From 07ea0014aedb9086d5c864c8f874585ba750cf7a Mon Sep 17 00:00:00 2001
From: "Lesmiscore (Naoya Ozaki)" <nao20010128@gmail.com>
Date: Wed, 16 Feb 2022 20:32:14 +0900
Subject: [PATCH] [twitcasting] Add fallback for finding running live (#2803)

Authored by: Lesmiscore
---
 yt_dlp/extractor/twitcasting.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/yt_dlp/extractor/twitcasting.py b/yt_dlp/extractor/twitcasting.py
index 98ef330cb..08222df95 100644
--- a/yt_dlp/extractor/twitcasting.py
+++ b/yt_dlp/extractor/twitcasting.py
@@ -220,6 +220,17 @@ def _real_extract(self, url):
             (r'data-type="movie" data-id="(\d+)">',
              r'tw-sound-flag-open-link" data-id="(\d+)" style=',),
             webpage, 'current live ID', default=None)
+        if not current_live:
+            # fetch unfiltered /show to find running livestreams; we can't get ID of the password-protected livestream above
+            webpage = self._download_webpage(
+                f'https://twitcasting.tv/{uploader_id}/show/', uploader_id,
+                note='Downloading live history')
+            is_live = self._search_regex(r'(?s)(<span\s*class="tw-movie-thumbnail-badge"\s*data-status="live">\s*LIVE)', webpage, 'is live?', default=None)
+            if is_live:
+                # get the first live; running live is always at the first
+                current_live = self._search_regex(
+                    r'(?s)<a\s+class="tw-movie-thumbnail"\s*href="/[^/]+/movie/(?P<video_id>\d+)"\s*>.+?</a>',
+                    webpage, 'current live ID 2', default=None, group='video_id')
         if not current_live:
             raise ExtractorError('The user is not currently live')
         return self.url_result('https://twitcasting.tv/%s/movie/%s' % (uploader_id, current_live))