StringDenormalizer.php

<?php

declare(strict_types=1);

namespace Flaksp\UserInputProcessor\Denormalizer;

use Flaksp\UserInputProcessor\ConstraintViolation\ConstraintViolationCollection;
use Flaksp\UserInputProcessor\ConstraintViolation\StringIsTooLong;
use Flaksp\UserInputProcessor\ConstraintViolation\StringIsTooShort;
use Flaksp\UserInputProcessor\ConstraintViolation\ValueDoesNotMatchRegex;
use Flaksp\UserInputProcessor\ConstraintViolation\WrongPropertyType;
use Flaksp\UserInputProcessor\Exception\ValidationError;
use Flaksp\UserInputProcessor\Pointer;
use LogicException;

final class StringDenormalizer
{
    /**
     * @throws ValidationError If $data has invalid parameters
     */
    public function denormalize(
        mixed $data,
        Pointer $pointer,
        int $minLength = null,
        int $maxLength = null,
        string $pattern = null,
    ): string {
        if (null !== $minLength && null !== $maxLength && $minLength > $maxLength) {
            throw new LogicException('Min length constraint can not be bigger than max length');
        }

        $violations = new ConstraintViolationCollection();

        if (!\is_string($data)) {
            $violations[] = WrongPropertyType::guessGivenType(
                $pointer,
                $data,
                [WrongPropertyType::JSON_TYPE_STRING]
            );

            throw new ValidationError($violations);
        }

        if (null !== $minLength && mb_strlen($data) < $minLength) {
            $violations[] = new StringIsTooShort(
                $pointer,
                $minLength
            );
        }

        if (null !== $maxLength && mb_strlen($data) > $maxLength) {
            $violations[] = new StringIsTooLong(
                $pointer,
                $maxLength
            );
        }

        if (null !== $pattern && 1 !== preg_match($pattern, $data)) {
            $violations[] = new ValueDoesNotMatchRegex(
                $pointer,
                $pattern
            );
        }

        if ($violations->isNotEmpty()) {
            throw new ValidationError($violations);
        }

        return $data;
    }
}