Export Load on train

apps/edr-freight-api/src/modules/warehouses/warehouse-fee.service.ts

@@ -387,7 +387,9 @@ export class WarehouseFeeService {
     // PER_TON (tonnes) and PER_ITEM (piece count) both read the cargo total,
     // which is stored in the cargo's own unit of measure.
     const cargoQuantity = Math.max(0, Number(item.cargoQuantity) || 0);
-    const quantity = basis === 'PER_CONTAINER' ? containerCount : cargoQuantity;
+    // Double handling applies to IMPORT only — no charge for export/domestic.
+    const isImport = (item.tradeDirection ?? '').toUpperCase() === 'IMPORT';
+    const quantity = !isImport ? 0 : basis === 'PER_CONTAINER' ? containerCount : cargoQuantity;
     const sourceAmount = Math.round(rate * quantity * 100) / 100;
     const amount = ruleCurrency ? await this.convertAmount(sourceAmount, ruleCurrency, targetCurrency) : 0;
     const convertedRate = ruleCurrency ? await this.convertAmount(rate, ruleCurrency, targetCurrency) : 0;
@@ -455,6 +457,32 @@ export class WarehouseFeeService {
     );
     if (!leg) throw new NotFoundException(`Last-mile record ${lastMileId} not found`);
 
+    // Truck detention applies to IMPORT only — no charge for export/domestic.
+    if ((leg.tradeDirection ?? '').toUpperCase() !== 'IMPORT') {
+      const cur = this.normalizeCurrency(billingCurrency);
+      return {
+        ruleType: 'TRUCK_DETENTION_FEE',
+        basis: null,
+        ruleId: null,
+        ruleName: null,
+        freeDays: 0,
+        ratePerDay: 0,
+        currency: cur,
+        ruleCurrency: null,
+        billingCurrency: cur,
+        startDate: leg.arrivedAt ? new Date(leg.arrivedAt).toISOString() : null,
+        endDate: (leg.deliveredAt ? new Date(leg.deliveredAt) : new Date()).toISOString(),
+        endIsOpen: !leg.deliveredAt,
+        elapsedDays: 0,
+        chargeableDays: 0,
+        containerCount: 0,
+        billableUnits: 0,
+        amount: 0,
+        tiers: [],
+        groups: [],
+      };
+    }
+
     // Group the leg's vehicles by type so each truck type is billed by its own
     // matching rule (rates differ by truck type). Falls back to one untyped group.
     const groupRows: Array<{ vehicleType: string | null; truckCount: number | string }> =