<?php

namespace App\Form;

use App\Entity\Goal;
use App\Entity\Target;
use App\Entity\Indicator;
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;
use App\Repository\GoalRepository;

class IndicatorSelType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->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,
            ])
        ;

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

        $builder->addEventListener(
            FormEvents::POST_SET_DATA,
            function (FormEvent $event) use($options) {
                /*$form = $event->getForm();
                $data = $event->getData();

                $action = $data->getAction();
                if ($action) {
                    $programm = $action->getProgramm();
                    $ministry = $programm->getMinistry();
                    
                    $this->addProgrammField($form, $ministry, $options);
                    $this->addActionField($form, $programm, $options);

                    $form->get('ministry')->setData($ministry);
                    $form->get('programm')->setData($programm);
                } else {
                    $this->addProgrammField($form, null, $options);
                    $this->addActionField($form, null, $options);
                }*/
                $form = $event->getForm();
                
                $this->addTargetField($form, null, $options);
                $this->addIndicatorField($form, null, $options);
            }
        );
    }

    private function addTargetField(FormInterface $form, ?Goal $goal, array $options)
    {
        $builder = $form->getConfig()->getFormFactory()->createNamedBuilder(
            'target',
            EntityType::class,
            null,
            [
                'label' => 'basics.target',
                'class' => Target::class,
                'placeholder' => 'basics.target.placeholder',
                'attr' => [
                    'onchange' => 'this.form.submit()'
                ],
                'mapped' => false,
                'required' => false,
                'auto_initialize' => false,
                'choices' => $goal ? $goal->getTargets() : []
            ]
        );

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

        $form->add($builder->getForm());
    }

    private function addIndicatorField(FormInterface $form, ?Target $target, array $options)
    {
        $form->add('indicator', EntityType::class, [
            'label' => 'basics.indicator',
            'class'       => Indicator::class,
            'placeholder' => 'basics.indicator.placeholder',
            'attr' => [
                'onchange' => 'this.form.submit()'
            ],
            'mapped' => false,
            'required' => false,
            'choices' => $target ? $target->getIndicators() : []
        ]);
    }

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