/// <summary>
        /// Register user
        /// </summary>
        /// <param name="request">Request</param>
        /// <returns>Result</returns>
        public virtual UserRegistrationResult RegisterUser(UserRegistrationRequest request)
        {
            if (request == null)
            {
                throw new ArgumentNullException("request");
            }

            if (request.User == null)
            {
                throw new ArgumentException("Can't load current user");
            }

            var result = new UserRegistrationResult();

            //if (request.User.IsSearchEngineAccount())
            //{
            //    result.AddError("Search engine can't be registered");
            //    return result;
            //}
            //if (request.User.IsBackgroundTaskAccount())
            //{
            //    result.AddError("Background task account can't be registered");
            //    return result;
            //}
            if (request.User.IsRegistered())
            {
                result.AddError("Current user 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 (_userSettings.UsernamesEnabled)
            {
                if (String.IsNullOrEmpty(request.Username))
                {
                    result.AddError(_localizationService.GetResource("Account.Register.Errors.UsernameIsNotProvided"));
                    return(result);
                }
            }

            //validate unique user
            if (_userService.GetUserByEmail(request.Email) != null)
            {
                result.AddError(_localizationService.GetResource("Account.Register.Errors.EmailAlreadyExists"));
                return(result);
            }
            if (_userSettings.UsernamesEnabled)
            {
                if (_userService.GetUserByUsername(request.Username) != null)
                {
                    result.AddError(_localizationService.GetResource("Account.Register.Errors.UsernameAlreadyExists"));
                    return(result);
                }
            }

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

            var userPassword = new UserPassword
            {
                User           = request.User,
                PasswordFormat = request.PasswordFormat,
                CreatedOnUtc   = DateTime.UtcNow
            };

            switch (request.PasswordFormat)
            {
            case PasswordFormat.Clear:
                userPassword.Password = request.Password;
                break;

            case PasswordFormat.Encrypted:
                userPassword.Password = _encryptionService.EncryptText(request.Password);
                break;

            case PasswordFormat.Hashed:
            {
                var saltKey = _encryptionService.CreateSaltKey(5);
                userPassword.PasswordSalt = saltKey;
                userPassword.Password     = _encryptionService.CreatePasswordHash(request.Password, saltKey, _userSettings.HashedPasswordFormat);
            }
            break;
            }
            _userService.InsertUserPassword(userPassword);

            request.User.Active = request.IsApproved;

            //add to 'Registered' role
            var registeredRole = _userService.GetUserRoleBySystemName(SystemUserRoleNames.Registered);

            if (registeredRole == null)
            {
                throw new NopException("'Registered' role could not be loaded");
            }
            request.User.UserRoles.Add(registeredRole);
            //remove from 'Guests' role
            var guestRole = request.User.UserRoles.FirstOrDefault(cr => cr.SystemName == SystemUserRoleNames.Guests);

            if (guestRole != null)
            {
                request.User.UserRoles.Remove(guestRole);
            }


            _userService.UpdateUser(request.User);

            //publish event
            _eventPublisher.Publish(new UserPasswordChangedEvent(userPassword));

            return(result);
        }
        /// <summary>
        /// Register user
        /// </summary>
        /// <param name="request">Request</param>
        /// <returns>Result</returns>
        public virtual UserRegistrationResult RegisterUser(UserRegistrationRequest request)
        {
            if (request == null)
            {
                throw new ArgumentNullException(nameof(request));
            }

            if (request.User == null)
            {
                throw new ArgumentException("Can't load current user");
            }

            var result = new UserRegistrationResult();

            if (request.User.IsSearchEngineAccount())
            {
                result.AddError("Search engine can't be registered");
                return(result);
            }
            if (request.User.IsBackgroundTaskAccount())
            {
                result.AddError("Background task account can't be registered");
                return(result);
            }
            if (request.User.IsRegistered())
            {
                result.AddError("Current user is already registered");
                return(result);
            }
            if (string.IsNullOrEmpty(request.Email))
            {
                result.AddError("Email is required.");
                return(result);
            }
            if (!CommonHelper.IsValidEmail(request.Email))
            {
                result.AddError("Wrong email");
                return(result);
            }
            if (string.IsNullOrWhiteSpace(request.Password))
            {
                result.AddError("Password is not provided");
                return(result);
            }
            if (_userSettings.UsernamesEnabled)
            {
                if (string.IsNullOrEmpty(request.Username))
                {
                    result.AddError("Username is required.");
                    return(result);
                }
            }

            //validate unique user
            if (_userService.GetUserByEmail(request.Email) != null)
            {
                result.AddError("The specified email already exists");
                return(result);
            }
            if (_userSettings.UsernamesEnabled)
            {
                if (_userService.GetUserByUsername(request.Username) != null)
                {
                    result.AddError("The specified username already exists");
                    return(result);
                }
            }

            //at this point request is valid
            request.User.Username = request.Username;
            request.User.Email    = request.Email;
            request.User.Phone    = request.Phone;

            var userPassword = new UserPassword
            {
                User           = request.User,
                PasswordFormat = request.PasswordFormat,
                CreatedOn      = DateTime.Now
            };

            switch (request.PasswordFormat)
            {
            case PasswordFormat.Clear:
                userPassword.Password = request.Password;
                break;

            case PasswordFormat.Encrypted:
                userPassword.Password = _encryptionService.EncryptText(request.Password);
                break;

            case PasswordFormat.Hashed:
            {
                var saltKey = _encryptionService.CreateSaltKey(SALT_KEY_SIZE);
                userPassword.PasswordSalt = saltKey;
                userPassword.Password     = _encryptionService.CreatePasswordHash(request.Password, saltKey, _userSettings.HashedPasswordFormat);
            }
            break;
            }
            _userService.InsertUserPassword(userPassword);

            request.User.Active = request.IsApproved;

            //add to 'Registered' role
            var registeredRole = _userService.GetUserRoleBySystemName(SystemUserRoleNames.Registered);

            if (registeredRole == null)
            {
                throw new NopException("'Registered' role could not be loaded");
            }
            //request.User.UserRoles.Add(registeredRole);
            request.User.UserUserRoleMappings.Add(new UserUserRoleMapping {
                UserRole = registeredRole
            });
            //remove from 'Guests' role
            var guestRole = request.User.UserRoles.FirstOrDefault(cr => cr.SystemName == SystemUserRoleNames.Guests);

            if (guestRole != null)
            {
                //request.User.UserRoles.Remove(guestRole);
                request.User.UserUserRoleMappings
                .Remove(request.User.UserUserRoleMappings.FirstOrDefault(mapping => mapping.UserRoleId == guestRole.Id));
            }

            _userService.UpdateUser(request.User);

            return(result);
        }