Fix customer_truck_containers status

apps/edr-freight-api/src/migrations/2050000000000-AddCustomerTruckContainerLoadedAt.ts

@@ -0,0 +1,35 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+/**
+ * Adds customer_truck_containers.loaded_at so an assignment (customer planning
+ * which containers ride which truck) is distinct from the container actually
+ * being loaded. Stage LOADED now requires loaded_at; customer assignment alone
+ * keeps the container at its prior stage (RECEIVED/GRN) with its planned truck
+ * shown. Backfills containers on already-departed trucks (they left loaded).
+ */
+export class AddCustomerTruckContainerLoadedAt2050000000000
+  implements MigrationInterface
+{
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.customer_truck_containers
+        ADD COLUMN IF NOT EXISTS loaded_at TIMESTAMPTZ;
+    `);
+
+    await queryRunner.query(`
+      UPDATE freight.customer_truck_containers ctc
+      SET loaded_at = a.departed_at
+      FROM freight.customer_truck_assignments a
+      WHERE a.id = ctc.assignment_id
+        AND a.departed_at IS NOT NULL
+        AND ctc.deleted_at IS NULL
+        AND ctc.loaded_at IS NULL;
+    `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.customer_truck_containers DROP COLUMN IF EXISTS loaded_at;
+    `);
+  }
+}