public function index()
     {

         if($this->session->userdata('username')) {
             redirect('dashboard');
         }
         $this->form_validation->set_rules('username','Username', 'required|trim', ['required' => 'There is still an empty column']);
         $this->form_validation->set_rules('password','Password', 'required|trim', ['required' => 'There is still an empty column']);

         if($this->form_validation->run() == false) {
             $info = $this->db->get_where('website', ['id' => 1])->row_array();
             $data['title'] = $info['name'];
             $this->load->view('auth/login', $data);
         } else {
             $this->logins();
         }
     }

     private function logins()
     {
         $username = htmlspecialchars($this->input->post('username', true));
         $password = htmlspecialchars($this->input->post('password', true));

         $cek_user = $this->db->get_where('users', ['username' => $username])->row_array();


         if($cek_user) {
             if($cek_user['status'] == "Active") {
                 if(password_verify($password, $cek_user['password'])) {
                     $session = [
                            'username' => $cek_user['username'],
                            'name' => $cek_user['name'],
                            'balance' => $cek_user['balance'],
                            'level' => $cek_user['level'],
                            'token_key' => $cek_user['token_key']
                         ];

                         $this->session->set_userdata($session);
                         $this->session->set_flashdata('success_msg', 'Congratulation Your Success Login');
                         redirect('dashboard');
                 } else {
                     $this->session->set_flashdata('error_msg', 'Wrong Password');
                     redirect('auth');
                 }
             } else {
                 $this->session->set_flashdata('error_msg', 'Your Account Has Ben Suspenned');
                 redirect('auth');
             }
         } else {
             $this->session->set_flashdata('error_msg', 'Account Not Registered');
             redirect('auth');
         }
     }