@trade-quorum/tq-helpers/src/date-helpers.js

Various common helpers for Trade Quorum API/App

const moment = require('moment');

exports.isOnSameDay = (date1, date2) =>
  date1.getDate() === date2.getDate() &&
  date1.getMonth() === date2.getMonth() &&
  date1.getFullYear() === date2.getFullYear();

exports.isToday = (date) => exports.isOnSameDay(new Date(), date);

exports.duration = (fromDate, toDate) => {
  fromDate = new Date(fromDate);
  if (!toDate) toDate = new Date(Date.now());
  else toDate = new Date(toDate);
  const isOnSameDate =
    toDate.getDate() === fromDate.getDate() &&
    toDate.getMonth() === fromDate.getMonth() &&
    toDate.getFullYear() === fromDate.getFullYear();
  const durationDate = new Date(toDate.getTime() - fromDate.getTime());
  // Format duration
  if (!isOnSameDate) return moment().format(durationDate, 'd[d ago]');
  else if (durationDate.getTime() < 60000)
    return moment().format(durationDate, 's[s ago]');
  else if (durationDate.getTime() < 3600000)
    return moment().format(durationDate, 'm[m ago]');
  else return moment().format(durationDate, 'h[h] m[m ago]');
};

exports.filterDatesWithin = (dates, timeInMilliseconds) => {
  const now = Date.now();
  const filteredDates = [];
  for (const date in dates) {
    if (now - date.getTime() <= timeInMilliseconds) filteredDates.push(date);
  }
  return filteredDates;
};

exports.countDatesWithin = (dates, timeInMilliseconds) =>
  exports.filterDatesWithin(dates, timeInMilliseconds).length;