text: # coding: utf-8
  
  from .common import InfoExtractor
  from ..utils import (
      clean_html,
      traverse_obj,
      unescapeHTML,
  )
  
  import itertools
  from urllib.parse import urlencode
  
  
  class RadioKapitalBaseIE(InfoExtractor):
      def _call_api(self, resource, video_id, note='Downloading JSON metadata', qs={}):
          return self._download_json(
              f'https://www.radiokapital.pl/wp-json/kapital/v1/{resource}?{urlencode(qs)}',
              video_id, note=note)
  
      def _parse_episode(self, data):
          release = '%s%s%s' % (data['published'][6:11], data['published'][3:6], data['published'][:3])
          return {
              '_type': 'url_transparent',
              'url': data['mixcloud_url'],
              'ie_key': 'Mixcloud',
              'title': unescapeHTML(data['title']),
              'description': clean_html(data.get('content')),
              'tags': traverse_obj(data, ('tags', ..., 'name')),
              'release_date': release,
              'series': traverse_obj(data, ('show', 'title')),
          }
  
  
  class RadioKapitalIE(RadioKapitalBaseIE):
      IE_NAME = 'radiokapital'
      _VALID_URL = r'https?://(?:www\.)?radiokapital\.pl/shows/[a-z\d-]+/(?P<id>[a-z\d-]+)'
  
      _TESTS = [{
          'url': 'https://radiokapital.pl/shows/tutaj-sa-smoki/5-its-okay-to-be-immaterial',
          'info_dict': {
              'id': 'radiokapital_radio-kapitał-tutaj-są-smoki-5-its-okay-to-be-immaterial-2021-05-20',
              'ext': 'm4a',
              'title': '#5: It’s okay to\xa0be\xa0immaterial',
              'description': 'md5:2499da5fbfb0e88333b7d37ec8e9e4c4',
              'uploader': 'Radio Kapitał',
              'uploader_id': 'radiokapital',
              'timestamp': 1621640164,
              'upload_date': '20210521',
          },
      }]
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
  
          episode = self._call_api('episodes/%s' % video_id, video_id)
          return self._parse_episode(episode)
  
  
  class RadioKapitalShowIE(RadioKapitalBaseIE):
      IE_NAME = 'radiokapital:show'
      _VALID_URL = r'https?://(?:www\.)?radiokapital\.pl/shows/(?P<id>[a-z\d-]+)/?(?:$|[?#])'
  
      _TESTS = [{
          'url': 'https://radiokapital.pl/shows/wesz',
          'info_dict': {
              'id': '100',
              'title': 'WĘSZ',
              'description': 'md5:3a557a1e0f31af612b0dcc85b1e0ca5c',
          },
          'playlist_mincount': 17,
      }]
  
      def _get_episode_list(self, series_id, page_no):
          return self._call_api(
              'episodes', series_id,
              f'Downloading episode list page #{page_no}', qs={
                  'show': series_id,
                  'page': page_no,
              })
  
      def _entries(self, series_id):
          for page_no in itertools.count(1):
              episode_list = self._get_episode_list(series_id, page_no)
              yield from (self._parse_episode(ep) for ep in episode_list['items'])
              if episode_list['next'] is None:
                  break
  
      def _real_extract(self, url):
          series_id = self._match_id(url)
  
          show = self._call_api(f'shows/{series_id}', series_id, 'Downloading show metadata')
          entries = self._entries(series_id)
          return {
              '_type': 'playlist',
              'entries': entries,
              'id': str(show['id']),
              'title': show.get('title'),
              'description': clean_html(show.get('content')),
          }
  