UploadedFileConstraintValidator.php

<?php

declare (strict_types=1);
namespace Drupal\file\Validation\Constraint;

use Drupal\Component\Utility\Environment;
use Drupal\Core\StringTranslation\ByteSizeMarkup;
use Symfony\Component\HttpFoundation\File\UploadedFile;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;

/**
 * Constraint validator for uploaded files.
 *
 * Use FileValidatorInterface for validating file entities.
 *
 * @see \Drupal\Core\Validation\FileValidatorInterface
 */
class UploadedFileConstraintValidator extends ConstraintValidator {
    
    /**
     * {@inheritdoc}
     */
    public function validate(mixed $value, Constraint $constraint) : void {
        if (!$constraint instanceof UploadedFileConstraint) {
            throw new UnexpectedTypeException($constraint, UploadedFileConstraint::class);
        }
        if (!$value instanceof UploadedFile) {
            throw new UnexpectedTypeException($value, UploadedFile::class);
        }
        if ($value->isValid()) {
            return;
        }
        $maxSize = $constraint->maxSize ?? Environment::getUploadMaxSize();
        match ($value->getError()) {    \UPLOAD_ERR_INI_SIZE => $this->context
                ->buildViolation($constraint->uploadIniSizeErrorMessage, [
                '%file' => $value->getClientOriginalName(),
                '%maxsize' => ByteSizeMarkup::create($maxSize),
            ])
                ->setCode((string) \UPLOAD_ERR_INI_SIZE)
                ->addViolation(),
            \UPLOAD_ERR_FORM_SIZE => $this->context
                ->buildViolation($constraint->uploadFormSizeErrorMessage, [
                '%file' => $value->getClientOriginalName(),
                '%maxsize' => ByteSizeMarkup::create($maxSize),
            ])
                ->setCode((string) \UPLOAD_ERR_FORM_SIZE)
                ->addViolation(),
            \UPLOAD_ERR_PARTIAL => $this->context
                ->buildViolation($constraint->uploadPartialErrorMessage, [
                '%file' => $value->getClientOriginalName(),
            ])
                ->setCode((string) \UPLOAD_ERR_PARTIAL)
                ->addViolation(),
            \UPLOAD_ERR_NO_FILE => $this->context
                ->buildViolation($constraint->uploadNoFileErrorMessage, [
                '%file' => $value->getClientOriginalName(),
            ])
                ->setCode((string) \UPLOAD_ERR_NO_FILE)
                ->addViolation(),
            default => $this->context
                ->buildViolation($constraint->uploadErrorMessage, [
                '%file' => $value->getClientOriginalName(),
            ])
                ->setCode((string) $value->getError())
                ->addViolation(),
        
        };
    }

}