public bool Login(Account account)
        {
            try
            {
                using (var context = new EntityContext())
                {
                    var user = context.Account.SingleOrDefault(x => x.userID == account.userID);
                    if (user != null)
                    {
                        user.sessionExpiresAt = account.sessionExpiresAt;
                        user.sessionID = account.sessionID;
                    }
                    else
                    {
                        context.Account.Add(account);
                    }
                    context.SaveChanges();

                    return true;
                }
            }
            catch(Exception ex)
            {
                return false;
            }
        }
        public ActionResult Login(Account account)
        {
            var sessionID = Guid.NewGuid();
            var sessionExpiresAt = DateTime.Now.AddHours(5);
            account.sessionID = sessionID;
            account.sessionExpiresAt = sessionExpiresAt;

            var accountService = new AccountService();
            if (accountService.Login(account))
            {
                var sessionCookie = new HttpCookie("SESSION_ID")
                {
                    Value = sessionID.ToString(),
                    Expires = sessionExpiresAt
                };

                Response.Cookies.Add(sessionCookie);
                var redirectURI = Url.Action("Index");
                return Json(new { redirect = redirectURI });
            }

            return new HttpStatusCodeResult((int)HttpStatusCode.InternalServerError);
        }