public ActionResult Register(RegisterModel model, string returnUrl, bool captchaValid, FormCollection form)
        {
            //check whether registration is allowed
            if (_customerSettings.UserRegistrationType == UserRegistrationType.Disabled)
                return RedirectToRoute("RegisterResult", new { resultId = (int)UserRegistrationType.Disabled });

            if (_workContext.CurrentCustomer.IsRegistered())
            {
                //Already registered customer.
                _authenticationService.SignOut();

                //Save a new record
                _workContext.CurrentCustomer = _customerService.InsertGuestCustomer();
            }
            var customer = _workContext.CurrentCustomer;

            //validate CAPTCHA
            if (_captchaSettings.Enabled && _captchaSettings.ShowOnRegistrationPage && !captchaValid)
            {
                ModelState.AddModelError("", _localizationService.GetResource("Common.WrongCaptcha"));
            }

            if (ModelState.IsValid)
            {
                if (_customerSettings.UsernamesEnabled && model.Username != null)
                {
                    model.Username = model.Username.Trim();
                }

                bool isApproved = _customerSettings.UserRegistrationType == UserRegistrationType.Standard;
                var registrationRequest = new CustomerRegistrationRequest(customer, model.Email,
                    _customerSettings.UsernamesEnabled ? model.Username : model.Email, model.Password, _customerSettings.DefaultPasswordFormat, isApproved);
                var registrationResult = _customerRegistrationService.RegisterCustomer(registrationRequest);
                if (registrationResult.Success)
                {
                    //properties
                    if (_dateTimeSettings.AllowCustomersToSetTimeZone)
                    {
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.TimeZoneId, model.TimeZoneId);
                    }

                    //form fields
                    if (_customerSettings.GenderEnabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.Gender, model.Gender);
                    _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.FirstName, model.FirstName);
                    _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.LastName, model.LastName);
                    if (_customerSettings.DateOfBirthEnabled)
                    {
                        DateTime? dateOfBirth = model.ParseDateOfBirth();
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.DateOfBirth, dateOfBirth);
                    }
                    if (_customerSettings.CompanyEnabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.Company, model.Company);
                    if (_customerSettings.StreetAddressEnabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.StreetAddress, model.StreetAddress);
                    if (_customerSettings.StreetAddress2Enabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.StreetAddress2, model.StreetAddress2);
                    if (_customerSettings.ZipPostalCodeEnabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.ZipPostalCode, model.ZipPostalCode);
                    if (_customerSettings.CityEnabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.City, model.City);
                    if (_customerSettings.CountryEnabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.CountryId, model.CountryId);
                    if (_customerSettings.CountryEnabled && _customerSettings.StateProvinceEnabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.StateProvinceId, model.StateProvinceId);
                    if (_customerSettings.PhoneEnabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.Phone, model.Phone);
                    if (_customerSettings.FaxEnabled)
                        _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.Fax, model.Fax);

                    //save customer attributes
                    _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.CustomCustomerAttributes, "");

                    //login customer now
                    if (isApproved)
                        _authenticationService.SignIn(customer, true);

                    //insert default address (if possible)
                    var defaultAddress = new Address
                    {
                        Name = customer.GetAttribute<string>(SystemCustomerAttributeNames.FirstName)+" "+customer.GetAttribute<string>(SystemCustomerAttributeNames.LastName),
                        Address1 = customer.GetAttribute<string>(SystemCustomerAttributeNames.StreetAddress),
                        Address2 = customer.GetAttribute<string>(SystemCustomerAttributeNames.StreetAddress2)
                    };
                    if (this._addressService.IsAddressValid(defaultAddress))
                    {

                        //set default address
                        customer.Addresses.Add(defaultAddress);
                        _customerService.UpdateCustomer(customer);
                    }

                    ////notifications
                    //if (_customerSettings.NotifyNewCustomerRegistration)
                    //    _workflowMessageService.SendCustomerRegisteredNotificationMessage(customer, _localizationSettings.DefaultAdminLanguageId);

                    switch (_customerSettings.UserRegistrationType)
                    {
                        case UserRegistrationType.EmailValidation:
                            {
                                //email validation message
                                _genericAttributeService.SaveAttribute(customer, SystemCustomerAttributeNames.AccountActivationToken, Guid.NewGuid().ToString());
                                //_workflowMessageService.SendCustomerEmailValidationMessage(customer, _workContext.WorkingLanguage.Id);

                                //result
                                return RedirectToRoute("RegisterResult", new { resultId = (int)UserRegistrationType.EmailValidation });
                            }
                        case UserRegistrationType.AdminApproval:
                            {
                                return RedirectToRoute("RegisterResult", new { resultId = (int)UserRegistrationType.AdminApproval });
                            }
                        case UserRegistrationType.Standard:
                            {
                                //send customer welcome message
                                //_workflowMessageService.SendCustomerWelcomeMessage(customer, _workContext.WorkingLanguage.Id);

                                var redirectUrl = Url.RouteUrl("RegisterResult", new { resultId = (int)UserRegistrationType.Standard });
                                if (!String.IsNullOrEmpty(returnUrl) && Url.IsLocalUrl(returnUrl))
                                    redirectUrl = _webHelper.ModifyQueryString(redirectUrl, "returnurl=" + HttpUtility.UrlEncode(returnUrl), null);
                                return Redirect(redirectUrl);
                            }
                        default:
                            {
                                return RedirectToRoute("HomePage");
                            }
                    }
                }

                //errors
                foreach (var error in registrationResult.Errors)
                    ModelState.AddModelError("", error);
            }

            //If we got this far, something failed, redisplay form
               // PrepareCustomerRegisterModel(model, true, customerAttributesXml);
            return View(model);
        }
        /// <summary>
        /// Register customer
        /// </summary>
        /// <param name="request">Request</param>
        /// <returns>Result</returns>
        public virtual CustomerRegistrationResult RegisterCustomer(CustomerRegistrationRequest request)
        {
            if (request == null)
                throw new ArgumentNullException("request");

            if (request.Customer == null)
                throw new ArgumentException("Can't load current customer");

            var result = new CustomerRegistrationResult();
            if (request.Customer.IsSearchEngineAccount())
            {
                result.AddError("Search engine can't be registered");
                return result;
            }
            if (request.Customer.IsBackgroundTaskAccount())
            {
                result.AddError("Background task account can't be registered");
                return result;
            }
            if (request.Customer.IsRegistered())
            {
                result.AddError("Current customer is already registered");
                return result;
            }
            if (String.IsNullOrEmpty(request.Email))
            {
                result.AddError(_localizationService.GetResource("Account.Register.Errors.EmailIsNotProvided"));
                return result;
            }
            if (!CommonHelper.IsValidEmail(request.Email))
            {
                result.AddError(_localizationService.GetResource("Common.WrongEmail"));
                return result;
            }
            if (String.IsNullOrWhiteSpace(request.Password))
            {
                result.AddError(_localizationService.GetResource("Account.Register.Errors.PasswordIsNotProvided"));
                return result;
            }
            if (_customerSettings.UsernamesEnabled)
            {
                if (String.IsNullOrEmpty(request.Username))
                {
                    result.AddError(_localizationService.GetResource("Account.Register.Errors.UsernameIsNotProvided"));
                    return result;
                }
            }

            //validate unique user
            if (_customerService.GetCustomerByEmail(request.Email) != null)
            {
                result.AddError(_localizationService.GetResource("Account.Register.Errors.EmailAlreadyExists"));
                return result;
            }
            if (_customerSettings.UsernamesEnabled)
            {
                if (_customerService.GetCustomerByUsername(request.Username) != null)
                {
                    result.AddError(_localizationService.GetResource("Account.Register.Errors.UsernameAlreadyExists"));
                    return result;
                }
            }

            //at this point request is valid
            request.Customer.Username = request.Username;
            request.Customer.Email = request.Email;
            request.Customer.PasswordFormat = request.PasswordFormat;

            switch (request.PasswordFormat)
            {
                case PasswordFormat.Clear:
                    {
                        request.Customer.Password = request.Password;
                    }
                    break;
                case PasswordFormat.Encrypted:
                    {
                        request.Customer.Password = _encryptionService.EncryptText(request.Password);
                    }
                    break;
                case PasswordFormat.Hashed:
                    {
                        string saltKey = _encryptionService.CreateSaltKey(5);
                        request.Customer.PasswordSalt = saltKey;
                        request.Customer.Password = _encryptionService.CreatePasswordHash(request.Password, saltKey, _customerSettings.HashedPasswordFormat);
                    }
                    break;
                default:
                    break;
            }

            request.Customer.Active = request.IsApproved;

            //add to 'Registered' role
            var registeredRole = _customerService.GetCustomerRoleBySystemName(SystemCustomerRoleNames.Registered);
            if (registeredRole == null)
                throw new NopException("'Registered' role could not be loaded");
            request.Customer.CustomerRoles.Add(registeredRole);
            //remove from 'Guests' role
            var guestRole = request.Customer.CustomerRoles.FirstOrDefault(cr => cr.SystemName == SystemCustomerRoleNames.Guests);
            if (guestRole != null)
                request.Customer.CustomerRoles.Remove(guestRole);

            _customerService.UpdateCustomer(request.Customer);
            return result;
        }
        public virtual AuthorizationResult Authorize(OpenAuthenticationParameters parameters)
        {
            var userFound = _openAuthenticationService.GetUser(parameters);

            var userLoggedIn = _workContext.CurrentCustomer.IsRegistered() ? _workContext.CurrentCustomer : null;

            if (AccountAlreadyExists(userFound, userLoggedIn))
            {
                if (AccountIsAssignedToLoggedOnAccount(userFound, userLoggedIn))
                {
                    // The person is trying to log in as himself.. bit weird
                    return new AuthorizationResult(OpenAuthenticationStatus.Authenticated);
                }

                var result = new AuthorizationResult(OpenAuthenticationStatus.Error);
                result.AddError("Account is already assigned");
                return result;
            }
            if (AccountDoesNotExistAndUserIsNotLoggedOn(userFound, userLoggedIn))
            {
                ExternalAuthorizerHelper.StoreParametersForRoundTrip(parameters);

                if (AutoRegistrationIsEnabled())
                {
                    #region Register user

                    var currentCustomer = _workContext.CurrentCustomer;
                    var details = new RegistrationDetails(parameters);
                    var randomPassword = CommonHelper.GenerateRandomDigitCode(20);

                    bool isApproved =
                        //standard registration
                        (_customerSettings.UserRegistrationType == UserRegistrationType.Standard) ||
                        //skip email validation?
                        (_customerSettings.UserRegistrationType == UserRegistrationType.EmailValidation &&
                         !_externalAuthenticationSettings.RequireEmailValidation);

                    var registrationRequest = new CustomerRegistrationRequest(currentCustomer, details.EmailAddress,
                        _customerSettings.UsernamesEnabled ? details.UserName : details.EmailAddress, randomPassword, PasswordFormat.Clear, isApproved);
                    var registrationResult = _customerRegistrationService.RegisterCustomer(registrationRequest);
                    if (registrationResult.Success)
                    {

                        userFound = currentCustomer;
                        _openAuthenticationService.AssociateExternalAccountWithUser(currentCustomer, parameters);
                        ExternalAuthorizerHelper.RemoveParameters();

                        //code below is copied from CustomerController.Register method

                        //authenticate
                        if (isApproved)
                            _authenticationService.SignIn(userFound ?? userLoggedIn, false);

                        if (isApproved)
                        {
                            //standard registration
                            //or
                            //skip email validation

                            //result
                            return new AuthorizationResult(OpenAuthenticationStatus.AutoRegisteredStandard);
                        }
                        else if (_customerSettings.UserRegistrationType == UserRegistrationType.EmailValidation)
                        {

                            //result
                            return new AuthorizationResult(OpenAuthenticationStatus.AutoRegisteredEmailValidation);
                        }
                        else if (_customerSettings.UserRegistrationType == UserRegistrationType.AdminApproval)
                        {
                            //result
                            return new AuthorizationResult(OpenAuthenticationStatus.AutoRegisteredAdminApproval);
                        }
                    }
                    else
                    {
                        ExternalAuthorizerHelper.RemoveParameters();

                        var result = new AuthorizationResult(OpenAuthenticationStatus.Error);
                        foreach (var error in registrationResult.Errors)
                            result.AddError(string.Format(error));
                        return result;
                    }

                    #endregion
                }
                else if (RegistrationIsEnabled())
                {
                    return new AuthorizationResult(OpenAuthenticationStatus.AssociateOnLogon);
                }
                else
                {
                    ExternalAuthorizerHelper.RemoveParameters();

                    var result = new AuthorizationResult(OpenAuthenticationStatus.Error);
                    result.AddError("Registration is disabled");
                    return result;
                }
            }
            if (userFound == null)
            {
                _openAuthenticationService.AssociateExternalAccountWithUser(userLoggedIn, parameters);
            }

            //authenticate
            _authenticationService.SignIn(userFound ?? userLoggedIn, false);
            //activity log
            _customerActivityService.InsertActivity("PublicStore.Login", _localizationService.GetResource("ActivityLog.PublicStore.Login"),
                userFound ?? userLoggedIn);

            return new AuthorizationResult(OpenAuthenticationStatus.Authenticated);
        }