feat: add --force-sync command-line argument for one-time playlist sync

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

main.py

@@ -4,6 +4,7 @@ logging.basicConfig(
         format='[%(asctime)s] %(levelname)s %(module)s/%(funcName)s - %(message)s',
         level=logging.DEBUG if DEBUG else logging.INFO)
 
+import argparse
 import hashlib
 import random
 import string
@@ -63,6 +64,9 @@ def delete_playlist_file(playlist_dir, playlist_name):
 
 def main():
     """Get playlists from a Navidrome server using the Subsonic API."""
+    parser = argparse.ArgumentParser(description="Sync Navidrome playlists to Mopidy.")
+    parser.add_argument('--force-sync', action='store_true', help='Perform a one-time sync of all playlists and exit.')
+    args = parser.parse_args()
     mopidy_playlist_dir = settings.MOPIDY_PLAYLIST_DIR
     if not mopidy_playlist_dir:
         logging.error("MOPIDY_PLAYLIST_DIR must be set in settings.py.")
@@ -100,6 +104,42 @@ def main():
         'f': 'json'
     }
 
+    if args.force_sync:
+        logging.info("Starting one-time force sync of all playlists...")
+        api_url = f"{navidrome_url.rstrip('/')}/rest/getPlaylists.view"
+        try:
+            response = requests.get(api_url, params=params)
+            response.raise_for_status()
+        except requests.exceptions.RequestException as e:
+            logging.error(f"Error connecting to Navidrome: {e}")
+            return
+
+        data = response.json()
+        subsonic_response = data.get('subsonic-response')
+        if not subsonic_response or subsonic_response.get('status') == 'failed':
+            error = subsonic_response.get('error', {}) if subsonic_response else {}
+            logging.error(f"API Error during sync: {error.get('message')} (code: {error.get('code')})")
+            return
+        
+        playlists = subsonic_response.get('playlists', {}).get('playlist', [])
+        if not playlists:
+            logging.info("No playlists found to sync.")
+            return
+
+        logging.info(f"Found {len(playlists)} playlists to sync.")
+        for playlist in playlists:
+            playlist_id = playlist.get('id')
+            playlist_name = playlist.get('name')
+            logging.info(f"Syncing playlist: '{playlist_name}' ({playlist_id})")
+            raw_output = run_pls_command(playlist_id)
+            if raw_output:
+                transformed_output = transform_m3u_to_m3u8(raw_output)
+                if transformed_output:
+                    save_playlist_file(mopidy_playlist_dir, playlist_name, transformed_output)
+        
+        logging.info("Force sync complete.")
+        return
+
     known_playlists = {}
 
     while True: