CreatingPostNodesOutsideOfThePostBuilder.php

<?php

declare(strict_types=1);

namespace App;

use Drupal\atdc\Builder\PostBuilder;
use Drupal\node\Entity\Node as DrupalNode;
use PHPStan\Analyser\Scope;
use PHPStan\Rules\Rule;
use PHPStan\Rules\RuleErrorBuilder;
use PhpParser\Node;
use PhpParser\Node\Name\FullyQualified;

/**
 * @implements Rule<\PhpParser\Node\Expr\StaticCall>
 */
final class CreatingPostNodesOutsideTheRepositoryRule implements Rule {

  public function getNodeType(): string {
    return 'PhpParser\Node\Expr\StaticCall';
  }

  public function processNode(Node $node, Scope $scope): array {
    if (!$node->class instanceof FullyQualified) {
      return [];
    }

    if ($node->class->toString() !== DrupalNode::class) {
      return [];
    }

    if ($node->name->toString() !== 'create') {
      return [];
    }

    // Return is there are no arguments to Node::create().
    // We only need to continue if the "type" is "post".
    if (count($node->args) === 0) {
      return [];
    }

    $items = $node->args[0]->value->items;
    foreach ($items as $item) {
      if ($item->key->value !== 'type' || $item->value->value !== 'post') {
        return [];
      }
    }

    // Allow creating a post within the PostBuilder.
    if ($scope->isInClass()) {
      $inClassReflection = $scope->getClassReflection();

      if ($inClassReflection->getName() === PostBuilder::class) {
        return [];
      }
    }

    return [
      RuleErrorBuilder::message('Create posts using the PostNodeRepository')
        ->build(),
    ];
  }

}