public async Task AddUserAsync(UserDTO user)
{
if (_userStorageContainer == null)
{
_userStorageContainer = new UserStorageContainer();
}
if ( user.Id == 0 )
{
var lastUser = _userStorageContainer.Users.OrderBy(x => x.Id).LastOrDefault() ?? new UserDTO();
user.Id = lastUser.Id + 1;
if ( user.ImageBytes == null || !user.ImageBytes.Any())
{
user.ImageBytes = await GetGuestSilhouetteImageBytesAsync();
}
_userStorageContainer.Users.Add(user);
}
else
{
var foundUser = _userStorageContainer.Users.FirstOrDefault(x => x.Id == user.Id);
if (foundUser == null )
{
_userStorageContainer.Users.Add(user);
}
else
{
var index = _userStorageContainer.Users.IndexOf(foundUser);
_userStorageContainer.Users[index] = user;
}
}
_usersStorageHelper.SaveASync(_userStorageContainer, UsersStorageFileName);
}
private async Task CreateNewGuestSilhouetteAsync()
{
try
{
var bytes = await GetGuestSilhouetteImageBytesAsync();
var guestUser = new UserDTO
{
Id = 1,
UserName = UserConstants.GuestSilhouetteUserName,
ImageName = UserConstants.GuestSilhouetteImageName,
ImageBytes = bytes
};
AddUserAsync(guestUser);
}
catch (Exception e)
{
var m = e.Message;
throw;
}
}
public UsersViewModel( UserDTO user )
{
_user = user;
}