List Unread Petugas

public function listunreadpetugas_post()
    {
        $username = trim($this->post('username'));
        $level    = trim($this->post('level'));

        if ($username == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Username Kosong.',
            ];
        } else if ($level == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Level Kosong.',
            ];
        } else {
            $this->db->where('notifikasi_level', $level);
            $this->db->where('notifikasi_status', 1);
            $this->db->from('bpmppt_notifikasi');
            $total = $this->db->count_all_results();

            if ($total > 0) {
                $response = [
                    'resp_error' => false,
                    'jumlah'     => $total,
                ];
            } else {
                $response = [
                    'resp_error' => false,
                    'resp_msg'   => 'Tidak Ada Data Notifikasi.',
                ];
            }
        }

        $this->response($response, 200);
    }