refactor: Move configuration from env vars to settings.py

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>

main.py

@@ -63,28 +63,28 @@ def delete_playlist_file(playlist_dir, playlist_name):
 
 def main():
     """Get playlists from a Navidrome server using the Subsonic API."""
-    mopidy_playlist_dir = os.environ.get('MOPIDY_PLAYLIST_DIR')
+    mopidy_playlist_dir = settings.MOPIDY_PLAYLIST_DIR
     if not mopidy_playlist_dir:
-        logging.error("MOPIDY_PLAYLIST_DIR environment variable must be set.")
+        logging.error("MOPIDY_PLAYLIST_DIR must be set in settings.py.")
         return
     if not os.path.isdir(mopidy_playlist_dir):
         logging.error(f"Mopidy playlist directory not found: {mopidy_playlist_dir}")
         return
 
-    navidrome_url = os.environ.get('NAVIDROME_URL')
-    username = os.environ.get('NAVIDROME_USER')
+    navidrome_url = settings.NAVIDROME_URL
+    username = settings.NAVIDROME_USER
 
     if not all([navidrome_url, username]):
-        logging.error("NAVIDROME_URL and NAVIDROME_USER environment variables must be set.")
+        logging.error("NAVIDROME_URL and NAVIDROME_USER must be set in settings.py.")
         return
 
-    salt = os.environ.get('SUBSONIC_SALT')
-    token = os.environ.get('SUBSONIC_TOKEN')
+    salt = settings.SUBSONIC_SALT
+    token = settings.SUBSONIC_TOKEN
 
     if not all([salt, token]):
-        password = os.environ.get('NAVIDROME_PASSWORD')
+        password = settings.NAVIDROME_PASSWORD
         if not password:
-            logging.error("Either (SUBSONIC_SALT and SUBSONIC_TOKEN) or NAVIDROME_PASSWORD must be set.")
+            logging.error("Either (SUBSONIC_SALT and SUBSONIC_TOKEN) or NAVIDROME_PASSWORD must be set in settings.py.")
             return
 
         # Subsonic API requires a salt and a token (md5(password + salt))

settings.py

@@ -0,0 +1,6 @@
+MOPIDY_PLAYLIST_DIR = ""
+NAVIDROME_URL = ""
+NAVIDROME_USER = ""
+NAVIDROME_PASSWORD = ""
+SUBSONIC_SALT = ""
+SUBSONIC_TOKEN = ""