public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            var userId = db.Users.Where(x => x.Email == model.Email).Select(x => x.Id).FirstOrDefault();
            if (String.IsNullOrWhiteSpace(userId))
                return View(model);
            var userProfile = (from u in db.Users
                               where u.Id == userId
                               select u.ActivationCode).FirstOrDefault();

            var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout: false);
            if (result.ToString() == "Success")
            {
                Session["AccountInfo"] = userId;
                var RolesForUser = await UserManager.GetRolesAsync(userId);
                string password = db.Users.Where(x => x.Email == model.Email)
                                     .Select(x => x.PasswordHash)
                                     .Single();
                bool passwordMatches = Crypto.VerifyHashedPassword(password, model.Password);

                string requestedUrl = Session["InitialRequest"] as string;

                // string requestedUrl = returnUrl;
                if (userId != null && passwordMatches == true)
                {
                    switch (RolesForUser[0].ToString())
                    {
                        case "Supplier":
                            if (userProfile != null)
                            {
                                return RedirectToAction("ActivateAccount");
                            }
                            if (String.IsNullOrWhiteSpace(returnUrl))
                            {
                                return RedirectToAction("Index", "Supplier");
                            }
                            return Redirect(returnUrl);

                        case "Admin":
                            return RedirectToAction("Index", "Admin");

                        case "Customer":
                            if (userProfile != null)
                            {
                                return RedirectToAction("ActivateAccount", "Account");
                            }

                            if (String.IsNullOrWhiteSpace(returnUrl))
                            {
                                return RedirectToAction("Index", "Customer");
                            }

                            //if (pendingUser.ActivationCode != null)
                            //{
                            //    return RedirectToAction("ActivateAccount", "Account");
                            //}
                            return Redirect(returnUrl);
                    }
                    return RedirectToAction("ActivateAccount", "Account");
                }
            }

            switch (result)
            {
                case SignInStatus.LockedOut:
                    return View("Lockout");

                case SignInStatus.RequiresVerification:
                    return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe });

                case SignInStatus.Failure:
                default:
                    ModelState.AddModelError("", "Invalid login attempt.");
                    return View(model);
            }
        }
        public async Task<ActionResult> LoginSupplier(LoginViewModel model, string returnUrl)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            // This doesn't count login failures towards account lockout
            // To enable password failures to trigger account lockout, change to shouldLockout: true
            var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout: false);
            switch (result)
            {
                case SignInStatus.Success:
                    return RedirectToAction("Index", "Supplier");

                case SignInStatus.LockedOut:
                    return View("Lockout");

                case SignInStatus.RequiresVerification:
                    return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = model.RememberMe });

                case SignInStatus.Failure:
                default:
                    ModelState.AddModelError("", "Invalid login attempt.");
                    return View(model);
            }
        }