public async Task <ActionResult> IzmeniProfil()
        {
            var user = await UserManager.FindByIdAsync(User.Identity.GetUserId());

            if (user == null)
            {
                // Ne otkrivaj da korisnik ne postoji
                return(View("Error"));
            }

            var model = new AccountModifyModel
            {
                UserName              = user.UserName,
                Email                 = user.Email,
                FirstName             = user.FirstName,
                LastName              = user.LastName,
                DateRegistered        = user.DateRegistered,
                CurrentProfilePicture = user.ProfilePicture,
                HasPassword           = await UserManager.HasPasswordAsync(user.Id)
            };

            return(View(model));
        }
        public async Task <ActionResult> IzmeniProfil(AccountModifyModel model)
        {
            if (ModelState.IsValid)
            {
                AppUser user = await UserManager.FindByIdAsync(User.Identity.GetUserId());

                if (user != null)
                {
                    user.FirstName = model.FirstName;
                    user.LastName  = model.LastName;
                    user.UserName  = model.UserName;

                    if (model.NewProfilePicture != null)
                    {
                        user.ProfilePicture = model.NewProfilePicture.ToByteArray();
                    }

                    var updateResult = await UserManager.UpdateAsync(user);

                    var emailUpdateResult = await UserManager.SetEmailAsync(user.Id, model.Email);

                    if (updateResult.Succeeded && emailUpdateResult.Succeeded)
                    {
                        AuthManager.SignOut();
                        await SignInManager.SignInAsync(user, isPersistent : true, rememberBrowser : false);

                        TempData["Success"] = "Izmene uspesno sacuvane!";
                        return(RedirectToAction("IzmeniProfil"));
                    }

                    AddErrorsFromResult(string.Empty, updateResult, emailUpdateResult);
                }
                ModelState.AddModelError(string.Empty, "Doslo je do greske, pokušajte ponovo.");
            }
            return(View(model));
        }