<?php


define('SMTP_FROM_EMAIL', 'kontakt@hexahost.de');  
define('SMTP_TO_EMAIL', 'info@hexahost.de');       


define('ENABLE_CSRF_PROTECTION', true);            
define('ENABLE_RATE_LIMITING', true);              
define('MAX_REQUESTS_PER_HOUR', 10);               


define('ENABLE_SPAM_PROTECTION', true);            
define('MAX_MESSAGE_LENGTH', 5000);                
define('MIN_MESSAGE_LENGTH', 10);                  


define('DEBUG_MODE', false);                       
define('LOG_EMAILS', true);                        


define('ADDITIONAL_HEADERS', [
    'X-Mailer' => 'HexaHost.de Contact Form',
    'X-Priority' => '3',
    'X-MSMail-Priority' => 'Normal',
    'Importance' => 'Normal',
    'X-Report-Abuse' => 'Please report abuse here: abuse@hexahost.de',
    'List-Unsubscribe' => '<mailto:unsubscribe@hexahost.de>',
    'Precedence' => 'bulk'
]);


define('ALLOWED_EMAIL_DOMAINS', [
    
    
]);


define('BLACKLISTED_EMAILS', [
    
    
]);


if (!defined('SMTP_HOST') || !defined('SMTP_USERNAME') || !defined('SMTP_PASSWORD')) {
    die('SMTP-Konfiguration ist unvollständig. Bitte überprüfen Sie die mail-config.php');
}

if (!filter_var(SMTP_FROM_EMAIL, FILTER_VALIDATE_EMAIL)) {
    die('Ungültige SMTP_FROM_EMAIL Adresse');
}

if (!filter_var(SMTP_TO_EMAIL, FILTER_VALIDATE_EMAIL)) {
    die('Ungültige SMTP_TO_EMAIL Adresse');
}


function logEmail($type, $data) {
    if (!LOG_EMAILS) return;
    
    $logFile = __DIR__ . '/../logs/email.log';
    $logDir = dirname($logFile);
    
    if (!is_dir($logDir)) {
        mkdir($logDir, 0755, true);
    }
    
    $timestamp = date('Y-m-d H:i:s');
    $logEntry = "[$timestamp] $type: " . json_encode($data) . "\n";
    
    file_put_contents($logFile, $logEntry, FILE_APPEND | LOCK_EX);
}


function isValidEmail($email) {
    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
        return false;
    }
    
    
    if (in_array($email, BLACKLISTED_EMAILS)) {
        return false;
    }
    
    
    if (!empty(ALLOWED_EMAIL_DOMAINS)) {
        $domain = substr(strrchr($email, "@"), 1);
        if (!in_array($domain, ALLOWED_EMAIL_DOMAINS)) {
            return false;
        }
    }
    
    return true;
}


function getHexaHostConfig($key = null) {
    $config = [
        
        'from_email' => SMTP_FROM_EMAIL,
        'from_name' => 'HexaHost.de Kontaktformular',
        'to_email' => SMTP_TO_EMAIL,
        'to_name' => 'HexaHost Support',
        
        
        'max_requests_per_hour' => MAX_REQUESTS_PER_HOUR,
        'honeypot_field' => 'website',
        'enable_csrf' => ENABLE_CSRF_PROTECTION,
        'min_message_length' => MIN_MESSAGE_LENGTH,
        'max_message_length' => MAX_MESSAGE_LENGTH,
        
        
        'debug_mode' => DEBUG_MODE,
        'log_errors' => LOG_EMAILS,
    ];
    
    if ($key === null) {
        return $config;
    }
    
    return $config[$key] ?? null;
}
?>