import functools
import re

from .theplatform import ThePlatformBaseIE
from ..utils import (
    ExtractorError,
    GeoRestrictedError,
    int_or_none,
    OnDemandPagedList,
    parse_qs,
    try_get,
    urljoin,
    update_url_query,
)


class MediasetIE(ThePlatformBaseIE):
    _TP_TLD = 'eu'
    _VALID_URL = r'''(?x)
                    (?:
                        mediaset:|
                        https?://
                            (?:\w+\.)+mediaset\.it/
                            (?:
                                (?:video|on-demand|movie)/(?:[^/]+/)+[^/]+_|
                                player/(?:v\d+/)?index\.html\?.*?\bprogramGuid=
                            )
                    )(?P<id>[0-9A-Z]{16,})
                    '''
    _TESTS = [{
        # full episode
        'url': 'https://www.mediasetplay.mediaset.it/video/mrwronglezionidamore/episodio-1_F310575103000102',
        'md5': 'a7e75c6384871f322adb781d3bd72c26',
        'info_dict': {
            'id': 'F310575103000102',
            'ext': 'mp4',
            'title': 'Episodio 1',
            'description': 'md5:e8017b7d7194e9bfb75299c2b8d81e02',
            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 2682.0,
            'upload_date': '20210530',
            'series': 'Mr Wrong - Lezioni d\'amore',
            'timestamp': 1622413946,
            'uploader': 'Canale 5',
            'uploader_id': 'C5',
            'season': 'Season 1',
            'episode': 'Episode 1',
            'season_number': 1,
            'episode_number': 1,
            'chapters': [{'start_time': 0.0, 'end_time': 439.88}, {'start_time': 439.88, 'end_time': 1685.84}, {'start_time': 1685.84, 'end_time': 2682.0}],
        },
    }, {
        'url': 'https://www.mediasetplay.mediaset.it/video/matrix/puntata-del-25-maggio_F309013801000501',
        'md5': '1276f966ac423d16ba255ce867de073e',
        'info_dict': {
            'id': 'F309013801000501',
            'ext': 'mp4',
            'title': 'Puntata del 25 maggio',
            'description': 'md5:ee2e456e3eb1dba5e814596655bb5296',
            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 6565.008,
            'upload_date': '20200903',
            'series': 'Matrix',
            'timestamp': 1599172492,
            'uploader': 'Canale 5',
            'uploader_id': 'C5',
            'season': 'Season 5',
            'episode': 'Episode 5',
            'season_number': 5,
            'episode_number': 5,
            'chapters': [{'start_time': 0.0, 'end_time': 3409.08}, {'start_time': 3409.08, 'end_time': 6565.008}],
        },
    }, {
        'url': 'https://www.mediasetplay.mediaset.it/video/cameracafe5/episodio-69-pezzo-di-luna_F303843101017801',
        'md5': 'd1650ac9ff944f185556126a736df148',
        'info_dict': {
            'id': 'F303843101017801',
            'ext': 'mp4',
            'title': 'Episodio 69 - Pezzo di luna',
            'description': 'md5:7c32c8ec4118b72588b9412f11353f73',
            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 263.008,
            'upload_date': '20200902',
            'series': 'Camera Café 5',
            'timestamp': 1599064700,
            'uploader': 'Italia 1',
            'uploader_id': 'I1',
            'season': 'Season 5',
            'episode': 'Episode 178',
            'season_number': 5,
            'episode_number': 178,
            'chapters': [{'start_time': 0.0, 'end_time': 261.88}, {'start_time': 261.88, 'end_time': 263.008}],
        },
    }, {
        'url': 'https://www.mediasetplay.mediaset.it/video/cameracafe5/episodio-51-tu-chi-sei_F303843107000601',
        'md5': '567e9ad375b7a27a0e370650f572a1e3',
        'info_dict': {
            'id': 'F303843107000601',
            'ext': 'mp4',
            'title': 'Episodio 51 - Tu chi sei?',
            'description': 'md5:42ef006e56824cc31787a547590923f4',
            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 367.021,
            'upload_date': '20200902',
            'series': 'Camera Café 5',
            'timestamp': 1599069817,
            'uploader': 'Italia 1',
            'uploader_id': 'I1',
            'season': 'Season 5',
            'episode': 'Episode 6',
            'season_number': 5,
            'episode_number': 6,
            'chapters': [{'start_time': 0.0, 'end_time': 358.68}, {'start_time': 358.68, 'end_time': 367.021}],
        },
    }, {
        # movie
        'url': 'https://www.mediasetplay.mediaset.it/movie/selvaggi/selvaggi_F006474501000101',
        'md5': '720440187a2ae26af8148eb9e6b901ed',
        'info_dict': {
            'id': 'F006474501000101',
            'ext': 'mp4',
            'title': 'Selvaggi',
            'description': 'md5:cfdedbbfdd12d4d0e5dcf1fa1b75284f',
            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 5233.01,
            'upload_date': '20210729',
            'timestamp': 1627594716,
            'uploader': 'Cine34',
            'uploader_id': 'B6',
            'chapters': [{'start_time': 0.0, 'end_time': 1938.56}, {'start_time': 1938.56, 'end_time': 5233.01}],
        },
    }, {
        # clip
        'url': 'https://www.mediasetplay.mediaset.it/video/gogglebox/un-grande-classico-della-commedia-sexy_FAFU000000661680',
        'only_matching': True,
    }, {
        # iframe simple
        'url': 'https://static3.mediasetplay.mediaset.it/player/index.html?appKey=5ad3966b1de1c4000d5cec48&programGuid=FAFU000000665924&id=665924',
        'only_matching': True,
    }, {
        # iframe twitter (from http://www.wittytv.it/se-prima-mi-fidavo-zero/)
        'url': 'https://static3.mediasetplay.mediaset.it/player/index.html?appKey=5ad3966b1de1c4000d5cec48&programGuid=FAFU000000665104&id=665104',
        'only_matching': True,
    }, {
        # embedUrl (from https://www.wittytv.it/amici/est-ce-que-tu-maimes-gabriele-5-dicembre-copia/)
        'url': 'https://static3.mediasetplay.mediaset.it/player/v2/index.html?partnerId=wittytv&configId=&programGuid=FD00000000153323&autoplay=true&purl=http://www.wittytv.it/amici/est-ce-que-tu-maimes-gabriele-5-dicembre-copia/',
        'only_matching': True,
    }, {
        'url': 'mediaset:FAFU000000665924',
        'only_matching': True,
    }, {
        'url': 'https://www.mediasetplay.mediaset.it/video/mediasethaacuoreilfuturo/palmieri-alicudi-lisola-dei-tre-bambini-felici--un-decreto-per-alicudi-e-tutte-le-microscuole_FD00000000102295',
        'only_matching': True,
    }, {
        'url': 'https://www.mediasetplay.mediaset.it/video/cherryseason/anticipazioni-degli-episodi-del-23-ottobre_F306837101005C02',
        'only_matching': True,
    }, {
        'url': 'https://www.mediasetplay.mediaset.it/video/tg5/ambiente-onda-umana-per-salvare-il-pianeta_F309453601079D01',
        'only_matching': True,
    }, {
        'url': 'https://www.mediasetplay.mediaset.it/video/grandefratellovip/benedetta-una-doccia-gelata_F309344401044C135',
        'only_matching': True,
    }, {
        'url': 'https://www.mediasetplay.mediaset.it/movie/herculeslaleggendahainizio/hercules-la-leggenda-ha-inizio_F305927501000102',
        'only_matching': True,
    }, {
        'url': 'https://mediasetinfinity.mediaset.it/video/braveandbeautiful/episodio-113_F310948005000402',
        'only_matching': True,
    }, {
        'url': 'https://static3.mediasetplay.mediaset.it/player/v2/index.html?partnerId=wittytv&configId=&programGuid=FD00000000153323',
        'only_matching': True,
    }]

    def _extract_from_webpage(self, url, webpage):
        def _program_guid(qs):
            return qs.get('programGuid', [None])[0]

        for mobj in re.finditer(
                r'<iframe\b[^>]+\bsrc=(["\'])(?P<url>(?:https?:)?//(?:www\.)?video\.mediaset\.it/player/playerIFrame(?:Twitter)?\.shtml.*?)\1',
                webpage):
            embed_url = mobj.group('url')
            embed_qs = parse_qs(embed_url)
            program_guid = _program_guid(embed_qs)
            if program_guid:
                yield self.url_result(embed_url)
                continue

            video_id = embed_qs.get('id', [None])[0]
            if not video_id:
                continue
            urlh = self._request_webpage(embed_url, video_id, note='Following embed URL redirect')
            embed_url = urlh.geturl()
            program_guid = _program_guid(parse_qs(embed_url))
            if program_guid:
                yield self.url_result(embed_url)

    def _parse_smil_formats(self, smil, smil_url, video_id, namespace=None, f4m_params=None, transform_rtmp_url=None):
        for video in smil.findall(self._xpath_ns('.//video', namespace)):
            video.attrib['src'] = re.sub(r'(https?://vod05)t(-mediaset-it\.akamaized\.net/.+?.mpd)\?.+', r'\1\2', video.attrib['src'])
        return super(MediasetIE, self)._parse_smil_formats(smil, smil_url, video_id, namespace, f4m_params, transform_rtmp_url)

    def _check_drm_formats(self, tp_formats, video_id):
        has_nondrm, drm_manifest = False, ''
        for f in tp_formats:
            if '_sampleaes/' in (f.get('manifest_url') or ''):
                drm_manifest = drm_manifest or f['manifest_url']
                f['has_drm'] = True
            if not f.get('has_drm') and f.get('manifest_url'):
                has_nondrm = True

        nodrm_manifest = re.sub(r'_sampleaes/(\w+)_fp_', r'/\1_no_', drm_manifest)
        if has_nondrm or nodrm_manifest == drm_manifest:
            return

        tp_formats.extend(self._extract_m3u8_formats(
            nodrm_manifest, video_id, m3u8_id='hls', fatal=False) or [])

    def _real_extract(self, url):
        guid = self._match_id(url)
        tp_path = 'PR1GhC/media/guid/2702976343/' + guid
        info = self._extract_theplatform_metadata(tp_path, guid)

        formats = []
        subtitles = {}
        first_e = geo_e = None
        asset_type = 'geoNo:HD,browser,geoIT|geoNo:HD,geoIT|geoNo:SD,browser,geoIT|geoNo:SD,geoIT|geoNo|HD|SD'
        # TODO: fixup ISM+none manifest URLs
        for f in ('MPEG4', 'M3U'):
            try:
                tp_formats, tp_subtitles = self._extract_theplatform_smil(
                    update_url_query('http://link.theplatform.%s/s/%s' % (self._TP_TLD, tp_path), {
                        'mbr': 'true',
                        'formats': f,
                        'assetTypes': asset_type,
                    }), guid, 'Downloading %s SMIL data' % (f.split('+')[0]))
            except ExtractorError as e:
                if not geo_e and isinstance(e, GeoRestrictedError):
                    geo_e = e
                if not first_e:
                    first_e = e
                continue
            self._check_drm_formats(tp_formats, guid)
            formats.extend(tp_formats)
            subtitles = self._merge_subtitles(subtitles, tp_subtitles)

        # check for errors and report them
        if (first_e or geo_e) and not formats:
            raise geo_e or first_e

        self._sort_formats(formats)

        feed_data = self._download_json(
            'https://feed.entertainment.tv.theplatform.eu/f/PR1GhC/mediaset-prod-all-programs-v2/guid/-/' + guid,
            guid, fatal=False)
        if feed_data:
            publish_info = feed_data.get('mediasetprogram$publishInfo') or {}
            thumbnails = feed_data.get('thumbnails') or {}
            thumbnail = None
            for key, value in thumbnails.items():
                if key.startswith('image_keyframe_poster-'):
                    thumbnail = value.get('url')
                    break

            info.update({
                'description': info.get('description') or feed_data.get('description') or feed_data.get('longDescription'),
                'uploader': publish_info.get('description'),
                'uploader_id': publish_info.get('channel'),
                'view_count': int_or_none(feed_data.get('mediasetprogram$numberOfViews')),
                'thumbnail': thumbnail,
            })

            if feed_data.get('programType') == 'episode':
                info.update({
                    'episode_number': int_or_none(
                        feed_data.get('tvSeasonEpisodeNumber')),
                    'season_number': int_or_none(
                        feed_data.get('tvSeasonNumber')),
                    'series': feed_data.get('mediasetprogram$brandTitle'),
                })

        info.update({
            'id': guid,
            'formats': formats,
            'subtitles': subtitles,
        })
        return info


class MediasetShowIE(MediasetIE):
    _VALID_URL = r'''(?x)
                    (?:
                        https?://
                            (\w+\.)+mediaset\.it/
                            (?:
                                (?:fiction|programmi-tv|serie-tv|kids)/(?:.+?/)?
                                    (?:[a-z-]+)_SE(?P<id>\d{12})
                                    (?:,ST(?P<st>\d{12}))?
                                    (?:,sb(?P<sb>\d{9}))?$
                            )
                    )
                    '''
    _TESTS = [{
        # TV Show webpage (general webpage)
        'url': 'https://www.mediasetplay.mediaset.it/programmi-tv/leiene/leiene_SE000000000061',
        'info_dict': {
            'id': '000000000061',
            'title': 'Le Iene',
        },
        'playlist_mincount': 7,
    }, {
        # TV Show webpage (specific season)
        'url': 'https://www.mediasetplay.mediaset.it/programmi-tv/leiene/leiene_SE000000000061,ST000000002763',
        'info_dict': {
            'id': '000000002763',
            'title': 'Le Iene',
        },
        'playlist_mincount': 7,
    }, {
        # TV Show specific playlist (with multiple pages)
        'url': 'https://www.mediasetplay.mediaset.it/programmi-tv/leiene/iservizi_SE000000000061,ST000000002763,sb100013375',
        'info_dict': {
            'id': '100013375',
            'title': 'I servizi',
        },
        'playlist_mincount': 50,
    }]

    _BY_SUBBRAND = 'https://feed.entertainment.tv.theplatform.eu/f/PR1GhC/mediaset-prod-all-programs-v2?byCustomValue={subBrandId}{%s}&sort=:publishInfo_lastPublished|desc,tvSeasonEpisodeNumber|desc&range=%d-%d'
    _PAGE_SIZE = 25

    def _fetch_page(self, sb, page):
        lower_limit = page * self._PAGE_SIZE + 1
        upper_limit = lower_limit + self._PAGE_SIZE - 1
        content = self._download_json(
            self._BY_SUBBRAND % (sb, lower_limit, upper_limit), sb)
        for entry in content.get('entries') or []:
            yield self.url_result(
                'mediaset:' + entry['guid'],
                playlist_title=entry['mediasetprogram$subBrandDescription'])

    def _real_extract(self, url):
        playlist_id, st, sb = self._match_valid_url(url).group('id', 'st', 'sb')
        if not sb:
            page = self._download_webpage(url, st or playlist_id)
            entries = [self.url_result(urljoin('https://www.mediasetplay.mediaset.it', url))
                       for url in re.findall(r'href="([^<>=]+SE\d{12},ST\d{12},sb\d{9})">[^<]+<', page)]
            title = (self._html_search_regex(r'(?s)<h1[^>]*>(.+?)</h1>', page, 'title', default=None)
                     or self._og_search_title(page))
            return self.playlist_result(entries, st or playlist_id, title)

        entries = OnDemandPagedList(
            functools.partial(self._fetch_page, sb),
            self._PAGE_SIZE)
        title = try_get(entries, lambda x: x[0]['playlist_title'])

        return self.playlist_result(entries, sb, title)
