Course processing logic

course.processtimes.js

processTimes: function() {
      var startDate      = '';
      var startDisplay   = 'Date to be announced';
      var startDisplayShort = 'TBA';
      var startCountdown = '';
      var startTime      = 4100745600000; // Change this in 2099
      var startDiff      = 99999999;
      var duration       = '';
      var durationWeeks   = 1000;
      var today          = moment(new Date());
      var displayFormat  = '';
      var shortDisplayFormat = 'MMM Do';
      var courseStatus   = 'future';
      var coursePercent  = 0;
      var endDisplayShort   = '';
      var startDateM = null;

      // We can clean this up once our database is cleaner
      if (this.get('duration_string')) {
        var durationStr = this.get('duration_string');
        var durationWeeksNum = parseInt(durationStr.split(' ')[0], 10);
        if (!isNaN(durationWeeksNum) && durationWeeksNum >= 1) {
          duration = durationStr;
          durationWeeks = durationWeeksNum;
        }
      }

      // Either they specify no fields (TBA), 
      // or they specify month and year,
      // or they specify everything
      if (this.get('self_study')) {
        startDisplay = startDisplayShort = 'Self study';
      } else if (this.get('start_year') && this.get('start_month') && !this.get('start_day')) {
        startDateM = moment([this.get('start_year'), (this.get('start_month')-1)]); 
        startDisplay = startDateM.format('MMMM YYYY');
        startDisplayShort = startDateM.format('MMM YY');
      } else if (this.get('start_year') && this.get('start_month') && this.get('start_day')) {
        startDateM = moment([this.get('start_year'), (this.get('start_month')-1), this.get('start_day')]); 
        startDisplay = startDateM.format('MMM Do YYYY');
        startDisplayShort = startDateM.format('MMM Do');
        if (durationWeeks != 1000) {
          var endDateM = moment(startDateM).add('weeks', durationWeeks);
          endDisplayShort = endDateM.format('MMM Do');
        }
      }

      if (startDateM && startDateM.isValid()) {
        startTime = startDateM.valueOf();
        startCountdown = startDateM.fromNow();
        startDiff = startDateM.diff(today, 'days');
        coursePercent = Math.min(Math.abs(Math.ceil((startDiff / (durationWeeks * 7)) * 100)), 100);
        if (startDiff === 0) {
            startCountdown = 'Started today';
            courseStatus   = 'present';
        } else if (startDiff < 0) {
            if (Math.abs(startDiff) < ((durationWeeks + 3) * 7) && !this.get('certificates_ready')) {
                startCountdown = 'Started ' + startCountdown;
                courseStatus   = 'present';
            } else {
                startCountdown = 'Ended ' + startDateM.add('weeks', durationWeeks).fromNow();
                courseStatus   = 'past';
            }
        } else {
            startCountdown = 'Starts ' + startCountdown;
        }
      }

      var timeProperties = {start_percent: coursePercent, start_status: courseStatus,
               start_diff: startDiff, start_countdown: startCountdown,
               start_display_short: startDisplayShort, end_display_short: endDisplayShort,
               start_display: startDisplay, start_time: startTime,
               duration: duration, duration_weeks: durationWeeks};
      return timeProperties;
    }