text: from .common import InfoExtractor
  from ..utils import (
      clean_html,
      compat_str,
      format_field,
      int_or_none,
      parse_iso8601,
      unified_strdate,
  )
  
  
  class LnkGoIE(InfoExtractor):
      _VALID_URL = r'https?://(?:www\.)?lnk(?:go)?\.(?:alfa\.)?lt/(?:visi-video/[^/]+|video)/(?P<id>[A-Za-z0-9-]+)(?:/(?P<episode_id>\d+))?'
      _TESTS = [{
          'url': 'http://www.lnkgo.lt/visi-video/aktualai-pratesimas/ziurek-putka-trys-klausimai',
          'info_dict': {
              'id': '10809',
              'ext': 'mp4',
              'title': "Put'ka: Trys Klausimai",
              'upload_date': '20161216',
              'description': 'Seniai matytas Put’ka užduoda tris klausimėlius. Pabandykime surasti atsakymus.',
              'age_limit': 18,
              'duration': 117,
              'thumbnail': r're:^https?://.*\.jpg$',
              'timestamp': 1481904000,
          },
          'params': {
              'skip_download': True,  # HLS download
          },
      }, {
          'url': 'http://lnkgo.alfa.lt/visi-video/aktualai-pratesimas/ziurek-nerdas-taiso-kompiuteri-2',
          'info_dict': {
              'id': '10467',
              'ext': 'mp4',
              'title': 'Nėrdas: Kompiuterio Valymas',
              'upload_date': '20150113',
              'description': 'md5:7352d113a242a808676ff17e69db6a69',
              'age_limit': 18,
              'duration': 346,
              'thumbnail': r're:^https?://.*\.jpg$',
              'timestamp': 1421164800,
          },
          'params': {
              'skip_download': True,  # HLS download
          },
      }, {
          'url': 'https://lnk.lt/video/neigalieji-tv-bokste/37413',
          'only_matching': True,
      }]
      _AGE_LIMITS = {
          'N-7': 7,
          'N-14': 14,
          'S': 18,
      }
      _M3U8_TEMPL = 'https://vod.lnk.lt/lnk_vod/lnk/lnk/%s:%s/playlist.m3u8%s'
  
      def _real_extract(self, url):
          display_id, video_id = self._match_valid_url(url).groups()
  
          video_info = self._download_json(
              'https://lnk.lt/api/main/video-page/%s/%s/false' % (display_id, video_id or '0'),
              display_id)['videoConfig']['videoInfo']
  
          video_id = compat_str(video_info['id'])
          title = video_info['title']
          prefix = 'smil' if video_info.get('isQualityChangeAvailable') else 'mp4'
          formats = self._extract_m3u8_formats(
              self._M3U8_TEMPL % (prefix, video_info['videoUrl'], video_info.get('secureTokenParams') or ''),
              video_id, 'mp4', 'm3u8_native')
          self._sort_formats(formats)
  
          return {
              'id': video_id,
              'display_id': display_id,
              'title': title,
              'formats': formats,
              'thumbnail': format_field(video_info, 'posterImage', 'https://lnk.lt/all-images/%s'),
              'duration': int_or_none(video_info.get('duration')),
              'description': clean_html(video_info.get('htmlDescription')),
              'age_limit': self._AGE_LIMITS.get(video_info.get('pgRating'), 0),
              'timestamp': parse_iso8601(video_info.get('airDate')),
              'view_count': int_or_none(video_info.get('viewsCount')),
          }
  
  
  class LnkIE(InfoExtractor):
      _VALID_URL = r'https?://(?:www\.)?lnk\.lt/[^/]+/(?P<id>\d+)'
  
      _TESTS = [{
          'url': 'https://lnk.lt/zinios/79791',
          'info_dict': {
              'id': '79791',
              'ext': 'mp4',
              'title': 'LNK.lt: Viešintų gyventojai sukilo prieš radijo bangų siųstuvą',
              'description': 'Svarbiausios naujienos trumpai, LNK žinios ir Info dienos pokalbiai.',
              'view_count': int,
              'duration': 233,
              'upload_date': '20191123',
              'thumbnail': r're:^https?://.*\.jpg$',
              'episode_number': 13431,
              'series': 'Naujausi žinių reportažai',
              'episode': 'Episode 13431'
          },
          'params': {'skip_download': True}
      }, {
          'url': 'https://lnk.lt/istorijos-trumpai/152546',
          'info_dict': {
              'id': '152546',
              'ext': 'mp4',
              'title': 'Radžio koncertas gaisre ',
              'description': 'md5:0666b5b85cb9fc7c1238dec96f71faba',
              'view_count': int,
              'duration': 54,
              'upload_date': '20220105',
              'thumbnail': r're:^https?://.*\.jpg$',
              'episode_number': 1036,
              'series': 'Istorijos trumpai',
              'episode': 'Episode 1036'
          },
          'params': {'skip_download': True}
      }, {
          'url': 'https://lnk.lt/gyvunu-pasaulis/151549',
          'info_dict': {
              'id': '151549',
              'ext': 'mp4',
              'title': 'Gyvūnų pasaulis',
              'description': '',
              'view_count': int,
              'duration': 1264,
              'upload_date': '20220108',
              'thumbnail': r're:^https?://.*\.jpg$',
              'episode_number': 16,
              'series': 'Gyvūnų pasaulis',
              'episode': 'Episode 16'
          },
          'params': {'skip_download': True}
      }]
  
      def _real_extract(self, url):
          id = self._match_id(url)
          video_json = self._download_json(f'https://lnk.lt/api/video/video-config/{id}', id)['videoInfo']
          formats, subtitles = [], {}
          if video_json.get('videoUrl'):
              fmts, subs = self._extract_m3u8_formats_and_subtitles(video_json['videoUrl'], id)
              formats.extend(fmts)
              subtitles = self._merge_subtitles(subtitles, subs)
          if video_json.get('videoFairplayUrl') and not video_json.get('drm'):
              fmts, subs = self._extract_m3u8_formats_and_subtitles(video_json['videoFairplayUrl'], id)
              formats.extend(fmts)
              subtitles = self._merge_subtitles(subtitles, subs)
  
          self._sort_formats(formats)
          return {
              'id': id,
              'title': video_json.get('title'),
              'description': video_json.get('description'),
              'view_count': video_json.get('viewsCount'),
              'duration': video_json.get('duration'),
              'upload_date': unified_strdate(video_json.get('airDate')),
              'thumbnail': format_field(video_json, 'posterImage', 'https://lnk.lt/all-images/%s'),
              'episode_number': int_or_none(video_json.get('episodeNumber')),
              'series': video_json.get('programTitle'),
              'formats': formats,
              'subtitles': subtitles,
          }
  