<?php
/*
 * This file is part of the Sonata package.
 *
 * (c) Thomas Rabaix <thomas.rabaix@sonata-project.org>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 */

namespace Sonata\AdminBundle\Form\Type;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;

use Symfony\Component\OptionsResolver\OptionsResolverInterface;

use Sonata\AdminBundle\Form\DataTransformer\ArrayToModelTransformer;

class AdminType extends AbstractType
{
    /**
     * {@inheritDoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $admin = $this->getAdmin($options);

        if ($options['delete'] && $admin->isGranted('DELETE') ) {
            $builder->add('_delete', 'checkbox', array('required' => false, 'mapped' => false));
        }

        if (!$admin->hasSubject()) {
            $admin->setSubject($builder->getData());
        }

        $admin->defineFormBuilder($builder);

        $builder->addModelTransformer(new ArrayToModelTransformer($admin->getModelManager(), $admin->getClass()));
    }

    /**
     * {@inheritDoc}
     */
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'delete' => true,
            'auto_initialize' => false
        ));
    }

    /**
     * @param array $options
     *
     * @return \Sonata\AdminBundle\Admin\FieldDescriptionInterface
     *
     * @throws \RuntimeException
     */
    protected function getFieldDescription(array $options)
    {
        if (!isset($options['sonata_field_description'])) {
            throw new \RuntimeException('Please provide a valid `sonata_field_description` option');
        }

        return $options['sonata_field_description'];
    }

    /**
     * @param array $options
     *
     * @return \Sonata\AdminBundle\Admin\AdminInterface
     */
    protected function getAdmin(array $options)
    {
        return $this->getFieldDescription($options)->getAssociationAdmin();
    }

    /**
     * {@inheritDoc}
     */
    public function getName()
    {
        return 'sonata_type_admin';
    }
}