<?php

declare(strict_types=1);

namespace Mummert\SurveyBundle\Controller\FrontendModule;

use Contao\Config;
use Contao\CoreBundle\Controller\FrontendModule\AbstractFrontendModuleController;
use Contao\CoreBundle\DependencyInjection\Attribute\AsFrontendModule;
use Contao\CoreBundle\Twig\FragmentTemplate;
use Contao\ModuleModel;
use Mummert\SurveyBundle\Repository\SurveyRepository;
use Mummert\SurveyBundle\Service\SurveyResultsViewService;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;

#[AsFrontendModule(type: 'survey_results', category: 'survey', template: 'show_survey_results')]
final class ShowSurveyResultsController extends AbstractFrontendModuleController
{
    public function __construct(
        private readonly SurveyRepository $surveyRepository,
        private readonly SurveyResultsViewService $surveyResultsViewService,
        private readonly UrlGeneratorInterface $urlGenerator,
    ) {
    }

    protected function getResponse(FragmentTemplate $template, ModuleModel $model, Request $request): Response
    {
        $publicAlias = $this->resolvePublicAlias($request);

        if ('' === $publicAlias) {
            $template->set('errorMessage', 'Es wurde kein Umfrage-Link auf der Ergebnisseite gefunden.');
            $template->set('survey', null);
            $template->set('questionResults', []);
            $template->set('completedSubmissionCount', 0);

            return $template->getResponse();
        }

        $survey = $this->surveyRepository->findByPublicAlias($publicAlias, false);

        if (null === $survey) {
            $template->set('errorMessage', 'Die Umfrage wurde nicht gefunden.');
            $template->set('survey', null);
            $template->set('questionResults', []);
            $template->set('completedSubmissionCount', 0);

            return $template->getResponse();
        }

        if ($htmlHeadBag = $this->getHtmlHeadBag()) {
            $htmlHeadBag->setTitle((string) $survey->title.' - Ergebnisse');
        }

        $resultsData = $this->surveyResultsViewService->buildForSurvey($survey);

        $template->set('errorMessage', null);
        $template->set('survey', $survey);
        $template->set('completedSubmissionCount', $resultsData['completedSubmissionCount']);
        $template->set('downloadUrl', $this->buildDownloadUrl((string) $survey->alias));
        $template->set('pdfDownloadUrl', $this->hasGotenbergConfiguration() ? $this->buildPdfDownloadUrl((string) $survey->alias) : null);
        $template->set('questionResults', $resultsData['questionResults']);

        return $template->getResponse();
    }

    private function buildDownloadUrl(string $alias): string
    {
        return $this->urlGenerator->generate('mummert_survey_results_export', ['alias' => $alias]);
    }

    private function buildPdfDownloadUrl(string $alias): string
    {
        return $this->urlGenerator->generate('mummert_survey_results_pdf_export', ['alias' => $alias]);
    }

    private function hasGotenbergConfiguration(): bool
    {
        return '' !== trim((string) Config::get('surveyGotenbergUrl'));
    }

    private function resolvePublicAlias(Request $request): string
    {
        $candidate = $request->attributes->get('auto_item');

        if (\is_string($candidate) && '' !== trim($candidate)) {
            return trim($candidate);
        }

        return trim((string) $request->query->get('auto_item', ''));
    }
}