cek SSO

public function cek_sso()
    {
        $return     = NULL;
        $href_sso   = '?ref=' . encrypt(current_url());
        $href_sso   = 'https://kepegawaian-bkpsdm.kuduskab.go.id/sso' . $href_sso;
        $CI         = &get_instance();
        $get_cookie = get_cookie('sso');

        // If the SSO cookie exists
        if ($get_cookie !== NULL) {
            $data   = dekrip($get_cookie) . '||' . $CI->input->ip_address() . '-' . $CI->agent->agent_string();
            $get    = apiku([
                'url'       => 'https://kepegawaian-bkpsdm.kuduskab.go.id/sso/api/token_sso/verify',
                'header'    => ["Content-Type: application/x-www-form-urlencoded", "key: ssobkpsdm"],
                'post'      => 'token=' . encrypt($data),
            ]);

            // If verification fails, redirect to SSO
            if ($get['resp_error'] === TRUE) {
                redirect($href_sso, 'location');
            } else {
                // Set session data on successful verification
                $user_data  = $CI->mdl->getdata('v_u_users', "id_user='" . $get['data']['user_id'] . "'")->row();
                $level      = $CI->mdl->getdata('tbl_level', "id_level='" . $user_data->id_level . "'")->row();

                $CI->session->set_userdata([
                    'data'  => encrypt_data($user_data),
                    'level' => encrypt_data($level),
                    'h'     => encrypt(appproperties('appname')),
                ]);

                // Refresh the SSO cookie
                set_cookie([
                    'name'      => 'sso',
                    'value'     => encrypt(decrypt($get_cookie)),
                    'domain'    => 'kepegawaian-bkpsdm.kuduskab.go.id',
                    'expire'    => 900, // 15 minutes
                    'secure'    => TRUE,
                    'httponly'  => TRUE
                ]);

                $return = $get;
            }
        } else {
            redirect($href_sso, 'location');
        }

        return $return;
    }