// --------------------------------------------------------------------------
// All rights are reserved. Reproduction or transmission in whole or in part,
// in any form or by any, electronic mechanical or otherwise, is prohibited
// without the prior written permission of the copyright owner
//
// Filename ............: custom.validation.js
// Author ..............: Bokkie / Gowi Group Limited
// Project .............: Recruit 5.0
// Created .............: 16.07.2010
// Description .........: Additional validations which does not work properly in mootools
// Calling Samples .....:
// Parameter List ......:
// Major change list ...: 
// Notes ...............:
// --------------------------------------------------------------------------

//////////////////////////////
// E-mail validation        //  
//////////////////////////////
function validateEmail(value) 
{
    if (value == "") return true;
    var emailStr = value;
    var emailPat = /^(.+)@(.+)$/
    var specialChars = "\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
    var validChars = "\[^\\s" + specialChars + "\]"
    var firstChars = validChars
    var quotedUser = "(\"[^\"]*\")"
    var ipDomainPat = /^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
    var atom = "(" + firstChars + validChars + "*" + ")"
    var word = "(" + atom + "|" + quotedUser + ")"
    var userPat = new RegExp("^" + word + "(\\." + word + ")*$")
    var domainPat = new RegExp("^" + atom + "(\\." + atom + ")*$")
    var matchArray = emailStr.match(emailPat);

    if (matchArray == null) 
    {
        return false;
    }

    var user = matchArray[1];
    var domain = matchArray[2];

    if (user.match(userPat) == null) 
    {
        return false;
    }

    var IPArray = domain.match(ipDomainPat);

    if (IPArray != null) {
        for (var i = 1; i <= 4; i++) 
        {
            if (IPArray[i] > 255) 
            {
                return false;
            }
        }
        return true;
    }
    return true;
}


//////////////////////////////
// Date/Time valudation     //
//////////////////////////////
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 dtCh = "/";
    var minYear = 1900;
    var maxYear = 2100;

    var daysInMonth = DaysArray(12);
    var pos1 = dtStr.indexOf(dtCh);
    var pos2 = dtStr.indexOf(dtCh, pos1 + 1);
    var strDay = dtStr.substring(0, pos1);
    var strMonth = 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);

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

function validateDate(value) 
{
    if (value == "") return true;
    return isDate(value);
}