parseTrackInfo(): handle urls without '/track'

lib/index.js

@@ -97,6 +97,7 @@ async function getAlbumInfo(albumUrl, options = {}) {
 async function getTrackInfo(trackUrl, options = {}) {
     const imageConstants = await _getImageConstants();
     const opts = {
+        trackUrl,
         imageBaseUrl: imageConstants.baseUrl,
         albumImageFormat: await _parseImageFormatArg(options.albumImageFormat, 9),
         artistImageFormat: await _parseImageFormatArg(options.artistImageFormat),

lib/parser.js

@@ -207,6 +207,19 @@ function parseAlbumInfo(html, opts) {
 }
 
 function parseTrackInfo(html, opts) {
+    // Some tracks don't have a dedicated '/track' url,
+    // but take this form instead: {albumUrl}#t{x}, where 'x' is the 
+    // track position. These tracks are not displayed as links nor playable.
+    // Since the album page is actually loaded, we can return the track info
+    // from the album data returned by parseAlbumInfo().
+    const { path: trackUrlPath, hash: trackUrlHash } = utils.splitUrl(opts.trackUrl);
+    if (trackUrlPath && trackUrlHash) {
+        const matchTrackPosInUrl = /^\/(album)\/(.+)#t(\d+)/.exec(trackUrlPath + trackUrlHash);
+        if (matchTrackPosInUrl && matchTrackPosInUrl[3]) {
+            return parseTrackInfoFromAlbum(html, opts, matchTrackPosInUrl[3]);
+        }
+    }
+
     const $ = cheerio.load(html);
     const rawBasic = $('script[type="application/ld+json"]').html();
     const rawExtra = decode($('script[data-tralbum]').attr('data-tralbum'));
@@ -250,6 +263,33 @@ function parseTrackInfo(html, opts) {
     }
 }
 
+function parseTrackInfoFromAlbum(html, opts, trackPosition) {
+console.log('parseTrackInfoFromAlbum: + ' + trackPosition);
+    const album = parseAlbumInfo(html, opts);
+    let trackData = album.tracks[trackPosition - 1] || {};
+    const track = {
+        type: 'track',
+        name: trackData.name,
+        url: trackData.url,
+        imageUrl: album.imageUrl,
+        releaseDate: album.releaseDate,
+        duration: trackData.duration,
+        streamUrl: trackData.streamUrl,
+        artist: {
+            name: album.artist.name,
+            url: album.artist.url,
+            description: album.artist.description,
+            imageUrl: album.artist.imageUrl
+        },
+        album: {
+            name: album.name,
+            url: album.url,
+            releaseDate: album.releaseDate
+        }
+    };
+    return track;
+}
+
 function parseDiscography(html, opts) {
     const $ = cheerio.load(html);
 

lib/utils.js

@@ -92,7 +92,8 @@ function splitUrl(url) {
     return {
         base: _url.protocol + '//' + _url.host,
         path: _url.pathname,
-        query: _url.search
+        query: _url.search,
+        hash: _url.hash
     };
 }