/*
TEMPLATE: form_validation.js
TITLE:	  Template
ACTION:	 Displays Sharer details
INPUTS:	 Form values 
OUTPUTS: 
PARENT : 
VERSION	  HISTORY
Version		Date				   Who								 Description
-------		  -----------------------	-----------------------------------------------	------------------------------------------------------------------------------------------
1.0			10 August 2004 		Adrian Moss	  					Baseline version (Commented and listed for the first time)
1.1			10 August 2004		Adrian Moss						Issue6321 There is a problem accepting the apostropies in email addresses so 
																I changed the regular expression script for isValidEmail()
1.2			10 September 2004	Ian Bale						Issue 6514: Modified code to handle groups of only 1 checkbox
1.3			16 March 2005		Ian Bale						Added URL pattern and check to ensure fields are valid URLs
1.4			20 June 2005		Cleo Piera						ICR 428: Added disallowZeroValue for select lists as some selects list have 0 as no option selected
1.5			07 December 2005	Fiaz Ali						Issue 8962: Requried fields that used the fckeditor input were not being parsed unless the "hidden" type is checked.
1.6				27 June 2008				Steven Duddell			Issue 13133: Allow input of a .asia domain 
-------		  -----------------------	------------------------------------------------	------------------------------------------------------------------------------------------
*/

function getFormErrors(form) {
   var errors = new Array();
   var checkboxesdone = new Array();

   
   // loop thru all form elements
   for (var elementIndex = 0; elementIndex < form.elements.length; elementIndex++) {
      var element = form.elements[elementIndex];
	  
      // text and textarea types
      // Issue 8962: Hidden type needs to be checked because of fckEditor input.
      if (element.type == "text" || element.type == "textarea" || element.type == "hidden") {
         element.value = trimWhitespace(element.value)        	
		 
         if (element.required && element.value == '') {
		    errors[errors.length] = element.requiredError;
         }
         
         // maximum length
         else if (element.maxlength && isValidLength(element.value, 0, element.maxlength) == false) {
            errors[errors.length] = element.maxlengthError;
         }

         // minimum length
         else if (element.minlength && isValidLength(element.value, element.minlength, Number.MAX_VALUE) == false) {
            errors[errors.length] = element.minlengthError;
         }
         
         // pattern (credit card number, email address, zip or postal code, alphanumeric, numeric)
         else if (element.pattern) {
            if ( ( (element.pattern.toLowerCase() == 'visa' || element.pattern.toLowerCase() == 'mastercard' || element.pattern.toLowerCase() == 'american express' || element.pattern.toLowerCase() == 'diners club' || element.pattern.toLowerCase() == 'discover' || element.pattern.toLowerCase() == 'enroute' || element.pattern.toLowerCase() == 'jcb' || element.pattern.toLowerCase() == 'credit card') && isValidCreditCard(element.value, element.pattern) == false) ||
                  (element.pattern.toLowerCase() == 'email' && isValidEmailStrict(element.value) == false) ||
                  (element.pattern.toLowerCase() == 'zip or postal code' && isValidZipcode(element.value) == false && isValidPostalcode(element.value) == false) ||
                  (element.pattern.toLowerCase() == 'zipcode' && isValidZipcode(element.value) == false) ||
                  (element.pattern.toLowerCase() == 'postal code' && isValidPostalcode(element.value) == false) ||
                  (element.pattern.toLowerCase() == 'us phone number' && 
                     ( (element.prefix && element.suffix && isValidUSPhoneNumber(element.value, form[element.prefix].value, form[element.suffix].value) == false) || 
                        (!element.prefix && !element.suffix && isValidUSPhoneNumber(element.value) == false) ) ) ||
                  (element.pattern.toLowerCase() == 'alphanumeric' && isAlphanumeric(element.value, true) == false) ||
                  (element.pattern.toLowerCase() == 'numeric' && isNumeric(element.value, true) == false) ||
                  (element.pattern.toLowerCase() == 'alphabetic' && isAlphabetic(element.value, true) == false) ||
                  (element.pattern.toLowerCase() == 'url' && checkURL(element.value) == false)
                   ) {
               errors[errors.length] = element.patternError;
            }
         }
      }
      
      // password 
      else if (element.type == "password") {
         
         // required element
         if (element.required  && element.value == '') {
            errors[errors.length] = element.requiredError;
         }
         
         // maximum length
         else if (element.maxlength && isValidLength(element.value, 0, element.maxlength) == false) {
            errors[errors.length] = element.maxLengthError;
         }

         // minimum length
         else if (element.minlength && isValidLength(element.value, element.minlength, Number.MAX_VALUE) == false) {
            errors[errors.length] = element.minLengthError;
         }
      }
      
      // file upload
      if (element.type == "file") {
         
         // required element
         if (element.required  && element.value == '') {
            errors[errors.length] = element.requiredError;
         }
      }
      
      // select
      else if (element.type == "select-one" || element.type == "select-multiple" || element.type == "select") {

         // required element
         if (element.required && element.selectedIndex == -1) {
            errors[errors.length] = element.requiredError;
         }
         
		 // disallow empty value selection
         else if (element.disallowEmptyValue && element.options[element.selectedIndex].value == '') {
            errors[errors.length] = element.disallowEmptyValueError;
         }

		  // disallow zero value selection
         else if (element.disallowZeroValue && element.options[element.selectedIndex].value == '0') {
            errors[errors.length] = element.disallowZeroValueError;
         }
      }
      
	  
	  
	  
	// checkbox 
	else if (element.type == "checkbox" && element.required) {      
	
		// Issue 6514: New code for checkbox validation.
		var someChecked = false
		var alreadydone = false
		
		for (i=0;i<checkboxesdone.length;i++)
			if (checkboxesdone[i] == element.name)
				alreadydone = true

//alert(element.name)

		if (!alreadydone)
		{
			checkboxesdone[checkboxesdone.length] = element.name
		
			// Deal with different DOM when only 1 checkbox
			
			if (form.elements[element.name].length != undefined)
				for (i=0;i < form.elements[element.name].length; i++)
				{
					if (form.elements[element.name][i].type =='checkbox' && form.elements[element.name][i].checked)
						someChecked = true
				}
			else
				if (form.elements[element.name].type =='checkbox' && form.elements[element.name].checked)
					someChecked = true
						
			if (!someChecked)
				errors[errors.length] = element.requiredError; 		
		}		
 
 		/*	Issue 6514: This code treats all groups of checkboxes as being the same!!
			// there will be no checkboxes checked initially.
			var someChecked = false;
			var checkboxgroup = form.elements[element.name]; 
					
			for (i=0;i < form.elements.length; i++) {
				if (form.elements[i].type =='checkbox' && form.elements[i].checked) {
					someChecked = true;
					//form.submit(); // submit the form
					break;					
				} else {												
				}
			}
		
								
			// var errorCounter = 1;													
			if (!someChecked && !checkboxgroup.tested) {
				// alert(errors.length);
				// alert('please select a checkbox');
				checkboxgroup.tested = true;         
				errors[errors.length] = element.requiredError;      
				// alert('once');
			//break;
			} else {
				//document.mymessages.submit(); // submit the form
			}
		}
		
		*/
		
	}
	  

	// radio buttons
   else if (element.type == "radio" && element.required) {
   
      // there will be no checkboxes checked initially.
		var someChecked = false;
		var radiogroup = form.elements[element.name]; 
		radiogroup.tested = false;  
		for (i=0;i < form.elements.length; i++) {
			if (form.elements[i].type == 'radio' && form.elements[i].checked) {				
				someChecked = true;
				//form.submit(); // submit the form
				break;					
			} else {			
			}			
		}
											
		// var errorCounter = 1;													
		if (!someChecked && !radiogroup.tested) {
			radiogroup.tested = true;         
			//errors[errors.length] = 'testing radio';      
			errors[errors.length] = element.requiredError;			      			
			//alert(element);			
			//break;
		} else {
			// errors[errors.length] = element.requiredError;   // submit the form
		}   
   }	
	
	/*
      // radio buttons
      else if (element.type == "radio") {
	 
         var radiogroup = form.elements[element.name];   
		 
		  alert(radiogroup);
		        
         // required element
         if (element.required && radiogroup.length) {
            var checkedRadioButton = -1;
            for (var radioIndex = 0; radioIndex < radiogroup.length; radioIndex++) {
               if (radiogroup[radioIndex].checked == true) {
                  checkedRadioButton = radioIndex;
                  break;
               }
            }
            if (checkedRadioButton == -1 && !radiogroup.tested) {
               errors[errors.length] = element.requiredError;
               radiogroup.tested = true;
            }
         }         
         radiogroup = null;
      }	  	*/  
   }
	return errors;
}

// Check that the number of characters in a string is between a max and a min
function isValidLength(string, min, max) {
	if (string.length < min || string.length > max) return false;
	else return true;
}

// Check that a credit card number is valid based using the LUHN formula (mod10 is 0)
function isValidCreditCard(number) {
	number = '' + number;
	
	if (number.length > 16 || number.length < 13 ) return false;
	else if (getMod10(number) != 0) return false;
	else if (arguments[1]) {
		var type = arguments[1];
		var first2digits = number.substring(0, 2);
		var first4digits = number.substring(0, 4);
		
		if (type.toLowerCase() == 'visa' && number.substring(0, 1) == 4 &&
			(number.length == 16 || number.length == 13 )) return true;
		else if (type.toLowerCase() == 'mastercard' && number.length == 16 &&
			(first2digits == '51' || first2digits == '52' || first2digits == '53' || first2digits == '54' || first2digits == '55')) return true;
		else if (type.toLowerCase() == 'american express' && number.length == 15 && 
			(first2digits == '34' || first2digits == '37')) return true;
		else if (type.toLowerCase() == 'diners club' && number.length == 14 && 
			(first2digits == '30' || first2digits == '36' || first2digits == '38')) return true;
		else if (type.toLowerCase() == 'discover' && number.length == 16 && first4digits == '6011') return true;
		else if (type.toLowerCase() == 'enroute' && number.length == 15 && 
			(first4digits == '2014' || first4digits == '2149')) return true;
		else if (type.toLowerCase() == 'jcb' && number.length == 16 &&
			(first4digits == '3088' || first4digits == '3096' || first4digits == '3112' || first4digits == '3158' || first4digits == '3337' || first4digits == '3528')) return true;
		
    // if the above card types are all the ones that the site accepts, change the line below to 'else return false'
    else return true;
	}
	else return true;
}

/*/ Check that an email address is valid based on RFC 821 (?)
function isValidEmail(address) {
	if (address != '' && address.search) {
      if (address.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1) return true;
      else return false;
	}
	
   // allow empty strings to return true - screen these with either a 'required' test or a 'length' test
   else return true;
}*/

function isValidEmail(address) {
    var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
    return re.test(address);
}

function isURL (url) {
		// v1.6	|	Issue: 13133 
		  var urlPattern = /^(?:(?:ftp|https?):\/\/)?(?:[a-z0-9](?:[-a-z0-9]*[a-z0-9])?\.)+(?:com|edu|biz|org|gov|int|info|mil|net|name|museum|coop|aero|asia|[a-z][a-z])\b(?:\d+)?(?:\/[^;"'<>()\[\]{}\s\x7f-\xff]*(?:[.,?]+[^;"'<>()\[\]{}\s\x7f-\xff]+)*)?/;  
		  return urlPattern.test(url.toLowerCase());
		}

function checkURL (url) { 
		if (!isURL(url)) {
		  return false;
		  // alert('Please enter correct url!');
		  //field.focus();
		  // field.select();
		  }
		}


// Check that an email address has the form something@something.something
// This is a stricter standard than RFC 821 (?) which allows addresses like postmaster@localhost
function isValidEmailStrict(address) {
	if (isValidEmail(address) == false) return false;
	var domain = address.substring(address.indexOf('@') + 1);
	if (domain.indexOf('.') == -1) return false;
	if (domain.indexOf('.') == 0 || domain.indexOf('.') == domain.length - 1) return false;
	return true;
}

// Check that a US zip code is valid
function isValidZipcode(zipcode) {
	zipcode = removeSpaces(zipcode);
	if (!(zipcode.length == 5 || zipcode.length == 9 || zipcode.length == 10)) return false;
   if ((zipcode.length == 5 || zipcode.length == 9) && !isNumeric(zipcode)) return false;
   if (zipcode.length == 10 && zipcode.search && zipcode.search(/^\d{5}-\d{4}$/) == -1) return false;
   return true;
}

// Check that a Canadian postal code is valid
function isValidPostalcode(postalcode) {
	if (postalcode.search) {
		postalcode = removeSpaces(postalcode);
		if (postalcode.length == 6 && postalcode.search(/^[a-zA-Z]\d[a-zA-Z]\d[a-zA-Z]\d$/) != -1) return true;
		else if (postalcode.length == 7 && postalcode.search(/^[a-zA-Z]\d[a-zA-Z]-\d[a-zA-Z]\d$/) != -1) return true;
		else return false;
	}
	return true;
}

// Check that a US or Canadian phone number is valid
function isValidUSPhoneNumber(areaCode, prefixNumber, suffixNumber) {
   if (arguments.length == 1) {
      var phoneNumber = arguments[0];
      phoneNumber = phoneNumber.replace(/\D+/g, '');
      var length = phoneNumber.length;
      if (phoneNumber.length >= 7) {
         var areaCode = phoneNumber.substring(0, length-7);
         var prefixNumber = phoneNumber.substring(length-7, length-4);
         var suffixNumber = phoneNumber.substring(length-4);
      }
      else return false;
   }
   else if (arguments.length == 3) {
      var areaCode = arguments[0];
      var prefixNumber = arguments[1];
      var suffixNumber = arguments[2];
   }
   else return true;

   if (areaCode.length != 3 || !isNumeric(areaCode) || prefixNumber.length != 3 || !isNumeric(prefixNumber) || suffixNumber.length != 4 || !isNumeric(suffixNumber)) return false;
   return true;
}

// Check that a string contains only letters and numbers
function isAlphanumeric(string, ignoreWhiteSpace) {
	if (string.search) {
		if ((ignoreWhiteSpace && string.search(/[^\w\s]/) != -1) || (!ignoreWhiteSpace && string.search(/\W/) != -1)) return false;
	}
	return true;
}

// Check that a string contains only letters
function isAlphabetic(string, ignoreWhiteSpace) {
	if (string.search) {
		if ((ignoreWhiteSpace && string.search(/[^a-zA-Z\s]/) != -1) || (!ignoreWhiteSpace && string.search(/[^a-zA-Z]/) != -1)) return false;
	}
	return true;
}

// Check that a string contains only numbers
function isNumeric(string, ignoreWhiteSpace) {
	if (string.search) {
		if ((ignoreWhiteSpace && string.search(/[^\d\s]/) != -1) || (!ignoreWhiteSpace && string.search(/\D/) != -1)) return false;
	}
	return true;
}

// Remove characters that might cause security problems from a string 
function removeBadCharacters(string) {
	if (string.replace) {
		string.replace(/[<>\"\'%;\)\(&\+]/, '');
	}
	return string;
}

// Remove all spaces from a string
function removeSpaces(string) {
	var newString = '';
	for (var i = 0; i < string.length; i++) {
		if (string.charAt(i) != ' ') newString += string.charAt(i);
	}
	return newString;
}

// Remove leading and trailing whitespace from a string
function trimWhitespace(string) {
	var newString  = '';
	var substring  = '';
	beginningFound = false;
	
	// copy characters over to a new string
	// retain whitespace characters if they are between other characters
	for (var i = 0; i < string.length; i++) {
		
		// copy non-whitespace characters
		if (string.charAt(i) != ' ' && string.charCodeAt(i) != 9) {
			
			// if the temporary string contains some whitespace characters, copy them first
			if (substring != '') {
				newString += substring;
				substring = '';
			}
			newString += string.charAt(i);
			if (beginningFound == false) beginningFound = true;
		}
		
		// hold whitespace characters in a temporary string if they follow a non-whitespace character
		else if (beginningFound == true) substring += string.charAt(i);
	}
	return newString;
}

// Returns a checksum digit for a number using mod 10
function getMod10(number) {
	
	// convert number to a string and check that it contains only digits
	// return -1 for illegal input
	number = '' + number;
	number = removeSpaces(number);
	if (!isNumeric(number)) return -1;
	
	// calculate checksum using mod10
	var checksum = 0;
	for (var i = number.length - 1; i >= 0; i--) {
		var isOdd = ((number.length - i) % 2 != 0) ? true : false;
		digit = number.charAt(i);
		
		if (isOdd) checksum += parseInt(digit);
		else {
			var evenDigit = parseInt(digit) * 2;
			if (evenDigit >= 10) checksum += 1 + (evenDigit - 10);
			else checksum += evenDigit;
		}
	}
	return (checksum % 10);
}