//--------------------------------------------------------------------------------------
//	Application:	SQL Gen
//	Page Name:		commonVal.js
//	Abstract:		This has some common val Javascript validation routines
//	Author:			John Anderson
//
//	Modification History:
//
//	Date			Developer			Reason
//----------------------------------------------------------------------------------------
//	
//----------------------------------------------------------------------------------------

function checkreq(reqfieldArray,reqfieldDisplayArray,form){ 
var i = 0;
for(i=0; i<reqfieldArray.length; i++){
	if(eval("form." + reqfieldArray[i] + ".value") == ''){
	alert("The field " + reqfieldDisplayArray[i] + " must be completed to continue.");
	eval("form." + reqfieldArray[i] + ".focus()");
	return false;
}}return true;}

function checkdate(datefieldArray,datefieldDisplayArray,form){
var i = 0;
for(i=0; i<datefieldArray.length; i++){
	var testYear = eval("form." + datefieldArray[i] + ".value.lastIndexOf('/') + 1");
	var testMonth = eval("form." + datefieldArray[i] + ".value.indexOf('/')");
	var testDay1 = eval("form." + datefieldArray[i] + ".value.indexOf('/')+1");
	var testDay2 = eval("form." + datefieldArray[i] + ".value.lastIndexOf('/')");
	var lenboy = 10;
	if(!isDate(eval("form." + datefieldArray[i] + ".value.substring(testYear,lenboy)"),
		eval("form." + datefieldArray[i] + ".value.substring(0, testMonth)"),
		eval("form." + datefieldArray[i] + ".value.substring(testDay1,testDay2)"))){
		alert("The field " + datefieldDisplayArray[i] + " must be a real date formatted like: mm/dd/yyyy");
		//alert("The date must be a real date formatted like: mm/dd/yyyy");
		eval("form." + datefieldArray[i] + ".focus()");
	return false; 
	}}return true;}
	
function checknum(numfieldArray,numfieldDisplayArray,form){
var i = 0;
for(i=0; i<numfieldArray.length; i++){
	if(!isNumber(eval("form." + numfieldArray[i] + ".value"))){
	alert("The field " + numfieldDisplayArray[i] + " must be numeric.");
	eval("form." + numfieldArray[i] + ".focus()");
	return false;
}}return true;}


function makeArray(n) {
   for (var i = 1; i <= n; i++) {
      this[i] = 0
   } 
   return this
}

var daysInMonth = makeArray(12);
daysInMonth[1] = 31;
daysInMonth[2] = 29;   // must programmatically check this
daysInMonth[3] = 31;
daysInMonth[4] = 30;
daysInMonth[5] = 31;
daysInMonth[6] = 30;
daysInMonth[7] = 31;
daysInMonth[8] = 31;
daysInMonth[9] = 30;
daysInMonth[10] = 31;
daysInMonth[11] = 30;
daysInMonth[12] = 31;

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 isMonth (s)
{   
	if (s > 0 && s < 13) return true;
	return false; 
}

function isDay (s)
{   
	if (s > 0 && s < 32) return true;
	return false; 
}

function isDate (year, month, day)
{   
	// get rid of '0' in the month if there is one
	if (month.substring(0, 1) == "0")
		month = month.substring(1, 2);

	// catch invalid months and days.
    if (! isMonth(month)) return false;
	if (! isDay(day)) return false;

    // catch invalid days, except for February
    if (day > daysInMonth[month]) return false; 

    if ((month == 2) && (day > daysInFebruary(year))) return false;

    return true;
}

function validateDate(date) {

	var testMonth = date.substring(0, date.indexOf("/"));
	var testDay = date.substring(date.indexOf("/")+1, date.lastIndexOf("/"));
	var testYear = date.substring(date.lastIndexOf("/") + 1,date.length);
	
	if (!isNumber(testMonth)) {
		alert("Please enter a valid 2-digit month for all dates.");
		return false;
		}	
	if (!isNumber(testDay)) {
		alert("Please enter a valid 2-digit day for all dates.");
		return false;
		}	
	if (!isNumber(testYear) || (testYear.length < 4)) {
		alert("Please enter a valid 4-digit year for all dates.");
		return false;
		}
		
	// validate the date
	if (!isDate(testYear, testMonth, testDay)) {
		alert("A date entered is not valid.");
		return false;
		}
		
	return true;

}

// this function returns the full year for a given date
function getFullYear(d) 
{
	var y = d.getYear();
	if (y < 1000) y += 1900;
	return y;
}

// Comparing two dates -- return true if day2 >= day1
// assuming here that both date are valid
function dateCompare(day1, month1, year1, day2, month2, year2)
{
	if(month1 < 10){
		month1 = month1.substring(1,2);
	} 
	if(month2 < 10){
		month2 = month2.substring(1,2);
	} 
	
	if (parseInt(year2) > parseInt(year1)){
		return true;
	}
	
	if (parseInt(year2) == parseInt(year1))
	{
		if (parseInt(month2) > parseInt(month1)){
			return true;
		}
		if (parseInt(month2) == parseInt(month1))
		{
			if (parseInt(day2) >= parseInt(day1)){
				return true;
			} else {
				return false;
			}
		}
		if (parseInt(month2) < parseInt(month1)){
			return false;
		}
	}
	
	if (parseInt(year2) < parseInt(year1)){
		return false;
	}
		
	return true;
}

// Returns true if character c is a digit 
// (0 .. 9).
function isDigit (c)
{   
	return ((c >= "0") && (c <= "9"))
}

function isNumber(s)

{   var i;

    // Search through string's characters one by one
    // until we find a non-numeric character.
    // When we do, return false; if we don't, return true.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);

        if (!isDigit(c)) return false;
    }

    // All characters are numbers.
    return true;
}

function isPhoneNumber(phoneNumber){
	// returns true for 10-digit phone number value
	// ignores all whitespace characters and standard phone delimiters:  ( ) - . 
	var ignoreChar = /[\s()-.]/g;
	var strippedNumber = phoneNumber.replace(ignoreChar,"");
	
	if (isNaN(strippedNumber)){
		return false;
	}else if (strippedNumber.length == 10){
		return true;
	}else{
		return false;
	}
}

function isZipCode(zipCode){
	// returns true for 5-digit or 9-digit zip code
	// ignores all whitespace and hyphen characters
	var ignoreChar = /[\s-]/g;
	var strippedZip = zipCode.replace(ignoreChar,"");
	
	if (isNaN(strippedZip)){
		return false;
	}else if (strippedZip.length == 5 || strippedZip.length == 9){
		return true;
	}else{
		return false;
	}
}

function HourCompare(hour1,hour2){
	//alert(hour1);
	//alert(hour1.substring(0,2) + " " + hour1.substring(3,5));
	if(hour2.substring(0,2) > hour1.substring(0,2)){
		return true;
	} else {
		return false;
	}
	
	if(hour2.substring(0,2) == hour1.substring(0,2)){
		if(hour2.substring(5,2) > hour1.substring(5,2)){
			return true;
		} else {
			return false;
		}
	}
}