<?php

namespace App\Form;

use App\Entity\Goal;
use App\Entity\Mainstay;
use App\Repository\GoalRepository;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class MainstaySelType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('mainstay', EntityType::class, [
                'label' => 'basics.mainstay',
                'class' => Mainstay::class,
                'placeholder' => 'basics.mainstay.placeholder',
                'attr' => [
                    'onchange' => 'this.form.submit()'
                ],
                'mapped' => false,
                'required' => false,
            ])
        ;

        $builder->get('mainstay')->addEventListener(
            FormEvents::POST_SUBMIT,
            function (FormEvent $event) use($options) {
                $form = $event->getForm();
                $this->addGoalField($form->getParent(), $form->getData(), $options);
            }
        );

        $builder->addEventListener(
            FormEvents::POST_SET_DATA,
            function (FormEvent $event) use($options) {
                $form = $event->getForm();
                
                $this->addGoalField($form, null, $options);
            }
        );
    }

    private function addGoalField(FormInterface $form, ?Mainstay $mainstay, array $options)
    {
        $form->add('goal', EntityType::class, [
            'label' => 'basics.goal',
            'class' => Goal::class,
            'query_builder' => function(GoalRepository $items) {
                return $items ->createQueryBuilder('g')
                              ->where('g.agenda = :agenda')
                              ->setParameter('agenda', 2030)
                              ->orderBy('g.code', 'ASC');
            },
            'placeholder' => 'basics.goal.placeholder',
            'attr' => [
                'onchange' => 'this.form.submit()'
            ],
            'mapped' => false,
            'required' => false,
            'choices' => $mainstay ? $mainstay->getGoals() : []
        ]);
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
        ));
    }
}