import Errors from "./constants/errors";
import { START_ENGLISH_DATE } from "./config";
import { AdDateSanitizer } from "./utils/dateSanitizer";
import evaluateNepaliDate from "./utils/evaluateNepaliDate";

function adToBs(adDate: string) {
  adDate = AdDateSanitizer(adDate);
  const startDate = new Date(START_ENGLISH_DATE);
  const today = new Date(adDate);
  const daysDifference = Math.floor(
    (today.getTime() - startDate.getTime()) / 86400000
  );
  if (daysDifference < 0) {
    throw new Error(Errors.AD_DATE_OUT_OF_RANGE);
  }
  return evaluateNepaliDate(daysDifference);
}

export default adToBs;