alphascript-server/lib/util/date.js

CRUD operations for mongo and other functionalities to get started quickly in any CMS project

var moment = require('moment');

module.exports = {
  extract: extract,
  pad: pad,
  collisionDetection: collisionDetection,
  getMinutes: getMinutes
};

function pad(num, size) {
  var s = num + "";
  while (s.length < size) s = "0" + s;
  return s;
}

function extract(date) {
  try {
    return moment(date).format('YYYY-MM-DD');
  } catch (err) {
    return extract(new Date(date));
  }
}

function collisionDetection(start, end, events) {
  start = extract(start);
  end = end ? extract(end) : start;

  if (end < start) return null;

  for (var i = 0; i < events.length; i++) {
    if (events[i].approval) {
        if (events[i].approval.cancelled) continue;
        if (events[i].approval.level < events[i].approval.maxLevel) continue;
    }

    var eventStart = extract(events[i].dateStart);
    var eventEnd = eventStart;
    if (events[i].dateEnd) eventEnd = extract(events[i].dateEnd);

    // $    |__$__|
    if (eventEnd > start && eventEnd <= end) return true;
    // |__$__|    $
    if (eventStart >= start && eventStart < end) return true;
    // $   |____|    $
    if (eventStart <= start && eventEnd >= end) return true;
    // |___$___$____|
    if (eventStart >= start && eventEnd <= end) return true;
  }

  return false;
}

function getMinutes(time) {
  var HourMinutes = time.split(':');
  if (HourMinutes.length == 1) HourMinutes.push(0);

  var hours = parseInt(HourMinutes[0]);
  var minutes = parseInt(HourMinutes[1]);

  return hours * 60 + minutes;
}