fix

apps/edr-freight-api/src/migrations/1940000000000-AddFirstMileVehicleAssignments.ts

@@ -0,0 +1,42 @@
+import { MigrationInterface, QueryRunner } from "typeorm";
+
+/**
+ * Allow more than one vehicle per first-mile pickup. Junction table joins
+ * first_mile ⇄ vehicles, with each truck's container number + actual distance;
+ * existing single vehicle_id values are backfilled as the first assignment so
+ * nothing is lost. Mirrors the last-mile vehicle-assignment schema.
+ */
+export class AddFirstMileVehicleAssignments1940000000000 implements MigrationInterface {
+  name = "AddFirstMileVehicleAssignments1940000000000";
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS freight.first_mile_vehicle_assignments (
+        id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+        first_mile_id uuid NOT NULL REFERENCES freight.first_mile(id) ON DELETE CASCADE,
+        vehicle_id uuid NOT NULL REFERENCES freight.vehicles(id),
+        container_number varchar,
+        distance_km numeric(10,2),
+        created_at timestamptz NOT NULL DEFAULT now(),
+        updated_at timestamptz NOT NULL DEFAULT now(),
+        deleted_at timestamptz,
+        CONSTRAINT "UQ_FIRST_MILE_VEHICLE" UNIQUE (first_mile_id, vehicle_id)
+      )
+    `);
+    await queryRunner.query(`
+      CREATE INDEX IF NOT EXISTS "IDX_FM_VEHICLE_ASSIGNMENTS_VEHICLE"
+      ON freight.first_mile_vehicle_assignments (vehicle_id)
+    `);
+    // Backfill: existing single-vehicle assignments become the first row
+    await queryRunner.query(`
+      INSERT INTO freight.first_mile_vehicle_assignments (first_mile_id, vehicle_id)
+      SELECT id, vehicle_id FROM freight.first_mile
+      WHERE vehicle_id IS NOT NULL AND deleted_at IS NULL
+      ON CONFLICT (first_mile_id, vehicle_id) DO NOTHING
+    `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`DROP TABLE IF EXISTS freight.first_mile_vehicle_assignments`);
+  }
+}