<?php

namespace App\Action\Comment;

use App\Service\EntityServiceInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Zend\Diactoros\Response\JsonResponse;

class GetAction
{

    /**
     * @var EntityServiceInterface
     */
    private $entityService;

    public function __construct(EntityServiceInterface $entityService)
    {
        $this->entityService = $entityService;
    }

    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next = null)
    {
        $id     = $request->getAttribute('id');
        $entity = $this->entityService->get($id);

        if (null === $entity) {
            $ret = new JsonResponse(false);
            return $ret->withStatus(404);
        }

        return new JsonResponse($entity);
    }
}