From 9471aad4baa503c0dfd4f40d9ef7d7bc9f7ceeca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Ml=C3=A1dek?= <tmladek@protonmail.ch>
Date: Fri, 3 May 2019 11:45:46 +0200
Subject: [PATCH] don't try to tag unnecessarily

---
 delojza.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/delojza.py b/delojza.py
index 1789482..1be6575 100755
--- a/delojza.py
+++ b/delojza.py
@@ -208,7 +208,13 @@ class DelojzaBot:
             filenames.append(final_filename)
 
             if audio and is_mp3:
-                self.tag_file(final_filename, message)
+                try:
+                    id3 = mutagen.id3.ID3(final_filename)
+                    untagged = 'TIT2' not in id3
+                except mutagen.id3.ID3NoHeaderError:
+                    untagged = True
+                if untagged:
+                    self.tag_file(final_filename, message)
 
         return filenames