private async void AddNewPersonDialog()

in FamilyNotes/MainPage.xaml.cs [302:349]
35 lines of code
6 McCabe index (conditional complexity)

        private async void AddNewPersonDialog(Person currentPerson)
        {
            var dialog = new AddPersonContentDialog();

            dialog.ProvideExistingPerson(currentPerson);
            await dialog.ShowAsync();
            Person newPerson = dialog.AddedPerson;

            // If there is a valid person to add, add them.
            if (newPerson != null)
            {
                // Get or create a directory for the user (we do this regardless of whether or not there is a profile picture).
                StorageFolder userFolder = await ApplicationData.Current.LocalFolder.CreateFolderAsync(("Users\\" + newPerson.FriendlyName), CreationCollisionOption.OpenIfExists);

                // See if we have a profile photo.
                if (dialog.TemporaryFile != null)
                {
                    // Save off the profile photo and delete the temporary file.
                    await dialog.TemporaryFile.CopyAsync(userFolder, "ProfilePhoto.jpg", NameCollisionOption.ReplaceExisting);
                    await dialog.TemporaryFile.DeleteAsync();

                    // Update the profile picture for the person.
                    newPerson.IsProfileImage = true;
                    newPerson.ImageFileName = userFolder.Path + "\\ProfilePhoto.jpg";

                    if (AppSettings.FaceApiKey != "")
                    {
                        await FacialSimilarity.AddTrainingImageAsync(newPerson.FriendlyName, new Uri($"ms-appdata:///local/Users/{newPerson.FriendlyName}/ProfilePhoto.jpg"));
                    }
                }
                // Add the user if it is new now that changes have been made.
                if (currentPerson == null)
                {
                    await FamilyModel.AddPersonAsync(newPerson);
                }
                // Otherwise we had a user, so update the current one.
                else
                {
                    //await FamilyModel.UpdatePersonImageAsync(newPerson);
                    Person personToUpdate = FamilyModel.PersonFromName(currentPerson.FriendlyName);
                    if (personToUpdate != null)
                    {
                        personToUpdate.IsProfileImage = true;
                        personToUpdate.ImageFileName = userFolder.Path + "\\ProfilePhoto.jpg";
                    }
                }
            }
        }