import functools
import json
import time
import urllib.parse

from .gigya import GigyaBaseIE
from ..networking.exceptions import HTTPError
from ..utils import (
    ExtractorError,
    clean_html,
    extract_attributes,
    float_or_none,
    get_element_by_class,
    get_element_html_by_class,
    int_or_none,
    join_nonempty,
    jwt_encode_hs256,
    make_archive_id,
    merge_dicts,
    parse_age_limit,
    parse_iso8601,
    str_or_none,
    strip_or_none,
    traverse_obj,
    try_call,
    url_or_none,
    urlencode_postdata,
)


class VRTBaseIE(GigyaBaseIE):
    _GEO_BYPASS = False
    _PLAYER_INFO = {
        'platform': 'desktop',
        'app': {
            'type': 'browser',
            'name': 'Chrome',
        },
        'device': 'undefined (undefined)',
        'os': {
            'name': 'Windows',
            'version': 'x86_64',
        },
        'player': {
            'name': 'VRT web player',
            'version': '2.7.4-prod-2023-04-19T06:05:45',
        },
    }
    # From https://player.vrt.be/vrtnws/js/main.js & https://player.vrt.be/ketnet/js/main.8cdb11341bcb79e4cd44.js
    _JWT_KEY_ID = '0-0Fp51UZykfaiCJrfTE3+oMI8zvDteYfPtR+2n1R+z8w='
    _JWT_SIGNING_KEY = 'b5f500d55cb44715107249ccd8a5c0136cfb2788dbb71b90a4f142423bacaf38'  # -dev
    # player-stag.vrt.be key:    d23987504521ae6fbf2716caca6700a24bb1579477b43c84e146b279de5ca595
    # player.vrt.be key:         2a9251d782700769fb856da5725daf38661874ca6f80ae7dc2b05ec1a81a24ae

    def _extract_formats_and_subtitles(self, data, video_id):
        if traverse_obj(data, 'drm'):
            self.report_drm(video_id)

        formats, subtitles = [], {}
        for target in traverse_obj(data, ('targetUrls', lambda _, v: url_or_none(v['url']) and v['type'])):
            format_type = target['type'].upper()
            format_url = target['url']
            if format_type in ('HLS', 'HLS_AES'):
                fmts, subs = self._extract_m3u8_formats_and_subtitles(
                    format_url, video_id, 'mp4', m3u8_id=format_type, fatal=False)
                formats.extend(fmts)
                self._merge_subtitles(subs, target=subtitles)
            elif format_type == 'HDS':
                formats.extend(self._extract_f4m_formats(
                    format_url, video_id, f4m_id=format_type, fatal=False))
            elif format_type == 'MPEG_DASH':
                fmts, subs = self._extract_mpd_formats_and_subtitles(
                    format_url, video_id, mpd_id=format_type, fatal=False)
                formats.extend(fmts)
                self._merge_subtitles(subs, target=subtitles)
            elif format_type == 'HSS':
                fmts, subs = self._extract_ism_formats_and_subtitles(
                    format_url, video_id, ism_id='mss', fatal=False)
                formats.extend(fmts)
                self._merge_subtitles(subs, target=subtitles)
            else:
                formats.append({
                    'format_id': format_type,
                    'url': format_url,
                })

        for sub in traverse_obj(data, ('subtitleUrls', lambda _, v: v['url'] and v['type'] == 'CLOSED')):
            subtitles.setdefault('nl', []).append({'url': sub['url']})

        return formats, subtitles

    def _call_api(self, video_id, client='null', id_token=None, version='v2'):
        player_info = {'exp': (round(time.time(), 3) + 900), **self._PLAYER_INFO}
        player_token = self._download_json(
            'https://media-services-public.vrt.be/vualto-video-aggregator-web/rest/external/v2/tokens',
            video_id, 'Downloading player token', headers={
                **self.geo_verification_headers(),
                'Content-Type': 'application/json',
            }, data=json.dumps({
                'identityToken': id_token or {},
                'playerInfo': jwt_encode_hs256(player_info, self._JWT_SIGNING_KEY, headers={
                    'kid': self._JWT_KEY_ID,
                }).decode(),
            }, separators=(',', ':')).encode())['vrtPlayerToken']

        return self._download_json(
            f'https://media-services-public.vrt.be/media-aggregator/{version}/media-items/{video_id}',
            video_id, 'Downloading API JSON', query={
                'vrtPlayerToken': player_token,
                'client': client,
            }, expected_status=400)


class VRTIE(VRTBaseIE):
    IE_DESC = 'VRT NWS, Flanders News, Flandern Info and Sporza'
    _VALID_URL = r'https?://(?:www\.)?(?P<site>vrt\.be/vrtnws|sporza\.be)/[a-z]{2}/\d{4}/\d{2}/\d{2}/(?P<id>[^/?&#]+)'
    _TESTS = [{
        'url': 'https://www.vrt.be/vrtnws/nl/2019/05/15/beelden-van-binnenkant-notre-dame-een-maand-na-de-brand/',
        'info_dict': {
            'id': 'pbs-pub-7855fc7b-1448-49bc-b073-316cb60caa71$vid-2ca50305-c38a-4762-9890-65cbd098b7bd',
            'ext': 'mp4',
            'title': 'Beelden van binnenkant Notre-Dame, één maand na de brand',
            'description': 'md5:6fd85f999b2d1841aa5568f4bf02c3ff',
            'duration': 31.2,
            'thumbnail': 'https://images.vrt.be/orig/2019/05/15/2d914d61-7710-11e9-abcc-02b7b76bf47f.jpg',
        },
        'params': {'skip_download': 'm3u8'},
    }, {
        'url': 'https://sporza.be/nl/2019/05/15/de-belgian-cats-zijn-klaar-voor-het-ek/',
        'info_dict': {
            'id': 'pbs-pub-f2c86a46-8138-413a-a4b9-a0015a16ce2c$vid-1f112b31-e58e-4379-908d-aca6d80f8818',
            'ext': 'mp4',
            'title': 'De Belgian Cats zijn klaar voor het EK',
            'description': 'Video: De Belgian Cats zijn klaar voor het EK mét Ann Wauters | basketbal, sport in het journaal',
            'duration': 115.17,
            'thumbnail': 'https://images.vrt.be/orig/2019/05/15/11c0dba3-770e-11e9-abcc-02b7b76bf47f.jpg',
        },
        'params': {'skip_download': 'm3u8'},
    }]
    _CLIENT_MAP = {
        'vrt.be/vrtnws': 'vrtnieuws',
        'sporza.be': 'sporza',
    }

    def _real_extract(self, url):
        site, display_id = self._match_valid_url(url).groups()
        webpage = self._download_webpage(url, display_id)
        attrs = extract_attributes(get_element_html_by_class('vrtvideo', webpage) or '')

        asset_id = attrs.get('data-video-id') or attrs['data-videoid']
        publication_id = traverse_obj(attrs, 'data-publication-id', 'data-publicationid')
        if publication_id:
            asset_id = f'{publication_id}${asset_id}'
        client = traverse_obj(attrs, 'data-client-code', 'data-client') or self._CLIENT_MAP[site]

        data = self._call_api(asset_id, client)
        formats, subtitles = self._extract_formats_and_subtitles(data, asset_id)

        description = self._html_search_meta(
            ['og:description', 'twitter:description', 'description'], webpage)
        if description == '…':
            description = None

        return {
            'id': asset_id,
            'formats': formats,
            'subtitles': subtitles,
            'description': description,
            'thumbnail': url_or_none(attrs.get('data-posterimage')),
            'duration': float_or_none(attrs.get('data-duration'), 1000),
            '_old_archive_ids': [make_archive_id('Canvas', asset_id)],
            **traverse_obj(data, {
                'title': ('title', {str}),
                'description': ('shortDescription', {str}),
                'duration': ('duration', {functools.partial(float_or_none, scale=1000)}),
                'thumbnail': ('posterImageUrl', {url_or_none}),
            }),
        }


class VrtNUIE(VRTBaseIE):
    IE_DESC = 'VRT MAX'
    _VALID_URL = r'https?://(?:www\.)?vrt\.be/vrtnu/a-z/(?:[^/]+/){2}(?P<id>[^/?#&]+)'
    _TESTS = [{
        # CONTENT_IS_AGE_RESTRICTED
        'url': 'https://www.vrt.be/vrtnu/a-z/de-ideale-wereld/2023-vj/de-ideale-wereld-d20230116/',
        'info_dict': {
            'id': 'pbs-pub-855b00a8-6ce2-4032-ac4f-1fcf3ae78524$vid-d2243aa1-ec46-4e34-a55b-92568459906f',
            'ext': 'mp4',
            'title': 'Tom Waes',
            'description': 'Satirisch actualiteitenmagazine met Ella Leyers. Tom Waes is te gast.',
            'timestamp': 1673905125,
            'release_timestamp': 1673905125,
            'series': 'De ideale wereld',
            'season_id': '1672830988794',
            'episode': 'Aflevering 1',
            'episode_number': 1,
            'episode_id': '1672830988861',
            'display_id': 'de-ideale-wereld-d20230116',
            'channel': 'VRT',
            'duration': 1939.0,
            'thumbnail': 'https://images.vrt.be/orig/2023/01/10/1bb39cb3-9115-11ed-b07d-02b7b76bf47f.jpg',
            'release_date': '20230116',
            'upload_date': '20230116',
            'age_limit': 12,
        },
    }, {
        'url': 'https://www.vrt.be/vrtnu/a-z/buurman--wat-doet-u-nu-/6/buurman--wat-doet-u-nu--s6-trailer/',
        'info_dict': {
            'id': 'pbs-pub-ad4050eb-d9e5-48c2-9ec8-b6c355032361$vid-0465537a-34a8-4617-8352-4d8d983b4eee',
            'ext': 'mp4',
            'title': 'Trailer seizoen 6 \'Buurman, wat doet u nu?\'',
            'description': 'md5:197424726c61384b4e5c519f16c0cf02',
            'timestamp': 1652940000,
            'release_timestamp': 1652940000,
            'series': 'Buurman, wat doet u nu?',
            'season': 'Seizoen 6',
            'season_number': 6,
            'season_id': '1652344200907',
            'episode': 'Aflevering 0',
            'episode_number': 0,
            'episode_id': '1652951873524',
            'display_id': 'buurman--wat-doet-u-nu--s6-trailer',
            'channel': 'VRT',
            'duration': 33.13,
            'thumbnail': 'https://images.vrt.be/orig/2022/05/23/3c234d21-da83-11ec-b07d-02b7b76bf47f.jpg',
            'release_date': '20220519',
            'upload_date': '20220519',
        },
        'params': {'skip_download': 'm3u8'},
    }]
    _NETRC_MACHINE = 'vrtnu'
    _authenticated = False

    def _perform_login(self, username, password):
        auth_info = self._gigya_login({
            'APIKey': '3_0Z2HujMtiWq_pkAjgnS2Md2E11a1AwZjYiBETtwNE-EoEHDINgtnvcAOpNgmrVGy',
            'targetEnv': 'jssdk',
            'loginID': username,
            'password': password,
            'authMode': 'cookie',
        })

        if auth_info.get('errorDetails'):
            raise ExtractorError(f'Unable to login. VrtNU said: {auth_info["errorDetails"]}', expected=True)

        # Sometimes authentication fails for no good reason, retry
        for retry in self.RetryManager():
            if retry.attempt > 1:
                self._sleep(1, None)
            try:
                self._request_webpage(
                    'https://token.vrt.be/vrtnuinitlogin', None, note='Requesting XSRF Token',
                    errnote='Could not get XSRF Token', query={
                        'provider': 'site',
                        'destination': 'https://www.vrt.be/vrtnu/',
                    })
                self._request_webpage(
                    'https://login.vrt.be/perform_login', None,
                    note='Performing login', errnote='Login failed',
                    query={'client_id': 'vrtnu-site'}, data=urlencode_postdata({
                        'UID': auth_info['UID'],
                        'UIDSignature': auth_info['UIDSignature'],
                        'signatureTimestamp': auth_info['signatureTimestamp'],
                        '_csrf': self._get_cookies('https://login.vrt.be').get('OIDCXSRF').value,
                    }))
            except ExtractorError as e:
                if isinstance(e.cause, HTTPError) and e.cause.status == 401:
                    retry.error = e
                    continue
                raise

        self._authenticated = True

    def _real_extract(self, url):
        display_id = self._match_id(url)
        parsed_url = urllib.parse.urlparse(url)
        details = self._download_json(
            f'{parsed_url.scheme}://{parsed_url.netloc}{parsed_url.path.rstrip("/")}.model.json',
            display_id, 'Downloading asset JSON', 'Unable to download asset JSON')['details']

        watch_info = traverse_obj(details, (
            'actions', lambda _, v: v['type'] == 'watch-episode', {dict}), get_all=False) or {}
        video_id = join_nonempty(
            'episodePublicationId', 'episodeVideoId', delim='$', from_dict=watch_info)
        if '$' not in video_id:
            raise ExtractorError('Unable to extract video ID')

        vrtnutoken = self._download_json(
            'https://token.vrt.be/refreshtoken', video_id, note='Retrieving vrtnutoken',
            errnote='Token refresh failed')['vrtnutoken'] if self._authenticated else None

        video_info = self._call_api(video_id, 'vrtnu-web@PROD', vrtnutoken)

        if 'title' not in video_info:
            code = video_info.get('code')
            if code in ('AUTHENTICATION_REQUIRED', 'CONTENT_IS_AGE_RESTRICTED'):
                self.raise_login_required(code, method='password')
            elif code in ('INVALID_LOCATION', 'CONTENT_AVAILABLE_ONLY_IN_BE'):
                self.raise_geo_restricted(countries=['BE'])
            elif code == 'CONTENT_AVAILABLE_ONLY_FOR_BE_RESIDENTS_AND_EXPATS':
                if not self._authenticated:
                    self.raise_login_required(code, method='password')
                self.raise_geo_restricted(countries=['BE'])
            raise ExtractorError(code, expected=True)

        formats, subtitles = self._extract_formats_and_subtitles(video_info, video_id)

        return {
            **traverse_obj(details, {
                'title': 'title',
                'description': ('description', {clean_html}),
                'timestamp': ('data', 'episode', 'onTime', 'raw', {parse_iso8601}),
                'release_timestamp': ('data', 'episode', 'onTime', 'raw', {parse_iso8601}),
                'series': ('data', 'program', 'title'),
                'season': ('data', 'season', 'title', 'value'),
                'season_number': ('data', 'season', 'title', 'raw', {int_or_none}),
                'season_id': ('data', 'season', 'id', {str_or_none}),
                'episode': ('data', 'episode', 'number', 'value', {str_or_none}),
                'episode_number': ('data', 'episode', 'number', 'raw', {int_or_none}),
                'episode_id': ('data', 'episode', 'id', {str_or_none}),
                'age_limit': ('data', 'episode', 'age', 'raw', {parse_age_limit}),
            }),
            'id': video_id,
            'display_id': display_id,
            'channel': 'VRT',
            'formats': formats,
            'duration': float_or_none(video_info.get('duration'), 1000),
            'thumbnail': url_or_none(video_info.get('posterImageUrl')),
            'subtitles': subtitles,
            '_old_archive_ids': [make_archive_id('Canvas', video_id)],
        }


class KetnetIE(VRTBaseIE):
    _VALID_URL = r'https?://(?:www\.)?ketnet\.be/(?P<id>(?:[^/]+/)*[^/?#&]+)'
    _TESTS = [{
        'url': 'https://www.ketnet.be/kijken/m/meisjes/6/meisjes-s6a5',
        'info_dict': {
            'id': 'pbs-pub-39f8351c-a0a0-43e6-8394-205d597d6162$vid-5e306921-a9aa-4fa9-9f39-5b82c8f1028e',
            'ext': 'mp4',
            'title': 'Meisjes',
            'episode': 'Reeks 6: Week 5',
            'season': 'Reeks 6',
            'series': 'Meisjes',
            'timestamp': 1685251800,
            'upload_date': '20230528',
        },
        'params': {'skip_download': 'm3u8'},
    }]

    def _real_extract(self, url):
        display_id = self._match_id(url)

        video = self._download_json(
            'https://senior-bff.ketnet.be/graphql', display_id, query={
                'query': '''{
  video(id: "content/ketnet/nl/%s.model.json") {
    description
    episodeNr
    imageUrl
    mediaReference
    programTitle
    publicationDate
    seasonTitle
    subtitleVideodetail
    titleVideodetail
  }
}''' % display_id,  # noqa: UP031
            })['data']['video']

        video_id = urllib.parse.unquote(video['mediaReference'])
        data = self._call_api(video_id, 'ketnet@PROD', version='v1')
        formats, subtitles = self._extract_formats_and_subtitles(data, video_id)

        return {
            'id': video_id,
            'formats': formats,
            'subtitles': subtitles,
            '_old_archive_ids': [make_archive_id('Canvas', video_id)],
            **traverse_obj(video, {
                'title': ('titleVideodetail', {str}),
                'description': ('description', {str}),
                'thumbnail': ('thumbnail', {url_or_none}),
                'timestamp': ('publicationDate', {parse_iso8601}),
                'series': ('programTitle', {str}),
                'season': ('seasonTitle', {str}),
                'episode': ('subtitleVideodetail', {str}),
                'episode_number': ('episodeNr', {int_or_none}),
            }),
        }


class DagelijkseKostIE(VRTBaseIE):
    IE_DESC = 'dagelijksekost.een.be'
    _VALID_URL = r'https?://dagelijksekost\.een\.be/gerechten/(?P<id>[^/?#&]+)'
    _TESTS = [{
        'url': 'https://dagelijksekost.een.be/gerechten/hachis-parmentier-met-witloof',
        'info_dict': {
            'id': 'md-ast-27a4d1ff-7d7b-425e-b84f-a4d227f592fa',
            'ext': 'mp4',
            'title': 'Hachis parmentier met witloof',
            'description': 'md5:9960478392d87f63567b5b117688cdc5',
            'display_id': 'hachis-parmentier-met-witloof',
        },
        'params': {'skip_download': 'm3u8'},
    }]

    def _real_extract(self, url):
        display_id = self._match_id(url)
        webpage = self._download_webpage(url, display_id)
        video_id = self._html_search_regex(
            r'data-url=(["\'])(?P<id>(?:(?!\1).)+)\1', webpage, 'video id', group='id')

        data = self._call_api(video_id, 'dako@prod', version='v1')
        formats, subtitles = self._extract_formats_and_subtitles(data, video_id)

        return {
            'id': video_id,
            'formats': formats,
            'subtitles': subtitles,
            'display_id': display_id,
            'title': strip_or_none(get_element_by_class(
                'dish-metadata__title', webpage) or self._html_search_meta('twitter:title', webpage)),
            'description': clean_html(get_element_by_class(
                'dish-description', webpage)) or self._html_search_meta(
                ['description', 'twitter:description', 'og:description'], webpage),
            '_old_archive_ids': [make_archive_id('Canvas', video_id)],
        }


class Radio1BeIE(VRTBaseIE):
    _VALID_URL = r'https?://radio1\.be/(?:lees|luister/select)/(?P<id>[\w/-]+)'
    _TESTS = [{
        'url': 'https://radio1.be/luister/select/de-ochtend/komt-n-va-volgend-jaar-op-in-wallonie',
        'info_dict': {
            'id': 'eb6c22e9-544f-44f4-af39-cf8cccd29e22',
            'title': 'Komt N-VA volgend jaar op in Wallonië?',
            'display_id': 'de-ochtend/komt-n-va-volgend-jaar-op-in-wallonie',
            'description': 'md5:b374ea1c9302f38362df9dea1931468e',
            'thumbnail': r're:https?://cds\.vrt\.radio/[^/#\?&]+',
        },
        'playlist_mincount': 1,
    }, {
        'url': 'https://radio1.be/lees/europese-unie-wil-onmiddellijke-humanitaire-pauze-en-duurzaam-staakt-het-vuren-in-gaza?view=web',
        'info_dict': {
            'id': '5d47f102-dbdb-4fa0-832b-26c1870311f2',
            'title': 'Europese Unie wil "onmiddellijke humanitaire pauze" en "duurzaam staakt-het-vuren" in Gaza',
            'description': 'md5:1aad1fae7d39edeffde5d3e67d276b64',
            'thumbnail': r're:https?://cds\.vrt\.radio/[^/#\?&]+',
            'display_id': 'europese-unie-wil-onmiddellijke-humanitaire-pauze-en-duurzaam-staakt-het-vuren-in-gaza',
        },
        'playlist_mincount': 1,
    }]

    def _extract_video_entries(self, next_js_data, display_id):
        video_data = traverse_obj(
            next_js_data, ((None, ('paragraphs', ...)), {lambda x: x if x['mediaReference'] else None}))
        for data in video_data:
            media_reference = data['mediaReference']
            formats, subtitles = self._extract_formats_and_subtitles(
                self._call_api(media_reference), display_id)

            yield {
                'id': media_reference,
                'formats': formats,
                'subtitles': subtitles,
                **traverse_obj(data, {
                    'title': ('title', {str}),
                    'description': ('body', {clean_html}),
                }),
            }

    def _real_extract(self, url):
        display_id = self._match_id(url)
        webpage = self._download_webpage(url, display_id)
        next_js_data = self._search_nextjs_data(webpage, display_id)['props']['pageProps']['item']

        return self.playlist_result(
            self._extract_video_entries(next_js_data, display_id), **merge_dicts(traverse_obj(
                next_js_data, ({
                    'id': ('id', {str}),
                    'title': ('title', {str}),
                    'description': (('description', 'content'), {clean_html}),
                }), get_all=False), {
                    'display_id': display_id,
                    'title': self._html_search_meta(['name', 'og:title', 'twitter:title'], webpage),
                    'description': self._html_search_meta(['description', 'og:description', 'twitter:description'], webpage),
                    'thumbnail': self._html_search_meta(['og:image', 'twitter:image'], webpage),
            }))


class VRTMaxRadioIE(VRTBaseIE):
    IE_DESC = 'VRT MAX (radio)'
    _VALID_URL = r'https?://(?:www\.)?vrt\.be/(?:vrtmax|vrtnu)/luister/radio/(?P<show1l>[^/])/(?P<show>[^/]+)/(?P<id>[^/?#&]+)/?'
    _TESTS = [{
        'url': 'https://www.vrt.be/vrtmax/luister/radio/d/duyster~11-177/duyster~11-27934-0/',
        'md5': '14d002b1ebd8591ae360ff54a9b51515',  # ... of first Fragment.
        'info_dict': {
            'id': 'duyster~11-27934-0',
            'ext': 'mp4',
            'title': 'DUYSTER.',
            'description': 'DUYSTER. - maandag 10 juni 2024 om 22:00 | VRT MAX',
            'thumbnail': 'https://images.vrt.be/vrtmax_prog_radio1/2023/10/05/1266f9e6-633c-11ee-91d7-02b7b76bf47f.png',
            'timestamp': 1718049600,
            'upload_date': '20240610',
            'duration': 7200,
            'channel': 'Radio 1',
            'channel_url': 'https://www.vrt.be/vrtmax/kanalen/radio-1/',
            'display_id': 'duyster~11-27934-0',
        },
    }, {
        'url': 'https://www.vrt.be/vrtnu/luister/radio/n/nachtbaders~31-182/nachtbaders~31-22512-0/',
        'md5': '85e9b0edf133f6638aa8d56581ac8773',
        'info_dict': {
            'id': 'nachtbaders~31-22512-0',
            'ext': 'mp4',
            'title': 'Nachtbaders',
            'description': 'Nachtbaders - vrijdag 5 januari 2024 om 22:00 | VRT MAX | Nachtbaders Tom Soetaert en Niels Van Paemel dompelen je onder in de dromerige wereld van de neoklassiek. In hun queeste naar het beste uit het genre leggen ze de luisteraar te week in een bad van bedwelmende muziek van onder meer Max Richter, Bon Iver, Sigur Rós, Nils Frahm en Jóhann Jóhannson.',
            'thumbnail': 'https://images.vrt.be/orig/2021/10/20/fdd5992e-31ad-11ec-b07d-02b7b76bf47f.jpg',
            'timestamp': 1704488400.0,
            'upload_date': '20240105',
            'duration': 7200.0,
            'channel': 'Klara',
            'channel_url': 'https://www.vrt.be/vrtmax/kanalen/klara/',
            'display_id': 'nachtbaders~31-22512-0',
        },
    }]

    _GRAPHQUERY = '''query RadioEpisodePage($pageId: ID!) {
  page(id: $pageId) {
    ... on RadioEpisodePage {
      title
      socialSharing {
        title
      }
      player {
        listenAction {
          ... on RadioEpisodeListenAction {
            streamId
            startDate
            endDate
          }
        }
      }
      radioEpisode {
        richDescription {
          text
        }
        brand
        image {
          templateUrl
        }
        actionItems {
          action {
            ... on LinkAction {
              link
              linkType
            }
          }
        }
      }
    }
  }
}'''

    def get_metadata(self, show1l, show, id):
        # Rather fragile, download responds with nothing but "400: Bad Request" if any
        # GraphQL part or header is out of place.  Best to keep them minimal.
        graphqlvar = f"/vrtnu/luister/radio/{show1l}/{show}/{id}/"
        postdata = json.dumps({
            'query': self._GRAPHQUERY,
            'variables': {"pageId": graphqlvar},
        }).encode()
        return self._download_json(
            'https://www.vrt.be/vrtnu-api/graphql/public/v1', id,
            note="Downloading GraphQL metadata", data=postdata,
            headers={
                'content-type': 'application/json',
                'Accept': 'application/graphql+json, application/json',
                'Accept-Encoding': 'gzip, deflate, br',
                'x-vrt-client-name': 'WEB',
            })

    def _real_extract(self, url):
        (show1l, show, id) = self._match_valid_url(url).groups()
        metadata = self.get_metadata(show1l, show, id)['data']['page']

        audio_id = traverse_obj(metadata, ('player', 'listenAction', 'streamId'))
        media_items = self._call_api(audio_id, 'vrtnu-web@PROD', version='v2')
        formats, _ = self._extract_formats_and_subtitles(media_items, audio_id)

        return {
            'id': id,
            'formats': formats,
            **traverse_obj(metadata, {
                'title': 'title',
                'description': ([('socialSharing', 'title'),
                                 ('radioEpisode', 'richDescription', 'text')],
                                all, {lambda txts: ' | '.join(txts) or None}),
                'thumbnail': ('radioEpisode', 'image', 'templateUrl'),
                'timestamp': ('player', 'listenAction', 'startDate', {lambda x: x / 1000}),
                # Duration of original transmission, downloaded file is sometimes shorter:
                'duration': ('player', 'listenAction',
                             {lambda a: try_call(lambda: (a['endDate'] - a['startDate']) / 1000)}),
                'channel': ('radioEpisode', 'brand'),
                'channel_url': ('radioEpisode', 'actionItems', ..., 'action', all,
                                lambda _, act: act.get('linkType') == 'channel', any,
                                'link', {lambda link: 'https://www.vrt.be' + link}),
            })
        }