// Password strength meter v2.0
// Matthew R. Miller - 2007
// www.codeandcoffee.com
// Based off of code from:
//  http://www.intelligent-web.co.uk
//  http://www.geekwisdom.com/dyn/passwdmeter

/*
	Password Strength Algorithm:
	
	Password Length:
		5 Points: Less than 4 characters
		10 Points: 5 to 7 characters
		25 Points: 8 or more
		
	Letters:
		0 Points: No letters
		10 Points: Letters are all lower case
		20 Points: Letters are upper case and lower case

	Numbers:
		0 Points: No numbers
		10 Points: 1 number
		20 Points: 3 or more numbers
		
	Characters:
		0 Points: No characters
		10 Points: 1 character
		25 Points: More than 1 character

	Bonus:
		2 Points: Letters and numbers
		3 Points: Letters, numbers, and characters
		5 Points: Mixed case letters, numbers, and characters
		
	Password Text Range:
	
		>= 90: Very Secure
		>= 80: Secure
		>= 70: Very Strong
		>= 60: Strong
		>= 50: Average
		>= 25: Weak
		>= 0: Very Weak
		
*/


// Settings
// -- Toggle to true or false, if you want to change what is checked in the password
var m_strUpperCase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
var m_strLowerCase = "abcdefghijklmnopqrstuvwxyz";
var m_strNumber = "0123456789";
var m_strCharacters = "!@#$%^&*?_~"

// Check password
function checkPassword(strPassword)
{
	// Reset combination count
	var nScore = 0;
	
	// Password length
	// -- Less than 4 characters
	if (strPassword.length < 5)
	{
		nScore += 5;
	}
	// -- 5 to 7 characters
	else if (strPassword.length > 4 && strPassword.length < 8)
	{
		nScore += 10;
	}
	// -- 8 or more
	else if (strPassword.length > 7)
	{
		nScore += 25;
	}

	// Letters
	var nUpperCount = countContain(strPassword, m_strUpperCase);
	var nLowerCount = countContain(strPassword, m_strLowerCase);
	var nLowerUpperCount = nUpperCount + nLowerCount;
	// -- Letters are all lower case
	if (nUpperCount == 0 && nLowerCount != 0) 
	{ 
		nScore += 10; 
	}
	// -- Letters are upper case and lower case
	else if (nUpperCount != 0 && nLowerCount != 0) 
	{ 
		nScore += 20; 
	}
	
	// Numbers
	var nNumberCount = countContain(strPassword, m_strNumber);
	// -- 1 number
	if (nNumberCount == 1)
	{
		nScore += 10;
	}
	// -- 3 or more numbers
	if (nNumberCount >= 3)
	{
		nScore += 20;
	}
	
	// Characters
	var nCharacterCount = countContain(strPassword, m_strCharacters);
	// -- 1 character
	if (nCharacterCount == 1)
	{
		nScore += 10;
	}	
	// -- More than 1 character
	if (nCharacterCount > 1)
	{
		nScore += 25;
	}
	
	// Bonus
	// -- Letters and numbers
	if (nNumberCount != 0 && nLowerUpperCount != 0)
	{
		nScore += 2;
	}
	// -- Letters, numbers, and characters
	if (nNumberCount != 0 && nLowerUpperCount != 0 && nCharacterCount != 0)
	{
		nScore += 3;
	}
	// -- Mixed case letters, numbers, and characters
	if (nNumberCount != 0 && nUpperCount != 0 && nLowerCount != 0 && nCharacterCount != 0)
	{
		nScore += 5;
	}
	
	
	return nScore;
}
 
// Runs password through check and then updates GUI 
function runPassword(strPassword, strFieldID) 
{
	// Check password
	var nScore = checkPassword(strPassword);
	
	 // Get controls
		var ctlBar = document.getElementById(strFieldID + "_bar"); 
		var ctlText = document.getElementById(strFieldID + "_text");
		if (!ctlBar || !ctlText)
			return;
		
		// Set new width
		ctlBar.style.width = nScore + "%";

 	// Color and text
	// -- Very Secure
 	if (nScore >= 90)
 	{
 		var strText = "Very Secure";
 		var strColor = "#0ca908";
 	}
 	// -- Secure
 	else if (nScore >= 80)
 	{
 		var strText = "Secure";
 		vstrColor = "#7ff67c";
	}
	// -- Very Strong
 	else if (nScore >= 70)
 	{
 		var strText = "Very Strong";
 		var strColor = "#1740ef";
	}
	// -- Strong
 	else if (nScore >= 60)
 	{
 		var strText = "Strong";
 		var strColor = "#5a74e3";
	}
	// -- Average
 	else if (nScore >= 50)
 	{
 		var strText = "Average";
 		var strColor = "#e3cb00";
	}
	// -- Weak
 	else if (nScore >= 25)
 	{
 		var strText = "Weak";
 		var strColor = "#e7d61a";
	}
	// -- Very Weak
 	else
 	{
 		var strText = "Very Weak";
 		var strColor = "#e71a1a";
	}
	ctlBar.style.backgroundColor = strColor;
	ctlText.innerHTML = "<span style='color: " + strColor + ";'>" + strText + " - " + nScore + "</span>";
}
 
// Checks a string for a list of characters
function countContain(strPassword, strCheck)
{ 
	// Declare variables
	var nCount = 0;
	
	for (i = 0; i < strPassword.length; i++) 
	{
		if (strCheck.indexOf(strPassword.charAt(i)) > -1) 
		{ 
				nCount++;
		} 
	} 
 
	return nCount; 
}

// username check js

function toggle_username(userid) {
	if (window.XMLHttpRequest) {
		http = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		http = new ActiveXObject("Microsoft.XMLHTTP");
	}
	handle = document.getElementById(userid);
	var url = 'ajax.php?';
	if(handle.value.length > 0) {
		var fullurl = url + 'do=check_username_exists&username=' + encodeURIComponent(handle.value);
		http.open("GET", fullurl, true);
		http.send(null);
		http.onreadystatechange = statechange_username;
	}else{
		document.getElementById('username_exists').innerHTML = '';
	}
}

function statechange_username() {
	if (http.readyState == 4) {
		var xmlObj = http.responseXML;
		var html = xmlObj.getElementsByTagName('result').item(0).firstChild.data;
		document.getElementById('username_exists').innerHTML = html;
		if(html === 'Not Available'){
			document.getElementById('username_exists').style.color = '#e71a1a';	  //red
			document.getElementById('button').disabled = true;
		}
		else if (html === 'Too Short'){
			document.getElementById('username_exists').style.color = '#5a74e3';	  //blue
			document.getElementById('button').disabled = true;
		}
		else {
			document.getElementById('username_exists').style.color = '#0ca908';  //green
			document.getElementById('button').disabled = false;
		}
	}
}

function toggle_email(emailAddr) {
	if (window.XMLHttpRequest) {
		http = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		http = new ActiveXObject("Microsoft.XMLHTTP");
	}
	handle = document.getElementById(emailAddr);
	var url = 'ajax.php?';
	if(handle.value.length > 0) {
		var fullurl = url + 'do=check_email_exists&email=' + encodeURIComponent(handle.value);
		http.open("GET", fullurl, true);
		http.send(null);
		http.onreadystatechange = statechange_email;
	}else{
		document.getElementById('email_exists').innerHTML = '';
	}
}

function statechange_email() {
	if (http.readyState == 4) {
		var xmlObj = http.responseXML;
		var html = xmlObj.getElementsByTagName('result').item(0).firstChild.data;
		document.getElementById('email_exists').innerHTML = html;
		if(html === 'Duplicate email') {
			document.getElementById('email_exists').style.color = '#e71a1a';
			document.getElementById('button').disabled = true;
		}
		else {
			document.getElementById('email_exists').style.color = '#0ca908';
			document.getElementById('button').disabled = false;
		}
	}
}

// password match check js

function verifynotify(field1, field2, result_id, match_html, nomatch_html) {
 this.field1 = field1;
 this.field2 = field2;
 this.result_id = result_id;
 this.match_html = match_html;
 this.nomatch_html = nomatch_html;

 this.check = function() {

   // Make sure we don't cause an error
   // for browsers that do not support getElementById
   if (!this.result_id) { return false; }
   if (!document.getElementById){ return false; }
   r = document.getElementById(this.result_id);
   if (!r){ return false; }

	if(this.field1.value != "") {
		if (this.field1.value == this.field2.value) {
			r.innerHTML = this.match_html;
		} else {
			r.innerHTML = this.nomatch_html;
		}
	}
 }
}


function checkEmail() {
	toggle_email('emailadd');
	var email = document.getElementById('emailadd');
	var filter = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	if (filter.test(email.value)) {
		html = "Valid email"
		document.getElementById('emailcheck').innerHTML = html;
		document.getElementById('emailcheck').style.color = '#0ca908';
	}
	else {
		html = "Invalid email address";
	    document.getElementById('emailcheck').innerHTML = html;
		document.getElementById('emailcheck').style.color = '#e71a1a';	
	}
}