public async Task Index()

in src/Web/Controllers/ManageController.cs [92:180]
78 lines of code
4 McCabe index (conditional complexity)

        public async Task<IActionResult> Index(IndexViewModel model)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            var user = await _userManager.GetUserAsync(User);
            if (user == null)
            {
                throw new ApplicationException($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
            }

            // Update the Application User
            user.FirstName = model.User.FirstName;
            user.LastName = model.User.LastName;
            user.Email = model.User.Email;
            user.UserName = model.Username;
            user.PhoneNumber = model.User.Phone;
            user.Address1 = model.Address.Address1;
            user.Address2 = model.Address.Address2;
            user.City = model.Address.City;
            user.State = model.Address.State;
            user.ZipCode = model.Address.ZipCode;
            user.CountryRegion = model.Address.CountryRegion;

            var result = await _userManager.UpdateAsync(user);

            #region Fraud Protection Service
            // If storing the user locally succeeds, update Fraud Protection
            if (result.Succeeded)
            {
                var billingAddress = new UserAddress
                {
                    Type = UserAddressType.Billing.ToString(),
                    FirstName = user.FirstName,
                    LastName = user.LastName,
                    Street1 = user.Address1,
                    Street2 = user.Address2,
                    City = user.City,
                    State = user.State,
                    ZipCode = user.ZipCode,
                    Country = user.CountryRegion
                };

                var shippingAddress = new UserAddress
                {
                    Type = UserAddressType.Shipping.ToString(),
                    FirstName = user.FirstName,
                    LastName = user.LastName,
                    Street1 = user.Address1,
                    Street2 = user.Address2,
                    City = user.City,
                    State = user.State,
                    ZipCode = user.ZipCode,
                    Country = user.CountryRegion
                };

                var fraudProtectionUser = new User
                {
                    UserId = user.Email,
                    UpdateDate = DateTimeOffset.Now,
                    Email = user.Email,
                    FirstName = user.FirstName,
                    LastName = user.LastName,
                    PhoneNumber = user.PhoneNumber,
                    AddressList = new List<UserAddress> { billingAddress, shippingAddress },
                    ZipCode = user.ZipCode,
                    Country = user.CountryRegion,
                    TimeZone = new TimeSpan(0, 0, -model.DeviceFingerPrinting.ClientTimeZone, 0).ToString(),
                    DeviceContext = new DeviceContext
                    {
                        DeviceContextId = _contextAccessor.GetSessionId(),
                        IPAddress = _contextAccessor.HttpContext.Connection.RemoteIpAddress.ToString(),
                        Provider = DeviceContextProvider.DFPFingerPrinting.ToString()
                    }
                };

                var correlationId = _fraudProtectionService.NewCorrelationId;
                var response = await _fraudProtectionService.PostUser(fraudProtectionUser, correlationId);

                var fraudProtectionIO = new FraudProtectionIOModel(correlationId, fraudProtectionUser, response, "UpdateAccount");
                TempData.Put(FraudProtectionIOModel.TempDataKey, fraudProtectionIO);
            }
            #endregion

            StatusMessage = "Your profile has been updated";
            return RedirectToAction(nameof(Index));
        }