schedule logic

apps/edr-freight-api/src/modules/train-scheduling/wagon-readiness.util.ts

@@ -16,3 +16,16 @@ export function wagonReadinessMatchesSchedule(
   if (!required) return true;
   return wagonReadiness === required;
 }
+
+/**
+ * Toggle a readiness value (IMPORT_READY ↔ EXPORT_READY). Used when a train
+ * reaches its destination: the asset has repositioned, so it is now ready for
+ * the opposite direction. Direction-agnostic so it handles round trips.
+ */
+export function flipReadiness(
+  readiness: WagonReadiness | string,
+): WagonReadiness {
+  return readiness === WagonReadiness.ImportReady
+    ? WagonReadiness.ExportReady
+    : WagonReadiness.ImportReady;
+}