public async Task <User> Authenticate(string username, string password)
{
if (string.IsNullOrEmpty(username) || string.IsNullOrEmpty(password))
{
return(null);
}
var user = await _context.GetuserByUsername(username);
if (user == null)
{
return(null);
}
if (password != user.Password)
{
return(null);
}
user.Token = GenerarToken(user);
user.Password = null;
return(user);
}