import { MigrationInterface, QueryRunner } from 'typeorm';

export class PhaseD21SingleActPerVisit1787072400000 implements MigrationInterface {
  name = 'PhaseD21SingleActPerVisit1787072400000';

  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`
      DO $$
      BEGIN
        IF EXISTS (
          SELECT visit_id
          FROM inspection_acts
          GROUP BY visit_id
          HAVING COUNT(*) > 1
        ) THEN
          RAISE EXCEPTION
            'D2.1 no puede aplicar un acta por visita: existen visitas con actas duplicadas';
        END IF;
      END
      $$
    `);
    await queryRunner.query(`
      ALTER TABLE inspection_acts
      ADD CONSTRAINT uq_inspection_acts_visit UNIQUE (visit_id)
    `);
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`
      ALTER TABLE inspection_acts
      DROP CONSTRAINT uq_inspection_acts_visit
    `);
  }
}