<?php

/*
 * This file is part of the Sylius package.
 *
 * (c) Paweł Jędrzejewski
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Sylius\Bundle\AddressingBundle\Form\Type;

use Sylius\Bundle\ResourceBundle\Form\EventSubscriber\AddCodeFormSubscriber;
use Sylius\Bundle\ResourceBundle\Form\Type\AbstractResourceType;
use Sylius\Component\Addressing\Model\ZoneInterface;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
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;

final class ZoneType extends AbstractResourceType
{
    /** @var array */
    private $scopeChoices;

    /**
     * @param string[] $validationGroups
     * @param string[] $scopeChoices
     */
    public function __construct(string $dataClass, array $validationGroups, array $scopeChoices = [])
    {
        parent::__construct($dataClass, $validationGroups);

        $this->scopeChoices = $scopeChoices;
    }

    public function buildForm(FormBuilderInterface $builder, array $options): void
    {
        $builder
            ->addEventSubscriber(new AddCodeFormSubscriber())
            ->add('name', TextType::class, [
                'label' => 'sylius.form.zone.name',
            ])
            ->add('type', ZoneTypeChoiceType::class, [
                'disabled' => true,
            ])
        ;

        if (!empty($this->scopeChoices)) {
            $builder
                ->add('scope', ChoiceType::class, [
                    'choices' => array_flip($this->scopeChoices),
                    'label' => 'sylius.form.zone.scope',
                    'placeholder' => 'sylius.form.zone.select_scope',
                    'required' => false,
                ])
            ;
        }

        $builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event): void {
            /** @var ZoneInterface $zone */
            $zone = $event->getData();

            $entryOptions = [
                'entry_type' => $this->getZoneMemberEntryType($zone->getType()),
                'entry_options' => $this->getZoneMemberEntryOptions($zone->getType()),
            ];

            if ($zone->getType() === ZoneInterface::TYPE_ZONE) {
                $entryOptions['entry_options']['choice_filter'] = function (ZoneInterface $subZone) use ($zone): bool {
                    return $zone->getId() !== $subZone->getId();
                };
            }

            $event->getForm()->add('members', CollectionType::class, [
                'entry_type' => ZoneMemberType::class,
                'entry_options' => $entryOptions,
                'button_add_label' => 'sylius.form.zone.add_member',
                'allow_add' => true,
                'allow_delete' => true,
                'by_reference' => false,
                'delete_empty' => true,
            ]);
        });
    }

    public function getBlockPrefix(): string
    {
        return 'sylius_zone';
    }

    private function getZoneMemberEntryType(string $zoneMemberType): string
    {
        $zoneMemberEntryTypes = [
            ZoneInterface::TYPE_COUNTRY => CountryCodeChoiceType::class,
            ZoneInterface::TYPE_PROVINCE => ProvinceCodeChoiceType::class,
            ZoneInterface::TYPE_ZONE => ZoneCodeChoiceType::class,
        ];

        return $zoneMemberEntryTypes[$zoneMemberType];
    }

    private function getZoneMemberEntryOptions(string $zoneMemberType): array
    {
        $zoneMemberEntryOptions = [
            ZoneInterface::TYPE_COUNTRY => ['label' => 'sylius.form.zone.types.country'],
            ZoneInterface::TYPE_PROVINCE => ['label' => 'sylius.form.zone.types.province'],
            ZoneInterface::TYPE_ZONE => ['label' => 'sylius.form.zone.types.zone'],
        ];

        return $zoneMemberEntryOptions[$zoneMemberType];
    }
}
