ImportStep.php

<?php
namespace Bitrix\UI\Integration\Rest;
 
use \Bitrix\Main;
use \Bitrix\Rest;
 
 
abstract class ImportStep {
    //region input info
    public string $entityCode;
    public Main\Type\Dictionary $data;
    public Main\Type\Dictionary $previousStep;
    public Rest\Configuration\Structure $structure;
    //end region
    //region OutputInfo
    public Main\Type\Dictionary $nextStep;
    public Main\ErrorCollection $errorCollection;
    //endregion
    public function __construct(Main\Event $event)
    {
        $this->entityCode = $event->getParameter('CODE');
        $this->data = new Main\Type\Dictionary($event->getParameter('CONTENT')['DATA']);
        $this->structure = new Rest\Configuration\Structure($event->getParameter('CONTEXT_USER'));
 
        $this->previousStep = new Main\Type\Dictionary($event->getParameter('CONTENT')['RATIO']);
        $this->nextStep = new Main\Type\Dictionary();
        $this->errorCollection = new Main\ErrorCollection();
 
        $this->init($event);
    }
 
    abstract public function init($event): void;
 
    abstract public function makeAStep(): void;
 
    public function makeAnAnswer(): ?array
    {
        return [
            'RATIO' => $this->nextStep->toArray(),
        ] + (($error = $this->errorCollection->current()) ? [
            'ERROR_MESSAGE' => $error->getMessage(),
            'ERROR_ACTION' => $error->getCode(),
        ] : []);
    }
 
    public static function fulfill(Main\Event $event): array
    {
        $step = new static($event);
        if ($step->errorCollection->isEmpty())
        {
            $step->makeAStep();
        }
        return $step->makeAnAnswer();
    }
}