/**
 * Domain Helper - Domein-specifieke functies
 * Maakt duidelijke scheiding tussen portal.itlive.nl en itlive.nl
 */

// Domein detectie – account.itlive.nl = eigen accountomgeving (geen portal)
function getCurrentDomain() {
    $host = $_SERVER['HTTP_HOST'] ?? '';
    
    if (stripos($host, 'account.itlive.nl') !== false) {
        return 'account';
    }
    if (stripos($host, 'portal.itlive.nl') !== false) {
        return 'portal';
    }
    if (stripos($host, 'itlive.nl') !== false) {
        return 'public';
    }
    
    return 'unknown';
}

// Base URL generatie – publieke hosts gebruiken eigen host; portal blijft intern.
function getBaseUrl() {
    $scheme = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on') ? 'https' : 'http';
    $host = $_SERVER['HTTP_HOST'] ?? '';
    $domain = getCurrentDomain();

    if ($domain === 'account') {
        return $scheme . '://' . $host;
    }
    return $scheme . '://itlive.nl';
}

// Portal URL generatie – NOOIT cross-domain naar portal.itlive.nl exposeren.
function getPortalUrl($path = '') {
    $scheme = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on') ? 'https' : 'http';
    $host = $_SERVER['HTTP_HOST'] ?? '';
    return $scheme . '://' . $host . (strpos($path, '/') === 0 ? '' : '/') . $path;
}

// Public URL generatie
function getPublicUrl($path = '') {
    return 'https://itlive.nl' . $path;
}

// Domein-specifieke navigation
function getDomainNavigation() {
    $domain = getCurrentDomain();
    
    if ($domain === 'portal') {
        return [
            ['label' => 'Dashboard', 'url' => '/dashboard/'],
            ['label' => 'Projecten', 'url' => '/projects/'],
            ['label' => 'Tools', 'url' => '/tools/'],
            ['label' => 'Support', 'url' => '/support/'],
            ['label' => 'Instellingen', 'url' => '/settings/']
        ];
    } else {
        return [
            ['label' => 'Home', 'url' => '/'],
            ['label' => 'Diensten', 'url' => '/diensten'],
            ['label' => 'AI Tools', 'url' => '/ai-tools'],
            ['label' => 'Tools', 'url' => '/tools'],
            ['label' => 'Over Ons', 'url' => '/over-ons'],
            ['label' => 'Contact', 'url' => '/contact']
        ];
    }
}

// Domein-specifieke header info – account = eigen titel, geen "Portal"
function getDomainHeader() {
    $domain = getCurrentDomain();
    
    if ($domain === 'account') {
        return [
            'title' => 'Account - IT Live',
            'description' => 'Uw account en klantportaal',
            'robots' => 'noindex, nofollow',
            'favicon' => '/favicon.ico'
        ];
    }
    if ($domain === 'portal') {
        return [
            'title' => 'IT Live Portal - Klantportaal',
            'description' => 'Beheer uw digitale diensten en projecten',
            'robots' => 'noindex, nofollow',
            'favicon' => '/favicon-portal.ico'
        ];
    }
    return [
        'title' => 'IT Live - Digitale Oplossingen voor MKB',
        'description' => 'Professionele websites, AI tools en digitale diensten voor ondernemers',
        'robots' => 'index, follow',
        'favicon' => '/favicon.ico'
    ];
}

// Check of path toegestaan is op huidig domein
function isPathAllowed($path) {
    $domain = getCurrentDomain();
    
    if ($domain === 'portal') {
        $allowed = [
            '/admin/', '/admin_portal/',
            '/customer/', '/customer_portal/',
            '/klant/', '/klant-portal/',
            '/agent/', '/agent_portal/',
            '/manager/', '/manager_portal/',
            '/dashboard/', '/login/', '/register/'
        ];
        foreach ($allowed as $allowed_path) {
            if (strpos($path, $allowed_path) === 0) return true;
        }
        return false;
    }
    if ($domain === 'account') {
        return strpos($path, '/customer_portal/') === 0 || $path === '/' || $path === '';
    }
    $allowed = [
            '/', '/index.php', '/index.html',
            '/diensten', '/diensten.php',
            '/over-ons', '/over-ons.php',
            '/contact', '/contact.php',
            '/ai-tools', '/ai-tools.php',
            '/tools', '/tools.php',
            '/idee', '/idee/',
            '/bedrijvencheck', '/bedrijvencheck/',
            '/lead-generator', '/lead-generator/',
            '/ai-site-builder', '/ai-site-builder/',
            '/website-builder', '/website-builder/',
            '/business-plan', '/business-plan/',
            '/404', '/404.php'
        ];
        
    foreach ($allowed as $allowed_path) {
        if (strpos($path, $allowed_path) === 0) return true;
    }
    return false;
}

// Automatische redirect indien nodig – account.itlive.nl NOOIT naar portal
function handleDomainRedirect() {
    $current_path = $_SERVER['REQUEST_URI'] ?? '';
    $path = parse_url($current_path, PHP_URL_PATH) ?: $current_path;
    $domain = getCurrentDomain();
    
    if (!isPathAllowed($path)) {
        if ($domain === 'portal') {
            header('Location: https://itlive.nl' . $current_path, true, 301);
            exit;
        }
        if ($domain === 'account') {
            // Account: alleen customer_portal; onbekend path → startpagina klantportaal, NOOIT portal
            header('Location: ' . getBaseUrl() . '/customer_portal/', true, 302);
            exit;
        }
        // Public domein met onbekend path → 404 (geen cross-domain redirect naar portal).
        http_response_code(404);
        exit;
    }
}

// Domein-specifieke footer links
function getDomainFooterLinks() {
    $domain = getCurrentDomain();
    
    if ($domain === 'portal') {
        return [
            ['label' => 'Dashboard', 'url' => '/dashboard/'],
            ['label' => 'Help', 'url' => '/help/'],
            ['label' => 'Support', 'url' => '/support/'],
            ['label' => 'Documentatie', 'url' => '/docs/']
        ];
    } else {
        return [
            ['label' => 'Home', 'url' => '/'],
            ['label' => 'Diensten', 'url' => '/diensten'],
            ['label' => 'AI Tools', 'url' => '/ai-tools'],
            ['label' => 'Over Ons', 'url' => '/over-ons'],
            ['label' => 'Contact', 'url' => '/contact'],
            ['label' => 'Privacy', 'url' => '/privacy'],
            ['label' => 'Voorwaarden', 'url' => '/voorwaarden']
        ];
    }
}

// Domein-specifieke CSS classes
function getDomainBodyClass() {
    $domain = getCurrentDomain();
    return 'domain-' . $domain;
}

// Domein-specifieke analytics tracking
function getDomainAnalytics() {
    $domain = getCurrentDomain();
    
    if ($domain === 'portal') {
        return [
            'ga_tracking_id' => 'UA-XXXXXXX-X-1',
            'gtm_container_id' => 'GTM-XXXXXXX1'
        ];
    } else {
        return [
            'ga_tracking_id' => 'UA-XXXXXXX-X',
            'gtm_container_id' => 'GTM-XXXXXXX'
        ];
    }
}

// Domein-specifieke branding
function getDomainBranding() {
    $domain = getCurrentDomain();
    
    if ($domain === 'account') {
        return [
            'logo' => '/assets/logo.svg',
            'logo_alt' => 'IT Live Account',
            'brand_color' => '#0d9488',
            'theme' => 'account'
        ];
    }
    if ($domain === 'portal') {
        return [
            'logo' => '/assets/logo-portal.svg',
            'logo_alt' => 'IT Live Portal',
            'brand_color' => '#ffc107',
            'theme' => 'portal'
        ];
    }
    return [
        'logo' => '/assets/logo.svg',
        'logo_alt' => 'IT Live',
        'brand_color' => '#007bff',
        'theme' => 'public'
    ];
}

// Helper functie om correcte link te genereren – op account: nooit portal-URL
function generateLink($path, $text = null, $class = '') {
    $domain = getCurrentDomain();
    $is_portal_path = strpos($path, '/admin/') === 0 || strpos($path, '/admin_portal/') === 0
        || strpos($path, '/customer/') === 0 || strpos($path, '/customer_portal/') === 0
        || strpos($path, '/klant/') === 0 || strpos($path, '/dashboard/') === 0;
    
    if ($domain === 'account') {
        $url = getBaseUrl() . (strpos($path, '/') === 0 ? '' : '/') . ltrim($path, '/');
    } elseif ($is_portal_path) {
        $url = getPortalUrl($path);
    } else {
        $url = getPublicUrl($path);
    }
    
    $link_text = $text ?: $path;
    return '<a href="' . htmlspecialchars($url) . '" class="' . htmlspecialchars($class) . '">' . htmlspecialchars($link_text) . '</a>';
}

// Automatische redirect handler (aanroepen bovenaan pagina)
if (!function_exists('handleDomainRedirect')) {
    handleDomainRedirect();
}