[HttpGet]
    public ActionResult LogIn()
    {
        return View();
    }

    [HttpPost]
    public ActionResult LogIn(Models.User user)
    {
        if (IsValid(user.Email, user.Password))
        {
            FormsAuthentication.SetAuthCookie(user.Email, false);
            return RedirectToAction("Index", "Home");
        }
        else
        {
            ModelState.AddModelError("", "Login details are wrong.");
        }
        return View(user);
    }

    [HttpGet]
    public ActionResult Register()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Register(Models.User user)
    {
        try
        {

            if (ModelState.IsValid)
            {
                using (AppContext db = new AppContext())
                {
                    var crypto = new SimpleCrypto.PBKDF2();
                    var encrypPass = crypto.Compute(user.Password);

                    var newUser = db.Users.Create();
                    newUser.FirstName = user.FirstName;
                    newUser.LastName = user.LastName;
                    newUser.Email = user.Email;
                    newUser.CompanyName = user.CompanyName;
                    newUser.Password = encrypPass;
                    newUser.PasswordSalt = crypto.Salt;
                    newUser.AdminCode = 0;
                    user.Password = encrypPass;
                    user.PasswordSalt = crypto.Salt;

                    db.Users.Add(newUser);
                    db.SaveChanges();
                    return RedirectToAction("Index", "Home");

                }
            }
            else
            {
                ModelState.AddModelError("", "Data is not correct");
            }
        }
        catch (DbEntityValidationException e)
        {
            foreach (var validationErrors in e.EntityValidationErrors)
            {
                foreach (var validationError in validationErrors.ValidationErrors)
                {
                    Trace.TraceInformation(
                          "Class: {0}, Property: {1}, Error: {2}",
                          validationErrors.Entry.Entity.GetType().FullName,
                          validationError.PropertyName,
                          validationError.ErrorMessage);
                }
            }
        }
        return View();
    }

    private bool IsValid(string email, string password)
    {
        var crypto = new SimpleCrypto.PBKDF2();
        bool IsValid = false;

        using (AppContext db = new AppContext())
        {
            var user = db.Users.FirstOrDefault(u => u.Email == email);
            if (user != null)
            {
                if (user.Password == crypto.Compute(user.PasswordSalt, password))
                {
                    IsValid = true;
                }
            }
        }
        return IsValid;
    }

    public ActionResult LogOut()
    {
        FormsAuthentication.SignOut();
        return RedirectToAction("Index", "Home");
    }
}