export function parseRelativeParts()

in packages/eui/src/components/date_picker/super_date_picker/relative_utils.ts [28:66]

• 34 lines of code
• 15 McCabe index (conditional complexity)

export function parseRelativeParts(value: string): RelativeParts {
  const matches =
    isString(value) &&
    value.match(/now(([\-\+])([0-9]+)([smhdwMy])(\/[smhdwMy])?)?/);

  const operator = matches && matches[2];
  const count = matches && matches[3];
  const unit = matches && matches[4];
  const roundBy = matches && matches[5];

  if (count && unit) {
    const isRounded = roundBy ? true : false;
    const roundUnit =
      isRounded && roundBy
        ? (roundBy.replace(ROUND_DELIMETER, '') as TimeUnitId)
        : undefined;
    return {
      count: parseInt(count, 10),
      unit: operator === '+' ? `${unit}+` : unit,
      round: isRounded,
      ...(roundUnit ? { roundUnit } : {}),
    };
  }

  const results = { count: 0, unit: 's', round: false };
  const duration = moment.duration(moment().diff(dateMath.parse(value)));
  let unitOp = '';
  for (let i = 0; i < relativeUnitsFromLargestToSmallest.length; i++) {
    const asRelative = duration.as(relativeUnitsFromLargestToSmallest[i]);
    if (asRelative < 0) unitOp = '+';
    if (Math.abs(asRelative) > 1) {
      results.count = Math.round(Math.abs(asRelative));
      results.unit = relativeUnitsFromLargestToSmallest[i] + unitOp;
      results.round = false;
      break;
    }
  }
  return results;
}