/* jquery */
$(document).ready(function() {
					
					$('#create_account input[name=password]').change( function() {
						checkPassword($(this).attr('value'));														   
					});
					
	});


var commonPasswords = new Array('password', 'pass', '1234', '12456', '124567', 'mama', 'papa', 'kind');

var numbers = "0123456789";

var lowercase = "abcdefghijklmnopqrstuvwxyz";

var uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

var punctuation = "!.@$£#*()%~<>{}[]";

function checkPassword(password) {

var combinations = 0;

if (contains(password, numbers) > 0) {

combinations += 10;

}

if (contains(password, lowercase) > 0) {

combinations += 26;

}

if (contains(password, uppercase) > 0) {

combinations += 26;

}

if (contains(password, punctuation) > 0) {

combinations += punctuation.length;

}

// work out the total combinations

var totalCombinations = Math.pow(combinations, password.length);

// if the password is a common password, then everthing changes...

if (isCommonPassword(password)) {

totalCombinations = 75000 // about the size of the dictionary

}

// work out how long it would take to crack this (@ 200 attempts per second)

var timeInSeconds = (totalCombinations / 200) / 2;

// this is how many days? (there are 86,400 seconds in a day.

var timeInDays = timeInSeconds / 86400

// how long we want it to last

var lifetime = 365;

// how close is the time to the projected time?

var percentage = timeInDays / lifetime;

var friendlyPercentage = cap(Math.round(percentage * 100), 100);

if (totalCombinations != 75000 && friendlyPercentage < (password.length * 5)) {

friendlyPercentage += password.length * 5;

}

var progressBar = document.getElementById("progressBar");

progressBar.style.width = friendlyPercentage + "%";

if (percentage > 1) {

// strong password

progressBar.style.backgroundColor = "#3bce08";

return;

}

if (percentage > 0.5) {

// reasonable password

progressBar.style.backgroundColor = "#ffd801";

return;

}

if (percentage > 0.10) {

// weak password

progressBar.style.backgroundColor = "orange";

return;

}

// useless password!

if (percentage <= 0.10) {

// weak password

progressBar.style.backgroundColor = "red";

return;

}

}

function cap(number, max) {

if (number > max) {

return max;

} else {

return number;

}

}

function isCommonPassword(password) {

for (i = 0; i < commonPasswords.length; i++) {

var commonPassword = commonPasswords[i];

if (password == commonPassword) {

return true;

}

}

return false;

}

function contains(password, validChars) {

count = 0;

for (i = 0; i < password.length; i++) {

var char = password.charAt(i);

if (validChars.indexOf(char) > -1) {

count++;

}

}

return count;

}