import json

from .gigya import GigyaBaseIE
from ..compat import compat_HTTPError
from ..utils import (
    ExtractorError,
    float_or_none,
    str_or_none,
    url_or_none,
    urlencode_postdata
)


class VRTIE(GigyaBaseIE):
    IE_DESC = 'VRT'
    _VALID_URL = r'https?://(?:www\.)?vrt\.be/vrtnu/a-z/(?P<id>.+)/?'
    _TESTS = [{
        'url': 'https://www.vrt.be/vrtnu/a-z/heizel-1985/trailer/heizel-1985-trailer/',
        'info_dict': {
            'id': 'pbs-pub-e1d6e4ec-cbf4-451e-9e87-d835bb65cd28$vid-2ad45eb6-9bc8-40d4-ad72-5f25c0f59d75',
            'title': 'Trailer \'Heizel 1985\'',
            'thumbnail': 'https://images.vrt.be/orig/2022/09/07/6e44ce6f-2eb3-11ed-b07d-02b7b76bf47f.jpg',
            'duration': 41.05
        },
    }]
    _NETRC_MACHINE = 'vrtnu'
    _APIKEY = '3_0Z2HujMtiWq_pkAjgnS2Md2E11a1AwZjYiBETtwNE-EoEHDINgtnvcAOpNgmrVGy'
    _CONTEXT_ID = 'R3595707040'
    _REST_API_BASE_TOKEN = 'https://media-services-public.vrt.be/vualto-video-aggregator-web/rest/external/v2'
    _REST_API_BASE_VIDEO = 'https://media-services-public.vrt.be/media-aggregator/v2'
    _HLS_ENTRY_PROTOCOLS_MAP = {
        'HLS': 'm3u8_native',
        'HLS_AES': 'm3u8_native',
    }

    _authenticated = False

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

        if auth_info.get('errorDetails'):
            raise ExtractorError('Unable to login: VrtNU said: ' + auth_info.get('errorDetails'), expected=True)

        # Sometimes authentication fails for no good reason, retry
        login_attempt = 1
        while login_attempt <= 3:
            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/'})

                post_data = {
                    'UID': auth_info['UID'],
                    'UIDSignature': auth_info['UIDSignature'],
                    'signatureTimestamp': auth_info['signatureTimestamp'],
                    '_csrf': self._get_cookies('https://login.vrt.be').get('OIDCXSRF').value,
                }

                self._request_webpage(
                    'https://login.vrt.be/perform_login',
                    None, note='Performing login', errnote='perform login failed',
                    headers={}, query={
                        'client_id': 'vrtnu-site'
                    }, data=urlencode_postdata(post_data))

            except ExtractorError as e:
                if isinstance(e.cause, compat_HTTPError) and e.cause.code == 401:
                    login_attempt += 1
                    self.report_warning('Authentication failed')
                    self._sleep(1, None, msg_template='Waiting for %(timeout)s seconds before trying again')
                else:
                    raise e
            else:
                break

        self._authenticated = True

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

        episode_data = self._download_json(f'{url.strip("/")}.model.json', display_id,
                                           'Downloading asset JSON', 'Unable to download asset JSON')
        details = episode_data.get('details')
        actions = details.get('actions')
        episode_publication_id = actions[2].get('episodePublicationId')
        episode_video_id = actions[2].get('episodeVideoId')
        video_id = f'{episode_publication_id}${episode_video_id}'

        data = None
        vrtnutoken = ""

        if self._authenticated:
            vrtnutoken = self._download_json('https://token.vrt.be/refreshtoken',
                                             video_id, note='refreshtoken: Retrieve vrtnutoken',
                                             errnote='refreshtoken failed')['vrtnutoken']

        headers = self.geo_verification_headers()
        headers.update({'Content-Type': 'application/json; charset=utf-8'})
        vrtPlayerToken = self._download_json(
            '%s/tokens' % self._REST_API_BASE_TOKEN, video_id,
            'Downloading token', headers=headers, data=json.dumps({
                'identityToken': vrtnutoken
            }).encode('utf-8'))['vrtPlayerToken']

        data = self._download_json(
            '%s/media-items/%s' % (self._REST_API_BASE_VIDEO, video_id),
            video_id, 'Downloading video JSON', query={
                'vrtPlayerToken': vrtPlayerToken,
                'client': 'vrtnu-web@PROD',
            }, expected_status=400)
        if 'title' not in data:
            code = data.get('code')
            if code == 'AUTHENTICATION_REQUIRED':
                self.raise_login_required()
            elif code == 'INVALID_LOCATION':
                self.raise_geo_restricted(countries=['BE'])
            raise ExtractorError(data.get('message') or code, expected=True)

        # Note: The title may be an empty string
        title = data['title'] or f'{video_id}'
        description = data.get('description')

        formats = []
        subtitles = {}
        for target in data['targetUrls']:
            format_url, format_type = url_or_none(target.get('url')), str_or_none(target.get('type'))
            if not format_url or not format_type:
                continue
            format_type = format_type.upper()
            if format_type in self._HLS_ENTRY_PROTOCOLS_MAP:
                fmts, subs = self._extract_m3u8_formats_and_subtitles(
                    format_url, video_id, 'mp4', self._HLS_ENTRY_PROTOCOLS_MAP[format_type],
                    m3u8_id=format_type, fatal=False)
                formats.extend(fmts)
                subtitles = self._merge_subtitles(subtitles, subs)
            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)
                subtitles = self._merge_subtitles(subtitles, subs)
            elif format_type == 'HSS':
                fmts, subs = self._extract_ism_formats_and_subtitles(
                    format_url, video_id, ism_id='mss', fatal=False)
                formats.extend(fmts)
                subtitles = self._merge_subtitles(subtitles, subs)
            else:
                formats.append({
                    'format_id': format_type,
                    'url': format_url,
                })
        self._sort_formats(formats)

        subtitle_urls = data.get('subtitleUrls')
        if isinstance(subtitle_urls, list):
            for subtitle in subtitle_urls:
                subtitle_url = subtitle.get('url')
                if subtitle_url and subtitle.get('type') == 'CLOSED':
                    subtitles.setdefault('nl', []).append({'url': subtitle_url})

        return {
            'id': video_id,
            'display_id': video_id,
            'title': title,
            'description': description,
            'formats': formats,
            'duration': float_or_none(data.get('duration'), 1000),
            'thumbnail': data.get('posterImageUrl'),
            'subtitles': subtitles,
        }