scene: stagedirection: switch to a generic playlist name based interface to mixxx, instead of PWM episode numbers

src/prediction.rs

@@ -16,7 +16,7 @@ const SYSTEM_PROMPT: &str = include_str!("system-prompt.txt");
 #[derive(Debug, Clone)]
 pub enum PredictionAction {
     ConversationAppend(ConversationEntry),
-    SetEpisodeNumber(u32),
+    SetPlaylist(String),
     GeneratePredictions,
     SetNarrative(String),
     SetShowEndTime(DateTime<Utc>)
@@ -417,19 +417,13 @@ pub async fn start_prediction(saved_session: SaveData, mut messages: tokio::sync
 
                         do_regen
                     },
-                    PredictionAction::SetEpisodeNumber(num) => {
-                        session.direction.episode_number = num;
-                        match MixxxDB::load(num) {
+                    PredictionAction::SetPlaylist(playlist_name) => {
+                        match MixxxDB::load(&playlist_name) {
                             Err(err) => log::info!("Failed to load mixxx playlist: {:?}.", err),
                             Ok(playlist) => {
-                                for track in &playlist {
-                                    if let Some(merge_target) = session.scenery.artifacts.iter_mut().find(|a| { *a == track }) {
-                                        merge_target.merge(track.clone());
-                                    } else {
-                                        session.scenery.artifacts.push(track.clone());
-                                    }
-                                }
+                                session.scenery.artifacts.merge(playlist.clone());
                                 session.scenery.current_playlist = playlist;
+                                session.direction.playlist = playlist_name;
                                 log::info!("Mixxx playlist reloaded.");
                             }
                         }