<?php
// Default XAMPP/local settings
define('DB_HOST', '127.0.0.1');
define('DB_NAME', 'leveling_system');
define('DB_USER', 'root');
define('DB_PASS', '');
define('DB_CHARSET', 'utf8mb4');

// Create the database if it doesn't exist
try {
    $pdo_init = new PDO("mysql:host=" . DB_HOST, DB_USER, DB_PASS);
    $pdo_init->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $pdo_init->exec("CREATE DATABASE IF NOT EXISTS `" . DB_NAME . "`");
    $pdo_init = null;
} catch(PDOException $e) {
    // Don't die, the main connection will handle it
}

function db(): PDO {
    static $pdo;
    if ($pdo) {
        return $pdo;
    }

    $dsn = "mysql:host=" . DB_HOST . ";dbname=" . DB_NAME . ";charset=" . DB_CHARSET;
    $options = [
        PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
        PDO::ATTR_EMULATE_PREPARES   => false,
    ];
    try {
        $pdo = new PDO($dsn, DB_USER, DB_PASS, $options);
        return $pdo;
    } catch (PDOException $e) {
        // In a real app, you'd log this error.
        // For this setup, we'll just show a generic error.
        die('Database connection failed. Please check config and ensure MySQL is running.');
    }
}
?>