WHMCS Hook - Sakrivanje Payment Gateway-a na osnovu valute

<?php
/**
 * WHMCS Hook - Sakrivanje Payment Gateway-a na osnovu valute
 * Autor: Luka @ dcx.rs
 * Ovaj hook sakriva:
 * - PayPal PPCP (paypal_ppcpv) za RSD valutu
 * - Bank Transfer (banktransfer) za USD valutu
 */

use WHMCS\Database\Capsule;

// Hook za cart stranicu
add_hook('ClientAreaPageCart', 1, function($vars) {
    // Proverava da li postoje potrebni podaci
    if (!isset($vars['currency']['code']) || !isset($vars['gateways']) || !is_array($vars['gateways'])) {
        return array();
    }
    
    $currencyCode = $vars['currency']['code'];
    $gateways = $vars['gateways'];
    
    // Filtriranje gateway-a na osnovu valute
    $filteredGateways = array();
    
    foreach ($gateways as $gateway) {
        $shouldShow = true;
        
        // Sakrivanje PayPal PPCP za RSD
        if ($currencyCode == 'RSD' && isset($gateway['sysname']) && $gateway['sysname'] == 'paypal_ppcpv') {
            $shouldShow = false;
        }
        
        // Sakrivanje Bank Transfer za USD
        if ($currencyCode == 'USD' && isset($gateway['sysname']) && $gateway['sysname'] == 'banktransfer') {
            $shouldShow = false;
        }
        
        if ($shouldShow) {
            $filteredGateways[] = $gateway;
        }
    }
    
    return array('gateways' => $filteredGateways);
});

// Hook za view invoice stranicu
add_hook('ClientAreaPageViewInvoice', 1, function($vars) {
    // Proverava da li postoji invoiceid i gatewaydropdown
    if (!isset($vars['invoiceid']) || !isset($vars['gatewaydropdown'])) {
        return array();
    }
    
    $invoiceId = $vars['invoiceid'];
    
    try {
        // Dobijanje valute fakture iz baze
        $invoice = Capsule::table('tblinvoices')
            ->leftJoin('tblclients', 'tblinvoices.userid', '=', 'tblclients.id')
            ->leftJoin('tblcurrencies', 'tblclients.currency', '=', 'tblcurrencies.id')
            ->where('tblinvoices.id', $invoiceId)
            ->select('tblcurrencies.code as currency_code')
            ->first();
        
        if (!$invoice) {
            return array();
        }
        
        $currencyCode = $invoice->currency_code;
        
        // Lista gateway-a koje treba sakriti na osnovu valute
        $gatewaysToHide = array();
        
        if ($currencyCode == 'RSD') {
            $gatewaysToHide[] = 'paypal_ppcpv';
        }
        
        if ($currencyCode == 'USD') {
            $gatewaysToHide[] = 'banktransfer';
        }
        
        // Ako nema gateway-a za sakrivanje, vrati prazan array
        if (empty($gatewaysToHide)) {
            return array();
        }
        
        // Parsiranje HTML dropdown-a
$dom = new DOMDocument('1.0', 'UTF-8');
@$dom->loadHTML('<?xml encoding="UTF-8">' . $vars['gatewaydropdown']);
        
        
        $xpath = new DomXPath($dom);
        
        // Kreiranje xPath uslova za uklanjanje
        $xpath_conditions = array();
        foreach ($gatewaysToHide as $gateway) {
            $xpath_conditions[] = '@value="' . $gateway . '"';
        }
        
        // Spajanje uslova sa " or "
       $xpath_conditions = implode(' or ', $xpath_conditions);
 
        // Pronalaženje i uklanjanje option elemenata
        foreach($xpath->query('//select/option[(' . $xpath_conditions . ')]') as $node) {
            $node->parentNode->removeChild($node);
        }
        
        // Vraćanje modifikovanog dropdown-a
        return array(
            'gatewaydropdown' => $dom->saveHTML()
        );
        
    } catch (Exception $e) {
        return array();
    }
});
?>