
 import { default as ChannelMetadata } from './classes/ChannelMetadata';
 import { default as ChannelMobileHeader } from './classes/ChannelMobileHeader';
 import { default as ChannelOptions } from './classes/ChannelOptions';
+import { default as ChannelSubMenu } from './classes/ChannelSubMenu';
 import { default as ChannelThumbnailWithLink } from './classes/ChannelThumbnailWithLink';
 import { default as ChannelVideoPlayer } from './classes/ChannelVideoPlayer';
 import { default as Chapter } from './classes/Chapter';
@@ -354,6 +355,7 @@ export const YTNodes = {
   ChannelMetadata,
   ChannelMobileHeader,
   ChannelOptions,
+  ChannelSubMenu,
   ChannelThumbnailWithLink,
   ChannelVideoPlayer,
   Chapter,

src/parser/youtube/Channel.ts

@@ -7,13 +7,17 @@ import ChannelMetadata from '../classes/ChannelMetadata';
 import InteractiveTabbedHeader from '../classes/InteractiveTabbedHeader';
 import MicroformatData from '../classes/MicroformatData';
 import SubscribeButton from '../classes/SubscribeButton';
+import ExpandableTab from '../classes/ExpandableTab';
+import SectionList from '../classes/SectionList';
 import Tab from '../classes/Tab';
 
 import Feed from '../../core/Feed';
 import FilterableFeed from '../../core/FilterableFeed';
 import ChipCloudChip from '../classes/ChipCloudChip';
-import ExpandableTab from '../classes/ExpandableTab';
 import FeedFilterChipBar from '../classes/FeedFilterChipBar';
+import ChannelSubMenu from '../classes/ChannelSubMenu';
+import SortFilterSubMenu from '../classes/SortFilterSubMenu';
+
 import { InnertubeError } from '../../utils/Utils';
 
 import type { AppendContinuationItemsAction, ReloadContinuationItemsCommand } from '..';
@@ -49,7 +53,7 @@ export default class Channel extends TabbedFeed {
   async applyFilter(filter: string | ChipCloudChip): Promise<FilteredChannelList> {
     let target_filter: ChipCloudChip | undefined;
 
-    const filter_chipbar = this.memo.getType(FeedFilterChipBar)?.[0];
+    const filter_chipbar = this.memo.getType(FeedFilterChipBar).first();
 
     if (typeof filter === 'string') {
       target_filter = filter_chipbar?.contents.get({ text: filter });
@@ -63,13 +67,70 @@ export default class Channel extends TabbedFeed {
       throw new InnertubeError('Invalid filter', filter);
 
     const page = await target_filter.endpoint?.call(this.actions, { parse: true });
+
     return new FilteredChannelList(this.actions, page, true);
   }
 
+  /**
+   * Applies given sort filter to the list. Use {@link sort_filters} to get available filters.
+   * @param sort - The sort filter to apply
+   */
+  async applySort(sort: string): Promise<Channel> {
+    const sort_filter_sub_menu = this.memo.getType(SortFilterSubMenu).first();
+
+    if (!sort_filter_sub_menu)
+      throw new InnertubeError('No sort filter sub menu found');
+
+    const target_sort = sort_filter_sub_menu?.sub_menu_items?.find((item) => item.title === sort);
+
+    if (!target_sort)
+      throw new InnertubeError(`Sort filter ${sort} not found`, { available_sort_filters: this.sort_filters });
+
+    if (target_sort.selected)
+      return this;
+
+    const page = await target_sort.endpoint?.call(this.actions, { parse: true });
+
+    return new Channel(this.actions, page, true);
+  }
+
+  /**
+   * Applies given content type filter to the list. Use {@link content_type_filters} to get available filters.
+   * @param content_type_filter - The content type filter to apply
+   */
+  async applyContentTypeFilter(content_type_filter: string): Promise<Channel> {
+    const sub_menu = this.current_tab?.content?.as(SectionList).sub_menu?.as(ChannelSubMenu);
+
+    if (!sub_menu)
+      throw new InnertubeError('Sub menu not found');
+
+    const item = sub_menu.content_type_sub_menu_items.find((item) => item.title === content_type_filter);
+
+    if (!item)
+      throw new InnertubeError(`Sub menu item ${content_type_filter} not found`, { available_filters: this.content_type_filters });
+
+    if (item.selected)
+      return this;
+
+    const page = await item.endpoint?.call(this.actions, { parse: true });
+
+    return new Channel(this.actions, page, true);
+  }
+
   get filters(): string[] {
     return this.memo.getType(FeedFilterChipBar)?.[0]?.contents.filterType(ChipCloudChip).map((chip) => chip.text) || [];
   }
 
+  get sort_filters(): string[] {
+    const sort_filter_sub_menu = this.memo.getType(SortFilterSubMenu).first();
+    return sort_filter_sub_menu?.sub_menu_items?.map((item) => item.title) || [];
+  }
+
+  get content_type_filters(): string[] {
+    const sub_menu = this.current_tab?.content?.as(SectionList).sub_menu?.as(ChannelSubMenu);
+    return sub_menu?.content_type_sub_menu_items.map((item) => item.title) || [];
+  }
+
   async getHome(): Promise<Channel> {
     const tab = await this.getTabByURL('featured');
     return new Channel(this.actions, tab.page, true);