from .common import InfoExtractor
from ..utils import (
    clean_html,
    get_element_by_class,
    parse_duration,
    strip_or_none,
    unified_strdate,
)


class LibsynIE(InfoExtractor):
    _VALID_URL = r'(?P<mainurl>https?://html5-player\.libsyn\.com/embed/episode/id/(?P<id>[0-9]+))'
    _EMBED_REGEX = [r'<iframe[^>]+src=(["\'])(?P<url>(?:https?:)?//html5-player\.libsyn\.com/embed/.+?)\1']

    _TESTS = [{
        'url': 'http://html5-player.libsyn.com/embed/episode/id/6385796/',
        'md5': '2a55e75496c790cdeb058e7e6c087746',
        'info_dict': {
            'id': '6385796',
            'ext': 'mp3',
            'title': 'The Allistair McCaw Podcast - Developing a Growth Mindset',
            'duration': 834.0,
            'thumbnail': r're:https?://assets\.libsyn\.com/.+',
            'upload_date': '20180320',
        },
    }, {
        'url': 'https://html5-player.libsyn.com/embed/episode/id/3727166/height/75/width/200/theme/standard/direction/no/autoplay/no/autonext/no/thumbnail/no/preload/no/no_addthis/no/',
        'md5': '6c5cb21acd622d754d3b1a92b582ce42',
        'info_dict': {
            'id': '3727166',
            'ext': 'mp3',
            'title': 'Clients From Hell Podcast - How a Sex Toy Company Kickstarted my Freelance Career',
            'thumbnail': r're:https?://assets\.libsyn\.com/.+',
            'upload_date': '20150818',
        },
        'skip': 'Invalid URL',
    }]
    _WEBPAGE_TESTS = [{
        'url': 'https://html5-player.libsyn.com/',
        'md5': '50cff329596b8f674d4449ed077ef2f9',
        'info_dict': {
            'id': '2378831',
            'ext': 'mp3',
            'title': 'md5:54108b15f98e1b4056612c10b50106b2',
            'duration': 3561.0,
            'thumbnail': r're:https?://assets\.libsyn\.com/.+',
            'upload_date': '20130630',
        },
    }, {
        'url': 'https://undergroundwellness.com/podcasts/306-5-steps-to-permanent-gut-healing/',
        'md5': '23576952577f9604520a730d90371761',
        'info_dict': {
            'id': '3793998',
            'ext': 'mp3',
            'title': 'Underground Wellness Radio - Jack Tips: 5 Steps to Permanent Gut Healing',
            'duration': 3989.0,
            'thumbnail': r're:https?://assets\.libsyn\.com/.+',
            'upload_date': '20141126',
        },
    }]

    def _real_extract(self, url):
        url, video_id = self._match_valid_url(url).groups()
        webpage = self._download_webpage(url, video_id)

        data = self._parse_json(self._search_regex(
            r'var\s+playlistItem\s*=\s*({.+?});',
            webpage, 'JSON data block'), video_id)

        episode_title = data.get('item_title') or get_element_by_class('episode-title', webpage)
        if not episode_title:
            self._search_regex(
                [r'data-title="([^"]+)"', r'<title>(.+?)</title>'],
                webpage, 'episode title')
        episode_title = episode_title.strip()

        podcast_title = strip_or_none(clean_html(self._search_regex(
            r'<h3>([^<]+)</h3>', webpage, 'podcast title',
            default=None) or get_element_by_class('podcast-title', webpage)))

        title = f'{podcast_title} - {episode_title}' if podcast_title else episode_title

        formats = []
        for k, format_id in (('media_url_libsyn', 'libsyn'), ('media_url', 'main'), ('download_link', 'download')):
            f_url = data.get(k)
            if not f_url:
                continue
            formats.append({
                'url': f_url,
                'format_id': format_id,
            })

        description = self._html_search_regex(
            r'<p\s+id="info_text_body">(.+?)</p>', webpage,
            'description', default=None)
        if description:
            # Strip non-breaking and normal spaces
            description = description.replace('\u00A0', ' ').strip()
        release_date = unified_strdate(self._search_regex(
            r'<div class="release_date">Released: ([^<]+)<',
            webpage, 'release date', default=None) or data.get('release_date'))

        return {
            'id': video_id,
            'title': title,
            'description': description,
            'thumbnail': data.get('thumbnail_url'),
            'upload_date': release_date,
            'duration': parse_duration(data.get('duration')),
            'formats': formats,
        }