audio extraction capabilities

robot.py

@@ -46,13 +46,19 @@ def ytdl_has(url):
     return False
 
 
-def download_ydl(urls, subdir, date):
+def download_ydl(urls, subdir, date, extract=False):
     ydl_opts = {
         'noplaylist': True,
         'restrictfilenames': True,
         'download_archive': DIR + '/downloaded.lst',
         'outtmpl': f'{TMP_DIR}/' + datestr(date) + '__%(title)s__%(id)s.%(ext)s'
     }
+    if extract:
+        ydl_opts['format'] = 'bestaudio'
+        ydl_opts['postprocessors'] = [{
+            'key': 'FFmpegExtractAudio',
+            'preferredcodec': 'wav'
+        }]
     with youtube_dl.YoutubeDL(ydl_opts) as ydl:
         ydl.download(urls)
         out_dir = f'{OUT_DIR}/{subdir}/'
@@ -98,10 +104,17 @@ def handle_url(bot, update):
         try:
             logger.info("Downloading %s" % ytdl_urls)
             hashtag = get_first_hashtag(update.message)
+
+            reply = 'Downloading'
             if hashtag:
                 mkdir_p(f'{OUT_DIR}/{hashtag}')
-            update.message.reply_text('Downloading%s...' % f' to "{hashtag}"' if hashtag else '')
-            download_ydl(ytdl_urls, hashtag or '.', update.message.date)
+                reply += f' to "{hashtag}"'
+            reply += '...'
+
+            if hashtag == 'AUDIO':
+                reply += ' (And also guessing you want to extract the audio)'
+            update.message.reply_text(reply)
+            download_ydl(ytdl_urls, hashtag or '.', update.message.date, extract=hashtag == 'AUDIO')
         except:
             type, value, _ = sys.exc_info()
             update.message.reply_text("Something is FUCKED: %s, %s" % (type, value))