context.php

<?php
 
namespace Bitrix\Sale\PaySystem;
 
use Bitrix\Main;
 
final class Context
{
    private $url;
 
    public function __construct()
    {
        $this->url = $this->getCurrentUrl();
    }
 
    public function setUrl(string $url): void
    {
        $this->url = $url;
    }
 
    public function getUrl(): string
    {
        return $this->url;
    }
 
    private function getCurrentUrl(): string
    {
        $request = Main\Application::getInstance()->getContext()->getRequest();
 
        $requestUri = null;
        $host = null;
        if (class_exists('\LandingPubComponent'))
        {
            $landingInstance = \LandingPubComponent::getMainInstance();
            if ($landingInstance)
            {
                $context = Main\Context::getCurrent();
 
                $realFilePath = $context->getServer()->get('REAL_FILE_PATH');
                if (!$realFilePath)
                {
                    $realFilePath = $_SERVER['REAL_FILE_PATH'] ?? null;
                }
                if (!$realFilePath)
                {
                    $realFilePath = $context->getServer()->get('SCRIPT_NAME');
                }
 
                $realFilePath = str_replace('/index.php', '/', $realFilePath);
                $requestUri = $request->getRequestUri();
 
                $landingUrl = \Bitrix\Landing\Site::getPublicUrl($landingInstance['SITE_ID']);
                if (mb_strpos($landingUrl, $realFilePath) === false)
                {
                    $requestUri = str_replace($realFilePath.$landingInstance['SITE_ID'], '', $requestUri);
                }
 
                $uri = new Main\Web\Uri($landingUrl);
                $host = $uri->getHost();
            }
        }
 
        if (!$host)
        {
            $host = $request->getHttpHost();
        }
 
        if (!$requestUri)
        {
            $requestUri = $request->getRequestUri();
        }
 
        return ($request->isHttps() ? "https://" : "http://").$host.$requestUri;
    }
}