public async Task <User> Login(string userName, string password)
{
var user = await DataContext.Users.FirstOrDefaultAsync(x => x.UserName.ToLower() == userName.ToLower());
if (user == null)
{
return(null);
}
if (!HashingPassword.checkPassword(password, user.PasswordHash, user.PasswordSalt))
{
return(null);
}
return(user);
}