tariffs/src/handlers/tariff/helpers.ts

import { validateEmptyFields } from "@/utils/validate-empty-fields";

import type { TariffMessage } from "@/types/messages/tariff-message.type";
import type { ObjectWithRequiredFields } from "@/types/object-with-required-fields";

export const validateTariff = (tariff?: TariffMessage): [ObjectWithRequiredFields<TariffMessage>, Error | null] => {
  const [validatedTariff, errorEmpty] = validateEmptyFields(tariff ?? {}, ["isCustom", "name", "privileges"], false);

  if (errorEmpty) {
    return [validatedTariff, errorEmpty];
  }

  if (validatedTariff.price && isNaN(Number(validatedTariff.price))) {
    return [validatedTariff, new Error("invalid 'price' value")];
  }

  return [validatedTariff, null];
};