export flow and fix intercity issue

apps/edr-freight-web/backoffice/src/services/api.ts

@@ -1,4 +1,4 @@
-import type { PaginatedResponse } from "@edr/types";
+import type { Freight, PaginatedResponse } from "@edr/types";
 
 import { QUERY_KEYS } from "@/constants/QUERY_KEYS";
 import type { FleetResourceSlug } from "@/pages/fleet/config/resources";
@@ -438,6 +438,31 @@ export const api = {
       ],
     ),
 
+    exportTrains: endpoint<
+      {
+        bookingId: string;
+        date: string;
+        cargo?: {
+          containerSizes?: string[];
+          cargoTypeCode?: string;
+          wagons?: number;
+        };
+      },
+      Freight.ExportTrainOption[]
+    >(
+      "train-scheduling",
+      "export-trains",
+      ({ bookingId, date, cargo }) =>
+        trainSchedulingService.getExportTrains(bookingId, date, cargo),
+      ({ bookingId, date, cargo }) => [
+        ...QUERY_KEYS.TRAIN_SCHEDULING.ROOT,
+        "export-trains",
+        bookingId,
+        date,
+        JSON.stringify(cargo ?? {}),
+      ],
+    ),
+
     trainTrack: endpoint<{ id: string }, TrainTrackResponse>(
       "train-scheduling",
       "track",

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

@@ -189,6 +189,29 @@ export const trainSchedulingService = {
 
   // Cargo-aware day pool (matching wagons + open train capacity). `containers`
   // is serialized as a JSON string param (the server parses it).
+  // Export train picker for a booking's shipment day; cargo params cover bare
+  // instances whose cargo only exists on the form so far.
+  getExportTrains: async (
+    bookingId: string,
+    date: string,
+    cargo?: { containerSizes?: string[]; cargoTypeCode?: string; wagons?: number },
+  ): Promise<Freight.ExportTrainOption[]> => {
+    const response = await client.get<Freight.ExportTrainOption[]>(
+      `/bookings/${bookingId}/export-trains`,
+      {
+        params: {
+          date,
+          ...(cargo?.containerSizes?.length
+            ? { containerSizes: cargo.containerSizes.join(",") }
+            : {}),
+          ...(cargo?.cargoTypeCode ? { cargoTypeCode: cargo.cargoTypeCode } : {}),
+          ...(cargo?.wagons ? { wagons: cargo.wagons } : {}),
+        },
+      },
+    );
+    return unwrap(response.data);
+  },
+
   getAvailableDaysForCargo: async (
     query: Freight.AvailableDaysForCargoQuery,
   ): Promise<string[]> => {