import math

from .common import InfoExtractor
from ..compat import (
    compat_urllib_parse_urlparse,
    compat_parse_qs,
)
from ..utils import (
    format_field,
    InAdvancePagedList,
    traverse_obj,
    unified_timestamp,
)


class BanByeBaseIE(InfoExtractor):
    _API_BASE = 'https://api.banbye.com'
    _CDN_BASE = 'https://cdn.banbye.com'
    _VIDEO_BASE = 'https://banbye.com/watch'

    @staticmethod
    def _extract_playlist_id(url, param='playlist'):
        return compat_parse_qs(
            compat_urllib_parse_urlparse(url).query).get(param, [None])[0]

    def _extract_playlist(self, playlist_id):
        data = self._download_json(f'{self._API_BASE}/playlists/{playlist_id}', playlist_id)
        return self.playlist_result([
            self.url_result(f'{self._VIDEO_BASE}/{video_id}', BanByeIE)
            for video_id in data['videoIds']], playlist_id, data.get('name'))


class BanByeIE(BanByeBaseIE):
    _VALID_URL = r'https?://(?:www\.)?banbye.com/(?:en/)?watch/(?P<id>\w+)'
    _TESTS = [{
        'url': 'https://banbye.com/watch/v_ytfmvkVYLE8T',
        'md5': '2f4ea15c5ca259a73d909b2cfd558eb5',
        'info_dict': {
            'id': 'v_ytfmvkVYLE8T',
            'ext': 'mp4',
            'title': 'md5:5ec098f88a0d796f987648de6322ba0f',
            'description': 'md5:4d94836e73396bc18ef1fa0f43e5a63a',
            'uploader': 'wRealu24',
            'channel_id': 'ch_wrealu24',
            'channel_url': 'https://banbye.com/channel/ch_wrealu24',
            'timestamp': 1647604800,
            'upload_date': '20220318',
            'duration': 1931,
            'thumbnail': r're:https?://.*\.webp',
            'tags': 'count:5',
            'like_count': int,
            'dislike_count': int,
            'view_count': int,
            'comment_count': int,
        },
    }, {
        'url': 'https://banbye.com/watch/v_2JjQtqjKUE_F?playlistId=p_Ld82N6gBw_OJ',
        'info_dict': {
            'title': 'Krzysztof Karoń',
            'id': 'p_Ld82N6gBw_OJ',
        },
        'playlist_count': 9,
    }]

    def _real_extract(self, url):
        video_id = self._match_id(url)
        playlist_id = self._extract_playlist_id(url, 'playlistId')

        if self._yes_playlist(playlist_id, video_id):
            return self._extract_playlist(playlist_id)

        data = self._download_json(f'{self._API_BASE}/videos/{video_id}', video_id)
        thumbnails = [{
            'id': f'{quality}p',
            'url': f'{self._CDN_BASE}/video/{video_id}/{quality}.webp',
        } for quality in [48, 96, 144, 240, 512, 1080]]
        formats = [{
            'format_id': f'http-{quality}p',
            'quality': quality,
            'url': f'{self._CDN_BASE}/video/{video_id}/{quality}.mp4',
        } for quality in data['quality']]

        return {
            'id': video_id,
            'title': data.get('title'),
            'description': data.get('desc'),
            'uploader': traverse_obj(data, ('channel', 'name')),
            'channel_id': data.get('channelId'),
            'channel_url': format_field(data, 'channelId', 'https://banbye.com/channel/%s'),
            'timestamp': unified_timestamp(data.get('publishedAt')),
            'duration': data.get('duration'),
            'tags': data.get('tags'),
            'formats': formats,
            'thumbnails': thumbnails,
            'like_count': data.get('likes'),
            'dislike_count': data.get('dislikes'),
            'view_count': data.get('views'),
            'comment_count': data.get('commentCount'),
        }


class BanByeChannelIE(BanByeBaseIE):
    _VALID_URL = r'https?://(?:www\.)?banbye.com/(?:en/)?channel/(?P<id>\w+)'
    _TESTS = [{
        'url': 'https://banbye.com/channel/ch_wrealu24',
        'info_dict': {
            'title': 'wRealu24',
            'id': 'ch_wrealu24',
            'description': 'md5:da54e48416b74dfdde20a04867c0c2f6',
        },
        'playlist_mincount': 791,
    }, {
        'url': 'https://banbye.com/channel/ch_wrealu24?playlist=p_Ld82N6gBw_OJ',
        'info_dict': {
            'title': 'Krzysztof Karoń',
            'id': 'p_Ld82N6gBw_OJ',
        },
        'playlist_count': 9,
    }]
    _PAGE_SIZE = 100

    def _real_extract(self, url):
        channel_id = self._match_id(url)
        playlist_id = self._extract_playlist_id(url)

        if playlist_id:
            return self._extract_playlist(playlist_id)

        def page_func(page_num):
            data = self._download_json(f'{self._API_BASE}/videos', channel_id, query={
                'channelId': channel_id,
                'sort': 'new',
                'limit': self._PAGE_SIZE,
                'offset': page_num * self._PAGE_SIZE,
            }, note=f'Downloading page {page_num+1}')
            return [
                self.url_result(f"{self._VIDEO_BASE}/{video['_id']}", BanByeIE)
                for video in data['items']
            ]

        channel_data = self._download_json(f'{self._API_BASE}/channels/{channel_id}', channel_id)
        entries = InAdvancePagedList(
            page_func,
            math.ceil(channel_data['videoCount'] / self._PAGE_SIZE),
            self._PAGE_SIZE)

        return self.playlist_result(
            entries, channel_id, channel_data.get('name'), channel_data.get('description'))
