_ExampleReactionType.php

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<?php
 
declare(strict_types=1);
 
namespace ‪T3docs\Examples\Reaction;
 
use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\StreamFactoryInterface;
use ‪TYPO3\CMS\Core\Registry;
use ‪TYPO3\CMS\Reactions\Model\ReactionInstruction;
use ‪TYPO3\CMS\Reactions\Reaction\ReactionInterface;
 
class ‪ExampleReactionType implements ‪ReactionInterface
{
    private const ‪REGISTRY_KEY = 'changed_ids';
 
    public function ‪__construct(
        private readonly ‪Registry $registry,
        private readonly ResponseFactoryInterface $responseFactory,
        private readonly StreamFactoryInterface $streamFactory,
    ) {}
 
    public static function ‪getType(): string
    {
        return 'example-reaction-type';
    }
 
    public static function ‪getDescription(): string
    {
        return 'Example reaction type';
    }
 
    public static function ‪getIconIdentifier(): string
    {
        return 'tx_examples-dummy';
    }
 
    public function ‪react(
        ServerRequestInterface $request,
        array $payload,
        ‪ReactionInstruction $reaction
    ): ResponseInterface {
        $id = $payload['id'] ?? 0;
        if ($id <= 0) {
            $data = [
                'success' => false,
                'error' => 'id not given',
            ];
 
            return $this->‪jsonResponse($data, 400);
        }
 
        $this->‪updateRegistryEntry($id);
 
        return $this->‪jsonResponse(['success' => true]);
    }
 
    private function ‪updateRegistryEntry(int $id): void
    {
        $ids = $this->registry->get('tx_examples', self::REGISTRY_KEY) ?? [];
        $ids[] = $id;
        $ids = array_unique($ids);
        $this->registry->set('tx_examples', self::REGISTRY_KEY, $ids);
    }
 
    private function ‪jsonResponse(array $data, int ‪$statusCode = 201): ResponseInterface
    {
        return $this->responseFactory
            ->createResponse(‪$statusCode)
            ->withHeader('Content-Type', 'application/json')
            ->withBody($this->streamFactory->createStream(json_encode($data, JSON_THROW_ON_ERROR)));
    }
}