<?php

namespace App\Controller;

use App\Content\ButtonDesign;
use App\Content\FormRepository;
use App\Content\MediaLibrary;
use App\Content\Theme;
use App\Domain\InvalidForm;
use App\Domain\StaleWrite;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Attribute\Route;

final class FormAdminController extends AbstractController
{
    public function __construct(private FormRepository $forms, private Theme $theme, private MediaLibrary $media)
    {
    }

    #[Route('/%kant.admin_path%/forms', name: 'admin_forms', methods: ['GET'])]
    public function index(Request $request): Response
    {
        // Empfaenger, Felder und die Einsendungen selbst: nichts davon gehoert in die Hand einer
        // Rolle, die nicht einmal eine Seite veroeffentlichen darf.
        $this->denyAccessUnlessGranted('ROLE_PUBLISHER');
        $theme = $this->theme->load();

        return $this->render('admin/forms.html.twig', [
            'forms' => $this->forms->all(),
            'types' => FormRepository::TYPES,
            'colors' => FormRepository::COLORS,
            // Die Bilder fuer eine Bildauswahl: die Mediathek als Liste, damit je Option gewaehlt statt getippt wird.
            'images' => array_map(static fn (array $item): array => ['id' => $item['id'], 'title' => $item['title'], 'src' => $item['variants'][0]['src'] ?? ''], $this->media->page(1, false, 96)['items']),
            'submissions' => $this->forms->submissions($request->query->getInt('seite', 1)),
            // Die Vorschau zeichnet den Absendeknopf mit dem Standardbutton der Website und
            // kennt die Palette, damit eine Farbe gewaehlt statt getippt wird.
            'schema' => ['colors' => $theme['colors'], 'fonts' => $theme['fonts'], 'buttons' => $theme['buttons'] ?? ButtonDesign::defaults($theme['base']), 'base' => $theme['base']],
        ]);
    }

    #[Route('/%kant.admin_path%/forms/{slug}', name: 'admin_form_save', requirements: ['slug' => '[a-z0-9-]{1,80}|neu'], methods: ['POST'])]
    public function save(Request $request, string $slug): Response
    {
        $this->denyAccessUnlessGranted('ROLE_PUBLISHER');
        if (!$this->isCsrfTokenValid('forms', $request->request->getString('_csrf_token'))) {
            return $this->back('Deine Sitzung ist abgelaufen. Bitte melde dich erneut an.');
        }
        $fields = [];
        foreach ($request->request->all('fields') as $row) {
            if (!is_array($row) || '' === trim((string) ($row['label'] ?? ''))) {
                continue;
            }
            $fields[] = [
                'name' => (string) ($row['name'] ?? ''),
                'type' => (string) ($row['type'] ?? 'text'),
                'label' => (string) $row['label'],
                'required' => '' !== (string) ($row['required'] ?? ''),
                'help' => (string) ($row['help'] ?? ''),
                'options' => array_map(trim(...), explode(',', (string) ($row['options'] ?? ''))),
                'images' => (string) ($row['images'] ?? ''),
                'min' => (string) ($row['min'] ?? ''),
                'max' => (string) ($row['max'] ?? ''),
                'unit' => (string) ($row['unit'] ?? ''),
                // Die Bedingung: technischer Name eines früheren Auswahlfeldes und die Werte, bei
                // denen dieses Feld gilt, als Kommaliste.
                'showIfField' => (string) ($row['showIfField'] ?? ''),
                'showIfValues' => (string) ($row['showIfValues'] ?? ''),
            ];
        }
        try {
            $this->forms->save(
                'neu' === $slug ? $request->request->getString('slug') : $slug,
                $request->request->getString('name'),
                $fields,
                [
                    'recipient' => $request->request->getString('recipient'),
                    'sender' => $request->request->getString('sender'),
                    'subject' => $request->request->getString('subject'),
                    'success' => $request->request->getString('success'),
                    'replyToField' => $request->request->getString('replyToField'),
                    'buttonLabel' => $request->request->getString('buttonLabel'),
                    'summary' => '' !== $request->request->getString('summary'),
                    ...array_map(fn (string $field): string => $request->request->getString($field), array_combine(array_keys(FormRepository::COLORS), array_keys(FormRepository::COLORS))),
                ],
                $request->request->getInt('expectedVersion', -1),
            );
        } catch (InvalidForm|StaleWrite $e) {
            return $this->back($e->getMessage());
        }

        return $this->back('Das Formular wurde gespeichert.', 'success');
    }

    private function back(string $message, string $type = 'error'): Response
    {
        $this->addFlash($type, $message);

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