edr-platform/apps/edr-freight-api/src/migrations/2850000000000-AddBookingDoubleHandling.ts

import { MigrationInterface, QueryRunner } from 'typeorm';

/**
 * Double handling becomes an explicit per-booking decision instead of an
 * implicit "every import" charge. Warehouse staff record Yes/No after
 * unloading (whether the goods actually had to be re-handled); the
 * DOUBLE_HANDLING_FEE rule only bills when the answer is Yes.
 *
 * NULL = not decided yet → no charge, and the UI shows "not set" so the
 * operator is prompted. Existing rows stay NULL deliberately: back-billing a
 * fee nobody confirmed would be wrong.
 */
export class AddBookingDoubleHandling2850000000000 implements MigrationInterface {
  name = 'AddBookingDoubleHandling2850000000000';

  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(
      `ALTER TABLE freight.bookings ADD COLUMN IF NOT EXISTS double_handling boolean;`,
    );
    await queryRunner.query(
      `ALTER TABLE freight.bookings ADD COLUMN IF NOT EXISTS double_handling_set_at timestamptz;`,
    );
    await queryRunner.query(
      `ALTER TABLE freight.bookings ADD COLUMN IF NOT EXISTS double_handling_set_by varchar(160);`,
    );
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(
      `ALTER TABLE freight.bookings DROP COLUMN IF EXISTS double_handling_set_by;`,
    );
    await queryRunner.query(
      `ALTER TABLE freight.bookings DROP COLUMN IF EXISTS double_handling_set_at;`,
    );
    await queryRunner.query(
      `ALTER TABLE freight.bookings DROP COLUMN IF EXISTS double_handling;`,
    );
  }
}