text: # coding: utf-8
  from __future__ import unicode_literals
  
  import base64
  import json
  import hashlib
  import hmac
  import random
  import string
  import time
  
  from .common import InfoExtractor
  from ..compat import (
      compat_urllib_parse_urlencode,
      compat_urlparse,
  )
  from ..utils import (
      float_or_none,
      int_or_none,
  )
  
  
  class VRVBaseIE(InfoExtractor):
      _API_DOMAIN = None
      _API_PARAMS = {}
      _CMS_SIGNING = {}
  
      def _call_api(self, path, video_id, note, data=None):
          base_url = self._API_DOMAIN + '/core/' + path
          encoded_query = compat_urllib_parse_urlencode({
              'oauth_consumer_key': self._API_PARAMS['oAuthKey'],
              'oauth_nonce': ''.join([random.choice(string.ascii_letters) for _ in range(32)]),
              'oauth_signature_method': 'HMAC-SHA1',
              'oauth_timestamp': int(time.time()),
              'oauth_version': '1.0',
          })
          headers = self.geo_verification_headers()
          if data:
              data = json.dumps(data).encode()
              headers['Content-Type'] = 'application/json'
          method = 'POST' if data else 'GET'
          base_string = '&'.join([method, compat_urlparse.quote(base_url, ''), compat_urlparse.quote(encoded_query, '')])
          oauth_signature = base64.b64encode(hmac.new(
              (self._API_PARAMS['oAuthSecret'] + '&').encode('ascii'),
              base_string.encode(), hashlib.sha1).digest()).decode()
          encoded_query += '&oauth_signature=' + compat_urlparse.quote(oauth_signature, '')
          return self._download_json(
              '?'.join([base_url, encoded_query]), video_id,
              note='Downloading %s JSON metadata' % note, headers=headers, data=data)
  
      def _call_cms(self, path, video_id, note):
          if not self._CMS_SIGNING:
              self._CMS_SIGNING = self._call_api('index', video_id, 'CMS Signing')['cms_signing']
          return self._download_json(
              self._API_DOMAIN + path, video_id, query=self._CMS_SIGNING,
              note='Downloading %s JSON metadata' % note, headers=self.geo_verification_headers())
  
      def _set_api_params(self, webpage, video_id):
          if not self._API_PARAMS:
              self._API_PARAMS = self._parse_json(self._search_regex(
                  r'window\.__APP_CONFIG__\s*=\s*({.+?})</script>',
                  webpage, 'api config'), video_id)['cxApiParams']
              self._API_DOMAIN = self._API_PARAMS.get('apiDomain', 'https://api.vrv.co')
  
      def _get_cms_resource(self, resource_key, video_id):
          return self._call_api(
              'cms_resource', video_id, 'resource path', data={
                  'resource_key': resource_key,
              })['__links__']['cms_resource']['href']
  
  
  class VRVIE(VRVBaseIE):
      IE_NAME = 'vrv'
      _VALID_URL = r'https?://(?:www\.)?vrv\.co/watch/(?P<id>[A-Z0-9]+)'
      _TEST = {
          'url': 'https://vrv.co/watch/GR9PNZ396/Hidden-America-with-Jonah-Ray:BOSTON-WHERE-THE-PAST-IS-THE-PRESENT',
          'info_dict': {
              'id': 'GR9PNZ396',
              'ext': 'mp4',
              'title': 'BOSTON: WHERE THE PAST IS THE PRESENT',
              'description': 'md5:4ec8844ac262ca2df9e67c0983c6b83f',
              'uploader_id': 'seeso',
          },
          'params': {
              # m3u8 download
              'skip_download': True,
          },
      }
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
          webpage = self._download_webpage(
              url, video_id,
              headers=self.geo_verification_headers())
          media_resource = self._parse_json(self._search_regex(
              r'window\.__INITIAL_STATE__\s*=\s*({.+?})</script>',
              webpage, 'inital state'), video_id).get('watch', {}).get('mediaResource') or {}
  
          video_data = media_resource.get('json')
          if not video_data:
              self._set_api_params(webpage, video_id)
              episode_path = self._get_cms_resource(
                  'cms:/episodes/' + video_id, video_id)
              video_data = self._call_cms(episode_path, video_id, 'video')
          title = video_data['title']
  
          streams_json = media_resource.get('streams', {}).get('json', {})
          if not streams_json:
              self._set_api_params(webpage, video_id)
              streams_path = video_data['__links__']['streams']['href']
              streams_json = self._call_cms(streams_path, video_id, 'streams')
  
          audio_locale = streams_json.get('audio_locale')
          formats = []
          for stream_type, streams in streams_json.get('streams', {}).items():
              if stream_type in ('adaptive_hls', 'adaptive_dash'):
                  for stream in streams.values():
                      stream_url = stream.get('url')
                      if not stream_url:
                          continue
                      stream_id = stream.get('hardsub_locale') or audio_locale
                      format_id = '%s-%s' % (stream_type.split('_')[1], stream_id)
                      if stream_type == 'adaptive_hls':
                          adaptive_formats = self._extract_m3u8_formats(
                              stream_url, video_id, 'mp4', m3u8_id=format_id,
                              note='Downloading %s m3u8 information' % stream_id,
                              fatal=False)
                      else:
                          adaptive_formats = self._extract_mpd_formats(
                              stream_url, video_id, mpd_id=format_id,
                              note='Downloading %s MPD information' % stream_id,
                              fatal=False)
                      if audio_locale:
                          for f in adaptive_formats:
                              if f.get('acodec') != 'none':
                                  f['language'] = audio_locale
                      formats.extend(adaptive_formats)
          self._sort_formats(formats)
  
          subtitles = {}
          for subtitle in streams_json.get('subtitles', {}).values():
              subtitle_url = subtitle.get('url')
              if not subtitle_url:
                  continue
              subtitles.setdefault(subtitle.get('locale', 'en-US'), []).append({
                  'url': subtitle_url,
                  'ext': subtitle.get('format', 'ass'),
              })
  
          thumbnails = []
          for thumbnail in video_data.get('images', {}).get('thumbnails', []):
              thumbnail_url = thumbnail.get('source')
              if not thumbnail_url:
                  continue
              thumbnails.append({
                  'url': thumbnail_url,
                  'width': int_or_none(thumbnail.get('width')),
                  'height': int_or_none(thumbnail.get('height')),
              })
  
          return {
              'id': video_id,
              'title': title,
              'formats': formats,
              'subtitles': subtitles,
              'thumbnails': thumbnails,
              'description': video_data.get('description'),
              'duration': float_or_none(video_data.get('duration_ms'), 1000),
              'uploader_id': video_data.get('channel_id'),
              'series': video_data.get('series_title'),
              'season': video_data.get('season_title'),
              'season_number': int_or_none(video_data.get('season_number')),
              'season_id': video_data.get('season_id'),
              'episode': title,
              'episode_number': int_or_none(video_data.get('episode_number')),
              'episode_id': video_data.get('production_episode_id'),
          }
  
  
  class VRVSeriesIE(VRVBaseIE):
      IE_NAME = 'vrv:series'
      _VALID_URL = r'https?://(?:www\.)?vrv\.co/series/(?P<id>[A-Z0-9]+)'
      _TEST = {
          'url': 'https://vrv.co/series/G68VXG3G6/The-Perfect-Insider',
          'info_dict': {
              'id': 'G68VXG3G6',
          },
          'playlist_mincount': 11,
      }
  
      def _real_extract(self, url):
          series_id = self._match_id(url)
          webpage = self._download_webpage(
              url, series_id,
              headers=self.geo_verification_headers())
  
          self._set_api_params(webpage, series_id)
          seasons_path = self._get_cms_resource(
              'cms:/seasons?series_id=' + series_id, series_id)
          seasons_data = self._call_cms(seasons_path, series_id, 'seasons')
  
          entries = []
          for season in seasons_data.get('items', []):
              episodes_path = season['__links__']['season/episodes']['href']
              episodes = self._call_cms(episodes_path, series_id, 'episodes')
              for episode in episodes.get('items', []):
                  episode_id = episode['id']
                  entries.append(self.url_result(
                      'https://vrv.co/watch/' + episode_id,
                      'VRV', episode_id, episode.get('title')))
  
          return self.playlist_result(entries, series_id)
  