[yamusic] Improve, simplify, fix python3 issues and add tests

youtube_dl/extractor/yamusic.py

@@ -3,102 +3,126 @@ from __future__ import unicode_literals
 
 import re
 import hashlib
-import time
 
 from .common import InfoExtractor
+from ..compat import compat_str
+from ..utils import (
+    int_or_none,
+    float_or_none,
+)
 
-class YandexMusicAlbumIE(InfoExtractor):
-    _VALID_URL = r'http://music.yandex.ru/album/(?P<id>\d+)'
 
+class YandexMusicBaseIE(InfoExtractor):
     def _get_track_url(self, storage_dir, track_id):
-        data = self._download_json('http://music.yandex.ru/api/v1.5/handlers/api-jsonp.jsx?requestId=2&nc=%d&action=getTrackSrc&p=download-info/%s/2.mp3' % (time.time(), storage_dir), track_id)
+        data = self._download_json(
+            'http://music.yandex.ru/api/v1.5/handlers/api-jsonp.jsx?action=getTrackSrc&p=download-info/%s'
+            % storage_dir,
+            track_id, 'Downloading track location JSON')
 
-        hsh = hashlib.md5()
-        hsh.update('XGRlBW9FXlekgbPrRHuSiA' + data['path'][1:] + data['s'])
-        hash = hsh.hexdigest()
+        key = hashlib.md5(('XGRlBW9FXlekgbPrRHuSiA' + data['path'][1:] + data['s']).encode('utf-8')).hexdigest()
         storage = storage_dir.split('.')
 
-        return 'http://%s/get-mp3/%s/%s?track-id=%s&from=service-10-track&similarities-experiment=default' % (data['host'], hash, data['ts'] + data['path'], storage[1])
+        return ('http://%s/get-mp3/%s/%s?track-id=%s&from=service-10-track&similarities-experiment=default'
+                % (data['host'], key, data['ts'] + data['path'], storage[1]))
 
-    def _get_album_id_and_data(self, url):
-        matched = re.match(self._VALID_URL, url)
-        id = matched.group('id')
+    def _get_track_info(self, track):
+        return {
+            'id': track['id'],
+            'ext': 'mp3',
+            'url': self._get_track_url(track['storageDir'], track['id']),
+            'title': '%s - %s' % (track['artists'][0]['name'], track['title']),
+            'filesize': int_or_none(track.get('fileSize')),
+            'duration': float_or_none(track.get('durationMs'), 1000),
+        }
 
-        webpage = self._download_webpage(url, id)
-        data = self._parse_json(
-            self._search_regex(
-                r'var\s+Mu\s+=\s+(.+?);\s+<\/script>', webpage, 'player'),
-            id)
-        return id, data['pageData']
+
+class YandexMusicTrackIE(YandexMusicBaseIE):
+    IE_NAME = 'yandexmusic:track'
+    IE_DESC = 'Яндекс.Музыка - Трек'
+    _VALID_URL = r'https?://music\.yandex\.ru/album/(?P<album_id>\d+)/track/(?P<id>\d+)'
+
+    _TEST = {
+        'url': 'http://music.yandex.ru/album/540508/track/4878838',
+        'md5': 'f496818aa2f60b6c0062980d2e00dc20',
+        'info_dict': {
+            'id': '4878838',
+            'ext': 'mp3',
+            'title': 'Carlo Ambrosio - Gypsy Eyes 1',
+            'filesize': 4628061,
+            'duration': 193.04,
+        }
+    }
 
     def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        album_id, track_id = mobj.group('album_id'), mobj.group('id')
 
-        id, data = self._get_album_id_and_data(url)
+        track = self._download_json(
+            'http://music.yandex.ru/handlers/track.jsx?track=%s:%s' % (track_id, album_id),
+            track_id, 'Downloading track JSON')['track']
 
-        entries = []
+        return self._get_track_info(track)
 
-        for track in data['volumes'][0]:
-            entries.append({
-                'id': track['id'],
-                'ext': 'mp3',
-                'url': self._get_track_url(track['storageDir'], track['id']),
-                'title': track['artists'][0]['name'] + ' - ' + track['title'],
-            })
 
-        return {
-            '_type': 'playlist',
-            'entries': entries,
-            'id': id,
-            'title': data['title'],
-        }
+class YandexMusicAlbumIE(YandexMusicBaseIE):
+    IE_NAME = 'yandexmusic:album'
+    IE_DESC = 'Яндекс.Музыка - Альбом'
+    _VALID_URL = r'https?://music\.yandex\.ru/album/(?P<id>\d+)'
 
-class YandexMusicPlaylistIE(YandexMusicAlbumIE):
-    _VALID_URL = r'http://music.yandex.ru/users/(?P<user_name>[^/]+)/playlists/(?P<id>\d+)'
+    _TEST = {
+        'url': 'http://music.yandex.ru/album/540508',
+        'info_dict': {
+            'id': '540508',
+            'title': 'Carlo Ambrosio - Gypsy Soul (2009)',
+        },
+        'playlist_count': 50,
+    }
 
     def _real_extract(self, url):
-        id, data = self._get_album_id_and_data(url)
-        data = data['playlist']
+        album_id = self._match_id(url)
 
-        entries = []
+        album = self._download_json(
+            'http://music.yandex.ru/handlers/album.jsx?album=%s' % album_id,
+            album_id, 'Downloading album JSON')
 
-        for track in data['tracks']:
-            entries.append({
-                'id': track['id'],
-                'ext': 'mp3',
-                'url': self._get_track_url(track['storageDir'], track['id']),
-                'title': track['artists'][0]['name'] + ' - ' + track['title'],
-            })
+        entries = [self._get_track_info(track) for track in album['volumes'][0]]
+
+        title = '%s - %s' % (album['artists'][0]['name'], album['title'])
+        year = album.get('year')
+        if year:
+            title += ' (%s)' % year
+
+        return self.playlist_result(entries, compat_str(album['id']), title)
 
-        return {
-            '_type': 'playlist',
-            'entries': entries,
-            'id': id,
-            'title': data['title'],
-        }
 
-class YandexMusicTrackIE(YandexMusicAlbumIE):
-    _VALID_URL = r'http://music.yandex.ru/album/(?P<album_id>\d+)/track/(?P<id>\d+)'
+class YandexMusicPlaylistIE(YandexMusicBaseIE):
+    IE_NAME = 'yandexmusic:playlist'
+    IE_DESC = 'Яндекс.Музыка - Плейлист'
+    _VALID_URL = r'https?://music\.yandex\.ru/users/[^/]+/playlists/(?P<id>\d+)'
+
     _TEST = {
-        'url': 'http://music.yandex.ru/album/540508/track/4878838',
+        'url': 'http://music.yandex.ru/users/music.partners/playlists/1245',
         'info_dict': {
-            'id': '4878838',
-            'ext': 'mp3',
-            'title': 'Carlo Ambrosio - Gypsy Eyes 1',
-        }
+            'id': '1245',
+            'title': 'Что слушают Enter Shikari',
+            'description': 'md5:3b9f27b0efbe53f2ee1e844d07155cc9',
+        },
+        'playlist_count': 6,
     }
 
     def _real_extract(self, url):
+        playlist_id = self._match_id(url)
+
+        webpage = self._download_webpage(url, playlist_id)
 
-        id, data = self._get_album_id_and_data(url)
+        playlist = self._parse_json(
+            self._search_regex(
+                r'var\s+Mu\s*=\s*({.+?});\s*</script>', webpage, 'player'),
+            playlist_id)['pageData']['playlist']
 
-        for track in data['volumes'][0]:
-            if track['id'] == id:
-                track_url = self._get_track_url(track['storageDir'], id)
-                break
+        entries = [self._get_track_info(track) for track in playlist['tracks']]
+
+        return self.playlist_result(
+            entries, compat_str(playlist_id),
+            playlist['title'], playlist.get('description'))
 
-        return {
-            'id': id,
-            'ext': 'mp3',
-            'url': track_url,
-            'title': track['artists'][0]['name'] + ' - ' + track['title'],
-        }