add lashing surcharge for cargo types with hasLashing flag

add lashing surcharge for cargo types with hasLashing flag

apps/edr-freight-api/src/modules/train-scheduling/batch-window.util.spec.ts

@@ -6,6 +6,8 @@ import {
   listConfigBookingWindows,
   groupBookingsIntoBoardWindows,
   computeImportWindowTimes,
+  computeExportWindowTimes,
+  bookingCloseCutoff,
   type BoardWindowConfig,
 } from './batch-window.util';
 
@@ -360,3 +362,101 @@ describe('computeImportWindowTimes — immediate open inside the window day', ()
     expect(t.windowOpensAt.getTime()).toBe(now.getTime());
   });
 });
+
+// Booking-close offset: a configured offset pulls the window close earlier than
+// departure by that many minutes, separately for import and export.
+describe('bookingCloseCutoff — departure − offset', () => {
+  const departure = new Date('2026-07-10T13:00:00.000Z'); // 16:00 EAT Jul 10
+
+  it('returns departure unchanged when no offset is set', () => {
+    expect(bookingCloseCutoff(departure, 'IMPORT', {}).toISOString()).toBe(
+      departure.toISOString(),
+    );
+    expect(
+      bookingCloseCutoff(departure, 'EXPORT', {
+        importCloseOffsetMinutes: 180,
+      }).toISOString(),
+    ).toBe(departure.toISOString());
+  });
+
+  it('a non-positive offset is treated as no offset', () => {
+    expect(
+      bookingCloseCutoff(departure, 'IMPORT', {
+        importCloseOffsetMinutes: 0,
+      }).toISOString(),
+    ).toBe(departure.toISOString());
+    expect(
+      bookingCloseCutoff(departure, 'IMPORT', {
+        importCloseOffsetMinutes: -5,
+      }).toISOString(),
+    ).toBe(departure.toISOString());
+  });
+
+  it('import 3-hour offset: 16:00 EAT departure → cutoff 13:00 EAT (14:00 → 3h before)', () => {
+    // Departure 16:00 EAT (13:00 UTC), 3h offset → 13:00 EAT = 10:00 UTC.
+    const cutoff = bookingCloseCutoff(departure, 'IMPORT', {
+      importCloseOffsetMinutes: 180,
+    });
+    expect(cutoff.toISOString()).toBe('2026-07-10T10:00:00.000Z');
+  });
+
+  it('export 1-day offset: Jul-10 16:00 EAT departure → cutoff Jul-9 16:00 EAT', () => {
+    const cutoff = bookingCloseCutoff(departure, 'EXPORT', {
+      exportCloseOffsetMinutes: 1440,
+    });
+    // Jul 9 16:00 EAT = Jul 9 13:00 UTC.
+    expect(cutoff.toISOString()).toBe('2026-07-09T13:00:00.000Z');
+  });
+
+  it('import and export offsets are independent', () => {
+    const cfg = {
+      importCloseOffsetMinutes: 180,
+      exportCloseOffsetMinutes: 1440,
+    };
+    expect(bookingCloseCutoff(departure, 'IMPORT', cfg).toISOString()).toBe(
+      '2026-07-10T10:00:00.000Z',
+    );
+    expect(bookingCloseCutoff(departure, 'EXPORT', cfg).toISOString()).toBe(
+      '2026-07-09T13:00:00.000Z',
+    );
+    // DOMESTIC uses the import offset.
+    expect(bookingCloseCutoff(departure, 'DOMESTIC', cfg).toISOString()).toBe(
+      '2026-07-10T10:00:00.000Z',
+    );
+  });
+});
+
+describe('window-time computation honours the close offset', () => {
+  it('export closes at departure − offset, not departure', () => {
+    // Departs Jul 10 16:00 EAT (13:00 UTC), lead 24h, 24-hour desk, 1-day offset.
+    const departure = new Date('2026-07-10T13:00:00.000Z');
+    const { windowClosesAt } = computeExportWindowTimes(departure, {
+      exportBookingLeadHours: 48,
+      windowOpenHour: 8,
+      windowCloseHour: 8, // 24-hour desk
+      exportCloseOffsetMinutes: 1440,
+    });
+    // Jul 9 16:00 EAT = Jul 9 13:00 UTC.
+    expect(windowClosesAt.toISOString()).toBe('2026-07-09T13:00:00.000Z');
+  });
+
+  it('import close is capped at the cutoff (departure − offset)', () => {
+    // Round-the-clock desk, opens 05 Jul 12:00 EAT, 24h duration would run to
+    // 06 Jul 12:00; departure 06 Jul 08:00 EAT (05:00 UTC) with a 2-hour offset →
+    // cutoff 06 Jul 06:00 EAT = 03:00 UTC.
+    const departure = new Date('2026-07-06T05:00:00.000Z');
+    const now = new Date('2026-07-05T09:00:00.000Z');
+    const { windowClosesAt } = computeImportWindowTimes(
+      departure,
+      {
+        importWindowLeadDays: 3,
+        windowOpenHour: 8,
+        windowCloseHour: 8, // 24-hour desk (no office-hour cap)
+        windowDurationHours: 24,
+        importCloseOffsetMinutes: 120,
+      },
+      now,
+    );
+    expect(windowClosesAt.toISOString()).toBe('2026-07-06T03:00:00.000Z');
+  });
+});