const mysql = require('mysql2');

const pool = mysql.createPool({
  host: process.env.DB_HOST || 'localhost',
  user: process.env.DB_USER || 'root',
  password: process.env.DB_PASSWORD !== undefined ? process.env.DB_PASSWORD : 'cytech0001',
  database: process.env.DB_NAME || 'user',
  charset: 'utf8mb4',
  waitForConnections: true,
  connectionLimit: 10,
  queueLimit: 0,
  enableKeepAlive: true,
  keepAliveInitialDelay: 10000
});

pool.getConnection((err, conn) => {
  if (err) {
    console.error('❌ Erreur de connexion à MySQL :', err);
  } else {
    console.log('✅ Connecté à la base de données MySQL (pool)');
    conn.release();
  }
});

module.exports = pool;