timeFormat filter to accept seconds and format 00:00:00

timeFormat.js

'use strict';

/**
 * @ngdoc filter
 * @name musiLandingApp.filter:timeFormat
 * @function
 * @description
 * # timeFormat
 * Filter in the musiLandingApp.
 */
angular.module('myAppFilters')
    .filter('timeFormat', ['$log', function ($log) {
    	// taken from https://gist.github.com/monkeycycle/1398263
      return function (secs, format) {
      	var chai = window.chai,
      		expect = chai.expect;

  		var magnitude = '+';

      	try {

      		expect(secs, 'Seconds').to.not.be.undefined;
      		expect(secs, 'Seconds').to.not.equal(0);

      		secs = parseInt(secs);

  	    	if (secs < 0) {
  	    		magnitude = '-';
  	    		secs = secs * -1;
  	    	}

  			var hr  = Math.floor(secs / 3600);
  			var min = Math.floor((secs - (hr * 3600))/60);
  			var sec = Math.floor(secs - (hr * 3600) -  (min * 60));
  	 
  			if (hr < 10)   { hr    = "0" + hr; }
  			if (min < 10) { min = "0" + min; }
  			if (sec < 10)  { sec  = "0" + sec; }
  			if (hr)            { hr   = "00"; }
  	 
  			if (format != null) {
  				var formatted_time = format.replace('hh', hr);
  				formatted_time = formatted_time.replace('h', hr*1+""); // check for single hour formatting
  				formatted_time = formatted_time.replace('mm', min);
  				formatted_time = formatted_time.replace('m', min*1+""); // check for single minute formatting
  				formatted_time = formatted_time.replace('ss', sec);
  				formatted_time = formatted_time.replace('s', sec*1+""); // check for single second formatting
  				return formatted_time;
  			} else {
  				return magnitude+hr + ':' + min + ':' + sec;
  			}
  		} catch (err) {
  			// $log.debug('- time filter fallback', err);
      		return magnitude+'00:00:00';
      	}
  	}
    }]);