import { MigrationInterface, QueryRunner } from 'typeorm';

export class AddsBaseTriggers1775011588385 implements MigrationInterface {
    public async up(queryRunner: QueryRunner): Promise<void> {
        queryRunner.query(`
CREATE OR REPLACE FUNCTION set_updated_at()
RETURNS TRIGGER AS $$
BEGIN
  NEW.updated_at = now();
  RETURN NEW;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER set_articles_updated_at
BEFORE UPDATE ON articles
FOR EACH ROW
EXECUTE FUNCTION set_updated_at();

CREATE TRIGGER set_users_updated_at
BEFORE UPDATE on users
FOR EACH ROW
EXECUTE FUNCTION set_updated_at();
        --end-sql`);
    }

    public async down(queryRunner: QueryRunner): Promise<void> {
        await queryRunner.query(`--sql
DROP TRIGGER set_articles_updated_at ON articles;
DROP TRIGGER set_users_updated_at ON users;
DROP FUNCTION set_updated_at();
        --end-sql`);
    }
}