feat: add refresh playlist functionality

app/routes/jellyfin_routes.py

@@ -170,6 +170,37 @@ def delete_playlist(playlist_id):
     except Exception as e:
         flash(f'Failed to remove item: {str(e)}')
     
+@app.route('/refresh_playlist/<playlist_id>', methods=['GET'])
+@functions.jellyfin_admin_required
+def refresh_playlist(playlist_id):
+    # get the playlist from the database using the playlist_id
+    playlist = Playlist.query.filter_by(jellyfin_id=playlist_id).first()
+    # if the playlist has a jellyfin_id, then fetch the playlist from Jellyfin
+    if playlist.jellyfin_id:
+        try:
+            app.logger.debug(f"removing all tracks from playlist {playlist.jellyfin_id}")
+            jellyfin_playlist = jellyfin.get_music_playlist(session_token=functions._get_api_token(), playlist_id=playlist.jellyfin_id)  
+            jellyfin.remove_songs_from_playlist(session_token=functions._get_token_from_sessioncookie(), playlist_id=playlist.jellyfin_id, song_ids=[track for track in jellyfin_playlist['ItemIds']])
+            ordered_tracks = db.session.execute(
+                            db.select(Track, playlist_tracks.c.track_order)
+                            .join(playlist_tracks, playlist_tracks.c.track_id == Track.id)
+                            .where(playlist_tracks.c.playlist_id == playlist.id)
+                            .order_by(playlist_tracks.c.track_order)
+                        ).all()
+
+            tracks = [track.jellyfin_id for track, idx in ordered_tracks if track.jellyfin_id is not None]
+            #jellyfin.remove_songs_from_playlist(session_token=jellyfin_admin_token, playlist_id=playlist.jellyfin_id, song_ids=tracks)
+            jellyfin.add_songs_to_playlist(session_token=functions._get_api_token(), user_id=functions._get_admin_id(), playlist_id=playlist.jellyfin_id, song_ids=tracks)
+            # if the playlist is found, then update the playlist metadata
+            provider_playlist = MusicProviderRegistry.get_provider(playlist.provider_id).get_playlist(playlist.provider_playlist_id)
+            functions.update_playlist_metadata(playlist, provider_playlist)
+            flash('Playlist refreshed')
+            return jsonify({'success': True})
+                
+        except Exception as e:
+            flash(f'Failed to refresh playlist: {str(e)}')
+            return jsonify({'success': False})
+        
 
 @app.route('/wipe_playlist/<playlist_id>', methods=['DELETE'])
 @functions.jellyfin_admin_required

jellyfin/client.py

@@ -118,6 +118,23 @@ class JellyfinClient:
             return {"status": "success", "message": "Playlist updated successfully"}
         else:
             raise Exception(f"Failed to update playlist: {response.content}")
+        
+    def get_music_playlist(self, session_token : str, playlist_id: str):
+        """
+        Get a music playlist by its ID.
+        :param playlist_id: The ID of the playlist to fetch.
+        :return: The playlist object
+        """
+        url = f'{self.base_url}/Playlists/{playlist_id}'
+        self.logger.debug(f"Url={url}")
+
+        response = requests.get(url, headers=self._get_headers(session_token=session_token), timeout = self.timeout)
+        self.logger.debug(f"Response = {response.status_code}")
+
+        if response.status_code == 200:
+            return response.json()
+        else:
+            raise Exception(f"Failed to get playlist: {response.content}")
 
     def get_playlist_metadata(self, session_token: str, user_id: str,playlist_id: str) -> PlaylistMetadata:
         url = f'{self.base_url}/Items/{playlist_id}'

templates/partials/_playlist_info.html

@@ -9,6 +9,29 @@
         <p>{{ item.track_count }} songs, {{ total_duration }}</p>
         <p>Last Updated: {{ item.last_updated}} | Last Change: {{ item.last_changed}}</p>
         {% include 'partials/_add_remove_button.html' %}
+        {% if session['is_admin'] and item.jellyfin_id %}
+        <p>
+            <button id="refresh-playlist-btn" class="btn btn-primary mt-2">Refresh Playlist in Jellyfin</button>
+            <script>
+            document.getElementById('refresh-playlist-btn').addEventListener('click', function() {
+              fetch(`/refresh_playlist/{{item.jellyfin_id}}`)
+              .then(response => response.json())
+              .then(data => {
+                if (data.success) {
+                alert('Playlist refreshed successfully');
+                } else {
+                alert('Failed to refresh playlist');
+                }
+              })
+              .catch(error => {
+                console.error('Error:', error);
+                alert('An error occurred while refreshing the playlist');
+              });
+            });
+            </script>
+        </p>
+        {% endif %}
       </div>
+
     </div>
   </div>