<?php
// AFG CARS - Database Configuration & Path Auto-Detection
define('DB_HOST', 'localhost');
define('DB_NAME', 'afg_cars');
define('DB_USER', 'root');
define('DB_PASS', '');

// Auto-detect the application root path for portable links (XAMPP friendly)
$script_name = str_replace('\\', '/', $_SERVER['SCRIPT_NAME']);
$dir_name = str_replace('\\', '/', dirname(__DIR__));
$doc_root = str_replace('\\', '/', $_SERVER['DOCUMENT_ROOT']);

// Calculate the base path relative to document root
$app_path = str_replace($doc_root, '', $dir_name);
// Ensure leading and trailing slashes
$app_path = '/' . trim($app_path, '/') . '/';
if ($app_path === '//') $app_path = '/';

define('APP_URL', $app_path);

function db() {
    static $pdo;
    if (!$pdo) {
        try {
            // Connect to MySQL server first
            $pdo = new PDO('mysql:host='.DB_HOST.';charset=utf8mb4', DB_USER, DB_PASS, [
                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
                PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
            ]);
            
            // Ensure Database exists
            $pdo->exec("CREATE DATABASE IF NOT EXISTS " . DB_NAME);
            $pdo->exec("USE " . DB_NAME);
            
            // Automatic Table Creation: Check if 'users' table exists
            $tableCheck = $pdo->query("SHOW TABLES LIKE 'users'");
            if (!$tableCheck->fetch()) {
                $sql_file = __DIR__ . '/database.sql';
                if (file_exists($sql_file)) {
                    $sql = file_get_contents($sql_file);
                    $pdo->exec($sql);
                }
            }
        } catch (PDOException $e) {
            die("Database Connection Error: " . $e->getMessage());
        }
    }
    return $pdo;
}