ensure play queue track state is updated on favorite/unfavorite and scrobbles

sharedutil/sharedutil.go

@@ -0,0 +1,19 @@
+package sharedutil
+
+import "github.com/dweymouth/go-subsonic/subsonic"
+
+func FindTrackByID(id string, tracks []*subsonic.Child) *subsonic.Child {
+	for _, tr := range tracks {
+		if id == tr.ID {
+			return tr
+		}
+	}
+	return nil
+}
+
+func TrackIDOrEmptyStr(track *subsonic.Child) string {
+	if track == nil {
+		return ""
+	}
+	return track.ID
+}