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//****************************************************************************************
//*  validate.js
//*  Comments Last Updated:
//*     08/20/2001 by Gordon Chisholm
//*     09/06/2001 by Gordon Chisholm
//*			09/24/2002 by Gordon Chisholm
//*				- Added validation for two new form fields,"site_name" and "group_name"
//*			08/29/2003 by Gordon Chisholm
//*				- Modified to work with the sf36 join.aspx page
//*
//*   PURPOSE: 
//*  1) This script is used for form validation within the small groups shopping cart
//*
//****************************************************************************************
//-----------------------------------------------------------------------
function checkfield(field){
// This function checks to see if there is a value in the field passed
// Input: field value
// Output: boolean

  if (field == '' || field == null){ // the field is empty
    return false;
  }
  else{ //the field is not empty
    return true;
  }
}

//-----------------------------------------------------------------------
function field_length(field, length){
// This function checks to see if the length of the field passed is mre than
// the required minimum length
// Input: field value, length to check for
// Output: boolean

  if (field.length < length){ //field is not long enough
    return false;
  }
  else{ //field is long enough
    return true;
  }
}

//-----------------------------------------------------------------------
function password_match(password1, password2){
// this function checks to see if the value of the two fields passed to it
// are equal
// Input: password 1 value, password 2 value
// Output: boolean

  if (password1 != password2){ //fields are not equal
    return false;
  }
  else{ //fields are equal
    return true;
  }
}

//-----------------------------------------------------------------------
function checkCharacter(field, allowNumeric){
// this function check to see if the field contains any invalid characters
// Input: Field object
// Output: boolean

  if (allowNumeric == 'yes'){
    var inValid = '';  //allow anything but blank spaces
  }
  else{
    var inValid = '1234567890';  //allowable characters
  }
  var temp;
  for (var i=0; i<field.value.length; i++){
    temp = '' + field.value.substring(i, i+1);
    if (inValid.indexOf(temp) != '-1' || temp == ' '){ //invalid character found
      return false;
    }
  }
  //field is ok
  return true;
}

function checkSpace(field){
// this function check to see if the field contains any invalid characters
// Input: Field object
// Output: boolean

  var temp;
  for (var i=0; i<field.value.length; i++){
    temp = '' + field.value.substring(i, i+1);
    if (temp == ' '){ //space character found
      return false;
    }
  }
  //field is ok
  return true;
}

//-----------------------------------------------------------------------
function checkPhone(field){
// this function checks for invald characters in the phone number field  
// Input: Field object value
// Output: boolean

  var valid = '0123456789()- .';  //valid characters
  var temp;
  for (var i=0; i<field.length; i++) {
    temp = '' + field.substring(i, i+1);
    if (valid.indexOf(temp) == '-1'){ //invalid character found
	return false;
    }
  }
  //field is ok
  return true;
}

//-----------------------------------------------------------------------
function emailCheck (emailStr){

/* The following variable tells the rest of the function whether or not
to verify that the address ends in a two-letter country or well-known
TLD.  1 means check it, 0 means don't. */

var checkTLD=1;

/* The following is the list of known TLDs that an e-mail address must end with. */

var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;

/* The following pattern is used to check if the entered e-mail address
fits the user@domain format.  It also is used to separate the username
from the domain. */

var emailPat=/^(.+)@(.+)$/;

/* The following string represents the pattern for matching all special
characters.  We don't want to allow special characters in the address. 
These characters include ( ) < > @ , ; : \ " . [ ] */

var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";

/* The following string represents the range of characters allowed in a 
username or domainname.  It really states which chars aren't allowed.*/

var validChars="\[^\\s" + specialChars + "\]";

/* The following pattern applies if the "user" is a quoted string (in
which case, there are no rules about which characters are allowed
and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
is a legal e-mail address. */

var quotedUser="(\"[^\"]*\")";

/* The following pattern applies for domains that are IP addresses,
rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
e-mail address. NOTE: The square brackets are required. */

var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

/* The following string represents an atom (basically a series of non-special characters.) */

var atom=validChars + '+';

/* The following string represents one word in the typical username.
For example, in john.doe@somewhere.com, john and doe are words.
Basically, a word is either an atom or quoted string. */

var word="(" + atom + "|" + quotedUser + ")";

// The following pattern describes the structure of the user

var userPat=new RegExp("^" + word + "(\\." + word + ")*$");

/* The following pattern describes the structure of a normal symbolic
domain, as opposed to ipDomainPat, shown above. */

var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

/* Finally, let's start trying to figure out if the supplied address is valid. */

/* Begin with the coarse pattern to simply break up user@domain into
different pieces that are easy to analyze. */

var matchArray=emailStr.match(emailPat);

if (matchArray==null) {

/* Too many/few @'s or something; basically, this address doesn't
even fit the general mould of a valid e-mail address. */

alert("Email address seems incorrect (check @ and .'s)");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];

// Start by checking that only basic ASCII characters are in the strings (0-127).

for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
alert("This username (the section before the @ symbol) contains invalid characters.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("This domain name (the section after the @ symbol) contains invalid characters.");
return false;
   }
}

// See if "user" is valid 

if (user.match(userPat)==null) {

// user is not valid

alert("This username (the section before the @ symbol) doesn't seem to be valid.");
return false;
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
host name) make sure the IP address is valid. */

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {

// this is an IP address

for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
alert("Destination IP address is invalid!");
return false;
   }
}
return true;
}

// Domain is symbolic name.  Check if it's valid.
 
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
alert("The domain name (the section after the @ symbol) does not seem to be valid.");
return false;
   }
}

/* domain name seems valid, but now make sure that it ends in a
known top-level domain (like com, edu, gov) or a two-letter word,
representing country (uk, nl), and that there's a hostname preceding 
the domain or country. */

if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
alert("The address must end in a well-known domain (i.e. \'com\', \'net\', or \'org\') or two letter country code.");
return false;
}

// Make sure there's a host name preceding the domain.

if (len<2) {
alert("This address is missing a hostname!");
return false;
}

return true;
}

//-----------------------------------------------------------------------
function validateRegistration(form){
// this function passes each field from the registration page to be validated
// Input: Form object
// Output: boolean

//**********************************************************************************************************
//	Validate E-mail Addrress
  if (checkfield(form.txtEmail.value) == false){ // no value in field
    alert('Please enter your email address.');
    document.forms['Form1'].txtEmail.focus();
    return false;
  }
  else{
    if (emailCheck(form.txtEmail.value) == false){ // email is not valid
			document.forms['Form1'].txtEmail.focus();
      document.forms['Form1'].txtEmail.select();
			return false;
    }
  }

//**********************************************************************************************************
//	Validate Password
  if (checkfield(form.txtPassword1.value) == false){ // no value in field
    alert('Please enter your desired Password.');
    document.forms['Form1'].txtPassword1.focus();
    return false;
  }
    if(checkSpace(form.txtPassword1) == false){ // field value contains blank space(s)
      alert('Please do not use any blank spaces in your Password.');
      document.forms['Form1'].txtPassword1.focus();
      document.forms['Form1'].txtPassword1.select();
      return false;
    }

  if (checkfield(form.txtPassword2.value) == false){ // no value in field
    alert('Please confirm your desired password.');
    document.forms['Form1'].txtPassword2.focus();
    return false;
  }

  if(checkSpace(form.txtPassword2) == false){ // field value contains invalid character(s)
    alert('Please do not use any blank spaces in your Password');
    document.forms['Form1'].txtPassword2.focus();
    document.forms['Form1'].txtPassword2.select();
    return false;
  }

  if (password_match(form.txtPassword1.value, form.txtPassword2.value) == false){ // passwords do not match
    alert('Passwords do not match.  Please re-enter.');
    document.forms['Form1'].txtPassword1.focus();
    document.forms['Form1'].txtPassword1.select();
    return false;
  }
  else{
    if (field_length(form.txtPassword1.value, 4) == false){ // field length is too short
      alert('Your Password must be at least 4 characters long.\n Please choose another that is at least 4 characters long..');
      document.forms['Form1'].txtPassword1.focus();
      document.forms['Form1'].txtPassword2.select();
      return false;
    }
  }

//**********************************************************************************************************
//	Validate User Name
  if (checkfield(form.txtUsername.value) == false){ // no value in field
    alert('Please enter your desired User Name.');
    document.forms['Form1'].txtUsername.focus();
    return false;
  }
  else{
    if (field_length(form.txtUsername.value, 4) == false){ // field length is too short
      alert('Your User Name must be at least 4 characters long.\n Please choose another that is at least 4 characters long.');
      document.forms['Form1'].txtUsername.focus();
      document.forms['Form1'].txtUsername.select();
      return false;
    }
  }

  return true;
}


function checkFeedback(Form){
	if (checkfield(Form.txtEmail.value) == false){
		alert('Please enter your email address.');
		Form.txtEmail.focus();
		return false;
	}

	if (emailCheck(Form.txtEmail.value) == false){ // email is not valid
		document.forms['Form1'].txtEmail.focus();
		document.forms['Form1'].txtEmail.select();
		return false;
	}

	if (checkfield(Form.txtQuestion.value) == false){
		alert('Please enter your email message.');
		Form.txtQuestion.focus();
		return false;
	}

	return true;
}

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