/*
 * jQuery validate.password plug-in 1.0
 *
 * http://bassistance.de/jquery-plugins/jquery-plugin-validate.password/
 *
 * Copyright (c) 2009 Jörn Zaefferer
 *
 * $Id$
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 */
(function($) {

    var LOWER = /[a-z]/,
		UPPER = /[A-Z]/,
		DIGIT = /[0-9]/,
		DIGITS = /[0-9].*[0-9]/,
		SPECIAL = /[^a-zA-Z0-9]/,
		SAME = /^(.)\1+$/;

    function rating(rate, message) {
        return {
            rate: rate,
            messageKey: message
        };
    }

    function uncapitalize(str) {
        return str.substring(0, 1).toLowerCase() + str.substring(1);
    }

    $.validator.passwordRating = function(password, username) {
    
       
        if (!password || password.length < 8)
            return rating(0, "too-short");
            
        if (username && password.toLowerCase().match(username.toLowerCase()))
            return rating(0, "similar-to-username");
            
       //if (SAME.test(password))
       //     return rating(1, "very-weak");

        var lower = LOWER.test(password),
			upper = UPPER.test(password),
			digit = DIGIT.test(password),
			digits = DIGITS.test(password),
			special = SPECIAL.test(password),
			startdigit = (password.charCodeAt(0) >= 48 && password.charCodeAt(0) <= 57),
			enddigit = (password.charCodeAt(password.length-1) >= 48 && password.charCodeAt(password.length-1) <= 57);

        if (startdigit || enddigit)
            return rating(1, "invalid");  
        
        
        if (!lower || !upper || !digit || !special)
            return rating(1, "invalid");  
    
       //if (lower && upper && digit || lower && digits || upper && digits || special)
       //     return rating(4, "strong");
            
        //if (lower && upper || lower && digit || upper && digit)
        //    return rating(3, "good");

        return rating(7, "valid");
               
        
    }

    $.validator.passwordRating.messages = {
        "similar-to-username": "Too similar to username",
        "too-short": "Password is too short",
        "very-weak": "Password is Very weak",
        "weak": "Password is Weak",
        "good": "Password is Good",
        "strong": "Password is Strong",
        "invalid": "Invalid Password Format",
        "valid": "Acceptable"
    }

    $.validator.addMethod("password", function(value, element, usernameField) {
        // use untrimmed value
        var password = element.value,
        // get username for comparison, if specified
			username = $(typeof usernameField != "boolean" ? usernameField : []);

        var rating = $.validator.passwordRating(password, username.val());
        // update message for this field

        var meter = $(".password-meter", element.form);

        meter.find(".password-meter-bar").removeClass().addClass("password-meter-bar").addClass("password-meter-" + rating.messageKey);
        meter.find(".password-meter-message")
		.removeClass()
		.addClass("password-meter-message")
		.addClass("password-meter-message-" + rating.messageKey)
		.text($.validator.passwordRating.messages[rating.messageKey]);
        // display process bar instead of error message

        return rating.rate > 6;
    }, "&nbsp;");
    // manually add class rule, to make username param optional
    $.validator.classRuleSettings.password = { password: true };

})(jQuery);