hexabot/api/src/chat/validation-rules/is-valid-message-text.ts

/*
 * Copyright © 2024 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 { registerDecorator, ValidationOptions } from 'class-validator';

import {
  StdIncomingMessage,
  StdOutgoingTextMessage,
} from '../schemas/types/message';

export function IsValidMessageText(validationOptions?: ValidationOptions) {
  return function (object: object, propertyName: string) {
    registerDecorator({
      target: object.constructor,
      propertyName,
      options: validationOptions,
      validator: {
        validate(message: StdOutgoingTextMessage | StdIncomingMessage) {
          return !!(message as StdOutgoingTextMessage).text;
        },
      },
    });
  };
}