const { Pool } = require("pg");

class PoolClass {
	_pool = null;

	connect(option) {
		this._pool = new Pool(option);
		return this._pool.query("SELECT 1+1 ;");
	}

	query(sql, values) {
		return this._pool.query(sql, values);
	}

	close() {
		return this._pool.end();
	}
}

module.exports = new PoolClass();