From b175e02f6dc7d283b383ae592a623212bd06e5e9 Mon Sep 17 00:00:00 2001
From: "luan.lrt4@gmail.com" <luan.lrt4@gmail.com>
Date: Fri, 22 Apr 2022 00:27:03 -0300
Subject: [PATCH] chore: oops

---
 lib/Innertube.js | 45 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 43 insertions(+), 2 deletions(-)

diff --git a/lib/Innertube.js b/lib/Innertube.js
index c9519dad..154df216 100644
--- a/lib/Innertube.js
+++ b/lib/Innertube.js
@@ -237,7 +237,7 @@ class Innertube {
        * Deletes a given playlist.
        * 
        * @param {string} playlist_id
-       * @returns {Promise<{ success: boolean; status_code: string; }>} 
+       * @returns {Promise.<{ success: boolean; status_code: string; }>} 
        */
       delete: (playlist_id) => Actions.engage(this, 'playlist/delete', { playlist_id }),
 
@@ -553,6 +553,47 @@ class Innertube {
     return response.data.unseenCount;
   }
 
+  /**
+   * Retrieves lyrics for a given song if available.
+   * 
+   * @param {string} video_id 
+   * @returns {Promise.<string>} Song lyrics
+   */
+  async getLyrics(video_id) {
+    const continuation = await Actions.next(this, { video_id: video_id, ytmusic: true });
+    if (!continuation.success) throw new Utils.InnertubeError('Could not retrieve lyrics', continuation);
+
+    const lyrics_tab = Utils.findNode(continuation, 'contents',  'Lyrics', 8, false);
+    
+    const response = await Actions.browse(this, 'lyrics', { ytmusic: true, browse_id: lyrics_tab.endpoint?.browseEndpoint.browseId });
+    if (!response.success || !response.data?.contents?.sectionListRenderer) throw new Utils.UnavailableContentError('Lyrics not available', { video_id });
+    
+    const lyrics = Utils.findNode(response.data, 'contents', 'runs', 6, false);
+    return lyrics.runs[0].text;
+  }
+
+  /**
+   * Parses a given playlist.
+   * 
+   * @param {string} playlist_id - The id of the playlist.
+   * @param {object} options - { client: YOUTUBE | YTMUSIC }
+   * @param {string} options.client - Client used to parse the playlist, can be: `YTMUSIC` | `YOUTUBE`
+   * @returns {Promise.<
+   *  { title: string; description: string; total_items: string; last_updated: string; views: string; items: [] } |
+   *  { title: string; description: string; total_items: number; duration: string; year: string; items: [] }>}
+   */
+  async getPlaylist(playlist_id, options = { client: 'YOUTUBE' }) {
+    const response = await Actions.browse(this, options.client == 'YTMUSIC' ? 'music_playlist' : 'playlist', { ytmusic: options.client == 'YTMUSIC', browse_id: `VL${playlist_id}` });
+    if (!response.success) throw new Utils.InnertubeError('Could not get playlist', response);
+    
+    const playlist = new Parser(this, response.data, {
+      client: options.client, 
+      data_type: 'PLAYLIST'
+    }).parse();
+    
+    return playlist;
+  }
+
   /**
    * Internal method to process and filter formats.
    * 
@@ -795,4 +836,4 @@ class Innertube {
   }
 }
 
-module.exports = Innertube;
+module.exports = Innertube;
\ No newline at end of file