/***********************************************
* 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 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
	}
return true
}

function dateForm(){
	var dt1=document.forms[0].adate
	var dt2=document.forms[0].adated

if(dt1.value == "" && dt2.value == ""){
return true
} else {

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

        value1 = document.forms[0].adate.value;
        value2 = document.forms[0].adated.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;
     
        firstDate = Date.parse(date1);
        secondDate= Date.parse(date2);
        
        msPerDay = 24 * 60 * 60 * 1000;

        if (firstDate<tstcurrdatemaster){
                alert("Please enter a valid arrival date.")
		dt1.focus()
		return false
        }
        else if (secondDate<tstcurrdatemaster){
                alert("Please enter a valid departure date.")
		dt2.focus()
		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 after today\'s date.\r\nPlease call A and W Rentals at 828-898-9188 for more information.")
		dt1.focus()
                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 or greater. \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>120){
		alert("The Maximum number of nights for online bookings is 120 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.forms[0].TOTALDAYS.value = totaldays;
return true
        }
}

}