<?php

namespace App\Action;

use App\Entity\User;
use Doctrine\ORM\EntityManager;
use Doctrine\ORM\Query;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Zend\Diactoros\Response\JsonResponse;

class HomePageAction
{

    /**
     * @var EntityManager 
     */
    private $em;

    public function __construct(EntityManager $em)
    {
        $this->em = $em;
    }

    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next = null)
    {
        $qb   = $this->em->createQueryBuilder();
        $user = $qb->select('u, a, ac, uc')
            ->from(User::class, 'u')
            ->leftJoin('u.comments', 'uc')
            ->leftJoin('u.articles', 'a')
            ->leftJoin('a.comments', 'ac')
            ->where('u.id = :uid')
            ->setParameter('uid', 1)
            ->getQuery()
            ->getSingleResult(Query::HYDRATE_ARRAY);

        return new JsonResponse([
            'welcome' => 'Congratulations! You have reached our API endpoint.',
            'user'    => $user,
        ]);
    }
}