<?php

namespace App\Controller\Api;

use App\BusProNet\Model\XmlExportInfo;
use League\Flysystem\FilesystemOperator;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\Routing\Attribute\Route;
use Symfony\Component\Security\Http\Attribute\IsGranted;

#[Route('/api')]
#[IsGranted('ROLE_OAUTH2_API')]
class LastUpdateController extends AbstractController
{
    public function __construct(private readonly FilesystemOperator $xmlExport)
    {
    }

    /**
     * A missing or unreadable marker answers `{"timestamp": null}`, never a 500: consumers
     * poll this for change detection and treat null as "unknown".
     */
    #[Route(path: '/last-update', name: 'api_last_update', methods: ['GET'])]
    public function index(): JsonResponse
    {
        $info = XmlExportInfo::fromStorage($this->xmlExport);

        return $this->json(['timestamp' => $info?->lastTransfer->format('Y-m-d H:i:s')]);
    }
}