<?php

namespace App\Form\Extension;

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\Extension\Core\Type\FormType;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\OptionsResolver\OptionsResolver;

class ModalSubmitExtension extends AbstractTypeExtension
{
    public function configureOptions(OptionsResolver $resolver): void
    {
        $resolver->setDefaults([
            'hx_post' => null,
            'hx_get' => null,
            'hx_target' => '#htmx-modal',
            'hx_swap' => 'outerHTML',
            'hx_push_url' => false,
        ]);
    }

    public function buildView(FormView $view, FormInterface $form, array $options): void
    {
        // hx_post keeps the form inside the modal (so validation errors re-render in place);
        // hx_get is for read-only forms such as list filters, which navigate the list instead
        // and therefore usually target the body and push the resulting URL.
        $method = null !== $options['hx_post'] ? 'hx-post' : (null !== $options['hx_get'] ? 'hx-get' : null);

        if (null === $method) {
            return;
        }

        $attr = [
            $method => $options['hx-post' === $method ? 'hx_post' : 'hx_get'],
            'hx-target' => $options['hx_target'],
            'hx-swap' => $options['hx_swap'],
            'hx-indicator' => '#htmx-modal-indicator',
        ];

        if (false !== $options['hx_push_url']) {
            $attr['hx-push-url'] = true === $options['hx_push_url'] ? 'true' : $options['hx_push_url'];
        }

        $view->vars['attr'] = array_merge($view->vars['attr'], $attr);
    }

    public static function getExtendedTypes(): iterable
    {
        return [FormType::class];
    }
}