# coding: utf-8
from __future__ import unicode_literals

import re
import json

from .common import InfoExtractor
from ..compat import (
    compat_str,
    compat_urlparse,
)
from ..utils import (
    ExtractorError,
    int_or_none,
    qualities,
    try_get,
    url_or_none,
)


class ArteTVBaseIE(InfoExtractor):
    _ARTE_LANGUAGES = 'fr|de|en|es|it|pl'
    _API_BASE_V1 = 'https://api.arte.tv/api/player/v1'
    _API_BASE_V2 = 'https://api.arte.tv/api/player/v2'

    def _get_api_authorization_header(self, url):
        """Fetches the Authorization header required for api.arte.tv/api/player/v2"""
        # actually this request is only for making the authorization
        # requirements for api/player/v2 fullfilled, but it contains some
        # metadata too since we have to request this page anyway.
        html_page = self._download_webpage(url, 'dummy_auth_request_with_some_meta')
        page_metadata_json = self._search_regex(
            r'window.__INITIAL_STATE__ = (\{.*\});\n', html_page, 'initial_state')
        if page_metadata_json:
            page_metadata = json.loads(page_metadata_json)
        else:
            page_metadata = {}
            
        manifest_js = self._download_webpage(
            'https://static-cdn.arte.tv/guide/manifest.js', 'arte_api_token')
        token = self._search_regex(
            r'"default":{"token":"([a-zA-Z0-9_-]*)"}', manifest_js, 'token')
        return {
            'page_metadata': page_metadata,
            'headers': {
                'Authorization': 'Bearer %s' % (token),
                'Accept': 'application/json, text/plain, */*',
                'Accept-Language': 'en-GB,en;q=0.8,de-DE;q=0.5,de;q=0.3',
                'Referer': url,
                'Origin': 'https://www.arte.tv',
                'Connection': 'keep-alive',
                'Sec-Fetch-Dest': 'empty',
                'Sec-Fetch-Mode': 'cors',
                'Sec-Fetch-Site': 'same-site',
                'Pragma': 'no-cache',
                'Cache-Control': 'no-cache',
                'TE': 'trailers',
                'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:90.0) Gecko/20100101 Firefox/90.0'
            }
        }


class ArteTVIE(ArteTVBaseIE):
    _VALID_URL = r'''(?x)
                    https?://
                        (?:
                            (?:www\.)?arte\.tv/(?P<lang>%(langs)s)/videos|
                            api\.arte\.tv/api/player/v\d+/config/(?P<lang_2>%(langs)s)
                        )
                        /(?P<id>\d{6}-\d{3}-[AF])
                    ''' % {'langs': ArteTVBaseIE._ARTE_LANGUAGES}
    _TESTS = [{
        'url': 'https://www.arte.tv/en/videos/088501-000-A/mexico-stealing-petrol-to-survive/',
        'info_dict': {
            'id': '088501-000-A',
            'ext': 'mp4',
            'title': 'Mexico: Stealing Petrol to Survive',
            'upload_date': '20190628',
        },
    }, {
        'url': 'https://www.arte.tv/pl/videos/100103-000-A/usa-dyskryminacja-na-porodowce/',
        'only_matching': True,
    }, {
        'url': 'https://api.arte.tv/api/player/v2/config/de/100605-013-A',
        'only_matching': True,
    }]

    def _real_extract(self, url):
        mobj = re.match(self._VALID_URL, url)
        video_id = mobj.group('id')
        lang = mobj.group('lang') or mobj.group('lang_2')

        # legacy for debugging only
        legacy_info = self._download_json(
            '%s/config/%s/%s' % (self._API_BASE_V1, lang, video_id), video_id)
        player_info = legacy_info.get('data')
        vsr = try_get(player_info, lambda x: x['VSR'], dict)

        # v2 api stuff
        auth_data = self._get_api_authorization_header(url)
        info = self._download_json(
            '%s/config/%s/%s' % (self._API_BASE_V2, lang, video_id), video_id, headers=auth_data.get('headers'))
        attributes = info.get('data').get('attributes')
        metadata = attributes.get('metadata')
        streams = attributes.get('streams')

        if not streams or not metadata:
            raise ExtractorError('Required metadata could not be fetched', expected=True)

        info_dict = {
            'id': video_id,
            'title': self._get_full_title(metadata),
            'description': metadata.get('description'),
            'upload_date': self._get_upload_date(attributes.get('rights')),
            'thumbnail': self._get_thumbnail_url(metadata)
        }
  

        import pdb
        pdb.set_trace()

        qfunc = qualities(['MQ', 'HQ', 'EQ', 'SQ'])

        LANGS = {
            'fr': 'F',
            'de': 'A',
            'en': 'E[ANG]',
            'es': 'E[ESP]',
            'it': 'E[ITA]',
            'pl': 'E[POL]',
        }

        langcode = LANGS.get(lang, lang)

        formats = []
        for format_id, format_dict in vsr.items():
            f = dict(format_dict)
            format_url = url_or_none(f.get('url'))
            streamer = f.get('streamer')
            if not format_url and not streamer:
                continue
            versionCode = f.get('versionCode')
            l = re.escape(langcode)

            # Language preference from most to least priority
            # Reference: section 6.8 of
            # https://www.arte.tv/sites/en/corporate/files/complete-technical-guidelines-arte-geie-v1-07-1.pdf
            PREFERENCES = (
                # original version in requested language, without subtitles
                r'VO{0}$'.format(l),
                # original version in requested language, with partial subtitles in requested language
                r'VO{0}-ST{0}$'.format(l),
                # original version in requested language, with subtitles for the deaf and hard-of-hearing in requested language
                r'VO{0}-STM{0}$'.format(l),
                # non-original (dubbed) version in requested language, without subtitles
                r'V{0}$'.format(l),
                # non-original (dubbed) version in requested language, with subtitles partial subtitles in requested language
                r'V{0}-ST{0}$'.format(l),
                # non-original (dubbed) version in requested language, with subtitles for the deaf and hard-of-hearing in requested language
                r'V{0}-STM{0}$'.format(l),
                # original version in requested language, with partial subtitles in different language
                r'VO{0}-ST(?!{0}).+?$'.format(l),
                # original version in requested language, with subtitles for the deaf and hard-of-hearing in different language
                r'VO{0}-STM(?!{0}).+?$'.format(l),
                # original version in different language, with partial subtitles in requested language
                r'VO(?:(?!{0}).+?)?-ST{0}$'.format(l),
                # original version in different language, with subtitles for the deaf and hard-of-hearing in requested language
                r'VO(?:(?!{0}).+?)?-STM{0}$'.format(l),
                # original version in different language, without subtitles
                r'VO(?:(?!{0}))?$'.format(l),
                # original version in different language, with partial subtitles in different language
                r'VO(?:(?!{0}).+?)?-ST(?!{0}).+?$'.format(l),
                # original version in different language, with subtitles for the deaf and hard-of-hearing in different language
                r'VO(?:(?!{0}).+?)?-STM(?!{0}).+?$'.format(l),
            )

            for pref, p in enumerate(PREFERENCES):
                if re.match(p, versionCode):
                    lang_pref = len(PREFERENCES) - pref
                    break
            else:
                lang_pref = -1

            media_type = f.get('mediaType')
            if media_type == 'hls':
                m3u8_formats = self._extract_m3u8_formats(
                    format_url, video_id, 'mp4', entry_protocol='m3u8_native',
                    m3u8_id=format_id, fatal=False)
                for m3u8_format in m3u8_formats:
                    m3u8_format['language_preference'] = lang_pref
                formats.extend(m3u8_formats)
                continue

            format = {
                'format_id': format_id,
                'preference': -10 if f.get('videoFormat') == 'M3U8' else None,
                'language_preference': lang_pref,
                'format_note': '%s, %s' % (f.get('versionCode'), f.get('versionLibelle')),
                'width': int_or_none(f.get('width')),
                'height': int_or_none(f.get('height')),
                'tbr': int_or_none(f.get('bitrate')),
                'quality': qfunc(f.get('quality')),
            }

            if media_type == 'rtmp':
                format['url'] = f['streamer']
                format['play_path'] = 'mp4:' + f['url']
                format['ext'] = 'flv'
            else:
                format['url'] = f['url']

            formats.append(format)

        self._sort_formats(formats)

        return info_dict
        # return {
        #     'id': player_info.get('VID') or video_id,
        #     'title': title,
        #     'description': player_info.get('VDE'),
        #     'upload_date': unified_strdate(upload_date_str),
        #     'thumbnail': player_info.get('programImage') or player_info.get('VTU', {}).get('IUR'),
        #     'formats': formats,
        # }

    def _get_full_title(self, metadata):
        if metadata.get('subtitle'):
            return '%s - %s' % (metadata.get('title'), metadata.get('subtitle'))
        return metadata.get('title')

    def _get_upload_date(self, rights):
        begin = rights.get('begin')
        if not begin:
            return None
        date_part = begin.split('T')[0]
        if not date_part:
            return None
        start_year, start_month, start_day = date_part.split('-')
        return '%s%s%s' % (start_year, start_month, start_day)

    def _get_thumbnail_url(self, metadata):
        images = metadata.get('images')
        if not images or not images[0] or not images[0].get('url'):
            return None
        return images[0].get('url')


class ArteTVEmbedIE(InfoExtractor):
    _VALID_URL = r'https?://(?:www\.)?arte\.tv/player/v\d+/index\.php\?.*?\bjson_url=.+'
    _TESTS = [{
        'url': 'https://www.arte.tv/player/v5/index.php?json_url=https%3A%2F%2Fapi.arte.tv%2Fapi%2Fplayer%2Fv2%2Fconfig%2Fde%2F100605-013-A&lang=de&autoplay=true&mute=0100605-013-A',
        'info_dict': {
            'id': '100605-013-A',
            'ext': 'mp4',
            'title': 'United we Stream November Lockdown Edition #13',
            'description': 'md5:be40b667f45189632b78c1425c7c2ce1',
            'upload_date': '20201116',
        },
    }, {
        'url': 'https://www.arte.tv/player/v3/index.php?json_url=https://api.arte.tv/api/player/v2/config/de/100605-013-A',
        'only_matching': True,
    }]

    @staticmethod
    def _extract_urls(webpage):
        return [url for _, url in re.findall(
            r'<(?:iframe|script)[^>]+src=(["\'])(?P<url>(?:https?:)?//(?:www\.)?arte\.tv/player/v\d+/index\.php\?.*?\bjson_url=.+?)\1',
            webpage)]

    def _real_extract(self, url):
        qs = compat_urlparse.parse_qs(compat_urlparse.urlparse(url).query)
        json_url = qs['json_url'][0]
        video_id = ArteTVIE._match_id(json_url)
        return self.url_result(
            json_url, ie=ArteTVIE.ie_key(), video_id=video_id)


class ArteTVPlaylistIE(ArteTVBaseIE):
    _VALID_URL = r'https?://(?:www\.)?arte\.tv/(?P<lang>%s)/videos/(?P<id>RC-\d{6})' % ArteTVBaseIE._ARTE_LANGUAGES
    _TESTS = [{
        'url': 'https://www.arte.tv/en/videos/RC-016954/earn-a-living/',
        'info_dict': {
            'id': 'RC-016954',
            'title': 'Earn a Living',
            'description': 'md5:d322c55011514b3a7241f7fb80d494c2',
        },
        'playlist_mincount': 6,
    }, {
        'url': 'https://www.arte.tv/pl/videos/RC-014123/arte-reportage/',
        'only_matching': True,
    }]

    def _real_extract(self, url):
        lang, playlist_id = re.match(self._VALID_URL, url).groups()
        collection = self._download_json(
            '%s/collectionData/%s/%s?source=videos'
            % (self._API_BASE_V1, lang, playlist_id), playlist_id)
        entries = []
        for video in collection['videos']:
            if not isinstance(video, dict):
                continue
            video_url = url_or_none(video.get('url')) or url_or_none(video.get('jsonUrl'))
            if not video_url:
                continue
            video_id = video.get('programId')
            entries.append({
                '_type': 'url_transparent',
                'url': video_url,
                'id': video_id,
                'title': video.get('title'),
                'alt_title': video.get('subtitle'),
                'thumbnail': url_or_none(try_get(video, lambda x: x['mainImage']['url'], compat_str)),
                'duration': int_or_none(video.get('durationSeconds')),
                'view_count': int_or_none(video.get('views')),
                'ie_key': ArteTVIE.ie_key(),
            })
        title = collection.get('title')
        description = collection.get('shortDescription') or collection.get('teaserText')
        return self.playlist_result(entries, playlist_id, title, description)