externalizer.php

См. документацию.

<?php
 
 
namespace Bitrix\Rest\Integration;
 
 
use Bitrix\Main\Engine\Response\Converter;
use Bitrix\Main\Engine\Response\DataType\Page;
use Bitrix\Main\Result;
use Bitrix\Main\Type\Contract\Arrayable;

final class Externalizer extends ModificationFieldsBase
    implements Arrayable
{
    public function __construct(ViewManager $manager, $data = [])
    {
        $this->setFormat([
            self::TO_WHITE_LIST,
            self::TO_CAMEL,
            self::SORTING_KEYS
        ]);
        parent::__construct($manager, $data);
    }
 
    public function process()
    {
        $r = new Result();
 
        $data = $this->getData();
        $id = $this->getIdList($data);
 
        $data = $data[$id];
        if(in_array(self::TO_WHITE_LIST, $this->format))
        {
            $data = $this->externalize($data);
        }
 
        if(in_array(self::TO_CAMEL, $this->format))
        {
            $data = static::convertKeysToCamelCase([$id=>$data]);
        }
 
        if(in_array(self::SORTING_KEYS, $this->format))
        {
            $data = static::multiSortKeysArray($data);
        }
 
        return $r->setData(['data'=>$data]);
    }
 
    public function toArray()
    {
        return $this->process()->getData()['data'];
    }
 
    static public function multiSortKeysArray(array $data)
    {
        ksort($data, SORT_NATURAL);
 
        foreach ($data as $k=>&$item)
        {
            if(is_array($item))
                $item = static::multiSortKeysArray($item);
        }
 
        return $data;
    }

    private function externalize($fields)
    {
        $name = $this->getName();
        $controller = $this->getController();
        $view = $this->getView($controller);
 
        if($name == 'getfields'){}
        elseif($name == 'delete'){}
        elseif($name == 'get'
            || $name == 'add'
            || $name == 'update')
        {
            $fields = $view->externalizeFieldsGet($fields);
        }
        elseif($name == 'list')
        {
            $fields = $view->externalizeListFields($fields);
        }
        else
        {
            $fields = $view->externalizeResult($name, $fields);
        }
 
        return $fields;
    }

    private function getIdList($data)
    {
        return key($data);
    }
 
    static public function convertKeysToCamelCase($fields)
    {
        return Converter::toJson()
            ->process($fields);
    }
 
    public function getPage(Page $page)
    {
        $id = static::convertKeysToCamelCase($page->getId());
        return new Page($id, $this->toArray()[$id], $page->getTotalCount());
    }
}