edr-platform/apps/edr-freight-api/src/migrations/3700000000000-HandlingStandards.ts

import { MigrationInterface, QueryRunner } from "typeorm";

/**
 * Standard loading-and-unloading time, so the handling figure can be reported
 * the way the OCC scorecard reports it — hours against a target, with a rate.
 *
 * Nullable with NO default, unlike every other column in this table. The
 * reporting spec publishes standards for a station stay (10h / 13h) and for a
 * turn-around cycle (65 / 88 / 96) but none for handling, so there is no
 * honest figure to seed. Until a planner enters one in Operating standards the
 * rate reads empty rather than judging trains against an invented number.
 */
export class HandlingStandards3700000000000 implements MigrationInterface {
  name = "HandlingStandards3700000000000";

  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`
      ALTER TABLE freight.operations_standards
        ADD COLUMN IF NOT EXISTS handling_standard_hours_container numeric(6,2),
        ADD COLUMN IF NOT EXISTS handling_standard_hours_bulk numeric(6,2);
    `);
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`
      ALTER TABLE freight.operations_standards
        DROP COLUMN IF EXISTS handling_standard_hours_container,
        DROP COLUMN IF EXISTS handling_standard_hours_bulk;
    `);
  }
}