<?php
// Database configuration for Hostinger shared hosting
define('DB_HOST', 'localhost');
define('DB_NAME', 'u752449863_rrpanel');
define('DB_USER', 'u752449863_rrpaneladmin');
define('DB_PASS', 'S@n@h2016'); // Replace with your actual password

// Site configuration
define('SITE_URL', 'https://relevantreflex.com'); // Replace with your actual domain
define('SITE_NAME', 'Relevant Reflex');
define('FROM_EMAIL', 'registration@relevantreflex.com');
define('FROM_NAME', 'Relevant Reflex Registration');

// Email configuration (you can use Hostinger's SMTP or a service like PHPMailer)
define('SMTP_HOST', 'smtp.hostinger.com');
define('SMTP_PORT', 587);
define('SMTP_USERNAME', 'registration@relevantreflex.com');
define('SMTP_PASSWORD', 'YOUR_EMAIL_PASSWORD'); // Replace with your email password
define('SMTP_ENCRYPTION', 'tls');

// Security settings
define('HASH_ALGO', 'sha256');
define('TOKEN_EXPIRY_HOURS', 24); // Email verification token expiry in hours
define('PASSWORD_RESET_EXPIRY_HOURS', 2); // Password reset token expiry in hours

// Database connection class
class Database {
    private $connection;
    
    public function __construct() {
        try {
            $this->connection = new PDO(
                "mysql:host=" . DB_HOST . ";dbname=" . DB_NAME . ";charset=utf8mb4",
                DB_USER,
                DB_PASS,
                [
                    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
                    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
                    PDO::ATTR_EMULATE_PREPARES => false
                ]
            );
        } catch (PDOException $e) {
            error_log("Database connection failed: " . $e->getMessage());
            die("Connection failed. Please try again later.");
        }
    }
    
    public function getConnection() {
        return $this->connection;
    }
}

// Utility functions
function sanitize($data) {
    return htmlspecialchars(strip_tags(trim($data)), ENT_QUOTES, 'UTF-8');
}

function generateSecureToken($length = 64) {
    return bin2hex(random_bytes($length / 2));
}

function hashPassword($password) {
    return password_hash($password, PASSWORD_DEFAULT);
}

function verifyPassword($password, $hash) {
    return password_verify($password, $hash);
}

function validateEmail($email) {
    return filter_var($email, FILTER_VALIDATE_EMAIL) && 
           preg_match('/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/', $email);
}

function validatePassword($password) {
    // At least 8 characters
    return strlen($password) >= 8;
}

function validateDateOfBirth($dob) {
    $date = DateTime::createFromFormat('Y-m-d', $dob);
    if (!$date) return false;
    
    // Check if user is at least 18 years old
    $today = new DateTime();
    $age = $today->diff($date)->y;
    return $age >= 18;
}

function validatePostcode($postcode) {
    // Indian postal code validation (6 digits)
    return preg_match('/^[0-9]{6}$/', $postcode);
}

// JSON response helper
function jsonResponse($success, $message, $data = null) {
    header('Content-Type: application/json');
    echo json_encode([
        'success' => $success,
        'message' => $message,
        'data' => $data
    ]);
    exit;
}

// Error logging function
function logError($message, $context = []) {
    $logMessage = date('Y-m-d H:i:s') . ' - ' . $message;
    if (!empty($context)) {
        $logMessage .= ' - Context: ' . json_encode($context);
    }
    error_log($logMessage . PHP_EOL, 3, 'errors.log');
}
?>