Contacts_Algorithm

$scope.addContact = function(contact) {
        $ionicPopup.show({
            template: '<input type="text" ng-model="data.contact" placeholder="Username">',
            title: "Username of Contact that you wish to add: ",
            scope: $scope,
            buttons: [
            { text: "Cancel" },
            {
                text: '<b>Save</b>',
                type: 'button-positive',
                onTap: function(e) {
                    if (!$scope.data.contact) {
                        e.preventDefault();
                    }
                    else {
                        $scope.userNames = [];
                        var contacts = [];
                        for (var i = 1; i < 7; i++) {
                            //console.log($scope.users["simplelogin:"+i]);
                            $scope.userNames.push($scope.users["simplelogin:"+i].userData[0].name);
                            //contacts.push($scope.data.contacts[i-1].name);
                            //console.log($scope.data.contacts[i-1].name);
                        }

                        var match = false;
                        var counter = 0;
                        //console.log($scope.userNames);
                        for (var j = 0; j <= $scope.userNames.length; j++) {
                            //Contact Already Exsists...
                            //console.log(contacts[j-1]);
                            if ($scope.data.contact === contacts[j-1]) {
                                $ionicPopup.alert({
                                    title: "Contact Already Exsits"
                                });
                            }
                            //Found A Match and Saved
                            else if ($scope.data.contact === $scope.userNames[j] && !match) {
                                match = true;
                                if ($scope.data.hasOwnProperty("contacts") !== true) {
                                    $scope.data.contacts = [];
                                }
                                $scope.data.contacts.push({
                                    name: $scope.data.contact
                                })
                                $scope.data.contact = "";
                            }
                            //Could Not Find a Match
                            else if (counter >= $scope.userNames.length) {
                                $ionicPopup.alert({
                                    title: "No Match Found"
                                });
                                $scope.data.contact = "";
                            }
                            //Didn't find a match but still looking
                            else if ($scope.data.contact !== $scope.userNames[j] && !match) {
                                counter++;
                                //console.log("Counter: " + counter);
                            }
                            else if (match) {
                                console.log("Matched");
                                $scope.data.contact = "";
                                break;
                            }
                            // console.log(j);
                            // console.log($scope.userNames.length);
                        }
                    }
                }
            }
            ]
        });
}