/***********************************************
/* RMS OLB Arrival/Departure Validation - CAP
/***********************************************/

// Valid date character, minimum year and maximum year
var dtCh= "-";
//From RMS - dates tracked.  SCW script must have these same values.
var minYear=2011;
var maxYear=2012;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}



function thankChrist(month,day,year){
 
         thisDate = month + '/' + day + '/' + year;

/*
         thanksMonth = 10;

         var targetDay = 4; //thursday
         var nTh = 4; //last thursday in nov.

        
         nEarliestDate = 1 + 7 * (nTh - 1);

         earliestThanksgivingDateLong = new Date(year,thanksMonth,nEarliestDate);
         earliestThanksgivingWeekDay = earliestThanksgivingDateLong.getDay();

         if(targetDay == earliestThanksgivingWeekDay){

           offset = 0;
  
         } else {

           if(targetDay < earliestThanksgivingWeekDay){
             offset = targetDay + (7 - earliestThanksgivingWeekDay);
           } else {
             offset = (targetDay + (7 - earliestThanksgivingWeekDay)) - 7;
           }
  
         }           

         thanksgivingDateLong = new Date(year,thanksMonth,nEarliestDate + offset);

         thisDate = Date.parse(thisDate);
         thanksgivingDate = Date.parse(thanksgivingDateLong);
         christmas = Date.parse('12/25/' + year);

         if(thisDate == thanksgivingDate || thisDate == christmas){

*/
         thisDate = Date.parse(thisDate);
         christmas = Date.parse('12/25/' + year);
 
         if(thisDate == christmas){

           result = false;

         } else {

           result =  true;

         }

     return result;

}


function isDate(dtStr){

	
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	
	var strMonth=dtStr.substring(0,pos1)
	
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm-dd-yyyy.")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day.")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear+".")
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date.")
		return false
	}

        if(!thankChrist(strMonth,strDay,strYear)){
                alert('Please contact us at 1-206-219-6427 for information concerning arrivals or departures on Christmas Day.');

                return false
        }


return true
}


	function dateForm(){
	var dt1=document.frm1.txtDateStart;
	var dt2=document.frm1.txtDateEnd;

	if (isDate(dt1.value)==false){
		
		return false
	}
        else if (isDate(dt2.value)==false){
		
		return false
	} 
        else 
        {
        var day1, day2;
        var month1, month2;
        var year1, year2;

        value1 = dt1.value;

        value2 = dt2.value;

        month1 = value1.substring (0, value1.indexOf ("-"));
        day1 = value1.substring (value1.indexOf ("-")+1, value1.lastIndexOf ("-"));
        year1 = value1.substring (value1.lastIndexOf ("-")+1, value1.length);

        month2 = value2.substring (0, value2.indexOf ("-"));
        day2 = value2.substring (value2.indexOf ("-")+1, value2.lastIndexOf ("-"));
        year2 = value2.substring (value2.lastIndexOf ("-")+1, value2.length); 

        //get current date to test for valid arr/dep
        var currentTime = new Date()
        var tstmonth = currentTime.getMonth() + 1
        var tstday = currentTime.getDate()
        var tstyear = currentTime.getFullYear()
        tstcurrdate = tstmonth + "/" + tstday + "/" + tstyear;

        tstcurrdatemaster = Date.parse(tstcurrdate);

        //date1 = year1+"/"+month1+"/"+day1;
        //date2 = year2+"/"+month2+"/"+day2;

        date1 = month1 + '/' + day1 + '/' + year1;
        date2 = month2 + '/' + day2 + '/' + year2;

        firstDate = Date.parse(date1);
        secondDate= Date.parse(date2);
        
        msPerDay = 24 * 60 * 60 * 1000;

        if (firstDate<tstcurrdatemaster){
                alert("Please enter a valid arrival date.")
		
		return false
        }
        else if (secondDate<tstcurrdatemaster){
                alert("Please enter a valid departure date.")
		
		return false
        }
        //*** OLB3SETUP: Calculate the minimum days out to allow reservation
        mindaysout = Math.round((firstDate.valueOf()-tstcurrdatemaster.valueOf())/ msPerDay);
        if (mindaysout<1){
		alert("To book a reservation online, your arrival date must be no less than 1 day from today\'s date.")
		
                return false
	}

        //arr and dep are fine, calculate totaldays
        totaldays = Math.round((secondDate.valueOf()-firstDate.valueOf())/ msPerDay);

        //*** OLB3SETUP: Make sure totaldays is within the limits of OLB3SETUP 
        if (totaldays>=0 && totaldays<2){
		alert("The Minimum number of nights for online bookings is 2 nights. \r\nPlease verify that your arrival and departure dates are correct.")
		dt1.focus()
                return false
	}
        else if (totaldays<0){
		alert("Your departure date cannot be prior to your arrival date.")
		dt1.focus()
                return false
	}
        else if (totaldays>15){
		alert("The Maximum number of nights for online bookings is 15 nights. \r\nPlease verify that your arrival and departure dates are correct.")
		dt1.focus()
                return false
	}
//Everything is fine, set TOTALDAYS and continue with avail search
document.frm1.TOTALDAYS.value = totaldays;
return true
        }
}