<?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\FrontendUser;
use Contao\ModuleModel;
use Contao\PageModel;
use Mummert\SurveyBundle\Model\SurveyModel;
use Mummert\SurveyBundle\Repository\SurveyEditorRepository;
use Mummert\SurveyBundle\Repository\SurveyRepository;
use Mummert\SurveyBundle\Service\SurveyEditorService;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;

#[AsFrontendModule(type: 'member_survey_list', category: 'survey', template: 'member_survey_list')]
#[AsFrontendModule(type: 'member_survey_template_list', category: 'survey', template: 'member_survey_list')]
final class MemberSurveyListController extends AbstractFrontendModuleController
{
    public function __construct(
        private readonly SurveyRepository $surveyRepository,
        private readonly SurveyEditorRepository $surveyEditorRepository,
        private readonly SurveyEditorService $surveyEditorService,
    ) {
    }

    protected function getResponse(FragmentTemplate $template, ModuleModel $model, Request $request): Response
    {
        $templatesOnly = 'member_survey_template_list' === (string) ($model->type ?? '');
        $user = $this->getUser();

        if (!$user instanceof FrontendUser) {
            $template->set('loginRequired', true);
            $template->set('surveys', []);
            $template->set('createUrl', null);
            $template->set('templatesOnly', $templatesOnly);

            return $template->getResponse();
        }

        if ($request->isMethod('POST') && $request->request->has('_survey_action')) {
            return $this->handleAction($request, (int) $user->id);
        }

        $editPage = $templatesOnly ? null : $this->resolvePage((int) ($model->surveyEditPage ?? 0));
        $readerPage = $this->resolvePage((int) $this->getContaoAdapter(Config::class)->get('surveyReaderPage'));
        $resultsPage = $this->resolvePage((int) $this->getContaoAdapter(Config::class)->get('surveyResultsPage'));
        $items = [];

        foreach ($this->surveyRepository->findEditableByMember((int) $user->id, $templatesOnly) as $survey) {
            $surveyId = (int) $survey['id'];
            $alias = (string) $survey['alias'];

            $items[] = [
                'id' => $surveyId,
                'title' => (string) $survey['title'],
                'description' => (string) ($survey['description'] ?? ''),
                'isTemplate' => !empty($survey['isTemplate']),
                'isActive' => !empty($survey['isActive']),
                'isLocked' => !empty($survey['isLocked']),
                'published' => !empty($survey['published']),
                'questionCount' => (int) ($survey['questionCount'] ?? 0),
                'participationCount' => (int) ($survey['participationCount'] ?? 0),
                'editUrl' => $editPage instanceof PageModel ? $this->generateContentUrl($editPage, ['survey' => $surveyId]) : null,
                'publicUrl' => $readerPage instanceof PageModel ? $this->generateContentUrl($readerPage, ['parameters' => '/'.$alias]) : null,
                // Absolute URL für den "Link kopieren"-Button, damit der geteilte
                // Link auch außerhalb der Seite funktioniert.
                'copyUrl' => $readerPage instanceof PageModel ? $this->generateContentUrl($readerPage, ['parameters' => '/'.$alias], UrlGeneratorInterface::ABSOLUTE_URL) : null,
                'draftUrl' => $readerPage instanceof PageModel ? $this->generateContentUrl($readerPage, ['parameters' => '/'.$alias, 'preview' => '1']) : null,
                'resultsUrl' => $resultsPage instanceof PageModel ? $this->generateContentUrl($resultsPage, ['parameters' => '/'.$alias]) : null,
            ];
        }

        if ($templatesOnly && [] === $items) {
            return new Response('');
        }

        $template->set('loginRequired', false);
        $template->set('surveys', $items);
        $template->set('createUrl', !$templatesOnly && $editPage instanceof PageModel ? $this->generateContentUrl($editPage, ['create' => '1']) : null);
        $template->set('templatesOnly', $templatesOnly);

        return $template->getResponse();
    }

    private function handleAction(Request $request, int $memberId): Response
    {
        $surveyId = (int) $request->request->get('item_id', 0);
        $action = (string) $request->request->get('_survey_action');
        $token = (string) $request->request->get('_token', '');

        if ($surveyId <= 0 || '' === $action) {
            throw new \RuntimeException('Ungültige Umfrage-Aktion.');
        }

        // Session-basierter Symfony-Token (wie im Editor): zuverlässig für
        // eingeloggte Mitglieder. Der Contao-REQUEST_TOKEN ist cookie-gebunden
        // und im Frontend-Fragment-Flow nicht stabil verfügbar.
        if (!$this->isCsrfTokenValid($action.'-'.$surveyId, $token)) {
            throw new \RuntimeException('Ungültiger CSRF-Token.');
        }

        $survey = $this->resolveEditableSurvey($surveyId, $memberId);

        try {
            if ('duplicate-survey' === $action) {
                $duplicate = $this->surveyEditorService->duplicateSurvey($survey, $memberId);
                $this->addFlash('success', sprintf('Die Umfrage "%s" wurde als Kopie angelegt.', (string) $duplicate->title));
            }

            if ('publish-survey' === $action) {
                $this->surveyEditorService->publishSurvey($survey, $memberId);
                $this->addFlash('success', 'Die Umfrage ist jetzt veröffentlicht.');
            }

            if ('toggle-active' === $action) {
                $isActive = $this->surveyEditorService->toggleSurveyActive($survey, $memberId);
                $this->addFlash('success', $isActive ? 'Die Umfrage ist jetzt wieder aktiv.' : 'Die Umfrage wurde vorübergehend deaktiviert.');
            }

            if ('delete-survey' === $action) {
                $this->surveyEditorService->deleteSurvey($survey);
                $this->addFlash('success', 'Die Umfrage mit allen Fragen, Antworten und Ergebnissen wurde gelöscht.');
            }
        } catch (\Throwable $exception) {
            $this->addFlash('error', $exception->getMessage());
        }

        return new RedirectResponse($request->getBaseUrl().$request->getPathInfo());
    }

    private function resolveEditableSurvey(int $surveyId, int $memberId): SurveyModel
    {
        $survey = $this->surveyRepository->findById($surveyId);

        if (!$survey instanceof SurveyModel || !$this->surveyEditorRepository->isEditor($surveyId, $memberId)) {
            throw new \RuntimeException('Sie dürfen diese Umfrage nicht bearbeiten.');
        }

        return $survey;
    }

    private function resolvePage(int $pageId): ?PageModel
    {
        if ($pageId <= 0) {
            return null;
        }

        $page = $this->getContaoAdapter(PageModel::class)->findById($pageId);

        return $page instanceof PageModel ? $page : null;
    }
}