<?php
/**
 * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
 *
 * Copyright (C) 2019 - 2020 Jan Böhmer (https://github.com/jbtronics)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

namespace App\Form\Type;

use Brick\Math\BigDecimal;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\DataTransformerInterface;
use Symfony\Component\Form\Extension\Core\Type\NumberType;
use Symfony\Component\Form\FormBuilderInterface;

class BigDecimalNumberType extends AbstractType implements DataTransformerInterface
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->addModelTransformer($this);
    }

    public function getParent()
    {
        return NumberType::class;
    }

    public function transform($value)
    {
        if (null === $value) {
            return null;
        }

        if ($value instanceof BigDecimal) {
            return (string) $value;
        }

        return $value;
    }

    public function reverseTransform($value)
    {
        if (null === $value) {
            return null;
        }

        return BigDecimal::of($value);
    }
}
