generation-aware playback statuses

internal/playback/sync_worker.go

@@ -59,7 +59,8 @@ func NewSyncWorker(
 	}, nil
 }
 
-func (w *SyncWorker) emit(status Status) {
+func (w *SyncWorker) emit(ctx context.Context, status Status) {
+	status.Generation = generationFromContext(ctx)
 	if w.observer != nil {
 		w.observer(status)
 	}
@@ -90,7 +91,7 @@ func (w *SyncWorker) Run(
 		if attemptNumber > 1 {
 			state = StateReconnecting
 		}
-		w.emit(Status{
+		w.emit(ctx, Status{
 			Unit:    UnitSync,
 			State:   state,
 			Attempt: attemptNumber,
@@ -99,7 +100,7 @@ func (w *SyncWorker) Run(
 		attemptAudioSink := &stabilityAudioSink{
 			sink: w.audioSink,
 			onStable: func() {
-				w.emit(Status{
+				w.emit(ctx, Status{
 					Unit:    UnitSync,
 					State:   StatePlaying,
 					Attempt: attemptNumber,
@@ -133,7 +134,7 @@ func (w *SyncWorker) Run(
 		if !event.WillRetry {
 			return
 		}
-		w.emit(Status{
+		w.emit(ctx, Status{
 			Unit:           UnitSync,
 			State:          StateReconnecting,
 			Attempt:        attemptNumber + 1,
@@ -151,18 +152,18 @@ func (w *SyncWorker) Run(
 		observeRetry,
 	)
 	if ctx.Err() != nil {
-		w.emit(Status{
+		w.emit(ctx, Status{
 			Unit:  UnitSync,
 			State: StateStopping,
 		})
-		w.emit(Status{
+		w.emit(ctx, Status{
 			Unit:  UnitSync,
 			State: StateIdle,
 		})
 		return ctx.Err()
 	}
 	if err != nil {
-		w.emit(Status{
+		w.emit(ctx, Status{
 			Unit:           UnitSync,
 			State:          StateFailed,
 			Attempt:        attemptNumber,
@@ -171,7 +172,7 @@ func (w *SyncWorker) Run(
 		})
 		return err
 	}
-	w.emit(Status{
+	w.emit(ctx, Status{
 		Unit:  UnitSync,
 		State: StateIdle,
 	})