const mysql = require('mysql2/promise');

const pool = mysql.createPool({
  host: process.env.MYSQL_HOST || 'localhost',
  port: parseInt(process.env.MYSQL_PORT) || 3306,
  user: process.env.MYSQL_USER || 'root',
  password: process.env.MYSQL_PASSWORD || '',
  database: process.env.MYSQL_DATABASE || 'display_wall',
  waitForConnections: true,
  connectionLimit: 10,
  queueLimit: 0
});

module.exports = pool;