<?php
/**
 * HexaHost.de – zentrale Domain- und Umgebungskonfiguration
 */

if (!defined('SITE_DOMAIN_PRODUCTION')) {
    define('SITE_DOMAIN_PRODUCTION', 'hexahost.de');
}

if (!defined('SITE_DOMAIN_DEVELOPMENT')) {
    define('SITE_DOMAIN_DEVELOPMENT', 'dev.hexahost.de');
}

/**
 * Aktuellen HTTP-Host (ohne Port) ermitteln
 *
 * @return string
 */
function getSiteHost()
{
    $host = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : SITE_DOMAIN_PRODUCTION;
    $host = strtolower($host);

    if (strpos($host, ':') !== false) {
        $host = explode(':', $host, 2)[0];
    }

    return $host;
}

/**
 * true, wenn die Seite unter der Dev-Domain läuft
 *
 * @return bool
 */
function isDevelopmentSite()
{
    return getSiteHost() === SITE_DOMAIN_DEVELOPMENT;
}

/**
 * Basis-URL der aktuellen Anfrage (Schema + Host)
 *
 * @return string
 */
function getSiteBaseUrl()
{
    $https = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off')
        || (isset($_SERVER['SERVER_PORT']) && (int) $_SERVER['SERVER_PORT'] === 443);

    $scheme = $https ? 'https' : 'http';

    return $scheme . '://' . getSiteHost();
}

/**
 * Erlaubte CORS-Origins für AJAX (Kontaktformular)
 *
 * @return array<int, string>
 */
function getAllowedOrigins()
{
    return [
        'https://' . SITE_DOMAIN_PRODUCTION,
        'https://www.' . SITE_DOMAIN_PRODUCTION,
        'https://' . SITE_DOMAIN_DEVELOPMENT,
        'http://localhost',
        'http://127.0.0.1',
        'http://localhost:8000',
    ];
}

/**
 * Kanonische Basis-URL für SEO (Produktion immer hexahost.de)
 *
 * @return string
 */
function getCanonicalBaseUrl()
{
    return 'https://' . SITE_DOMAIN_PRODUCTION;
}