feat: artist name in clean song title is optional

music_kraken/utils/string_processing.py

@@ -1,4 +1,4 @@
-from typing import Tuple, Union
+from typing import Tuple, Union, Optional
 from pathlib import Path
 import string
 from functools import lru_cache
@@ -53,7 +53,7 @@ def fit_to_file_system(string: Union[str, Path]) -> Union[str, Path]:
         return fit_string(string)
 
 
-def clean_song_title(raw_song_title: str, artist_name: str) -> str:
+def clean_song_title(raw_song_title: str, artist_name: Optional[str] = None) -> str:
     """
     This function cleans common naming "conventions" for non clean song titles, like the title of youtube videos
     
@@ -65,13 +65,16 @@ def clean_song_title(raw_song_title: str, artist_name: str) -> str:
     - `song (prod. some producer)`
     """
     raw_song_title = raw_song_title.strip()
-    artist_name = artist_name.strip()
 
     # Clean official Video appendix
     for dirty_appendix in COMMON_TITLE_APPENDIX_LIST:
         if raw_song_title.lower().endswith(dirty_appendix):
             raw_song_title = raw_song_title[:-len(dirty_appendix)].strip()
 
+    # everything that requires the artist name
+    if artist_name is not None:
+        artist_name = artist_name.strip()
+
         # Remove artist from the start of the title
         if raw_song_title.lower().startswith(artist_name.lower()):
             raw_song_title = raw_song_title[len(artist_name):].strip()