EmailVirtualType.php

<?php

namespace App\Form;

use App\Entity\Domain;
use App\Entity\EmailVirtual;
use App\Entity\EmailVirtualDestination;
use App\Repository\EmailVirtualRepository;
use App\Service\CurrentDomainService;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Event\PreSubmitEvent;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Validator\Constraints\Callback;
use Symfony\Component\Validator\Constraints\NotBlank;
use Symfony\Component\Validator\Context\ExecutionContextInterface;

/**
 * @package App\Form
 */
class EmailVirtualType extends AbstractType
{

    /**
     * @var EmailVirtualRepository
     */
    private $emailVirtualRepository;

    /**
     * @var CurrentDomainService
     */
    private $currentDomainService;

    public function __construct(EmailVirtualRepository $emailVirtualRepository, CurrentDomainService $currentDomainService)
    {
        $this->emailVirtualRepository = $emailVirtualRepository;
        $this->currentDomainService = $currentDomainService;
    }

    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {

        $emailVirtual = $options['data'];

        /** @var Domain $domain */
        $domain = $this->currentDomainService->getCurrentDomain();

        $builder
            ->add('email', TextType::class, [
                'label' => 'email.forward.form.email',
                'constraints' => [
                    new NotBlank(),
                    new Callback(array($this, 'validateEmail')),
                ],
            ])
            ->add(
                'destinations',
                ChoiceType::class,
                [
                    'label' => 'email.forward.form.destination',
                    'choices' => $this->getChoices($emailVirtual),
                    'mapped' => false,
                    'data' => $this->getData($emailVirtual),
                    'multiple' => true,
                    'required' => true,
                    'constraints' => [
                        new NotBlank(),
                    ],
                ]
            )

        ;

        $builder->addEventListener(
            FormEvents::PRE_SUBMIT,
            function (PreSubmitEvent $event) {
                /** @var EmailVirtual $emailVirtual */
                $emailVirtual = $event->getForm()->getData();
                $emailVirtual->getDestinations()->clear();
                foreach ($event->getData()['destinations'] as $destinationEmail) {
                    $newDestination = (new EmailVirtualDestination())->setEmail($destinationEmail)->setParent($emailVirtual);
                    $emailVirtual->getDestinations()->add($newDestination);
                }
            }
        );

        $builder->get('destinations')->resetViewTransformers();
    }

    public function validateEmail($value, ExecutionContextInterface $context)
    {
        /** @var Domain $domain */
        $domain = $this->currentDomainService->getCurrentDomain();

        $email = $value . '@' . $domain->getDomain();

        $result = true;

        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
            $result = false;
            $message = 'Neplatná emailová adresa.';
        } else {
            /** @var EmailVirtual $data */
            $data = $this->emailVirtualRepository->findOneBy(['email' => $email, 'basket' => 0, 'autoreply' => 0]);
            if ($data) {
                $result = false;
                $message = 'Takáto počiatočná adresa pre presmerovanie už existuje.';
            }
        }

        if (!$result) {
            $context->buildViolation($message)
                ->atPath('email')
                ->addViolation();
        }

    }

    /**
     * {@inheritdoc}
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => 'App\Entity\EmailVirtual',
        ]);
    }

    /**
     * {@inheritdoc}
     */
    public function getBlockPrefix()
    {
        return 'app_email_virtual';
    }

    private function getChoices(EmailVirtual $emailVirtual)
    {
        $choices = [];
        /** @var EmailVirtualDestination $destination */
        foreach ($emailVirtual->getDestinations() as $destination) {
            $choices[$destination->getEmail()] = $destination->getEmail();
        }
        return $choices;
    }

    private function getData(EmailVirtual $emailVirtual)
    {
        $choices = [];
        /** @var EmailVirtualDestination $destination */
        foreach ($emailVirtual->getDestinations() as $destination) {
            $choices[] = $destination->getEmail();
        }
        return $choices;
    }

}