# coding: utf-8
from __future__ import unicode_literals

import random
import re
import string

from .common import InfoExtractor
from ..compat import compat_HTTPError
from ..utils import (
    determine_ext,
    dict_get,
    int_or_none,
    js_to_json,
    urlencode_postdata,
    urljoin,
    ExtractorError,
)


class FunimationIE(InfoExtractor):
    _VALID_URL = r'https?://(?:www\.)?funimation(?:\.com|now\.uk)/(?:[^/]+/)?shows/[^/]+/(?P<id>[^/?#&]+)'

    _NETRC_MACHINE = 'funimation'
    _TOKEN = None

    _TESTS = [{
        'url': 'https://www.funimation.com/shows/hacksign/role-play/',
        'info_dict': {
            'id': '91144',
            'display_id': 'role-play',
            'ext': 'mp4',
            'title': '.hack//SIGN - Role Play',
            'description': 'md5:b602bdc15eef4c9bbb201bb6e6a4a2dd',
            'thumbnail': r're:https?://.*\.jpg',
        },
        'params': {
            # m3u8 download
            'skip_download': True,
        },
    }, {
        'url': 'https://www.funimation.com/shows/attack-on-titan-junior-high/broadcast-dub-preview/',
        'info_dict': {
            'id': '210051',
            'display_id': 'broadcast-dub-preview',
            'ext': 'mp4',
            'title': 'Attack on Titan: Junior High - Broadcast Dub Preview',
            'thumbnail': r're:https?://.*\.(?:jpg|png)',
        },
        'params': {
            # m3u8 download
            'skip_download': True,
        },
    }, {
        'url': 'https://www.funimationnow.uk/shows/puzzle-dragons-x/drop-impact/simulcast/',
        'only_matching': True,
    }, {
        # with lang code
        'url': 'https://www.funimation.com/en/shows/hacksign/role-play/',
        'only_matching': True,
    }]

    def _login(self):
        username, password = self._get_login_info()
        if username is None:
            return
        try:
            data = self._download_json(
                'https://prod-api-funimationnow.dadcdigital.com/api/auth/login/',
                None, 'Logging in', data=urlencode_postdata({
                    'username': username,
                    'password': password,
                }))
            self._TOKEN = data['token']
        except ExtractorError as e:
            if isinstance(e.cause, compat_HTTPError) and e.cause.code == 401:
                error = self._parse_json(e.cause.read().decode(), None)['error']
                raise ExtractorError(error, expected=True)
            raise

    def _real_initialize(self):
        self._login()

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

        def _search_kane(name):
            return self._search_regex(
                r"KANE_customdimensions\.%s\s*=\s*'([^']+)';" % name,
                webpage, name, default=None)

        title_data = self._parse_json(self._search_regex(
            r'TITLE_DATA\s*=\s*({[^}]+})',
            webpage, 'title data', default=''),
            display_id, js_to_json, fatal=False) or {}

        video_id = title_data.get('id') or self._search_regex([
            r"KANE_customdimensions.videoID\s*=\s*'(\d+)';",
            r'<iframe[^>]+src="/player/(\d+)',
        ], webpage, 'video_id', default=None)
        if not video_id:
            player_url = self._html_search_meta([
                'al:web:url',
                'og:video:url',
                'og:video:secure_url',
            ], webpage, fatal=True)
            video_id = self._search_regex(r'/player/(\d+)', player_url, 'video id')

        title = episode = title_data.get('title') or _search_kane('videoTitle') or self._og_search_title(webpage)
        series = _search_kane('showName')
        if series:
            title = '%s - %s' % (series, title)
        description = self._html_search_meta(['description', 'og:description'], webpage, fatal=True)
        subtitles = self.extract_subtitles(url, video_id, display_id)

        try:
            headers = {}
            if self._TOKEN:
                headers['Authorization'] = 'Token %s' % self._TOKEN
            sources = self._download_json(
                'https://www.funimation.com/api/showexperience/%s/' % video_id,
                video_id, headers=headers, query={
                    'pinst_id': ''.join([random.choice(string.digits + string.ascii_letters) for _ in range(8)]),
                })['items']
        except ExtractorError as e:
            if isinstance(e.cause, compat_HTTPError) and e.cause.code == 403:
                error = self._parse_json(e.cause.read(), video_id)['errors'][0]
                raise ExtractorError('%s said: %s' % (
                    self.IE_NAME, error.get('detail') or error.get('title')), expected=True)
            raise

        formats = []
        for source in sources:
            source_url = source.get('src')
            if not source_url:
                continue
            source_type = source.get('videoType') or determine_ext(source_url)
            if source_type == 'm3u8':
                formats.extend(self._extract_m3u8_formats(
                    source_url, video_id, 'mp4',
                    m3u8_id='hls', fatal=False))
            else:
                formats.append({
                    'format_id': source_type,
                    'url': source_url,
                })
        self._sort_formats(formats)

        return {
            'id': video_id,
            'display_id': display_id,
            'title': title,
            'description': description,
            'thumbnail': self._og_search_thumbnail(webpage),
            'series': series,
            'season_number': int_or_none(title_data.get('seasonNum') or _search_kane('season')),
            'episode_number': int_or_none(title_data.get('episodeNum')),
            'episode': episode,
            'subtitles': subtitles,
            'season_id': title_data.get('seriesId'),
            'formats': formats,
        }

    def _get_subtitles(self, url, video_id, display_id):
        player_url = urljoin(url, '/player/' + video_id)
        player_page = self._download_webpage(player_url, display_id)
        text_tracks_json_string = self._search_regex(
            r'"textTracks": (\[{.+?}\])',
            player_page, 'subtitles data', default='')
        text_tracks = self._parse_json(
            text_tracks_json_string, display_id, js_to_json, fatal=False) or []
        subtitles = {}
        for text_track in text_tracks:
            url_element = {'url': text_track.get('src')}
            language = text_track.get('language')
            if text_track.get('type') == 'CC':
                language += '_CC'
            subtitles.setdefault(language, []).append(url_element)
        return subtitles


class FunimationShowIE(FunimationIE):
    IE_NAME = 'funimation:show'
    _VALID_URL = r'(?P<url>https?://(?:www\.)?funimation(?:\.com|now\.uk)/(?P<locale>[^/]+)?/?shows/(?P<id>[^/?#&]+))/?(?:[?#]|$)'

    _TESTS = [{
        'url': 'https://www.funimation.com/en/shows/sk8-the-infinity',
        'info_dict': {
            'id': 1315000,
            'title': 'SK8 the Infinity'
        },
        'playlist_count': 13,
        'params': {
            'skip_download': True,
        },
    }, {
        # without lang code
        'url': 'https://www.funimation.com/shows/ouran-high-school-host-club/',
        'info_dict': {
            'id': 39643,
            'title': 'Ouran High School Host Club'
        },
        'playlist_count': 26,
        'params': {
            'skip_download': True,
        },
    }]

    def _real_extract(self, url):
        base_url, locale, display_id = re.match(self._VALID_URL, url).groups()

        show_info = self._download_json(
            'https://title-api.prd.funimationsvc.com/v2/shows/%s?region=US&deviceType=web&locale=%s'
            % (display_id, locale or 'en'), display_id)
        items = self._download_json(
            'https://prod-api-funimationnow.dadcdigital.com/api/funimation/episodes/?limit=99999&title_id=%s'
            % show_info.get('id'), display_id).get('items')
        vod_items = map(lambda k: dict_get(k, ('mostRecentSvod', 'mostRecentAvod')).get('item'), items)

        return {
            '_type': 'playlist',
            'id': show_info['id'],
            'title': show_info['name'],
            'entries': [
                self.url_result(
                    '%s/%s' % (base_url, vod_item.get('episodeSlug')), FunimationIE.ie_key(),
                    vod_item.get('episodeId'), vod_item.get('episodeName'))
                for vod_item in sorted(vod_items, key=lambda x: x.get('episodeOrder'))],
        }