/**
 * Title:        ValidateRegForm
 * Description:  Validates the details entered by the user for the TerraMapButton forms
 * Copyright:    Copyright (c) 2008
 * Company:      LISAsoft
 * @author       Simon Green
 * 				 	Email validation code taken from 
 *					http://javascript.internet.com/forms/email-address-validation.html
 *					Written by Sandeep V. Tamhankar (stamhankar@hotmail.com): V1.1.3
 */

/** 
 *	FUNCTION:		validateAddress
 *	ARGUMENTS:		form
 *	DESCRIPTION:	Validates the address.  Checks lengths and character types
 */
function validateAddress(myForm) {
	var stNum = myForm.streetNumber.value;
	var stName = myForm.streetName.value;
	var stType = myForm.streetType.value;
	var suburb = myForm.suburb.value;
	var state = myForm.state.value;
	
	var errorMessage = "The following problems were found with your form\n";
	var valid = true;
	
	// Matches any digit 
	var digitPattern = /\w+/;
	
	// Matches any alpha characters or a white space
	var stringPattern = /([a-zA-Z]+\s*)+/;
	
	if (stNum.length > 11) {
		errorMessage = errorMessage + "Street number is too long.  Must be less than 11 characters long\n";
		valid = false;
	} else if((!digitPattern.test(stNum)) && (stNum != "")) {	
		errorMessage = errorMessage + "Street number is not a number\n";
		valid = false;
	}
	
	if (stName.length > 45) {
		errorMessage = errorMessage + "Street name is too long.  Must be less than 45 characters long\n";
		valid = false;
	} else if((stName == "") && (stNum != "")) {
		errorMessage = errorMessage + "Street Name cannot be empty if Street Number is not empty\n";
		valid = false;	
	} else if((!stringPattern.test(stName)) && (stNum != "")) {	
		errorMessage = errorMessage + "Street name contains invalid characters\n";
		valid = false;
	}
	
	if(suburb == "") {
		errorMessage = errorMessage + "Suburb is empty\n";
		valid = false;
	} else if (suburb.length > 46) {
		errorMessage = errorMessage + "Suburb is too long.  Must be less than 46 characters long\n";
	} else if(!stringPattern.test(suburb)) {	
		errorMessage = errorMessage + "Suburb contains non-alpha characters\n";
		valid = false;
	}
	
	if(state == "") {
		errorMessage = errorMessage + "State is empty\n";
		valid = false;
	}
	
	if(valid == false) {
		alert(errorMessage);
	}	
	return valid;
}

/** 
 *	FUNCTION:		getChceckValue()
 *	ARGUMENTS:		radio button group
 *	DESCRIPTION:	return the value of the radio button that is checked
 *					return an empty string if none are checked, or
 *					there are no radio buttons
 */

function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}

/** 
 *	FUNCTION:		validateTerms
 *	ARGUMENTS:		form
 *	DESCRIPTION:	Validates the Terms and Conditions page
 */
 
function validateTerms(myForm) { 
	var email = myForm.email.value;
	var url = myForm.site.value;

	var errorMessage = "The following problems were found with your form:\n\n";
	var valid = true;
	
	// Matches a valid URL
	// Optional 'http(s)://'
	// optional 'www.' - may contain numbers eg: www1 
	// must have '[some host name].[extention]' 
	// zero or more '.[extention/country code]' 
	// zero or more '/[directory]' 
	// zero or more '.[file extention]'
	var urlPattern = /(http(s)?:\/\/)?(\w+\.)?(\w)+(\.)(\w)+(\.\w+)*(\/\S+)*(\.\w+)*/;

	var validEmail = emailCheck(email);

	if (validEmail == false) {
		errorMessage = errorMessage + "Email address is invalid\n";
		valid = false;
	} else if(email.length > 40) {
		errorMessage = errorMessage + "Email address is too long.  Must be less than 40 characters long\n";
	}
	
	if(url == "") {
		errorMessage = errorMessage + "URL is empty\n";
		valid = false;
	} else if (url.length > 120) {
		errorMessage = errorMessage + "URL is too long.  Must be less than 120 characters long\n";
	} else if(!urlPattern.test(url)) {	
		errorMessage = errorMessage + "URL is invalid\n";
		valid = false;
	}

	var terms = getCheckedValue(myForm.elements['agreedTC']);
	
	if (terms == "No") {
		errorMessage = errorMessage + "You must accept the Terms & Conditions before proceeding\n";
		valid = false;
	}
			
	if(valid == false) {
		alert(errorMessage);
	}	

	return valid;
}
// EMAIL VALIDATION CODE

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("Ths username contains invalid characters.");
			return false;
   		}
	}
	for (i=0; i<domain.length; i++) {
		if (domain.charCodeAt(i)>127) {
			//alert("Ths domain name contains invalid characters.");
			return false;
   		}
	}

// See if "user" is valid 

	if (user.match(userPat)==null) {

// user is not valid

		//alert("The username 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 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 or two letter " + "country.");
		return false;
	}

// Make sure there's a host name preceding the domain.

	if (len<2) {
		//alert("This address is missing a hostname!");
		return false;
	}

// If we've gotten this far, everything's valid!
	return true;
}