<?php

declare(strict_types=1);

namespace App\Mcp\Tool\Task;

use App\Mcp\Tool\Serializer;
use App\Repository\TaskRepository;
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-task', description: 'Get full task details including description, all relations, and documents')]
class GetTaskTool
{
    public function __construct(
        private readonly TaskRepository $taskRepository,
        private readonly Security $security,
    ) {}

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

        $task = $this->taskRepository->find($id);

        if (null === $task) {
            throw new InvalidArgumentException(sprintf('Task with ID %d not found.', $id));
        }

        return json_encode([
            'id'          => $task->getId(),
            'number'      => $task->getNumber(),
            'title'       => $task->getTitle(),
            'description' => $task->getDescription(),
            'status'      => Serializer::statusFull($task->getStatus()),
            'priority'    => Serializer::priority($task->getPriority()),
            'effort'      => Serializer::effort($task->getEffort()),
            'assignee'    => Serializer::user($task->getAssignee()),
            'group'       => Serializer::group($task->getGroup()),
            'project'     => Serializer::projectRef($task->getProject()),
            'tags'        => Serializer::tagsWithColor($task->getTags()),
            'documents'   => Serializer::documents($task->getDocuments()),
            'archived'    => $task->isArchived(),
        ]);
    }
}