[discoverynetworks] add support new TLC/DMAX URLs(closes #27100)

- Remove first test of RaiPlayIE: it is no longer available
- Make RaiPlayIE extension-agnostic (passing possible `.json' URLs is now
  supported too)
- Adjust RaiPlayLiveIE to recent raiplay.it updates.  Passing it as
  `url_transparent' is no longer supported (there is no longer an accessible
  ContentItem)
- Adjust RaiPlayPlaylistIE to recent raiplay.it updates and instruct it about
  ContentSet-s.
- Update a RaiIE test and remove two tests that are no longer availables

Thanks to @remitamine for the review!

youtube_dl/extractor/discoverynetworks.py

@@ -7,7 +7,7 @@ from .dplay import DPlayIE
 
 
 class DiscoveryNetworksDeIE(DPlayIE):
-    _VALID_URL = r'https?://(?:www\.)?(?P<domain>(?:tlc|dmax)\.de|dplay\.co\.uk)/(?:programme|show)/(?P<programme>[^/]+)/video/(?P<alternate_id>[^/]+)'
+    _VALID_URL = r'https?://(?:www\.)?(?P<domain>(?:tlc|dmax)\.de|dplay\.co\.uk)/(?:programme|show|sendungen)/(?P<programme>[^/]+)/(?:video/)?(?P<alternate_id>[^/]+)'
 
     _TESTS = [{
         'url': 'https://www.tlc.de/programme/breaking-amish/video/die-welt-da-drauen/DCB331270001100',
@@ -29,6 +29,9 @@ class DiscoveryNetworksDeIE(DPlayIE):
     }, {
         'url': 'https://www.dplay.co.uk/show/ghost-adventures/video/hotel-leger-103620/EHD_280313B',
         'only_matching': True,
+    }, {
+        'url': 'https://tlc.de/sendungen/breaking-amish/die-welt-da-drauen/',
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):

youtube_dl/extractor/rai.py

@@ -16,8 +16,9 @@ from ..utils import (
     GeoRestrictedError,
     int_or_none,
     parse_duration,
+    remove_start,
     strip_or_none,
-    unescapeHTML,
+    try_get,
     unified_strdate,
     unified_timestamp,
     update_url_query,
@@ -67,7 +68,7 @@ class RaiBaseIE(InfoExtractor):
 
             # This does not imply geo restriction (e.g.
             # http://www.raisport.rai.it/dl/raiSport/media/rassegna-stampa-04a9f4bd-b563-40cf-82a6-aad3529cb4a9.html)
-            if media_url == 'http://download.rai.it/video_no_available.mp4':
+            if '/video_no_available.mp4' in media_url:
                 continue
 
             ext = determine_ext(media_url)
@@ -122,27 +123,8 @@ class RaiBaseIE(InfoExtractor):
 
 
 class RaiPlayIE(RaiBaseIE):
-    _VALID_URL = r'(?P<url>https?://(?:www\.)?raiplay\.it/.+?-(?P<id>%s)\.html)' % RaiBaseIE._UUID_RE
+    _VALID_URL = r'(?P<base>https?://(?:www\.)?raiplay\.it/.+?-(?P<id>%s))\.(?:html|json)' % RaiBaseIE._UUID_RE
     _TESTS = [{
-        'url': 'http://www.raiplay.it/video/2016/10/La-Casa-Bianca-e06118bb-59a9-4636-b914-498e4cfd2c66.html?source=twitter',
-        'md5': '340aa3b7afb54bfd14a8c11786450d76',
-        'info_dict': {
-            'id': 'e06118bb-59a9-4636-b914-498e4cfd2c66',
-            'ext': 'mp4',
-            'title': 'La Casa Bianca',
-            'alt_title': 'S2016 - Puntata del 23/10/2016',
-            'description': 'md5:a09d45890850458077d1f68bb036e0a5',
-            'thumbnail': r're:^https?://.*\.jpg$',
-            'uploader': 'Rai 3',
-            'creator': 'Rai 3',
-            'duration': 3278,
-            'timestamp': 1477764300,
-            'upload_date': '20161029',
-            'series': 'La Casa Bianca',
-            'season': '2016',
-        },
-        'skip': 'This content is not available',
-    }, {
         'url': 'http://www.raiplay.it/video/2014/04/Report-del-07042014-cb27157f-9dd0-4aee-b788-b1f67643a391.html',
         'md5': '8970abf8caf8aef4696e7b1f2adfc696',
         'info_dict': {
@@ -166,10 +148,10 @@ class RaiPlayIE(RaiBaseIE):
     }]
 
     def _real_extract(self, url):
-        url, video_id = re.match(self._VALID_URL, url).groups()
+        base, video_id = re.match(self._VALID_URL, url).groups()
 
         media = self._download_json(
-            url.replace('.html', '.json'), video_id, 'Downloading video JSON')
+            base + '.json', video_id, 'Downloading video JSON')
 
         title = media['name']
 
@@ -196,7 +178,8 @@ class RaiPlayIE(RaiBaseIE):
         season = media.get('season')
 
         info = {
-            'id': video_id,
+            'id': remove_start(media.get('id'), 'ContentItem-') or video_id,
+            'display_id': video_id,
             'title': self._live_title(title) if relinker_info.get(
                 'is_live') else title,
             'alt_title': strip_or_none(media.get('subtitle')),
@@ -218,16 +201,16 @@ class RaiPlayIE(RaiBaseIE):
         return info
 
 
-class RaiPlayLiveIE(RaiBaseIE):
-    _VALID_URL = r'https?://(?:www\.)?raiplay\.it/dirette/(?P<id>[^/?#&]+)'
-    _TEST = {
+class RaiPlayLiveIE(RaiPlayIE):
+    _VALID_URL = r'(?P<base>https?://(?:www\.)?raiplay\.it/dirette/(?P<id>[^/?#&]+))'
+    _TESTS = [{
         'url': 'http://www.raiplay.it/dirette/rainews24',
         'info_dict': {
             'id': 'd784ad40-e0ae-4a69-aa76-37519d238a9c',
             'display_id': 'rainews24',
             'ext': 'mp4',
             'title': 're:^Diretta di Rai News 24 [0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}$',
-            'description': 'md5:6eca31500550f9376819f174e5644754',
+            'description': 'md5:4d00bcf6dc98b27c6ec480de329d1497',
             'uploader': 'Rai News 24',
             'creator': 'Rai News 24',
             'is_live': True,
@@ -235,58 +218,50 @@ class RaiPlayLiveIE(RaiBaseIE):
         'params': {
             'skip_download': True,
         },
-    }
-
-    def _real_extract(self, url):
-        display_id = self._match_id(url)
-
-        webpage = self._download_webpage(url, display_id)
-
-        video_id = self._search_regex(
-            r'data-uniquename=["\']ContentItem-(%s)' % RaiBaseIE._UUID_RE,
-            webpage, 'content id')
-
-        return {
-            '_type': 'url_transparent',
-            'ie_key': RaiPlayIE.ie_key(),
-            'url': 'http://www.raiplay.it/dirette/ContentItem-%s.html' % video_id,
-            'id': video_id,
-            'display_id': display_id,
-        }
+    }]
 
 
 class RaiPlayPlaylistIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?raiplay\.it/programmi/(?P<id>[^/?#&]+)'
+    _VALID_URL = r'(?P<base>https?://(?:www\.)?raiplay\.it/programmi/(?P<id>[^/?#&]+))'
     _TESTS = [{
         'url': 'http://www.raiplay.it/programmi/nondirloalmiocapo/',
         'info_dict': {
             'id': 'nondirloalmiocapo',
             'title': 'Non dirlo al mio capo',
-            'description': 'md5:9f3d603b2947c1c7abb098f3b14fac86',
+            'description': 'md5:98ab6b98f7f44c2843fd7d6f045f153b',
         },
         'playlist_mincount': 12,
     }]
 
     def _real_extract(self, url):
-        playlist_id = self._match_id(url)
+        base, playlist_id = re.match(self._VALID_URL, url).groups()
 
-        webpage = self._download_webpage(url, playlist_id)
-
-        title = self._html_search_meta(
-            ('programma', 'nomeProgramma'), webpage, 'title')
-        description = unescapeHTML(self._html_search_meta(
-            ('description', 'og:description'), webpage, 'description'))
+        program = self._download_json(
+            base + '.json', playlist_id, 'Downloading program JSON')
 
         entries = []
-        for mobj in re.finditer(
-                r'<a\b[^>]+\bhref=(["\'])(?P<path>/raiplay/video/.+?)\1',
-                webpage):
-            video_url = urljoin(url, mobj.group('path'))
+        for b in (program.get('blocks') or []):
+            for s in (b.get('sets') or []):
+                s_id = s.get('id')
+                if not s_id:
+                    continue
+                medias = self._download_json(
+                    '%s/%s.json' % (base, s_id), s_id,
+                    'Downloading content set JSON', fatal=False)
+                if not medias:
+                    continue
+                for m in (medias.get('items') or []):
+                    path_id = m.get('path_id')
+                    if not path_id:
+                        continue
+                    video_url = urljoin(url, path_id)
                     entries.append(self.url_result(
                         video_url, ie=RaiPlayIE.ie_key(),
                         video_id=RaiPlayIE._match_id(video_url)))
 
-        return self.playlist_result(entries, playlist_id, title, description)
+        return self.playlist_result(
+            entries, playlist_id, program.get('name'),
+            try_get(program, lambda x: x['program_info']['description']))
 
 
 class RaiIE(RaiBaseIE):
@@ -329,19 +304,6 @@ class RaiIE(RaiBaseIE):
             'duration': 2214,
             'upload_date': '20161103',
         }
-    }, {
-        # drawMediaRaiTV(...)
-        'url': 'http://www.report.rai.it/dl/Report/puntata/ContentItem-0c7a664b-d0f4-4b2c-8835-3f82e46f433e.html',
-        'md5': '2dd727e61114e1ee9c47f0da6914e178',
-        'info_dict': {
-            'id': '59d69d28-6bb6-409d-a4b5-ed44096560af',
-            'ext': 'mp4',
-            'title': 'Il pacco',
-            'description': 'md5:4b1afae1364115ce5d78ed83cd2e5b3a',
-            'thumbnail': r're:^https?://.*\.jpg$',
-            'upload_date': '20141221',
-        },
-        'skip': 'This content is not available',
     }, {
         # initEdizione('ContentItem-...'
         'url': 'http://www.tg1.rai.it/dl/tg1/2010/edizioni/ContentSet-9b6e0cba-4bef-4aef-8cf0-9f7f665b7dfb-tg1.html?item=undefined',
@@ -353,18 +315,6 @@ class RaiIE(RaiBaseIE):
             'upload_date': '20170401',
         },
         'skip': 'Changes daily',
-    }, {
-        # HDS live stream with only relinker URL
-        'url': 'http://www.rai.tv/dl/RaiTV/dirette/PublishingBlock-1912dbbf-3f96-44c3-b4cf-523681fbacbc.html?channel=EuroNews',
-        'info_dict': {
-            'id': '1912dbbf-3f96-44c3-b4cf-523681fbacbc',
-            'ext': 'flv',
-            'title': 'EuroNews',
-        },
-        'params': {
-            'skip_download': True,
-        },
-        'skip': 'This content is available only in Italy',
     }, {
         # HLS live stream with ContentItem in og:url
         'url': 'http://www.rainews.it/dl/rainews/live/ContentItem-3156f2f2-dc70-4953-8e2f-70d7489d4ce9.html',
@@ -474,7 +424,7 @@ class RaiIE(RaiBaseIE):
             except ExtractorError:
                 pass
 
-        relinker_url = self._search_regex(
+        relinker_url = self._proto_relative_url(self._search_regex(
             r'''(?x)
                 (?:
                     var\s+videoURL|
@@ -486,7 +436,7 @@ class RaiIE(RaiBaseIE):
                     //mediapolis(?:vod)?\.rai\.it/relinker/relinkerServlet\.htm\?
                     (?:(?!\1).)*\bcont=(?:(?!\1).)+)\1
             ''',
-            webpage, 'relinker URL', group='url')
+            webpage, 'relinker URL', group='url'))
 
         relinker_info = self._extract_relinker_info(
             urljoin(url, relinker_url), video_id)