Add contract booking windows feature

apps/edr-freight-web/backoffice/src/services/trainScheduling.service.ts

@@ -6,6 +6,7 @@ import type {
   BatchBoardSchedule,
   BatchBoardScheduleDetail,
   BookableSchedule,
+  BookingWindow,
   AssignBookingsPayload,
   CompositionRemovalEntry,
   UnassignedBookingsResponse,
@@ -106,6 +107,19 @@ export const trainSchedulingService = {
     return unwrap(response.data);
   },
 
+  /**
+   * Booking windows for every route/schedule of a contract. A window with
+   * `isOpenNow === true` means GL may create a booking right now for that route.
+   */
+  getContractBookingWindows: async (
+    contractId: string,
+  ): Promise<BookingWindow[]> => {
+    const response = await client.get<BookingWindow[]>(
+      URL_CONSTANTS.TRAIN_SCHEDULING.CONTRACT_BOOKING_WINDOWS(contractId),
+    );
+    return unwrap(response.data);
+  },
+
   getBookableSchedules: async (
     originYardId?: string,
     destinationYardId?: string,