split export

apps/edr-freight-api/src/modules/bookings/booking-transition.service.ts

@@ -42,6 +42,7 @@ export class BookingTransitionService {
     private readonly bookingsRepository: BookingsRepository,
     private readonly ruleEngineService: RuleEngineService,
     private readonly pricingService: BookingPricingService,
+    @Inject(forwardRef(() => BookingContractService))
     private readonly contractService: BookingContractService,
     private readonly filesService: FilesService,
     private readonly fileUploadSettingsService: FileUploadSettingsService,
@@ -1049,7 +1050,25 @@ export class BookingTransitionService {
       booking.tradeDirection === "EXPORT" &&
       !isRoadService(booking.serviceType);
     if (isExportTrain) {
-      await this.bookingBatchService.pickExportSchedule(scheduledBooking);
+      // With export split ON the booking no longer has to ride ONE train whole:
+      // the largest fitting part is offered and the leftover rebooks on the next
+      // train. So the day is only unbookable when NO export train that day has
+      // any room at all — reject on the day total, not on a single-train fit.
+      // With the flag off this stays the strict whole-booking gate.
+      if (process.env.FREIGHT_EXPORT_SPLIT === "true") {
+        const fitting = await this.bookingBatchService.fittingTrainsForDay(
+          scheduledBooking,
+          eatDay(date),
+          "EXPORT",
+        );
+        if (!fitting.length) {
+          throw new ConflictException(
+            "No export train on this day has space left — pick another shipment day.",
+          );
+        }
+      } else {
+        await this.bookingBatchService.pickExportSchedule(scheduledBooking);
+      }
     }
 
     await this.bookingsRepository.update(bookingId, {