/*
 * Copyright © 2025 Hexastack. All rights reserved.
 *
 * Licensed under the GNU Affero General Public License v3.0 (AGPLv3) with the following additional terms:
 * 1. The name "Hexabot" is a trademark of Hexastack. You may not use this name in derivative works without express written permission.
 * 2. All derivative works must include clear attribution to the original creator and software, Hexastack and Hexabot, in a prominent location (e.g., in the software's "About" section, documentation, and README file).
 */

import {
  ValidationArguments,
  ValidatorConstraint,
  ValidatorConstraintInterface,
} from 'class-validator';

import { ContentField } from '../dto/contentType.dto';
import { validateUniqueFields } from '../utilities/field-validation.utils';

@ValidatorConstraint({ async: false })
export class UniqueFieldNamesConstraint
  implements ValidatorConstraintInterface
{
  validate(fields: ContentField[], _args: ValidationArguments) {
    return validateUniqueFields(fields, 'label');
  }

  defaultMessage(args: ValidationArguments) {
    return `${args.property} contains duplicate "label" values; each field.name must be unique`;
  }
}