base.php

<?php
 
namespace Bitrix\Rest\Url;
 
use \Bitrix\Main\Web\Uri;
 
class Base
{
    protected $directory = '';
    protected $pages = [];
    protected static $instance;
 
    final public static function getInstance()
    {
        if (!isset(static::$instance))
        {
            static::$instance = new static();
        }
        return static::$instance;
    }
 
    protected function getDir()
    {
        return SITE_DIR.$this->directory;
    }
 
    protected function getReplaced(string $url, $replace = null, $subject = null)
    {
        if (!is_null($replace) && !is_null($subject))
        {
            $url = str_replace($replace, $subject, $url);
        }
 
        return $url;
    }
 
    protected function addParams($url, $params)
    {
        if (is_array($params))
        {
            $uri = new Uri($url);
            $uri->addParams($params);
            $url = $uri->getUri();
        }
 
        return $url;
    }
 
    protected function getUrl($page, $replace = null, $subject = null, $query = null)
    {
        $url = null;
        if(array_key_exists($page, $this->pages))
        {
            $url = $this->getDir().$this->pages[$page];
 
            if (!is_null($replace) && !is_null($subject))
            {
                $url = $this->getReplaced($url, $replace, $subject);
            }
            $url = $this->getReplaced($url, '//', '/');
 
            if(is_array($query))
            {
                $url = $this->addParams($url, $query);
            }
        }
 
        return $url;
    }
 
}