<?php

declare(strict_types=1);

namespace App\Mcp\Tool\Reference;

use App\Mcp\Tool\Serializer;
use App\Module\Core\Infrastructure\Doctrine\DoctrineUserRepository;
use InvalidArgumentException;
use Mcp\Capability\Attribute\McpTool;
use Symfony\Bundle\SecurityBundle\Security;
use Symfony\Component\Security\Core\Exception\AccessDeniedException;

use function sprintf;

#[McpTool(name: 'get-user', description: 'Get a user by ID with full HR profile (employee flag, hire/end date, contract, work-time ratio, leave entitlement, reference period, family situation).')]
class GetUserTool
{
    public function __construct(
        private readonly DoctrineUserRepository $userRepository,
        private readonly Security $security,
    ) {}

    public function __invoke(int $id): string
    {
        if (!$this->security->isGranted('ROLE_ADMIN')) {
            throw new AccessDeniedException('Access denied: ROLE_ADMIN required.');
        }

        $user = $this->userRepository->find($id);
        if (null === $user) {
            throw new InvalidArgumentException(sprintf('User with ID %d not found.', $id));
        }

        return json_encode(Serializer::userFull($user));
    }
}