Repository: yt-dlp/yt-dlp
File: yt_dlp/extractor/pandatv.py (Python)

Code before:
        'info_dict': {
            'id': 'bebenim',
            'ext': 'mp4',
            'channel': '릴리ෆ',
            'title': r're:앙앙❤ \d{4}-\d{2}-\d{2} \d{2}:\d{2}',
            'thumbnail': r're:https://cdn\.pandalive\.co\.kr/ivs/v1/.+/thumb.jpg',
            'concurrent_view_count': int,
            'like_count': int,
            'live_status': 'is_live',
            'upload_date': str,
        },
        'skip': 'The channel is not currently live',
    }]

    def _real_extract(self, url):
        channel_id = self._match_id(url)
        http_headers = {'Origin': 'https://www.pandalive.co.kr'}

        video_meta = self._download_json(
            'https://api.pandalive.co.kr/v1/live/play', channel_id,
            'Downloading video meta data', 'Unable to download video meta data',
            data=urlencode_postdata({
                'action': 'watch',
                'userId': channel_id,
                'password': self.get_param('videopassword'),
                'shareLinkType': '',
            }), expected_status=400)

        if not video_meta.get('result'):
            error_code = traverse_obj(video_meta, ('errorData', 'code', {str}))
            if error_code == 'castEnd':
                raise UserNotLive(video_id=channel_id)
            elif error_code == 'needAdult':
                self.raise_login_required('Adult verification is required for this stream')
            elif error_code == 'needLogin':
                self.raise_login_required('Login is required for this stream')
            elif error_code == 'needCoinPurchase':
                raise ExtractorError('Coin purchase is required for this stream', expected=True)
            elif error_code == 'needUnlimitItem':
                raise ExtractorError('Ticket purchase is required for this stream', expected=True)
            elif error_code == 'wrongPw':
                raise ExtractorError('Password protected video, use --video-password <password>', expected=True)
            else:
                raise ExtractorError(f'API returned an error code: {error_code}')

        return {
            'id': channel_id,
            'is_live': True,
            'formats': self._extract_m3u8_formats(
                video_meta['PlayList']['hls'][0]['url'], channel_id, 'mp4', headers=http_headers, live=True),
            'http_headers': http_headers,

Review comment (bug):
`password=None` is acceptable? shouldn't we use `filter_dict` here? it looks like we are catching the error code for "wrong password" and treating it as "no password". we need to filter the dict and catch error codes for both "wrong password" and "no password" and handle them separately

Code after:
    _VALID_URL = r'https?://(?:www\.|m\.)?pandalive\.co\.kr/play/(?P<id>\w+)'
    _TESTS = [{
        'url': 'https://www.pandalive.co.kr/play/bebenim',
        'info_dict': {
            'id': 'bebenim',
            'ext': 'mp4',
            'channel': '릴리ෆ',
            'title': r're:앙앙❤ \d{4}-\d{2}-\d{2} \d{2}:\d{2}',
            'thumbnail': r're:https://cdn\.pandalive\.co\.kr/ivs/v1/.+/thumb\.jpg',
            'concurrent_view_count': int,
            'like_count': int,
            'live_status': 'is_live',
            'upload_date': str,
        },
        'skip': 'The channel is not currently live',
    }]

    def _real_extract(self, url):
        channel_id = self._match_id(url)
        video_meta = self._download_json(
            'https://api.pandalive.co.kr/v1/live/play', channel_id,
            'Downloading video meta data', 'Unable to download video meta data',
            data=urlencode_postdata(filter_dict({
                'action': 'watch',
                'userId': channel_id,
                'password': self.get_param('videopassword'),
            })), expected_status=400)

        if error_code := traverse_obj(video_meta, ('errorData', 'code', {str})):
            if error_code == 'castEnd':
                raise UserNotLive(video_id=channel_id)
            elif error_code == 'needAdult':
                self.raise_login_required('Adult verification is required for this stream')
            elif error_code == 'needLogin':
                self.raise_login_required('Login is required for this stream')
            elif error_code == 'needCoinPurchase':
                raise ExtractorError('Coin purchase is required for this stream', expected=True)
            elif error_code == 'needUnlimitItem':
                raise ExtractorError('Ticket purchase is required for this stream', expected=True)
            elif error_code == 'needPw':
                raise ExtractorError('Password protected video, use --video-password <password>', expected=True)
            elif error_code == 'wrongPw':
                raise ExtractorError('Wrong password', expected=True)
            else:
                error_msg = video_meta.get('message')
                raise ExtractorError(join_nonempty(
                    'API returned error code', error_code,
                    error_msg and 'with error message:', error_msg,
                    delim=' '))

        http_headers = {'Origin': 'https://www.pandalive.co.kr'}