import functools
import re

from .common import InfoExtractor
from ..networking.exceptions import HTTPError
from ..utils import (
    ExtractorError,
    int_or_none,
    smuggle_url,
    unsmuggle_url,
    url_or_none,
)


class EaglePlatformIE(InfoExtractor):
    _VALID_URL = r'''(?x)
                    (?:
                        eagleplatform:(?P<custom_host>[^/]+):|
                        https?://(?P<host>.+?\.media\.eagleplatform\.com)/index/player\?.*\brecord_id=
                    )
                    (?P<id>\d+)
                '''
    _EMBED_REGEX = [r'<iframe[^>]+src=(["\'])(?P<url>(?:https?:)?//.+?\.media\.eagleplatform\.com/index/player\?.+?)\1']
    _TESTS = [{
        # http://lenta.ru/news/2015/03/06/navalny/
        'url': 'http://lentaru.media.eagleplatform.com/index/player?player=new&record_id=227304&player_template_id=5201',
        # Not checking MD5 as sometimes the direct HTTP link results in 404 and HLS is used
        'info_dict': {
            'id': '227304',
            'ext': 'mp4',
            'title': 'Навальный вышел на свободу',
            'description': 'md5:d97861ac9ae77377f3f20eaf9d04b4f5',
            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 87,
            'view_count': int,
            'age_limit': 0,
        },
    }, {
        # http://muz-tv.ru/play/7129/
        # http://media.clipyou.ru/index/player?record_id=12820&width=730&height=415&autoplay=true
        'url': 'eagleplatform:media.clipyou.ru:12820',
        'md5': '358597369cf8ba56675c1df15e7af624',
        'info_dict': {
            'id': '12820',
            'ext': 'mp4',
            'title': "'O Sole Mio",
            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 216,
            'view_count': int,
        },
        'skip': 'Georestricted',
    }, {
        # referrer protected video (https://tvrain.ru/lite/teleshow/kak_vse_nachinalos/namin-418921/)
        'url': 'eagleplatform:tvrainru.media.eagleplatform.com:582306',
        'only_matching': True,
    }]

    @classmethod
    def _extract_embed_urls(cls, url, webpage):
        add_referer = functools.partial(smuggle_url, data={'referrer': url})

        res = tuple(super()._extract_embed_urls(url, webpage))
        if res:
            return map(add_referer, res)

        PLAYER_JS_RE = r'''
                        <script[^>]+
                            src=(?P<qjs>["\'])(?:https?:)?//(?P<host>(?:(?!(?P=qjs)).)+\.media\.eagleplatform\.com)/player/player\.js(?P=qjs)
                        .+?
                    '''
        # "Basic usage" embedding (see http://dultonmedia.github.io/eplayer/)
        mobj = re.search(
            r'''(?xs)
                    %s
                    <div[^>]+
                        class=(?P<qclass>["\'])eagleplayer(?P=qclass)[^>]+
                        data-id=["\'](?P<id>\d+)
            ''' % PLAYER_JS_RE, webpage)
        if mobj is not None:
            return [add_referer('eagleplatform:%(host)s:%(id)s' % mobj.groupdict())]
        # Generalization of "Javascript code usage", "Combined usage" and
        # "Usage without attaching to DOM" embeddings (see
        # http://dultonmedia.github.io/eplayer/)
        mobj = re.search(
            r'''(?xs)
                    %s
                    <script>
                    .+?
                    new\s+EaglePlayer\(
                        (?:[^,]+\s*,\s*)?
                        {
                            .+?
                            \bid\s*:\s*["\']?(?P<id>\d+)
                            .+?
                        }
                    \s*\)
                    .+?
                    </script>
            ''' % PLAYER_JS_RE, webpage)
        if mobj is not None:
            return [add_referer('eagleplatform:%(host)s:%(id)s' % mobj.groupdict())]

    @staticmethod
    def _handle_error(response):
        status = int_or_none(response.get('status', 200))
        if status != 200:
            raise ExtractorError(' '.join(response['errors']), expected=True)

    def _download_json(self, url_or_request, video_id, *args, **kwargs):
        try:
            response = super(EaglePlatformIE, self)._download_json(
                url_or_request, video_id, *args, **kwargs)
        except ExtractorError as ee:
            if isinstance(ee.cause, HTTPError):
                response = self._parse_json(ee.cause.response.read().decode('utf-8'), video_id)
                self._handle_error(response)
            raise
        return response

    def _get_video_url(self, url_or_request, video_id, note='Downloading JSON metadata'):
        return self._download_json(url_or_request, video_id, note)['data'][0]

    def _real_extract(self, url):
        url, smuggled_data = unsmuggle_url(url, {})

        mobj = self._match_valid_url(url)
        host, video_id = mobj.group('custom_host') or mobj.group('host'), mobj.group('id')

        headers = {}
        query = {
            'id': video_id,
        }

        referrer = smuggled_data.get('referrer')
        if referrer:
            headers['Referer'] = referrer
            query['referrer'] = referrer

        player_data = self._download_json(
            'http://%s/api/player_data' % host, video_id,
            headers=headers, query=query)

        media = player_data['data']['playlist']['viewports'][0]['medialist'][0]

        title = media['title']
        description = media.get('description')
        thumbnail = self._proto_relative_url(media.get('snapshot'), 'http:')
        duration = int_or_none(media.get('duration'))
        view_count = int_or_none(media.get('views'))

        age_restriction = media.get('age_restriction')
        age_limit = None
        if age_restriction:
            age_limit = 0 if age_restriction == 'allow_all' else 18

        secure_m3u8 = self._proto_relative_url(media['sources']['secure_m3u8']['auto'], 'http:')

        formats = []

        m3u8_url = self._get_video_url(secure_m3u8, video_id, 'Downloading m3u8 JSON')
        m3u8_formats = self._extract_m3u8_formats(
            m3u8_url, video_id, 'mp4', entry_protocol='m3u8_native',
            m3u8_id='hls', fatal=False)
        formats.extend(m3u8_formats)

        m3u8_formats_dict = {}
        for f in m3u8_formats:
            if f.get('height') is not None:
                m3u8_formats_dict[f['height']] = f

        mp4_data = self._download_json(
            # Secure mp4 URL is constructed according to Player.prototype.mp4 from
            # http://lentaru.media.eagleplatform.com/player/player.js
            re.sub(r'm3u8|hlsvod|hls|f4m', 'mp4s', secure_m3u8),
            video_id, 'Downloading mp4 JSON', fatal=False)
        if mp4_data:
            for format_id, format_url in mp4_data.get('data', {}).items():
                if not url_or_none(format_url):
                    continue
                height = int_or_none(format_id)
                if height is not None and m3u8_formats_dict.get(height):
                    f = m3u8_formats_dict[height].copy()
                    f.update({
                        'format_id': f['format_id'].replace('hls', 'http'),
                        'protocol': 'http',
                    })
                else:
                    f = {
                        'format_id': 'http-%s' % format_id,
                        'height': int_or_none(format_id),
                    }
                f['url'] = format_url
                formats.append(f)

        return {
            'id': video_id,
            'title': title,
            'description': description,
            'thumbnail': thumbnail,
            'duration': duration,
            'view_count': view_count,
            'age_limit': age_limit,
            'formats': formats,
        }


class ClipYouEmbedIE(InfoExtractor):
    _VALID_URL = False

    @classmethod
    def _extract_embed_urls(cls, url, webpage):
        mobj = re.search(
            r'<iframe[^>]+src="https?://(?P<host>media\.clipyou\.ru)/index/player\?.*\brecord_id=(?P<id>\d+).*"', webpage)
        if mobj is not None:
            yield smuggle_url('eagleplatform:%(host)s:%(id)s' % mobj.groupdict(), {'referrer': url})
