[yandexmusic] Add support for multi disk albums and extract track number and disk number (closes #21420) (#21421)

* [yandexmusic] extract tracks from all volumes of an album (closes #21420)

* [yandexmusic] extract genre, disk_number and track_number

* [yandexmusic] extract decomposed artist names

* Update yandexmusic.py

* Update yandexmusic.py

* Update yandexmusic.py

youtube_dl/extractor/yandexmusic.py

@@ -51,23 +51,43 @@ class YandexMusicTrackIE(YandexMusicBaseIE):
     IE_DESC = 'Яндекс.Музыка - Трек'
     _VALID_URL = r'https?://music\.yandex\.(?:ru|kz|ua|by)/album/(?P<album_id>\d+)/track/(?P<id>\d+)'
 
-    _TEST = {
+    _TESTS = [{
         'url': 'http://music.yandex.ru/album/540508/track/4878838',
         'md5': 'f496818aa2f60b6c0062980d2e00dc20',
         'info_dict': {
             'id': '4878838',
             'ext': 'mp3',
-            'title': 'Carlo Ambrosio, Carlo Ambrosio & Fabio Di Bari - Gypsy Eyes 1',
+            'title': 'Carlo Ambrosio & Fabio Di Bari - Gypsy Eyes 1',
             'filesize': 4628061,
             'duration': 193.04,
             'track': 'Gypsy Eyes 1',
             'album': 'Gypsy Soul',
             'album_artist': 'Carlo Ambrosio',
-            'artist': 'Carlo Ambrosio, Carlo Ambrosio & Fabio Di Bari',
+            'artist': 'Carlo Ambrosio & Fabio Di Bari',
             'release_year': 2009,
         },
         'skip': 'Travis CI servers blocked by YandexMusic',
-    }
+    }, {
+        # multiple disks
+        'url': 'http://music.yandex.ru/album/3840501/track/705105',
+        'md5': 'ebe7b4e2ac7ac03fe11c19727ca6153e',
+        'info_dict': {
+            'id': '705105',
+            'ext': 'mp3',
+            'title': 'Hooverphonic - Sometimes',
+            'filesize': 5743386,
+            'duration': 239.27,
+            'track': 'Sometimes',
+            'album': 'The Best of Hooverphonic',
+            'album_artist': 'Hooverphonic',
+            'artist': 'Hooverphonic',
+            'release_year': 2016,
+            'genre': 'pop',
+            'disc_number': 2,
+            'track_number': 9,
+        },
+        'skip': 'Travis CI servers blocked by YandexMusic',
+    }]
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
@@ -110,9 +130,21 @@ def _real_extract(self, url):
             'abr': int_or_none(download_data.get('bitrate')),
         }
 
+        def extract_artist_name(artist):
+            decomposed = artist.get('decomposed')
+            if not isinstance(decomposed, list):
+                return artist['name']
+            parts = [artist['name']]
+            for element in decomposed:
+                if isinstance(element, dict) and element.get('name'):
+                    parts.append(element['name'])
+                elif isinstance(element, compat_str):
+                    parts.append(element)
+            return ''.join(parts)
+
         def extract_artist(artist_list):
             if artist_list and isinstance(artist_list, list):
-                artists_names = [a['name'] for a in artist_list if a.get('name')]
+                artists_names = [extract_artist_name(a) for a in artist_list if a.get('name')]
                 if artists_names:
                     return ', '.join(artists_names)
 
@@ -121,10 +153,17 @@ def extract_artist(artist_list):
             album = albums[0]
             if isinstance(album, dict):
                 year = album.get('year')
+                disc_number = int_or_none(try_get(
+                    album, lambda x: x['trackPosition']['volume']))
+                track_number = int_or_none(try_get(
+                    album, lambda x: x['trackPosition']['index']))
                 track_info.update({
                     'album': album.get('title'),
                     'album_artist': extract_artist(album.get('artists')),
                     'release_year': int_or_none(year),
+                    'genre': album.get('genre'),
+                    'disc_number': disc_number,
+                    'track_number': track_number,
                 })
 
         track_artist = extract_artist(track.get('artists'))
@@ -152,7 +191,7 @@ class YandexMusicAlbumIE(YandexMusicPlaylistBaseIE):
     IE_DESC = 'Яндекс.Музыка - Альбом'
     _VALID_URL = r'https?://music\.yandex\.(?:ru|kz|ua|by)/album/(?P<id>\d+)/?(\?|$)'
 
-    _TEST = {
+    _TESTS = [{
         'url': 'http://music.yandex.ru/album/540508',
         'info_dict': {
             'id': '540508',
@@ -160,7 +199,15 @@ class YandexMusicAlbumIE(YandexMusicPlaylistBaseIE):
         },
         'playlist_count': 50,
         'skip': 'Travis CI servers blocked by YandexMusic',
-    }
+    }, {
+        'url': 'https://music.yandex.ru/album/3840501',
+        'info_dict': {
+            'id': '3840501',
+            'title': 'Hooverphonic - The Best of Hooverphonic (2016)',
+        },
+        'playlist_count': 33,
+        'skip': 'Travis CI servers blocked by YandexMusic',
+    }]
 
     def _real_extract(self, url):
         album_id = self._match_id(url)
@@ -169,7 +216,7 @@ def _real_extract(self, url):
             'http://music.yandex.ru/handlers/album.jsx?album=%s' % album_id,
             album_id, 'Downloading album JSON')
 
-        entries = self._build_playlist(album['volumes'][0])
+        entries = self._build_playlist([track for volume in album['volumes'] for track in volume])
 
         title = '%s - %s' % (album['artists'][0]['name'], album['title'])
         year = album.get('year')