Listener to publish a Soft Delete with Mercure on API Platform project

PublishMercureSoftDeletesListener.php

<?php

namespace App\Doctrine\Mercure\EventListener;

use ApiPlatform\Core\Api\IriConverterInterface;
use ApiPlatform\Core\Api\UrlGeneratorInterface;
use Doctrine\Persistence\Event\LifecycleEventArgs;
use Symfony\Component\Mercure\HubInterface;
use Symfony\Component\Mercure\Update;

/**
 * Entity Listener for catching Soft Delete and publishing it on Mercure hub
 */
final class PublishMercureSoftDeletesListener
{
    private IriConverterInterface $iriConverter;
    private HubInterface $hub;
  
    public function __construct(IriConverterInterface $iriConverter, HubInterface $hub)
    {
        $this->iriConverter = $iriConverter;
        $this->hub = $hub;
    }

    public function postSoftDelete(LifecycleEventArgs $args): void
    {
        $softDeletedObject = $args->getObject();
      
        // Put your Mercure options here or try to retrieve them from the ApiResource annotation
        $mercureOptions = [...];
        if (!$mercureOptions) {
            return;
        }

        $defaultTopic = $this->iriConverter->getIriFromItem($softDeletedObject, UrlGeneratorInterface::ABS_URL);

        $softDeletedInfo = ['@id' => $this->iriConverter->getIriFromItem($softDeletedObject)];

        $update = new Update(
            $mercureOptions['topics'] ?? $defaultTopic,
            json_encode($softDeletedInfo),
            $mercureOptions['private'] ?? false,
            $mercureOptions['id'] ?? null,
            $mercureOptions['type'] ?? null,
            $mercureOptions['retry'] ?? null
        );

        $this->hub->publish($update);
    }
}

services.yaml

services:
    App\Doctrine\Mercure\EventListener\PublishMercureSoftDeletesListener:
        tags:
            - { name: doctrine.event_listener, event: postSoftDelete }

This Gist works with API Platform, Mercure and the StofDoctrineExtensionsBundle.