define(function(require) {
    'use strict';

    var appController = require('js/app-controller');

    var LoginInitialCtrl = function($scope, $location, $routeParams) {
        if (!appController._emailDao && !$routeParams.dev) {
            $location.path('/'); // init app
            return;
        }

        var emailDao = appController._emailDao,
            states, termsMsg = 'You must accept the Terms of Service to continue.';

        states = {
            IDLE: 1,
            PROCESSING: 2,
            DONE: 3
        };
        $scope.state.ui = states.IDLE; // initial state

        //
        // scope functions
        //

        /**
         * Continue to key import screen
         */
        $scope.importKey = function() {
            if (!$scope.state.agree) {
                $scope.onError({
                    message: termsMsg
                });
                return;
            }

            // sing up to newsletter
            $scope.signUpToNewsletter();
            // go to key import
            $location.path('/login-new-device');
        };

        /**
         * Continue to keygen
         */
        $scope.generateKey = function() {
            if (!$scope.state.agree) {
                $scope.onError({
                    message: termsMsg
                });
                return;
            }

            // sing up to newsletter
            $scope.signUpToNewsletter();
            // go to set keygen screen
            $scope.setState(states.PROCESSING);

            setTimeout(function() {
                emailDao.unlock({
                    passphrase: undefined // generate key without passphrase
                }, function(err) {
                    if (err) {
                        $scope.setState(states.IDLE);
                        $scope.onError(err);
                        return;
                    }

                    appController._auth.storeCredentials(function(err) {
                        if (err) {
                            return $scope.onError(err);
                        }

                        $location.path('/desktop');
                        $scope.$apply();
                    });
                });
            }, 500);
        };

        /**
         * [signUpToNewsletter description]
         * @param  {Function} callback (optional)
         */
        $scope.signUpToNewsletter = function(callback) {
            if (!$scope.state.newsletter) {
                return;
            }

            var address = emailDao._account.emailAddress;
            var uri = 'https://whiteout.us8.list-manage.com/subscribe/post?u=52ea5a9e1be9e1d194f184158&id=6538e8f09f';

            var formData = new FormData();
            formData.append('EMAIL', address);
            formData.append('b_52ea5a9e1be9e1d194f184158_6538e8f09f', '');

            var xhr = new XMLHttpRequest();
            xhr.open('post', uri, true);

            xhr.onload = function() {
                if (callback) {
                    callback(null, xhr);
                }
            };

            xhr.onerror = function(err) {
                if (callback) {
                    callback(err);
                }
            };

            xhr.send(formData);
        };

        $scope.setState = function(state) {
            $scope.state.ui = state;
        };
    };

    return LoginInitialCtrl;
});