<?php

declare(strict_types=1);

/**
 * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
 *
 * Copyright (C) 2019 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 General Public License
 * as published by the Free Software Foundation; either version 2
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

namespace App\Validator\Constraints;

use App\Services\Attachments\FileTypeFilterTools;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;
use Symfony\Component\Validator\Exception\UnexpectedValueException;

class ValidFileFilterValidator extends ConstraintValidator
{
    protected $filterTools;

    public function __construct(FileTypeFilterTools $filterTools)
    {
        $this->filterTools = $filterTools;
    }

    /**
     * Checks if the passed value is valid.
     *
     * @param mixed      $value      The value that should be validated
     * @param Constraint $constraint The constraint for the validation
     */
    public function validate($value, Constraint $constraint): void
    {
        if (! $constraint instanceof ValidFileFilter) {
            throw new UnexpectedTypeException($constraint, ValidFileFilter::class);
        }

        if (null === $value || '' === $value) {
            return;
        }

        if (! \is_string($value)) {
            // throw this exception if your validator cannot handle the passed type so that it can be marked as invalid
            throw new UnexpectedValueException($value, 'string');
        }

        if (! $this->filterTools->validateFilterString($value)) {
            $this->context->buildViolation('validator.file_type_filter.invalid')
                ->addViolation();
        }
    }
}
