<?php

namespace App\Controller\Api;

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)
    {
    }

    #[Route(path: '/last-update', name: 'api_last_update', methods: ['GET'])]
    public function index(): JsonResponse
    {
        if (false === $this->xmlExport->has('uebertragung.info')) {
            $lastUploadAt = null;
        } else {
            $file = $this->xmlExport->read('uebertragung.info');
            $lines = explode("\n", $file);
            $line = trim($lines[0]);

            if (true === empty($line)) {
                $lastUploadAt = null;
            } else {
                $lastUploadAt = \DateTime::createFromFormat('d.m.Y H:i:s', $line);
            }
        }

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