zettapi_client/lib/services/date.svc.js

Admin panel and client-side CRUD operations in angular to use with zettapi_server rest api to get started quickly in any CMS project.

app.factory('$date', function (moment) {
  var factory = {};

  factory.collisionDetection = function (start, end, events) {
    start = moment(start).format('YYYY-MM-DD');
    end = end ? moment(end).format('YYYY-MM-DD') : 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 = moment(events[i].dateStart).format('YYYY-MM-DD');
      var eventEnd = eventStart;
      if (events[i].dateEnd) {
        eventEnd = moment(events[i].dateEnd).format('YYYY-MM-DD');
      }

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

    return false;
  };

  factory.extractMinutes = function (time) {
    try {
      return factory.pad(time.getHours()) + ':' + factory.pad(time.getMinutes());
    }
    catch (err) {
      time = new Date(time);
      return factory.pad(time.getHours()) + ':' + factory.pad(time.getMinutes());
    }
  };

  factory.calculateTimespan = function (startTimestamp, endTimestamp) {
    var end;
    if (endTimestamp) {
      end = moment(endTimestamp);
    }
    else {
      end = moment();
    }

    var start = new Date(startTimestamp);

    var duration = moment.duration(end.diff(start));
    return duration.asMinutes().toFixed(2);
  };

  factory.totalMinutes = function (timeString) {
    var HourMinutes = timeString.split(':');
    if (HourMinutes.length == 1) {
      HourMinutes.push(0);
    }

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

    return hours * 60 + minutes;
  };

  factory.pad = function (number, count) {
    var res = number + "";
    count = count || 2;
    while (res.length < count) {
      res = "0" + res;
    }
    return res;
  };

  factory.getTotalMinutes = function (time) {
    var HourMinutes = time.split(':');
    if (HourMinutes.length === 0 || HourMinutes.length > 2) {
      return null;
    }
    if (HourMinutes.length == 1) {
      HourMinutes.push(0);
    }

    var hours = parseInt(HourMinutes[0]);
    if (hours < 0 || hours > 23) {
      return null;
    }
    var minutes = parseInt(HourMinutes[1]);
    if (minutes < 0 || minutes > 59) {
      return null;
    }

    return hours * 60 + minutes;
  };

  factory.getWeekNumber = function (d) {
    // Copy date so don't modify original
    d = new Date(+d);
    d.setHours(0, 0, 0);
    // Set to nearest Thursday: current date + 4 - current day number
    // Make Sunday's day number 7
    d.setDate(d.getDate() + 4 - (d.getDay() || 7));
    // Get first day of year
    var yearStart = new Date(d.getFullYear(), 0, 1);
    // Calculate full weeks to nearest Thursday
    var weekNo = Math.ceil((((d - yearStart) / 86400000) + 1) / 7);
    // Return array of year and week number
    return [d.getFullYear(), weekNo];
  };

  factory.weeksInYear = function (year) {
    var month = 11, day = 31, week;

    // Find week that 31 Dec is in. If is first week, reduce date until
    // get previous week.
    do {
      d = new Date(year, month, day--);
      week = factory.getWeekNumber(d)[1];
    } while (week == 1);

    return week;
  };

  factory.getDateOfISOWeek = function (w, y) {
    var simple = new Date(y, 0, 1 + (w - 1) * 7);
    var dow = simple.getDay();
    var ISOweekStart = simple;
    if (dow <= 4)
      ISOweekStart.setDate(simple.getDate() - simple.getDay() + 1);
    else
      ISOweekStart.setDate(simple.getDate() + 8 - simple.getDay());
    return ISOweekStart;
  };

  return factory;
});