Remove unused and check subtitle_url.

fetchYoutubeSubtitle.py

@@ -24,12 +24,14 @@ async def fetchSubtitle(url: str, lang: Optional[str] = 'en', vttType="vtt") ->
         if info_dict.get("subtitles"):
             # get first available subtitle
             subtitle_url = getVttUrlFromSubtitles(info_dict.get("subtitles"), lang, vttType)
-            with ydl.urlopen(subtitle_url) as subtitle:
-                return subtitle.read().decode()
+            if subtitle_url:
+                with ydl.urlopen(subtitle_url) as subtitle:
+                    return subtitle.read().decode()
         if info_dict.get("automatic_captions"):
             subtitle_url = getVttUrlFromSubtitles(info_dict.get("automatic_captions"), lang, vttType)
-            with ydl.urlopen(subtitle_url) as subtitle:
-                return subtitle.read().decode()
+            if subtitle_url:
+                with ydl.urlopen(subtitle_url) as subtitle:
+                    return subtitle.read().decode()
     return None
 
 async def fetchSubtitleUrls(url: str) -> json:
@@ -48,31 +50,3 @@ async def fetchSubtitleUrls(url: str) -> json:
             if info_dict.get("automatic_captions"):
                 return info_dict.get("automatic_captions")
     return None
-
-def get_subtitle(url, lang='en'):
-    if lang is None:
-        lang = 'en'
-    # Download subtitles if available
-    ydl_opts = {
-        'writesubtitles': True,
-        'outtmpl': '%(id)s.%(ext)s',
-        'subtitleslangs': [lang],
-        'skip_download': True,
-    }
-    try:
-        with yt_dlp.YoutubeDL(ydl_opts) as ydl:
-            info_dict = ydl.extract_info(url, download=True)
-            video_id = info_dict.get("id", None)
-            if video_id is None:
-                return None
-
-            subtitle_file = f"{video_id}.{lang}.vtt"
-            with open(subtitle_file, 'r') as f:
-                subtitle_content = f.read()
-                subtitle_content = re.sub(r"<[^>]+>", "", subtitle_content)
-                return subtitle_content
-    except error:
-        print(error)
-        return None
-    
-    return None