text: from __future__ import unicode_literals
  
  import re
  import json
  import os
  
  from .common import InfoExtractor
  from ..compat import (
      compat_urlparse,
      compat_urllib_parse,
      compat_urllib_parse_urlparse
  )
  from ..utils import (
      unified_strdate,
  )
  
  
  class NHLBaseInfoExtractor(InfoExtractor):
      @staticmethod
      def _fix_json(json_string):
          return json_string.replace('\\\'', '\'')
  
      def _real_extract_video(self, video_id):
          json_url = 'http://video.nhl.com/videocenter/servlets/playlist?ids=%s&format=json' % video_id
          data = self._download_json(
              json_url, video_id, transform_source=self._fix_json)
          return self._extract_video(data[0])
  
      def _extract_video(self, info):
          video_id = info['id']
          self.report_extraction(video_id)
  
          initial_video_url = info['publishPoint']
          if info['formats'] == '1':
              parsed_url = compat_urllib_parse_urlparse(initial_video_url)
              filename, ext = os.path.splitext(parsed_url.path)
              path = '%s_sd%s' % (filename, ext)
              data = compat_urllib_parse.urlencode({
                  'type': 'fvod',
                  'path': compat_urlparse.urlunparse(parsed_url[:2] + (path,) + parsed_url[3:])
              })
              path_url = 'http://video.nhl.com/videocenter/servlets/encryptvideopath?' + data
              path_doc = self._download_xml(
                  path_url, video_id, 'Downloading final video url')
              video_url = path_doc.find('path').text
          else:
              video_url = initial_video_url
  
          join = compat_urlparse.urljoin
          return {
              'id': video_id,
              'title': info['name'],
              'url': video_url,
              'description': info['description'],
              'duration': int(info['duration']),
              'thumbnail': join(join(video_url, '/u/'), info['bigImage']),
              'upload_date': unified_strdate(info['releaseDate'].split('.')[0]),
          }
  
  
  class NHLIE(NHLBaseInfoExtractor):
      IE_NAME = 'nhl.com'
      _VALID_URL = r'https?://video(?P<team>\.[^.]*)?\.nhl\.com/videocenter/(?:console)?(?:\?(?:.*?[?&])?)id=(?P<id>[-0-9a-zA-Z]+)'
  
      _TESTS = [{
          'url': 'http://video.canucks.nhl.com/videocenter/console?catid=6?id=453614',
          'md5': 'db704a4ea09e8d3988c85e36cc892d09',
          'info_dict': {
              'id': '453614',
              'ext': 'mp4',
              'title': 'Quick clip: Weise 4-3 goal vs Flames',
              'description': 'Dale Weise scores his first of the season to put the Canucks up 4-3.',
              'duration': 18,
              'upload_date': '20131006',
          },
      }, {
          'url': 'http://video.nhl.com/videocenter/console?id=2014020024-628-h',
          'md5': 'd22e82bc592f52d37d24b03531ee9696',
          'info_dict': {
              'id': '2014020024-628-h',
              'ext': 'mp4',
              'title': 'Alex Galchenyuk Goal on Ray Emery (14:40/3rd)',
              'description': 'Home broadcast - Montreal Canadiens at Philadelphia Flyers - October 11, 2014',
              'duration': 0,
              'upload_date': '20141011',
          },
      }, {
          'url': 'http://video.mapleleafs.nhl.com/videocenter/console?id=58665&catid=802',
          'md5': 'c78fc64ea01777e426cfc202b746c825',
          'info_dict': {
              'id': '58665',
              'ext': 'flv',
              'title': 'Classic Game In Six - April 22, 1979',
              'description': 'It was the last playoff game for the Leafs in the decade, and the last time the Leafs and Habs played in the playoffs. Great game, not a great ending.',
              'duration': 400,
              'upload_date': '20100129'
          },
      }, {
          'url': 'http://video.flames.nhl.com/videocenter/console?id=630616',
          'only_matching': True,
      }, {
          'url': 'http://video.nhl.com/videocenter/?id=736722',
          'only_matching': True,
      }]
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
          return self._real_extract_video(video_id)
  
  
  class NHLNewsIE(NHLBaseInfoExtractor):
      IE_NAME = 'nhl.com:news'
      IE_DESC = 'NHL news'
      _VALID_URL = r'https?://(?:www\.)?nhl\.com/ice/news\.html?(?:\?(?:.*?[?&])?)id=(?P<id>[-0-9a-zA-Z]+)'
  
      _TEST = {
          'url': 'http://www.nhl.com/ice/news.htm?id=750727',
          'md5': '4b3d1262e177687a3009937bd9ec0be8',
          'info_dict': {
              'id': '736722',
              'ext': 'mp4',
              'title': 'Cal Clutterbuck has been fined $2,000',
              'description': 'md5:45fe547d30edab88b23e0dd0ab1ed9e6',
              'duration': 37,
              'upload_date': '20150128',
          },
      }
  
      def _real_extract(self, url):
          news_id = self._match_id(url)
          webpage = self._download_webpage(url, news_id)
          video_id = self._search_regex(
              [r'pVid(\d+)', r"nlid\s*:\s*'(\d+)'"],
              webpage, 'video id')
          return self._real_extract_video(video_id)
  
  
  class NHLVideocenterIE(NHLBaseInfoExtractor):
      IE_NAME = 'nhl.com:videocenter'
      IE_DESC = 'NHL videocenter category'
      _VALID_URL = r'https?://video\.(?P<team>[^.]*)\.nhl\.com/videocenter/(console\?[^(id=)]*catid=(?P<catid>[0-9]+)(?![&?]id=).*?)?$'
      _TEST = {
          'url': 'http://video.canucks.nhl.com/videocenter/console?catid=999',
          'info_dict': {
              'id': '999',
              'title': 'Highlights',
          },
          'playlist_count': 12,
      }
  
      def _real_extract(self, url):
          mobj = re.match(self._VALID_URL, url)
          team = mobj.group('team')
          webpage = self._download_webpage(url, team)
          cat_id = self._search_regex(
              [r'var defaultCatId = "(.+?)";',
               r'{statusIndex:0,index:0,.*?id:(.*?),'],
              webpage, 'category id')
          playlist_title = self._html_search_regex(
              r'tab0"[^>]*?>(.*?)</td>',
              webpage, 'playlist title', flags=re.DOTALL).lower().capitalize()
  
          data = compat_urllib_parse.urlencode({
              'cid': cat_id,
              # This is the default value
              'count': 12,
              'ptrs': 3,
              'format': 'json',
          })
          path = '/videocenter/servlets/browse?' + data
          request_url = compat_urlparse.urljoin(url, path)
          response = self._download_webpage(request_url, playlist_title)
          response = self._fix_json(response)
          if not response.strip():
              self._downloader.report_warning('Got an empty reponse, trying '
                                              'adding the "newvideos" parameter')
              response = self._download_webpage(request_url + '&newvideos=true',
                                                playlist_title)
              response = self._fix_json(response)
          videos = json.loads(response)
  
          return {
              '_type': 'playlist',
              'title': playlist_title,
              'id': cat_id,
              'entries': [self._extract_video(v) for v in videos],
          }
  