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var ClientDateTimeUtils = Class.create();
ClientDateTimeUtils.prototype = Object.extendsObject(AbstractAjaxProcessor, {
	
	//Takes a Single Date/Time Field and returns its time difference from nowDateTime().
	//params = sysparm_fdt (the first date/time field), sysparm_difftype (time based format to return result. See "_calcDateDiff" function comments)
	getNowDateTimeDiff: function(){
		var firstDT = this.getParameter('sysparm_fdt'); //First Date-Time Field
		var diffTYPE = this.getParameter('sysparm_difftype'); // Date-Time Type to return the answer as. Can be second, minute, hour, day
		var diff = gs.dateDiff(gs.nowDateTime(), firstDT, true);
		var timediff = this._calcDateDiff(diffTYPE, diff);
		//return "getNowDateTimeDiff: FIRST DT: " + firstDT + " -DIFFTYPE: " + diffTYPE + " -TIME DIFF: " + timediff;
		return timediff;
	},
	
	//Diff the amount of time between two different Date/Time fields
	//params = sysparm_fdt (the first date/time field), sysparm_sdt (second date/time field), sysparm_difftype (time based format to return result. See "_calcDateDiff" function comments)
	getDateTimeDiff: function(){
		var firstDT = this.getParameter('sysparm_fdt'); //First Date-Time Field
		var secondDT = this.getParameter('sysparm_sdt'); // Second Date-Time Field
		var diffTYPE = this.getParameter('sysparm_difftype'); // Date-Time Type to return the answer as. Can be second, minute, hour, day
		var diff = gs.dateDiff(firstDT, secondDT, true);
		var timediff = this._calcDateDiff(diffTYPE, diff);
		//return "getDateTimeDiff: FIRST DT: " + firstDT + " -SECOND DT: " + secondDT + " -DIFFTYPE: " + diffTYPE + " -TIME DIFF: " + timediff;
		return timediff;
	},
	
	//Takes your date/time field and returns the amount of time before now. A positive is time before now, a negative number is after now.
	//params = sysparm_fdt (the first date/time field), sysparm_difftype (time based format to return result. See "_calcDateDiff" function comments)
	getDateTimeBeforeNow: function(){
		var firstDT = this.getParameter('sysparm_fdt'); //First Date-Time Field
		var diffTYPE = this.getParameter('sysparm_difftype'); // Date-Time Type to return the answer as. Can be second, minute, hour, day
		var diff = gs.dateDiff(firstDT, gs.nowDateTime(), true);
		var timediff = this._calcDateDiff(diffTYPE, diff);
		//return "getDateTimeBeforeNow: FIRST DT: " + firstDT + " -DIFFTYPE: " + diffTYPE + " -TIME DIFF: " + timediff;
		return timediff;
	},
	
	//Returns true if it is before now, and false if it is after now.
	//params = sysparm_fdt (the first date/time field)
	getDateTimeBeforeNowBool: function(){
		var firstDT = this.getParameter('sysparm_fdt'); //First Date-Time Field
		var diff = gs.dateDiff(firstDT, gs.nowDateTime(), true);
		var answer = '';
		if (diff >= 0){answer = 'true';}
			else {answer = 'false';}
			return answer;
	},
	
	//Returns the Date/Time of right now.
	getNowDateTime: function(){
		var now = gs.nowDateTime(); //Now Date/Time
		return now;
	},
	
	//Returns the Date right now.
	getNowDate: function(){
		var now = GlideDate(); //Now Date
		return now.getLocalDate();
	},
	
	//Returns the Time of right now.
	getNowTime: function(){
		var now = GlideTime(); //Now Time
		var modnow = now.getLocalTime().toString().split(' ');
		return modnow[1];
	},
	
	//Takes a date/time field and adds time to it.
	//params = sysparm_fdt (the first date/time field), sysparm_addtype (type of time to add - second, minute, hour, day, week, month, year), sysparm_addtime (amount of time to add based on the type).
	addDateTimeAmount: function(){
		var firstDT = this.getParameter('sysparm_fdt'); //First Date-Time Field
		var addTYPE = this.getParameter('sysparm_addtype'); //What to add - second (addSeconds()), minute (need to add conversion), hour (need to add conversion), day (addDays()), week (addWeeks()), month (addMonths()), year (addYears())
		var addTIME = this.getParameter('sysparm_addtime'); //How much time to add
		var day = GlideDateTime(firstDT);
		
		if(addTYPE == 'second'){day.addSeconds(addTIME);}
			else if (addTYPE == 'minute'){day.addSeconds(addTIME*60);}
			else if (addTYPE == 'hour'){day.addSeconds(addTIME*(60*60));}
			else if (addTYPE == 'day'){day.addDays(addTIME);}
			else if (addTYPE == 'week'){day.addWeeks(addTIME);}
			else if (addTYPE == 'month'){day.addMonths(addTIME);}
			else if (addTYPE == 'year'){day.addYears(addTIME);}
			else {day.addDays(addTIME);}
			
		//return "First Date: " + firstDT + " -Time to Add: " + addTIME + " -Add Type: " + addTYPE + " -Added Time: " + day;
		day = day.getDisplayValue();
		return day;
	},
	
	//Takes a glide date field and adds time to it.
	//params = sysparm_fdt (the first date/time field), sysparm_addtype (type of time to add - day, week, month, year),sysparm_addtime (amount of time to add based on the type).
	addDateAmount: function(){
		var firstDT = this.getParameter('sysparm_fdt'); //First Date Field
		var addTYPE = this.getParameter('sysparm_addtype'); //What to add - day (addDays()), week (addWeeks()), month (addMonths()), year (addYears())
		var addTIME = this.getParameter('sysparm_addtime'); //How much time to add
		var day = GlideDate();
		day.setValue(firstDT);
		
		if(addTYPE == 'day'){day.addDays(addTIME);}
			else if (addTYPE == 'week'){day.addWeeks(addTIME);}
			else if (addTYPE == 'month'){day.addMonths(addTIME);}
			else if (addTYPE == 'year'){day.addYears(addTIME);}
			else {day.addDays(addTIME);}
			
		//return "First Date: " + firstDT + " -Time to Add: " + addTIME + " -Add Type: " + addTYPE + " -Added Time: " + day;
		return day;
	},
	
	addTimeAmount: function(){
		var firstDT = this.getParameter('sysparm_fdt'); //First Date-Time Field
		var addTYPE = this.getParameter('sysparm_addtype'); //What
		var addTIME = this.getParameter('sysparm_addtime'); //How much time to add
		var time = GlideTime();
		time.setValue(firstDT);
		
		if(addTYPE == 'second'){time.addSeconds(addTIME);}
			else if (addTYPE == 'minute'){time.addSeconds(addTIME*60);}
			else if (addTYPE == 'hour'){time.addSeconds(addTIME*(60*60));}
			else {time.addSeconds(addTIME);}
			
		var modtime = time.toString().split(' ');
		//return "First Date: " + firstDT + " -Time to Add: " + addTIME + " -Add Type: " + addTYPE + " -Added Time: " + time;
		return modtime[1];
	},
	getDateDiffExcWeekends : function(){
		//Make Sure that start and end are GlideDateTime Objects
		var start = new GlideDateTime(gs.nowDateTime()); //this.getParameter('sysparm_start');
		var end = new GlideDateTime(this.getParameter('sysparm_end'));
		
		var days = 0 ;
		while (start < end) {
			start.addDays(1);
			if (start.getDayOfWeek() != 6 && start.getDayOfWeek() != 7)      //excluding Weekend
				{
				days++ ;
			}
		}
		return days;
	},
	//Private function to calculate the date difference return result in second, minute, hour, day.
	_calcDateDiff: function(diffTYPE, seconds){
		var thisdiff;
		if (diffTYPE == "day"){thisdiff = seconds/86400;}
			else if (diffTYPE == "hour"){thisdiff = seconds/3600;}
			else if (diffTYPE == "minute"){thisdiff = seconds/60;}
			else if (diffTYPE == "second"){thisdiff = seconds;}
			else {thisdiff = seconds;}
			return thisdiff;
	},
	
	type: 'ClientDateTimeUtils'
});