Support YouTube playlist

src/discord/MusicPlayer/Play.ts

@@ -256,6 +256,17 @@ export default class Play {
 
         if (DiscordMusicPlayer.isYouTubeLink(query)) {
             let linkData = DiscordMusicPlayer.parseYouTubeLink(query);
+
+            if(linkData.videoId === "" && linkData.list) {
+                let playlist = await DiscordMusicPlayer.getYouTubeSongsInPlayList(query);
+                const songs = await playlist.all_videos();
+
+                for(let song of songs) {
+                    instance.addTrackToQueue(song);
+                }
+                return await sendMessageOrInteractionResponse(data, { embeds: [EMBEDS.ADDED_SONGS_QUEUE(data, songs)] }, true);
+            }
+
             let result = await DiscordMusicPlayer.searchYouTubeByYouTubeLink(linkData);
 
             if (!result) return;

src/providers/DiscordMusicPlayer.ts

@@ -303,7 +303,9 @@ class DiscordMusicPlayer {
     }
 
     public async getYouTubeSongsInPlayList(youtubeLink: string) {
-        return await playdl.playlist_info(youtubeLink);
+        return await playdl.playlist_info(youtubeLink, {
+            incomplete: true
+        });
     }
 
     public isYouTubeLink(link: string): boolean {
@@ -336,6 +338,13 @@ class DiscordMusicPlayer {
                 videoId: videoId
             }
         }
+        else if (query.startsWith('https://www.youtube.com/playlist?list=') || query.startsWith('http://www.youtube.com/playlist?list=')) {
+            let listId = query.split('?list=')[1];
+            return {
+                videoId: "",
+                list: listId
+            }
+        }
         else {
             throw new Error('YouTube link is invalid');
         }