<?php

namespace App\Service;

use App\Entity\User;
use Doctrine\ORM\EntityManager;
use Doctrine\ORM\EntityRepository;
use DoctrineExpressiveModule\Hydrator\DoctrineObject;
use Zend\Crypt\Password\Bcrypt;

class UserService
{
    /**
     * @var EntityManager
     */
    private $em;

    /**
     * @var DoctrineObject
     */
    private $hydrator;

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

    /**
     * Return FacilityLocations in a tree form
     *
     * @return array
     */
    public function getList()
    {
        /** @var EntityRepository $treeRepository */
        $repository = $this->em->getRepository(User::class);
        return $repository->findAll();
    }

    /**
     * @param int $id
     * @return User
     * @throws \Doctrine\ORM\ORMException
     * @throws \Doctrine\ORM\OptimisticLockException
     * @throws \Doctrine\ORM\TransactionRequiredException
     */
    public function get(int $id): User
    {
        /** @var User $user */
        $user = $this->em->find(User::class, $id);
        return $user;
    }

    /**
     * @param int $id
     * @param $data
     * @return User
     * @throws \Doctrine\ORM\ORMException
     * @throws \Doctrine\ORM\OptimisticLockException
     * @throws \Doctrine\ORM\TransactionRequiredException
     */
    public function update(int $id, $data): User
    {
        /** @var User $user */
        $user = $this->hydrator->hydrate($data, $this->get($id));
        $this->em->persist($user);
        $this->em->flush();
        return $user;
    }

    /**
     * @param int $id
     * @param string $old
     * @param string $new
     * @return User
     * @throws \Exception
     */
    public function changePassword(int $id, string $old, string $new): User
    {
        $user = $this->get($id);

        $crypt = new Bcrypt();
        $crypt->setCost(AuthService::PASSWORD_COST);

        if (!$crypt->verify($old, $user->getPassword())) {
            throw new \Exception("Old password doesn't match", 401);
        }

        $user->setPassword($crypt->create($new));
        $this->em->flush();
        return $user;
    }

    /**
     * @param string $role
     * @return User[]|null
     */
    public function getAllUsersOfRole(string $role): ?array
    {
        $activeUsers = $this->em->getRepository(User::class)->findBy([
            'active' => true,
        ]);
        return array_filter($activeUsers, function (User $user) use ($role) {
            return in_array($role, $user->getRoles());
        });
    }
}