import mysql from 'mysql2/promise';
import dotenv from 'dotenv';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

// Load .env from backend directory
dotenv.config({ path: join(__dirname, '..', '.env') });

const pool = mysql.createPool({
  host: process.env.DB_HOST || 'localhost',
  user: process.env.DB_USER || 'root',
  password: process.env.DB_PASSWORD || 'admin123',
  database: process.env.DB_NAME || 'work_allocation',
  port: process.env.DB_PORT || 3306,
  waitForConnections: true,
  connectionLimit: 10,
  queueLimit: 0
});

// Test connection
pool.getConnection()
  .then(connection => {
    console.log('✅ Database connected successfully');
    connection.release();
  })
  .catch(err => {
    console.error('❌ Database connection failed:', err.message);
  });

export default pool;