added logging for get yt link

app/tools/yt.py

@@ -4,8 +4,10 @@ import urllib
 from html.parser import HTMLParser
 from urllib.request import Request
 
+from app.commons import log
+
 _YT_PATTERN = re.compile(r"https://www.youtube.com/.+(?:v=)([\w-]{11}).*")
-_YT_LIST_PATTERN = re.compile(r"https://www.youtube.com/.+?(?:list=)([\w-]{34})?.*")
+_YT_LIST_PATTERN = re.compile(r"https://www.youtube.com/.+?(?:list=)([\w-]{23,})?.*")
 _YT_VIDEO_PATTERN = re.compile(r"https://r\d+---sn-[\w]{10}-[\w]{3,5}.googlevideo.com/videoplayback?.*")
 _HEADERS = {"User-Agent": "Mozilla/5.0"}
 
@@ -46,7 +48,12 @@ class YouTube:
                 s_map = {k: v for k, sep, v in (str(d).partition("=") for d in stream_map.split("&"))}
                 url, title = s_map.get("url", None), out.get("title", None)
                 return urllib.request.unquote(url) if url else "", title.replace("+", " ") if title else ""
-            return "", ""
+
+            rsn = out.get("reason", None)
+            rsn = rsn.replace("+", " ") if rsn else ""
+            log("{}: Getting link to video with id {} filed! Cause: {}".format(__class__.__name__, video_id, rsn))
+
+            return "", rsn
 
 
 class PlayListParser(HTMLParser):
@@ -75,7 +82,7 @@ class PlayListParser(HTMLParser):
             self._is_header = False
 
     def error(self, message):
-        pass
+        log("{} Parsing error: {}".format(__class__.__name__, message))
 
     @property
     def header(self):