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path: root/hypervideo_dl/extractor/mainstreaming.py
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import re

from .common import InfoExtractor

from ..utils import (
    int_or_none,
    js_to_json,
    parse_duration,
    traverse_obj,
    try_get,
    urljoin
)


class MainStreamingIE(InfoExtractor):
    _VALID_URL = r'https?://(?:webtools-?)?(?P<host>[A-Za-z0-9-]*\.msvdn.net)/(?:embed|amp_embed|content)/(?P<id>\w+)'
    _EMBED_REGEX = [rf'<iframe[^>]+?src=["\']?(?P<url>{_VALID_URL})["\']?']
    IE_DESC = 'MainStreaming Player'

    _TESTS = [
        {
            # Live stream offline, has alternative content id
            'url': 'https://webtools-e18da6642b684f8aa9ae449862783a56.msvdn.net/embed/53EN6GxbWaJC',
            'info_dict': {
                'id': '53EN6GxbWaJC',
                'title': 'Diretta homepage 2021-12-31 12:00',
                'description': '',
                'live_status': 'was_live',
                'ext': 'mp4',
                'thumbnail': r're:https?://[A-Za-z0-9-]*\.msvdn.net/image/\w+/poster',
            },
            'expected_warnings': [
                'Ignoring alternative content ID: WDAF1KOWUpH3',
                'MainStreaming said: Live event is OFFLINE'
            ],
            'skip': 'live stream offline'
        }, {
            # playlist
            'url': 'https://webtools-e18da6642b684f8aa9ae449862783a56.msvdn.net/embed/WDAF1KOWUpH3',
            'info_dict': {
                'id': 'WDAF1KOWUpH3',
                'title': 'Playlist homepage',
            },
            'playlist_mincount': 2
        }, {
            # livestream
            'url': 'https://webtools-859c1818ed614cc5b0047439470927b0.msvdn.net/embed/tDoFkZD3T1Lw',
            'info_dict': {
                'id': 'tDoFkZD3T1Lw',
                'title': r're:Class CNBC Live \d{4}-\d{2}-\d{2} \d{2}:\d{2}$',
                'live_status': 'is_live',
                'ext': 'mp4',
                'thumbnail': r're:https?://[A-Za-z0-9-]*\.msvdn.net/image/\w+/poster',
            },
            'skip': 'live stream'
        }, {
            'url': 'https://webtools-f5842579ff984c1c98d63b8d789673eb.msvdn.net/embed/EUlZfGWkGpOd?autoPlay=false',
            'info_dict': {
                'id': 'EUlZfGWkGpOd',
                'title': 'La Settimana ',
                'description': '03 Ottobre ore 02:00',
                'ext': 'mp4',
                'live_status': 'not_live',
                'thumbnail': r're:https?://[A-Za-z0-9-]*\.msvdn.net/image/\w+/poster',
                'duration': 1512
            }
        }, {
            # video without webtools- prefix
            'url': 'https://f5842579ff984c1c98d63b8d789673eb.msvdn.net/embed/MfuWmzL2lGkA?autoplay=false&T=1635860445',
            'info_dict': {
                'id': 'MfuWmzL2lGkA',
                'title': 'TG Mattina',
                'description': '06 Ottobre ore 08:00',
                'ext': 'mp4',
                'live_status': 'not_live',
                'thumbnail': r're:https?://[A-Za-z0-9-]*\.msvdn.net/image/\w+/poster',
                'duration': 789.04
            }
        }, {
            # always-on livestream with DVR
            'url': 'https://webtools-f5842579ff984c1c98d63b8d789673eb.msvdn.net/embed/HVvPMzy',
            'info_dict': {
                'id': 'HVvPMzy',
                'title': r're:^Diretta LaC News24 \d{4}-\d{2}-\d{2} \d{2}:\d{2}$',
                'description': 'canale all news',
                'live_status': 'is_live',
                'ext': 'mp4',
                'thumbnail': r're:https?://[A-Za-z0-9-]*\.msvdn.net/image/\w+/poster',
            },
            'params': {
                'skip_download': True,
            },
        }, {
            # no host
            'url': 'https://webtools.msvdn.net/embed/MfuWmzL2lGkA',
            'only_matching': True
        }, {
            'url': 'https://859c1818ed614cc5b0047439470927b0.msvdn.net/amp_embed/tDoFkZD3T1Lw',
            'only_matching': True
        }, {
            'url': 'https://859c1818ed614cc5b0047439470927b0.msvdn.net/content/tDoFkZD3T1Lw#',
            'only_matching': True
        }
    ]

    def _playlist_entries(self, host, playlist_content):
        for entry in playlist_content:
            content_id = entry.get('contentID')
            yield {
                '_type': 'url',
                'ie_key': MainStreamingIE.ie_key(),
                'id': content_id,
                'duration': int_or_none(traverse_obj(entry, ('duration', 'totalSeconds'))),
                'title': entry.get('title'),
                'url': f'https://{host}/embed/{content_id}'
            }

    @staticmethod
    def _get_webtools_host(host):
        if not host.startswith('webtools'):
            host = 'webtools' + ('-' if not host.startswith('.') else '') + host
        return host

    def _get_webtools_base_url(self, host):
        return f'{self.http_scheme()}//{self._get_webtools_host(host)}'

    def _call_api(self, host: str, path: str, item_id: str, query=None, note='Downloading API JSON', fatal=False):
        # JSON API, does not appear to be documented
        return self._call_webtools_api(host, '/api/v2/' + path, item_id, query, note, fatal)

    def _call_webtools_api(self, host: str, path: str, item_id: str, query=None, note='Downloading webtools API JSON', fatal=False):
        # webtools docs: https://webtools.msvdn.net/
        return self._download_json(
            urljoin(self._get_webtools_base_url(host), path), item_id, query=query, note=note, fatal=fatal)

    def _real_extract(self, url):
        host, video_id = self._match_valid_url(url).groups()
        content_info = try_get(
            self._call_api(
                host, f'content/{video_id}', video_id, note='Downloading content info API JSON'), lambda x: x['playerContentInfo'])
        # Fallback
        if not content_info:
            webpage = self._download_webpage(url, video_id)
            player_config = self._parse_json(
                self._search_regex(
                    r'config\s*=\s*({.+?})\s*;', webpage, 'mainstreaming player config',
                    default='{}', flags=re.DOTALL),
                video_id, transform_source=js_to_json, fatal=False) or {}
            content_info = player_config['contentInfo']

        host = content_info.get('host') or host
        video_id = content_info.get('contentID') or video_id
        title = content_info.get('title')
        description = traverse_obj(content_info, 'longDescription', 'shortDescription', expected_type=str)
        live_status = 'not_live'
        if content_info.get('drmEnabled'):
            self.report_drm(video_id)

        alternative_content_id = content_info.get('alternativeContentID')
        if alternative_content_id:
            self.report_warning(f'Ignoring alternative content ID: {alternative_content_id}')

        content_type = int_or_none(content_info.get('contentType'))
        format_base_url = None
        formats = []
        subtitles = {}
        # Live content
        if content_type == 20:
            dvr_enabled = traverse_obj(content_info, ('playerSettings', 'dvrEnabled'), expected_type=bool)
            format_base_url = f"https://{host}/live/{content_info['liveSourceID']}/{video_id}/%s{'?DVR' if dvr_enabled else ''}"
            live_status = 'is_live'
            heartbeat = self._call_api(host, f'heartbeat/{video_id}', video_id, note='Checking stream status') or {}
            if heartbeat.get('heartBeatUp') is False:
                self.raise_no_formats(f'MainStreaming said: {heartbeat.get("responseMessage")}', expected=True)
                live_status = 'was_live'

        # Playlist
        elif content_type == 31:
            return self.playlist_result(
                self._playlist_entries(host, content_info.get('playlistContents')), video_id, title, description)
        # Normal video content?
        elif content_type == 10:
            format_base_url = f'https://{host}/vod/{video_id}/%s'
            # Progressive format
            # Note: in https://webtools.msvdn.net/loader/playerV2.js there is mention of original.mp3 format,
            # however it seems to be the same as original.mp4?
            formats.append({'url': format_base_url % 'original.mp4', 'format_note': 'original', 'quality': 1})
        else:
            self.raise_no_formats(f'Unknown content type {content_type}')

        if format_base_url:
            m3u8_formats, m3u8_subs = self._extract_m3u8_formats_and_subtitles(
                format_base_url % 'playlist.m3u8', video_id=video_id, fatal=False)
            mpd_formats, mpd_subs = self._extract_mpd_formats_and_subtitles(
                format_base_url % 'manifest.mpd', video_id=video_id, fatal=False)

            subtitles = self._merge_subtitles(m3u8_subs, mpd_subs)
            formats.extend(m3u8_formats + mpd_formats)

        return {
            'id': video_id,
            'title': title,
            'description': description,
            'formats': formats,
            'live_status': live_status,
            'duration': parse_duration(content_info.get('duration')),
            'tags': content_info.get('tags'),
            'subtitles': subtitles,
            'thumbnail': urljoin(self._get_webtools_base_url(host), f'image/{video_id}/poster')
        }