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Edit File: UpdateStepsController.php

<?php declare(strict_types = 1);

namespace MailPoet\Automation\Engine\Builder;

if (!defined('ABSPATH')) exit;

use MailPoet\Automation\Engine\Data\Automation;
use MailPoet\Automation\Engine\Data\Step;
use MailPoet\Automation\Engine\Exceptions;
use MailPoet\Automation\Engine\Registry;

class UpdateStepsController {
  /** @var Registry */
  private $registry;

public function __construct(
    Registry $registry
  ) {
    $this->registry = $registry;
  }

public function updateSteps(Automation $automation, array $data): Automation {
    $steps = [];
    foreach ($data as $index => $stepData) {
      $step = $this->processStep($stepData, $automation->getStep($stepData['id']));
      $updatedStep = $this->maybeRunOnDuplicate($step);
      $steps[$index] = $updatedStep;
    }
    $automation->setSteps($steps);
    return $automation;
  }

private function maybeRunOnDuplicate(Step $step): Step {
    if ($step->getType() !== 'action') {
      return $step;
    }

$args = $step->getArgs();
    if (empty($args['stepDuplicated'])) {
      return $step;
    }

$action = $this->registry->getAction($step->getKey());
    if (!$action) {
      return $step;
    }

$duplicatedStep = $action->onDuplicate($step);
    $dupArgs = $duplicatedStep->getArgs();
    unset($dupArgs['stepDuplicated']);

return new Step(
      $duplicatedStep->getId(),
      $duplicatedStep->getType(),
      $duplicatedStep->getKey(),
      $dupArgs,
      $duplicatedStep->getNextSteps(),
      $duplicatedStep->getFilters()
    );
  }

private function processStep(array $data, ?Step $existingStep): Step {
    $key = $data['key'];
    $step = $this->registry->getStep($key);
    if (!$step && $existingStep && $data !== $existingStep->toArray()) {
      throw Exceptions::automationStepNotFound($key);
    }
    return Step::fromArray($data);
  }
}

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