private async Task SignInAsync(User user, bool isPersistent)
 {
     AuthenticationManager.SignOut(DefaultAuthenticationTypes.ExternalCookie);
     var identity = await UserManager.CreateIdentityAsync(user, DefaultAuthenticationTypes.ApplicationCookie);
     AuthenticationManager.SignIn(new AuthenticationProperties() { IsPersistent = isPersistent }, identity);
 }
        public async Task<ActionResult> Register(RegisterViewModel model, string returnUrl)
        {
            if (model.Password != model.ConfirmPassword)
            {
                ModelState.AddModelError("ConfirmPassword", "Пароль и Подтверждение пароля должны совпадать");
            }
            if (ModelState.IsValid)
            {
                User user = null;
                if (!string.IsNullOrWhiteSpace(model.DriverLicense))
                {
                    user = db.Users.FirstOrDefault(u => u.Licenses.Any(n => n.Number == model.DriverLicense && n.Type == LicenseType.Driver) && u.PasswordHash == null);
                }
                if (user==null && !string.IsNullOrWhiteSpace(model.MarchalLicense))
                {
                    user = db.Users.FirstOrDefault(u => u.Licenses.Any(n => n.Number == model.MarchalLicense && n.Type==LicenseType.Marchal) && u.PasswordHash == null);
                }

                if (user == null)
                {
                    user = new User()
                    {
                        UserName = model.UserName,
                        Address = model.Address,
                        BirthDate = model.BirthDate,
                        Email = model.Email,
                        FirstName = model.FirstName,
                        LastName = model.LastName,
                        Location = model.Location,
                        Passport = model.Passport,
                        Phone = model.Phone,
                        Licenses = new List<License>()
                    };

                    if (model.DriverLicense != null)
                    {
                        user.Licenses.Add(new License()
                        {
                            Number = model.DriverLicense,
                            Season = 2014,
                            IssuesOn = DateTime.Today
                        });
                    }

                    if (model.MarchalLicense != null)
                    {
                        user.Licenses.Add(new License()
                        {
                            Number = model.MarchalLicense,
                            Season = 2014,
                            IssuesOn = DateTime.Today,
                            Type = LicenseType.Marchal
                        });
                    }


                    var result = await UserManager.CreateAsync(user, model.Password);
                    if (result.Succeeded)
                    {
                        await SignInAsync(user, isPersistent: false);
                        if (string.IsNullOrWhiteSpace(returnUrl)) return Redirect("~/");
                        else return Redirect(returnUrl);
                    }
                    else
                    {
                        AddErrors(result);
                    }
                }
                else
                {
                    user.UserName = model.UserName;
                    await db.SaveChangesAsync();
                    var result = await UserManager.AddPasswordAsync(model.UserName, model.Password);
                    if (result.Succeeded)
                    {
                        await SignInAsync(user, isPersistent: false);
                        if (string.IsNullOrWhiteSpace(returnUrl)) return Redirect("~/");
                        else return Redirect(returnUrl);
                    }
                    else
                    {
                        AddErrors(result);
                    }
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }
        public async Task<ActionResult> ExternalLoginConfirmation(ExternalLoginConfirmationViewModel model, string returnUrl)
        {
            if (User.Identity.IsAuthenticated)
            {
                return RedirectToAction("Manage");
            }

            if (ModelState.IsValid)
            {
                // Get the information about the user from the external login provider
                var info = await AuthenticationManager.GetExternalLoginInfoAsync();
                if (info == null)
                {
                    return View("ExternalLoginFailure");
                }
                var user = new User() {
                    UserName = model.UserName,
                    Address = model.Address,
                    BirthDate = model.BirthDate,
                    Email = model.Email,
                    FirstName = model.FirstName,
                    LastName = model.LastName,
                    Location = model.Location,
                    Passport = model.Passport,
                    Phone = model.Phone,
                    Licenses = new List<License>()
                };                

                var result = await UserManager.CreateAsync(user);
                if (result.Succeeded)
                {
                    result = await UserManager.AddLoginAsync(user.Id, info.Login);
                    if (result.Succeeded)
                    {
                        await SignInAsync(user, isPersistent: false);
                        return RedirectToLocal(returnUrl);
                    }
                }
                AddErrors(result);
            }

            ViewBag.ReturnUrl = returnUrl;
            return View(model);
        }