//Requires zxcvbn.js and Bootstrap
//https://github.com/martinwnet/zxcvbn-bootstrap-strength-meter
(function ($) {

$.fn.zxcvbnProgressBar = function (options) {

//init settings
var settings = $.extend({
passwordInput: '#Password',
userInputs: [],
ratings: ["Very weak", "Weak", "OK", "Strong", "Very strong"],
//all progress bar classes removed before adding score specific css class
allProgressBarClasses: "progress-bar-danger progress-bar-warning progress-bar-success progress-bar-striped active",
//bootstrap css classes (0-4 corresponds with zxcvbn score)
progressBarClass0: "progress-bar-danger progress-bar-striped active",
progressBarClass1: "progress-bar-danger progress-bar-striped active",
progressBarClass2: "progress-bar-warning progress-bar-striped active",
progressBarClass3: "progress-bar-success",
progressBarClass4: "progress-bar-success"
}, options);

return this.each(function () {
settings.progressBar = this;
//init progress bar display
UpdateProgressBar();
//Update progress bar on each keypress of password input
$(settings.passwordInput).keyup(function (event) {
UpdateProgressBar();
});
});

function UpdateProgressBar() {
var progressBar = settings.progressBar;
var password = $(settings.passwordInput).val();
if (password) {
var result = zxcvbn(password, settings.userInputs);
//result.score: 0, 1, 2, 3 or 4 - if crack time is less than 10**2, 10**4, 10**6, 10**8, Infinity.
var scorePercentage = (result.score + 1) * 20;
$(progressBar).css('width', scorePercentage + '%');



// modification to disable submit button on _join.php and _forgot_password_reset.php until password strength is Strong or Very Strong
if ( result.score < 3 ) {
$('#password_strength').prop('disabled', true);
} else {
$('#password_strength').prop('disabled', false);
}



if (result.score == 0) {
//weak
$(progressBar).removeClass(settings.allProgressBarClasses).addClass(settings.progressBarClass0);
$(progressBar).html(settings.ratings[0]);
}
else if (result.score == 1) {
//normal
$(progressBar).removeClass(settings.allProgressBarClasses).addClass(settings.progressBarClass1);
$(progressBar).html(settings.ratings[1]);
}
else if (result.score == 2) {
//medium
$(progressBar).removeClass(settings.allProgressBarClasses).addClass(settings.progressBarClass2);
$(progressBar).html(settings.ratings[2]);
}
else if (result.score == 3) {
//strong
$(progressBar).removeClass(settings.allProgressBarClasses).addClass(settings.progressBarClass3);
$(progressBar).html(settings.ratings[3]);
}
else if (result.score == 4) {
//very strong
$(progressBar).removeClass(settings.allProgressBarClasses).addClass(settings.progressBarClass4);
$(progressBar).html(settings.ratings[4]);
}
}
else {
$(progressBar).css('width', '0%');
$(progressBar).removeClass(settings.allProgressBarClasses).addClass(settings.progressBarClass0);
$(progressBar).html('');
}
}
};
})(jQuery);
