// Password strength meter
// This jQuery plugin is written by firas kassem [2007.04.05]
// Firas Kassem  phiras.wordpress.com || phiras at gmail {dot} com
// for more information : http://phiras.wordpress.com/2007/04/08/password-strength-meter-a-jquery-plugin/

var shortPass = 'Too short'
var badPass = 'Bad'
var goodPass = 'Good'
var strongPass = 'Strong'



function passwordStrength(password,username)
{
    score = 0 
    

    //password < 4
    if (password.length < 4 ) {	updateGUI("thepass",score);  return shortPass }
    
    //password == username
    if (password.toLowerCase()==username.toLowerCase()) {	updateGUI("thepass",score); return badPass}
    
    //password length
    score += password.length * 4
    score += ( checkRepetition(1,password).length - password.length ) * 1
    score += ( checkRepetition(2,password).length - password.length ) * 1
    score += ( checkRepetition(3,password).length - password.length ) * 1
    score += ( checkRepetition(4,password).length - password.length ) * 1

    //password has 3 numbers
    if (password.match(/(.*[0-9].*[0-9].*[0-9])/))  score += 5 
    
    //password has 2 sybols
    if (password.match(/(.*[!,@,#,$,%,^,&,*,?,_,~].*[!,@,#,$,%,^,&,*,?,_,~])/)) score += 5 
    
    //password has Upper and Lower chars
    if (password.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/))  score += 10 
    
    //password has number and chars
    if (password.match(/([a-zA-Z])/) && password.match(/([0-9])/))  score += 15 
    //
    //password has number and symbol
    if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([0-9])/))  score += 15 
    
    //password has char and symbol
    if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([a-zA-Z])/))  score += 15 
    
    //password is just a nubers or chars
    if (password.match(/^\w+$/) || password.match(/^\d+$/) )  score -= 10 
    
	updateGUI("thepass",score); 

	//verifing 0 < score < 100
    if ( score < 0 )  score = 0 
    if ( score > 100 )  score = 100 
    

    if (score < 34 )  return badPass 
    if (score < 68 )  return goodPass

    return strongPass
}


function passwordStrength2(password,username)
{
    score = 0 
    

    //password < 4
    if (password.length < 4 ) { return shortPass }
    
    //password == username
    if (password.toLowerCase()==username.toLowerCase()) { return badPass}
    

	if (password.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/) && password.match(/([0-9])/)) 
	    return strongPass
	else
		return badPass
}


// checkRepetition(1,'aaaaaaabcbc')   = 'abcbc'
// checkRepetition(2,'aaaaaaabcbc')   = 'aabc'
// checkRepetition(2,'aaaaaaabcdbcd') = 'aabcd'

function checkRepetition(pLen,str) {
    res = ""
    for ( i=0; i<str.length ; i++ ) {
        repeated=true
        for (j=0;j < pLen && (j+i+pLen) < str.length;j++)
            repeated=repeated && (str.charAt(j+i)==str.charAt(j+i+pLen))
        if (j<pLen) repeated=false
        if (repeated) {
            i+=pLen-1
            repeated=false
        }
        else {
            res+=str.charAt(i)
        }
    }
    return res
}


function updateGUI(strFieldID,score) 
{		
	
	 // Get controls
    	var ctlBar = document.getElementById(strFieldID + "_bar"); 
    	var ctlText = document.getElementById(strFieldID + "_text");
    	if (!ctlBar || !ctlText)
    		return;


 	// Color and text
 	if (score > 68)
 	{
 		strText = "Strong";
 		strColor = "#3bce08";
		ctlBar.style.width = "100%";
 	}
 	else if (score > 34)
 	{
 		strText = "Secure";
 		strColor = "orange";
		ctlBar.style.width = "60%";
	}
 	else
 	{
 		strColor = "red";
 		strText = "Weak";
		ctlBar.style.width = "10%";
 	}
	ctlBar.style.backgroundColor = strColor;
	ctlText.innerHTML = "<span style='color: " + strColor + ";'>" + strText + "</span>";
}