fix(meta): use correct total disc number count (#634)

README.md

@@ -50,22 +50,22 @@ Depending on the URLs you provide freyr, it will;
 
 Here's a list of the metadata that freyr can extract from each streaming service:
 
-|      Meta      | Spotify | Apple Music | Deezer |
-| :------------: | :-----: | :---------: | :----: |
-|    `Title`     |    ✔    |      ✔      |   ✔    |
-|    `Artist`    |    ✔    |      ✔      |   ✔    |
-|   `Composer`   |    ✗    |      ✔      |   ✔    |
-|    `Album`     |    ✔    |      ✔      |   ✔    |
-|    `Genre`     |    ✗    |      ✔      |   ✔    |
-| `Track Number` |    ✔    |      ✔      |   ✔    |
-| `Disk Number`  |    ✔    |      ✔      |   ✔    |
-| `Release Date` |    ✔    |      ✔      |   ✔    |
-|    `Rating`    |    ✔    |      ✔      |   ✔    |
-| `Album Artist` |    ✔    |      ✔      |   ✔    |
-|     `ISRC`     |    ✔    |      ✔      |   ✔    |
-|    `Label`     |    ✔    |      ✔      |   ✔    |
-|  `Copyright`   |    ✔    |      ✔      |   ✗    |
-|  `Cover Art`   |    ✔    |      ✔      |   ✔    |
+|      Meta      | Spotify | Apple Music |      Deezer       |
+| :------------: | :-----: | :---------: | :---------------: |
+|    `Title`     |    ✔    |      ✔      |        ✔          |
+|    `Artist`    |    ✔    |      ✔      |        ✔          |
+|   `Composer`   |    ✗    |      ✔      |        ✔          |
+|    `Album`     |    ✔    |      ✔      |        ✔          |
+|    `Genre`     |    ✗    |      ✔      |        ✔          |
+| `Track Number` |    ✔    |      ✔      |        ✔          |
+| `Disk Number`  |    ✔    |      ✔      |   ✔ (no total)    |
+| `Release Date` |    ✔    |      ✔      |        ✔          |
+|    `Rating`    |    ✔    |      ✔      |        ✔          |
+| `Album Artist` |    ✔    |      ✔      |        ✔          |
+|     `ISRC`     |    ✔    |      ✔      |        ✔          |
+|    `Label`     |    ✔    |      ✔      |        ✔          |
+|  `Copyright`   |    ✔    |      ✔      |        ✗          |
+|  `Cover Art`   |    ✔    |      ✔      |        ✔          |
 
 ## Support the project
 

cli.js

@@ -1108,7 +1108,7 @@ async function init(packageJson, queries, options) {
           album: track.album, // ©alb
           genre: (genre => (genre ? genre.concat(' ') : ''))((track.genres || [])[0]), // ©gen | gnre
           tracknum: `${track.track_number}/${track.total_tracks}`, // trkn
-          disk: `${track.disc_number}/${track.disc_number}`, // disk
+          disk: `${track.disc_number}${track.total_discs ? `/${track.total_discs}` : ''}`, // disk
           year: new Date(track.release_date).toISOString().split('T')[0], // ©day
           compilation: track.compilation, // ©cpil
           gapless: options.gapless ?? false, // pgap

src/services/apple_music.js

@@ -167,6 +167,7 @@ export default class AppleMusic {
       total_tracks: albumInfo.ntracks,
       release_date: albumInfo.release_date,
       disc_number: trackInfo.attributes.discNumber,
+      total_discs: albumInfo.tracks.reduce((acc, track) => Math.max(acc, track.attributes.discNumber), 1),
       contentRating: trackInfo.attributes.contentRating,
       isrc: trackInfo.attributes.isrc,
       genres: trackInfo.attributes.genreNames,

src/services/spotify.js

@@ -153,6 +153,7 @@ export default class Spotify {
           total_tracks: albumInfo.ntracks,
           release_date: albumInfo.release_date,
           disc_number: trackInfo.disc_number,
+          total_discs: albumInfo.tracks.reduce((acc, track) => Math.max(acc, track.disc_number), 1),
           contentRating: trackInfo.explicit === true ? 'explicit' : 'inoffensive',
           isrc: (trackInfo.external_ids || {}).isrc,
           genres: albumInfo.genres,