<?php

namespace App\Controller;

use App\Entity\Company;
use App\Security\TenantContext;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\Routing\Attribute\Route;
use Symfony\Component\Security\Http\Attribute\IsGranted;
use Symfony\Component\Uid\Uuid;

/**
 * Branding (Logo/Farben) einer Firma setzen. Erlaubt Firmen-Admins die
 * Pflege ihres eigenen Brandings, ohne die Firma selbst ändern zu können.
 */
#[IsGranted('ROLE_COMPANY_ADMIN')]
final class CompanyBrandingController
{
    public function __construct(
        private readonly EntityManagerInterface $em,
        private readonly TenantContext $tenant,
    ) {
    }

    #[Route('/api/companies/{id}/branding', name: 'company_branding', methods: ['PATCH'])]
    public function __invoke(string $id, Request $request): JsonResponse
    {
        $company = $this->em->getRepository(Company::class)->find(Uuid::fromString($id));
        if (!$company instanceof Company) {
            throw new NotFoundHttpException('Firma nicht gefunden.');
        }
        $this->assertAccess($company);

        $data = json_decode($request->getContent(), true) ?? [];
        $company->setBrandingConfig($this->sanitize($data));
        $this->em->flush();

        return new JsonResponse($company->getBrandingConfig());
    }

    private function assertAccess(Company $company): void
    {
        if ($this->tenant->isPlatformAdmin()) {
            return;
        }
        $reseller = $this->tenant->getReseller();
        if (null === $reseller || $company->getReseller()?->getId()->equals($reseller->getId()) !== true) {
            throw new AccessDeniedHttpException('Firma gehört nicht zum eigenen Mandanten.');
        }
        $own = $this->tenant->getCompany();
        if (null !== $own && !$company->getId()->equals($own->getId())) {
            throw new AccessDeniedHttpException('Nur die eigene Firma darf bearbeitet werden.');
        }
    }

    /** Nur erlaubte, validierte Felder übernehmen (verhindert CSS-Injection). */
    private function sanitize(array $data): array
    {
        $out = [];
        foreach (['primaryColor', 'primaryDark'] as $key) {
            $val = (string) ($data[$key] ?? '');
            if (preg_match('/^#[0-9a-fA-F]{6}$/', $val)) {
                $out[$key] = $val;
            }
        }
        $logo = (string) ($data['logoUrl'] ?? '');
        if (str_starts_with($logo, 'https://') || str_starts_with($logo, '/')) {
            $out['logoUrl'] = $logo;
        }

        return $out;
    }
}