<?php

/*
 * This source file is available under two different licenses:
 *   - GNU General Public License version 3 (GPLv3)
 *   - DACHCOM Commercial License (DCL)
 * Full copyright and license information is available in
 * LICENSE.md which is distributed with this source code.
 *
 * @copyright  Copyright (c) DACHCOM.DIGITAL AG (https://www.dachcom-digital.com)
 * @license    GPLv3 and DCL
 */

namespace FormBuilderBundle\Form\Admin\Type\OutputWorkflow\Channel\Object;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\CollectionType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\OptionsResolver\OptionsResolver;

class ObjectMappingElementCollectionType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options): void
    {
        $builder->add('type', TextType::class);
        $builder->add('fieldType', TextType::class);

        $builder->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) {
            $data = $event->getData();
            $form = $event->getForm();

            if (!is_array($data)) {
                return;
            }

            // remove all form fields that don't contain any child data
            // therefor we need to re-index the collection storage
            foreach ($data as $index => $collectionData) {
                if ($collectionData['type'] !== 'form_field') {
                    continue;
                }

                if (isset($collectionData['childs']) && is_array($collectionData['childs']) && count($collectionData['childs']) === 0) {
                    unset($data[$index]);
                }
            }

            $newSortedData = array_values($data);

            $event->setData($newSortedData);
            $form->setData($newSortedData);
        });
    }

    public function configureOptions(OptionsResolver $resolver): void
    {
        parent::configureOptions($resolver);

        $resolver->setDefaults([
            'label'           => false,
            'auto_initialize' => false,
            'allow_add'       => true,
            'allow_delete'    => true,
            'by_reference'    => false,
            'entry_type'      => ObjectMappingElementConfigType::class
        ]);
    }

    public function getParent(): string
    {
        return CollectionType::class;
    }
}
