const { Pool } = require('pg');
require('dotenv').config();

const pool = new Pool({
  host: process.env.DB_HOST,
  port: process.env.DB_PORT || 5432,
  database: process.env.DB_NAME || 'postgres',
  user: process.env.DB_USER,
  password: process.env.DB_PASS,
  ssl: process.env.DB_SSLMODE === 'require' ? { rejectUnauthorized: false } : false,
  max: 10,
  idleTimeoutMillis: 30000,
});

pool.on('error', (err) => {
  console.error('DB pool error:', err.message);
});

async function checkConnection() {
  const { rows } = await pool.query('SELECT 1 AS ok');
  return rows[0].ok === 1;
}

module.exports = { pool, checkConnection };