json.php

<?php
 
namespace Bitrix\Main\Engine\Response;
 
 
use Bitrix\Main\Type\Contract;
use Bitrix\Main;
use Bitrix\Main\Type\DateTime;
 
class Json extends Main\HttpResponse
{
    protected $data;
    protected $jsonEncodingOptions = 0;
 
    public function __construct($data = null, $options = 0)
    {
        parent::__construct();
 
        $this->jsonEncodingOptions = $options;
        $this->setData($data);
    }
 
    public function setData($data)
    {
        //todo It's a crutch. While we are supporting php 5.3 we have to keep this code.
        //When minimal version is php 5.5 we can implement JsonSerializable in DateTime, Uri and remove this code.
        $data = $this->processData($data);
 
        if ($data instanceof \JsonSerializable)
        {
            $this->data = Main\Web\Json::encode($data->jsonSerialize(), $this->jsonEncodingOptions);
        }
        elseif ($data instanceof Contract\Jsonable)
        {
            $this->data = $data->toJson($this->jsonEncodingOptions);
        }
        elseif ($data instanceof Contract\Arrayable)
        {
            $this->data = Main\Web\Json::encode($data->toArray(), $this->jsonEncodingOptions);
        }
        else
        {
            $this->data = Main\Web\Json::encode($data, $this->jsonEncodingOptions);
        }
 
        return $this->setContent($this->data);
    }
 
    private function processData($data)
    {
        if ($data instanceof \JsonSerializable)
        {
            $data = $data->jsonSerialize();
        }
        elseif ($data instanceof Contract\Jsonable)
        {
            $data = $data->toJson($this->jsonEncodingOptions);
        }
        elseif ($data instanceof Contract\Arrayable)
        {
            $data = $data->toArray();
        }
 
        if ($data instanceof DateTime)
        {
            return date('c' , $data->getTimestamp());
        }
 
        if ($data instanceof Main\Type\Date)
        {
            return date('c', makeTimeStamp($data, FORMAT_DATE) + date("Z"));
        }
 
        if ($data instanceof Main\Web\Uri)
        {
            return $data->getUri();
        }
 
        if ($data instanceof Main\UI\PageNavigation)
        {
            return array(
                'currentPage' => $data->getCurrentPage(),
                'pageSize' => $data->getPageSize(),
                'recordCount' => $data->getRecordCount(),
            );
        }
 
        if (is_array($data) || $data instanceof \Traversable)
        {
            foreach ($data as $key => $item)
            {
                $data[$key] = $this->processData($item);
            }
        }
 
        return $data;
    }
 
    public function send()
    {
        $this->addHeader('Content-Type', 'application/json; charset=UTF-8');
        parent::send();
    }
}