app/browse/innertube.py

   1 # functions that deal with parsing data from youtube's internal API ("innertube")
   2
   3 from ..common.common import mkthumbs, log_unknown_card, G
   4
   5 class Select:
   6     """ |Select('foo') returns the first foo in list, |Select(all='foo') returns all foos. """
   7     def __init__(self, key=None, *, all=None):
   8         self.key = key or all
   9         self.all = all
  10     def __ror__(self, other):
  11         try: items = [ other[self.key] for other in other if self.key in other.keys() ]
  12         except: items = []
  13         return items if self.all else items|G(0)
  14 class A:
  15     """ apply """
  16     def __init__(self, f, *args):
  17         self.f = f
  18         self.args = args
  19     def __ror__(self, other):
  20         return self.f(other, *self.args)
  21     class _Int:
  22         def __ror__(self, other):
  23             try:    return int(''.join(filter(str.isdigit, other)))
  24             except: return None
  25     int = _Int()
  26
  27
  28 def prepare_searchresults(yt_results):
  29     contents = ( # from continuation token
  30         yt_results
  31         |G('onResponseReceivedCommands')
  32         |Select('appendContinuationItemsAction')
  33         |G('continuationItems')
  34     ) or ( # from page 1
  35         yt_results
  36         |G('contents')
  37         |G('twoColumnSearchResultsRenderer')
  38         |G('primaryContents')
  39         |G('sectionListRenderer')
  40         |G('contents')
  41     )
  42     items = contents|Select('itemSectionRenderer')|G('contents')
  43     items, extra = parse_result_items(items)
  44     more = contents|Select("continuationItemRenderer")|G("continuationEndpoint")|G("continuationCommand")|G("token")
  45     estimatedResults = yt_results|G("estimatedResults")
  46
  47     return items, extra, more
  48
  49 def prepare_channel(response, channel_id, channel_name):
  50     meta1 = response|G('metadata')|G('channelMetadataRenderer')
  51     meta2 = response|G('microformat')|G('microformatDataRenderer')
  52     title = meta1|G('title') or meta2|G('title') or channel_name
  53     descr = meta1|G('description') or meta2|G('description') # meta2.description is capped at 160chars
  54     thumb = mkthumbs((meta2|G('thumbnail') or meta1|G('avatar'))|G('thumbnails') or {}) # .avatar ~ 900px
  55
  56     contents = (
  57         response|G('continuationContents') or
  58         response|G('onResponseReceivedActions')
  59     )
  60     if not contents: # overran end of list
  61         return title, descr, thumb, [], False
  62
  63     unparsed = contents|G('gridContinuation')|G('items') or \
  64             contents|G('sectionListContinuation')|G('contents') or \
  65             contents|G('richGridContinuation')|G('contents') or \
  66             contents|Select('appendContinuationItemsAction')|G('continuationItems') or \
  67             contents|G(-1)|G('reloadContinuationItemsCommand')|G('continuationItems') or []
  68     items, extra = parse_channel_items(unparsed, channel_id, title)
  69
  70     more = ( # videos, livestreams
  71         unparsed
  72         |Select('continuationItemRenderer')
  73         |G('continuationEndpoint')
  74         |G('continuationCommand')
  75         |G('token')
  76     ) or ( # playlists, search
  77         contents
  78         |G('gridContinuation', 'sectionListContinuation')
  79         |G('continuations')
  80         |Select('nextContinuationData')
  81         |G('continuation')
  82     )
  83
  84     return title, descr, thumb, items, more
  85
  86 def prepare_playlist(result):
  87     contents = result['continuationContents']
  88     unparsed = contents['playlistVideoListContinuation'].get('contents',[])
  89     more = (
  90         contents
  91         |G('playlistVideoListContinuation')
  92         |G('continuations')
  93         |Select('nextContinuationData')
  94         |G('continuation')
  95     )
  96
  97     meta = result|G('sidebar')|G('playlistSidebarRenderer')|G('items')
  98     meta1 = meta|Select('playlistSidebarPrimaryInfoRenderer')
  99     meta2 = meta|Select('playlistSidebarSecondaryInfoRenderer') \
 100         |G('videoOwner')|G('videoOwnerRenderer')
 101     title = meta1|G('title')|G.text
 102     author = meta2|G('title')|G.text
 103     channel_id = meta2|G('navigationEndpoint')|G('browseEndpoint')|G('browseId')
 104
 105     return title, author, channel_id, list(filter(None, map(parse_playlist, unparsed))), more
 106
 107 def age(s):
 108     if s is None: # missing from autogen'd music, some livestreams
 109         return None
 110     # Some livestreams have "Streamed 7 hours ago"
 111     s = s.replace("Streamed ","")
 112     # Now, everything should be in the form "1 year ago"
 113     value, unit, _ = s.split(" ")
 114     suffix = dict(
 115         minute='min',
 116         minutes='min',
 117     ).get(unit, unit[0]) # first letter otherwise (e.g. year(s) => y)
 118
 119     return f"{value}{suffix}"
 120
 121 def parse_result_items(items):
 122     # TODO: use .get() for most non-essential attributes
 123     """
 124     parses youtube search response into an easier to use format.
 125     """
 126     results = []
 127     extras = []
 128     for item in items:
 129         key = next(iter(item.keys()), None)
 130         content = item[key]
 131         if key in ['videoRenderer', 'reelItemRenderer', 'gridVideoRenderer']:
 132             results.append({'type': 'VIDEO', 'content': {
 133                 'video_id': content['videoId'],
 134                 'title': content|G('title')|G.text or content|G('headline')|G.text,
 135                 'author': content|G('longBylineText','shortBylineText')|G.text,
 136                 'channel_id': content|G('ownerText')|G('runs')|G(0) \
 137                     |G('navigationEndpoint')|G('browseEndpoint')|G('browseId') \
 138                     or content|G("channelThumbnailSupportedRenderers")| \
 139                     G("channelThumbnailWithLinkRenderer")|G("navigationEndpoint")| \
 140                     G("browseEndpoint")|G("browseId"),
 141                 'length': content|G('lengthText')|G.text, # "44:07", "1:41:50"
 142                 'views': content|G('viewCountText')|G.text|A.int or 0, # "1,234 {views|watching}", absent on 0 views
 143                 'published': content|G('publishedTimeText')|G('simpleText')|A(age),
 144                 'live': content|G('badges')|Select('metadataBadgeRenderer')|G('style')=='BADGE_STYLE_TYPE_LIVE_NOW',
 145             }})
 146         elif key in ['playlistRenderer', 'radioRenderer', 'showRenderer']: # radio == "Mix" playlist, show == normal playlist, specially displayed
 147             results.append({'type': 'PLAYLIST', 'content': {
 148                 'playlist_id': content['navigationEndpoint']|G('watchEndpoint')|G('playlistId'),
 149                 'video_id': content['navigationEndpoint']|G('watchEndpoint')|G('videoId'),
 150                 'title': content['title']|G.text,
 151                 'author': content|G('longBylineText','shortBylineText')|G.text,
 152                 'channel_id': content|G('longBylineText','shortBylineText')|G('runs')|G(0) \
 153                     |G('navigationEndpoint')|G('browseEndpoint')|G('browseId'),
 154                 'n_videos': content|G('videoCount')|A.int or \
 155                     content|G('videoCountShortText','videoCountText')|G.text, # "Mix" playlists
 156             }})
 157         elif key == 'channelRenderer':
 158             results.append({'type': 'CHANNEL', 'content': {
 159                 'channel_id': content['channelId'],
 160                 'title': content['title']|G.text,
 161                 'icons': content['thumbnail']['thumbnails']|A(mkthumbs),
 162                 'subscribers': content|G('subscriberCountText')|G('simpleText'), # "2.47K subscribers"
 163             }})
 164         elif key == 'shelfRenderer':
 165             subkey = next(iter(content['content'].keys()), None) #verticalListRenderer/horizontalMovieListRenderer
 166             r, e = parse_result_items(content['content'][subkey]['items'])
 167             results.extend(r)
 168             extras.extend(e)
 169         elif key in ["reelShelfRenderer"]:
 170             r, e = parse_result_items(content['items'])
 171             results.extend(r)
 172             extras.extend(e)
 173         elif key in ['movieRenderer', 'gridMovieRenderer']: # movies to buy/rent
 174             pass # gMR.{videoId,title.runs[].text,lengthText.simpleText}
 175         elif key in ['carouselAdRenderer','searchPyvRenderer','promotedSparklesTextSearchRenderer',
 176                 'promotedSparklesWebRenderer','compactPromotedItemRenderer', 'adSlotRenderer']: # haha, no.
 177             pass
 178         elif key == 'horizontalCardListRenderer':
 179             # suggested searches: .cards[].searchRefinementCardRenderer.query.runs[].text
 180             pass
 181         elif key == 'emergencyOneboxRenderer': # suicide prevention hotline
 182             pass
 183         elif key in ['clarificationRenderer', 'infoPanelContainerRenderer']: # COVID-19/conspiracy theory infos
 184             pass
 185         elif key == 'webAnswerRenderer': # "Result from the web"
 186             pass
 187         elif key == 'infoPanelContentRenderer': # "These results may be new or changing quickly"
 188             pass
 189         elif key == 'hashtagTileRenderer': # link to '/hashtag/<search_query>'
 190             pass
 191         elif key in ['didYouMeanRenderer', 'showingResultsForRenderer', 'includingResultsForRenderer']:
 192             extras.append({
 193                 'type': 'spelling',
 194                 'query': content['correctedQueryEndpoint']['searchEndpoint']['query'], # non-misspelled query
 195                 'autocorrected': key in ['showingResultsForRenderer', 'includingResultsForRenderer'],
 196             })
 197         elif key == 'messageRenderer': # "No more results"
 198             extras.append({
 199                 'type': 'message',
 200                 'message': content|G('title','text')|G.text,
 201             })
 202         elif key == 'backgroundPromoRenderer': # e.g. "no results"
 203             extras.append({
 204                 'type': content['icon']['iconType'],
 205                 'message': content['title']|G.text,
 206             })
 207         else:
 208             log_unknown_card(item)
 209     return results, extras
 210
 211 def parse_channel_items(items, channel_id, author):
 212     result = []
 213     extra = []
 214     for item in items:
 215         key = next(iter(item.keys()), None)
 216         content = item[key]
 217         if key in ["gridVideoRenderer", "videoRenderer", "videoCardRenderer", 'reelItemRenderer']: # reel==youtube-shorts
 218             # only videoCardRenderer (topic channels) has author and channel, others fall back to supplied ones.
 219             result.append({'type': 'VIDEO', 'content': {
 220                 'video_id': content['videoId'],
 221                 'title': content|G('title')|G.text or content|G('headline')|G.text,
 222                 'author': content|G('bylineText')|G.text or author,
 223                 'channel_id': (content|G('bylineText')|G('runs')
 224                     |Select('navigationEndpoint')
 225                     |G('browseEndpoint')|G('browseId') or channel_id),
 226                 'length': (content|G('lengthText')|G.text or # topic channel
 227                     content|G('thumbnailOverlays')
 228                     |Select('thumbnailOverlayTimeStatusRenderer')
 229                     |G('text')|G.text),
 230                 # topic channel: .metadataText.simpleText = "22M views \u00b7 2 months ago"
 231                 'views': content|G('viewCountText')|G.text|A.int,
 232                 'published': content|G('publishedTimeText')|G.text|A(age),
 233             }})
 234         elif key in ["gridPlaylistRenderer", "playlistRenderer", "gridRadioRenderer"]:
 235             result.append({'type': 'PLAYLIST', 'content': {
 236                 'playlist_id': content|G('navigationEndpoint')|G('watchEndpoint')|G('playlistId'),
 237                 'video_id': content|G('navigationEndpoint')|G('watchEndpoint')|G('videoId'),
 238                 'title': content|G('title')|G.text,
 239                 'author': author, # Note: gridRadioRenderer is by 'Youtube' without channel_id, ignoring that.
 240                 'channel_id': channel_id,
 241                 'n_videos': (content|G('videoCount')|A.int or # playlistRenderer
 242                     content|G('videoCountShortText','videoCountText')|G.text|A.int) # grid
 243             }})
 244         elif key == "showRenderer":
 245             result.append({'type': 'PLAYLIST', 'content': {
 246                 'playlist_id': content['navigationEndpoint']['watchEndpoint']['playlistId'],
 247                 'video_id': content['navigationEndpoint']['watchEndpoint']['videoId'],
 248                 'title': content['title']['simpleText'],
 249                 'author': author,
 250                 'channel_id': channel_id,
 251                 'n_videos': None,
 252             }})
 253         elif key in ["gridShowRenderer"]:
 254             result.append({'type': 'PLAYLIST', 'content': {
 255                 'playlist_id': (content|G('navigationEndpoint')
 256                     |G('browseEndpoint')|G('browseId'))[2:],
 257                 #^: playlistId prefixed with 'VL', which must be removed
 258                 'video_id': None,
 259                 'title': content|G('title')|G.text,
 260                 'author': author,
 261                 'channel_id': channel_id,
 262                 'n_videos': content|G('thumbnailOverlays')|G(0)
 263                     |G('thumbnailOverlayBottomPanelRenderer')|G('text')|G.text,
 264             }})
 265         elif key in ["itemSectionRenderer", "gridRenderer", "horizontalCardListRenderer", "horizontalListRenderer"]:
 266                 newkey = {
 267                     "itemSectionRenderer": 'contents',
 268                     "gridRenderer": 'items',
 269                     "horizontalCardListRenderer": 'cards',
 270                     "horizontalListRenderer": 'items',
 271                 }.get(key)
 272                 r, e = parse_channel_items(content[newkey], channel_id, author)
 273                 result.extend(r)
 274                 extra.extend(e)
 275         elif key in ["shelfRenderer", "richItemRenderer"]:
 276                 r, e = parse_channel_items([content['content']], channel_id, author)
 277                 result.extend(r)
 278                 extra.extend(e)
 279         elif key in ["reelShelfRenderer"]:
 280             r, e = parse_channel_items(content['items'], channel_id, author)
 281             result.extend(r)
 282             extra.extend(e)
 283         elif key == "messageRenderer":
 284             # e.g. {'messageRenderer': {'text': {'runs': [{'text': 'This channel has no playlists.'}]}}}
 285             pass
 286         elif key == "gameCardRenderer":
 287             pass
 288         elif key == "gridChannelRenderer":
 289             pass # don't care; related channels, e.g. on UCMsgXPD3wzzt8RxHJmXH7hQ
 290         elif key == 'continuationItemRenderer': # handled in parent function
 291             pass
 292         else:
 293             log_unknown_card(item)
 294
 295     return result, extra
 296
 297 def parse_playlist(item):
 298     key = next(iter(item.keys()), None)
 299     content = item[key]
 300     if key == "playlistVideoRenderer":
 301         if not content.get('isPlayable', False):
 302             return None # private or deleted video
 303
 304         return {'type': 'VIDEO', 'content': {
 305             'video_id': content['videoId'],
 306             'title': (content['title'].get('simpleText') or # playable videos
 307                 content['title'].get('runs',[{}])[0].get('text')), # "[Private video]"
 308             'playlist_id': content['navigationEndpoint']['watchEndpoint']['playlistId'],
 309             'index': content['navigationEndpoint']['watchEndpoint'].get('index',0), #or int(content['index']['simpleText']) (absent on course intros; e.g. PL96C35uN7xGJu6skU4TBYrIWxggkZBrF5)
 310             # rest is missing from unplayable videos:
 311             'author': content.get('shortBylineText',{}).get('runs',[{}])[0].get('text'),
 312             'channel_id':content.get('shortBylineText',{}).get('runs',[{}])[0].get('navigationEndpoint',{}).get('browseEndpoint',{}).get('browseId'),
 313             'length': (content.get("lengthText",{}).get("simpleText") or # "8:51"
 314                 int(content.get("lengthSeconds", 0))), # "531"
 315             'starttime': content['navigationEndpoint']['watchEndpoint'].get('startTimeSeconds'),
 316         }}
 317     else:
 318         raise Exception(item) # XXX TODO