<?php

/**
 * Chill is a software for social workers
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

declare(strict_types=1);

/**
 * Chill is a software for social workers.
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Chill\PersonBundle\Validator\Constraints\Person;

use DateInterval;
use DateTime;
use LogicException;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use function get_class;
use function gettype;
use function is_object;

class BirthdateValidator extends ConstraintValidator
{
    private $interval_spec;

    public function __construct($interval_spec = null)
    {
        $this->interval_spec = $interval_spec;
    }

    public function validate($value, Constraint $constraint)
    {
        if (null === $value) {
            return;
        }

        if (!$value instanceof DateTime) {
            throw new LogicException('The input should a be a \DateTime interface,'
                    . (is_object($value) ? get_class($value) : gettype($value)));
        }

        $limitDate = $this->getLimitDate();

        if ($limitDate < $value) {
            $this->context->buildViolation($constraint->message)
                ->setParameter('%date%', $limitDate->format('d-m-Y'))
                ->setCode(Birthdate::BIRTHDATE_INVALID_CODE)
                ->addViolation();
        }
    }

    /**
     * @return DateTime
     */
    private function getLimitDate()
    {
        if (null !== $this->interval_spec) {
            $interval = new DateInterval($this->interval_spec);

            return (new DateTime('now'))->sub($interval);
        }

        return new DateTime('now');
    }
}