<?php

/*
 * This file is part of the Maestro Project.
 * Copyright (C) Compos Juliot
 */

namespace App\Application\Event;

use App\Application\Message\GenerationExecuteMessage;
use App\Application\Message\GenerationNotificationMessage;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
use Symfony\Component\Messenger\Stamp\RedeliveryStamp;
use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
use App\Application\Adapter\MercureHubInterface;
use Symfony\Component\Messenger\Exception\UnrecoverableMessageHandlingException;

class FailedMessageSubscriber implements EventSubscriberInterface
{
    /** @var ParameterBagInterface */
    private $params;

    /** @var MercureHubInterface */
    private $mercureHubService;

    public function __construct(ParameterBagInterface $params, MercureHubInterface $mercureHubService)
    {
        $this->params = $params;
        $this->mercureHubService = $mercureHubService;
    }

    public static function getSubscribedEvents()
    {
        return [
            WorkerMessageFailedEvent::class => 'onMessageFailed'
        ];
    }

    public function onMessageFailed(WorkerMessageFailedEvent $event)
    {
        $error = $event->getThrowable(); // HandlerFailedException
        $exceptionsArray = reset($error); // Exceptions array
        $exception = reset($exceptionsArray); // First Exception from array
        $exceptionClass = get_class($exception); // Exception class

        $envelope = $event->getEnvelope();
        $message = $envelope->getMessage();
        $messageClass = get_class($message);
        $lastStamp = $envelope->last(RedeliveryStamp::class);

        $retryCount = $this->params->get("messenger_max_retries");
        $data = [
            "error" => null,
            "userId" => null,
            "pageId" => null,
            "projectId" => null,
            "exportId" => null,
            "version" => null
        ];
        $genericMessage = "Failed to";

        switch ($messageClass) {
            case GenerationExecuteMessage::class:
                $data['userId'] = $message->getGenerationNotificationMessage()->getUserId();
                $data['pageId'] = $message->getGenerationNotificationMessage()->getPageId();
                $data['projectId'] = $message->getGenerationNotificationMessage()->getProjectId();
                $data['exportId'] = $message->getGenerationNotificationMessage()->getExportId();
                $data["error"] = "$genericMessage get Indesign's data";
                $data['version'] = $message->getGenerationNotificationMessage()->getPageDuplicateId();

                $topicPreview = $message->getGenerationNotificationMessage()->getGenerationType() != 2 ? $this->params->get('mercure_topic_preview') : $this->params->get('mercure_topic_package');

                $this->mercureHubService->publish($topicPreview, $data);
                break;
            case GenerationNotificationMessage::class:
                $data['userId'] = $message->getUserId();
                $data['pageId'] = $message->getPageId();
                $data['projectId'] = $message->getProjectId();
                $data['exportId'] = $message->getExportId();
                $data['version'] = $message->getPageDuplicateId();

                $operation = "cancelled";

                if ($exceptionClass === UnrecoverableMessageHandlingException::class) {
                    $verb = "save";
                } else {
                    $verb = "get";

                    if (!$lastStamp || !method_exists($lastStamp, 'getRetryCount') || $retryCount !== $lastStamp->getRetryCount()) {
                        $operation = "new try ...";
                    }
                }

                $data["error"] = "$genericMessage $verb page's preview, $operation";

                $topicPreview = $message->getGenerationType() != 2 ? $this->params->get('mercure_topic_preview') : $this->params->get('mercure_topic_package');

                $this->mercureHubService->publish($topicPreview, $data);
                break;
        }
    }
}