semantic-ui-calendar-react/src/pickers/timePicker/sharedFunctions.js

date/time picker built from semantic-ui elements

export function buildTimeStringWithSuffix(
  hour/*string*/,
  minute/*string*/,
  timeFormat/*string*/) {
  if (timeFormat === 'ampm') {
    if (parseInt(hour) < 12) {
      return `${convertHourTo_12_Format(hour)}:${minute} am`;
    }
    return `${convertHourTo_12_Format(hour)}:${minute} pm`;
  }
  if (timeFormat === 'AMPM') {
    if (parseInt(hour) < 12) {
      return `${convertHourTo_12_Format(hour)}:${minute} AM`;
    }
    return `${convertHourTo_12_Format(hour)}:${minute} PM`;
  }
  return `${hour}:${minute}`;
}

function convertHourTo_12_Format(hour/*string*/) {
  if (hour === '00' || hour === '12') {
    return '12';
  }
  if (parseInt(hour) < 12) {
    return hour;
  }
  const h = (parseInt(hour) - 12).toString();
  if (h.length === 1) {
    return '0' + h;
  }
  return h;
}

export function isNextPageAvailable(date/*Moment*/, maxDate/*Moment*/) {
  if (maxDate) {
    return maxDate.isAfter(date, 'day');
  }
  return true;
}

export function isPrevPageAvailable(date/*Moment*/, minDate/*Moment*/) {
  if (minDate) {
    return minDate.isBefore(date, 'day');
  }
  return true;
}

export function getCurrentDate(date/*Moment*/) {
  return date.format('MMMM DD, YYYY');
}