(function () {
    'use strict';
    angular.module('app')
        .directive("complexPassword", function () {
            return {
                require: 'ngModel',
                link: function (scope, elm, attrs, ctrl) {
                    ctrl.$parsers.unshift(function (password) {
                        var hasUpperCase = /[A-Z]/.test(password);
                        var hasLowerCase = /[a-z]/.test(password);
                        var hasNumbers = /\d/.test(password);
                        var hasNonalphas = /\W/.test(password);
                        var characterGroupCount = hasUpperCase + hasLowerCase + hasNumbers + hasNonalphas;

                        if (characterGroupCount >= 3) {
                            ctrl.$setValidity('complexity', true);
                            return password;
                        }
                        else {
                            ctrl.$setValidity('complexity', false);
                            return undefined;
                        }

                    });
                }
            };
        });


})();