<?php

namespace App\Controller\Administrative\System\StaffingRule;

use App\Service\Assignment\StaffingConfigurationException;
use App\Service\Export\StaffingPreviewExporter;
use Knp\Component\Pager\PaginatorInterface;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Attribute\Route;
use Symfony\Component\Security\Http\Attribute\IsGranted;

class PreviewController extends AbstractController
{
    public function __construct(
        private readonly StaffingPreviewExporter $previewExporter,
        private readonly PaginatorInterface $paginator,
    ) {
    }

    #[Route('/administrative/system/staffing-rule/preview', name: 'app_administrative_system_staffing_rule_preview')]
    #[IsGranted('ROLE_ADMINISTRATIVE')]
    public function index(Request $request): Response
    {
        try {
            $rows = $this->previewExporter->rows();
        } catch (StaffingConfigurationException $e) {
            $this->addFlash('error', 'Ein Jobprofil oder Honorar der Besetzungsmatrix ist nicht (mehr) vorhanden: '.$e->getMessage());

            return $this->redirectToRoute('app_administrative_system_staffing_rule_index');
        }

        // The candidates are a computed list, not a query: page the finished rows. The Excel
        // export stays the full list.
        $pagination = $this->paginator->paginate(
            $rows,
            $request->query->getInt('page', 1),
            $request->query->getInt('limit', 50),
        );

        return $this->render('administrative/system/staffing_rule/preview.html.twig', [
            'pagination' => $pagination,
        ]);
    }
}