# encoding: utf-8
from __future__ import unicode_literals

import re

from .common import InfoExtractor
from ..utils import (
    find_xpath_attr,
    unified_strdate,
    get_element_by_id,
    get_element_by_attribute,
    int_or_none,
    qualities,
)

# There are different sources of video in arte.tv, the extraction process
# is different for each one. The videos usually expire in 7 days, so we can't
# add tests.


class ArteTvIE(InfoExtractor):
    _VALID_URL = r'http://videos\.arte\.tv/(?P<lang>fr|de)/.*-(?P<id>.*?)\.html'
    IE_NAME = 'arte.tv'

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

        ref_xml_url = url.replace('/videos/', '/do_delegate/videos/')
        ref_xml_url = ref_xml_url.replace('.html', ',view,asPlayerXml.xml')
        ref_xml_doc = self._download_xml(
            ref_xml_url, video_id, note='Downloading metadata')
        config_node = find_xpath_attr(ref_xml_doc, './/video', 'lang', lang)
        config_xml_url = config_node.attrib['ref']
        config = self._download_xml(
            config_xml_url, video_id, note='Downloading configuration')

        formats = [{
            'format_id': q.attrib['quality'],
            # The playpath starts at 'mp4:', if we don't manually
            # split the url, rtmpdump will incorrectly parse them
            'url': q.text.split('mp4:', 1)[0],
            'play_path': 'mp4:' + q.text.split('mp4:', 1)[1],
            'ext': 'flv',
            'quality': 2 if q.attrib['quality'] == 'hd' else 1,
        } for q in config.findall('./urls/url')]
        self._sort_formats(formats)

        title = config.find('.//name').text
        thumbnail = config.find('.//firstThumbnailUrl').text
        return {
            'id': video_id,
            'title': title,
            'thumbnail': thumbnail,
            'formats': formats,
        }


class ArteTVPlus7IE(InfoExtractor):
    IE_NAME = 'arte.tv:+7'
    _VALID_URL = r'https?://(?:www\.)?arte\.tv/guide/(?P<lang>fr|de)/(?:(?:sendungen|emissions)/)?(?P<id>.*?)/(?P<name>.*?)(\?.*)?'

    @classmethod
    def _extract_url_info(cls, url):
        mobj = re.match(cls._VALID_URL, url)
        lang = mobj.group('lang')
        # This is not a real id, it can be for example AJT for the news
        # http://www.arte.tv/guide/fr/emissions/AJT/arte-journal
        video_id = mobj.group('id')
        return video_id, lang

    def _real_extract(self, url):
        video_id, lang = self._extract_url_info(url)
        webpage = self._download_webpage(url, video_id)
        return self._extract_from_webpage(webpage, video_id, lang)

    def _extract_from_webpage(self, webpage, video_id, lang):
        json_url = self._html_search_regex(
            [r'arte_vp_url=["\'](.*?)["\']', r'data-url=["\']([^"]+)["\']'],
            webpage, 'json vp url')
        return self._extract_from_json_url(json_url, video_id, lang)

    def _extract_from_json_url(self, json_url, video_id, lang):
        info = self._download_json(json_url, video_id)
        player_info = info['videoJsonPlayer']

        upload_date_str = player_info.get('shootingDate')
        if not upload_date_str:
            upload_date_str = player_info.get('VDA', '').split(' ')[0]

        title = player_info['VTI'].strip()
        subtitle = player_info.get('VSU', '').strip()
        if subtitle:
            title += ' - %s' % subtitle

        info_dict = {
            'id': player_info['VID'],
            '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'),
        }
        qfunc = qualities(['HQ', 'MQ', 'EQ', 'SQ'])

        formats = []
        for format_id, format_dict in player_info['VSR'].items():
            f = dict(format_dict)
            versionCode = f.get('versionCode')

            langcode = {
                'fr': 'F',
                'de': 'A',
            }.get(lang, lang)
            lang_rexs = [r'VO?%s' % langcode, r'VO?.-ST%s' % langcode]
            lang_pref = (
                None if versionCode is None else (
                    10 if any(re.match(r, versionCode) for r in lang_rexs)
                    else -10))
            source_pref = 0
            if versionCode is not None:
                # The original version with subtitles has lower relevance
                if re.match(r'VO-ST(F|A)', versionCode):
                    source_pref -= 10
                # The version with sourds/mal subtitles has also lower relevance
                elif re.match(r'VO?(F|A)-STM\1', versionCode):
                    source_pref -= 9
            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')),
                'source_preference': source_pref,
            }

            if f.get('mediaType') == 'rtmp':
                format['url'] = f['streamer']
                format['play_path'] = 'mp4:' + f['url']
                format['ext'] = 'flv'
            else:
                format['url'] = f['url']

            formats.append(format)

        self._check_formats(formats, video_id)
        self._sort_formats(formats)

        info_dict['formats'] = formats
        return info_dict


# It also uses the arte_vp_url url from the webpage to extract the information
class ArteTVCreativeIE(ArteTVPlus7IE):
    IE_NAME = 'arte.tv:creative'
    _VALID_URL = r'https?://creative\.arte\.tv/(?P<lang>fr|de)/(?:magazine?/)?(?P<id>[^?#]+)'

    _TESTS = [{
        'url': 'http://creative.arte.tv/de/magazin/agentur-amateur-corporate-design',
        'info_dict': {
            'id': '72176',
            'ext': 'mp4',
            'title': 'Folge 2 - Corporate Design',
            'upload_date': '20131004',
        },
    }, {
        'url': 'http://creative.arte.tv/fr/Monty-Python-Reunion',
        'info_dict': {
            'id': '160676',
            'ext': 'mp4',
            'title': 'Monty Python live (mostly)',
            'description': 'Événement ! Quarante-cinq ans après leurs premiers succès, les légendaires Monty Python remontent sur scène.\n',
            'upload_date': '20140805',
        }
    }]


class ArteTVFutureIE(ArteTVPlus7IE):
    IE_NAME = 'arte.tv:future'
    _VALID_URL = r'https?://future\.arte\.tv/(?P<lang>fr|de)/(thema|sujet)/.*?#article-anchor-(?P<id>\d+)'

    _TEST = {
        'url': 'http://future.arte.tv/fr/sujet/info-sciences#article-anchor-7081',
        'info_dict': {
            'id': '5201',
            'ext': 'mp4',
            'title': 'Les champignons au secours de la planète',
            'upload_date': '20131101',
        },
    }

    def _real_extract(self, url):
        anchor_id, lang = self._extract_url_info(url)
        webpage = self._download_webpage(url, anchor_id)
        row = get_element_by_id(anchor_id, webpage)
        return self._extract_from_webpage(row, anchor_id, lang)


class ArteTVDDCIE(ArteTVPlus7IE):
    IE_NAME = 'arte.tv:ddc'
    _VALID_URL = r'https?://ddc\.arte\.tv/(?P<lang>emission|folge)/(?P<id>.+)'

    def _real_extract(self, url):
        video_id, lang = self._extract_url_info(url)
        if lang == 'folge':
            lang = 'de'
        elif lang == 'emission':
            lang = 'fr'
        webpage = self._download_webpage(url, video_id)
        scriptElement = get_element_by_attribute('class', 'visu_video_block', webpage)
        script_url = self._html_search_regex(r'src="(.*?)"', scriptElement, 'script url')
        javascriptPlayerGenerator = self._download_webpage(script_url, video_id, 'Download javascript player generator')
        json_url = self._search_regex(r"json_url=(.*)&rendering_place.*", javascriptPlayerGenerator, 'json url')
        return self._extract_from_json_url(json_url, video_id, lang)


class ArteTVConcertIE(ArteTVPlus7IE):
    IE_NAME = 'arte.tv:concert'
    _VALID_URL = r'https?://concert\.arte\.tv/(?P<lang>de|fr)/(?P<id>.+)'

    _TEST = {
        'url': 'http://concert.arte.tv/de/notwist-im-pariser-konzertclub-divan-du-monde',
        'md5': '9ea035b7bd69696b67aa2ccaaa218161',
        'info_dict': {
            'id': '186',
            'ext': 'mp4',
            'title': 'The Notwist im Pariser Konzertclub "Divan du Monde"',
            'upload_date': '20140128',
            'description': 'md5:486eb08f991552ade77439fe6d82c305',
        },
    }


class ArteTVEmbedIE(ArteTVPlus7IE):
    IE_NAME = 'arte.tv:embed'
    _VALID_URL = r'''(?x)
        http://www\.arte\.tv
        /playerv2/embed\.php\?json_url=
        (?P<json_url>
            http://arte\.tv/papi/tvguide/videos/stream/player/
            (?P<lang>[^/]+)/(?P<id>[^/]+)[^&]*
        )
    '''

    def _real_extract(self, url):
        mobj = re.match(self._VALID_URL, url)
        video_id = mobj.group('id')
        lang = mobj.group('lang')
        json_url = mobj.group('json_url')
        return self._extract_from_json_url(json_url, video_id, lang)
