apphouse/dist/utils/time/getYMDFromDays.ts

Component library for React that uses observable state management and theme-able components.

const MAX_DAYS = 30;
const TOTAL_DAYS_IN_YEAR = 360;

/**
 * Get days, months, years
 * @param value time usually created by getTime()
 * @returns
 */
export const getYMDFromDays = (value?: number) => {
  if (!value) {
    return {
      days: 0,
      months: 0,
      years: 0
    };
  }
  const years = Math.floor(value / TOTAL_DAYS_IN_YEAR);
  const remainingMonths = value % TOTAL_DAYS_IN_YEAR;
  let months = 0;
  let days = 0;
  if (years > 0) {
    if (remainingMonths > 0) {
      months = Math.floor(remainingMonths / MAX_DAYS);
      days = remainingMonths % MAX_DAYS;
    }
  } else if (remainingMonths / MAX_DAYS > 0) {
    months = Math.floor(remainingMonths / MAX_DAYS);
    days = Math.floor(remainingMonths % MAX_DAYS);
  } else {
    days = value;
  }

  return {
    days,
    months,
    years
  };
};