Balas Ticket SIMPEL

public function balasticket_post()
    {
        $username  = trim($this->post('username'));
        $nama      = trim($this->post('nama'));
        $level     = trim($this->post('level'));
        $ticket_id = trim($this->post('ticket_id'));
        $pesan     = trim($this->post('pesan'));

        if ($username == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Username kosong.',
            ];
        } elseif ($ticket_id == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'ID Ticket kosong.',
            ];
        } else {
            if (!empty($_FILES['attachment']['name'])) {
                $jam                     = time();
                $config['file_name']     = 'Ticket_' . $jam . '.jpg';
                $config['upload_path']   = './img/image_ticket/';
                $config['allowed_types'] = 'jpg|png|gif|jpeg';
                $config['overwrite']     = true;
                $this->load->library('upload', $config);
                $this->upload->do_upload('attachment');
                $config['image_library']  = 'gd2';
                $config['source_image']   = $this->upload->upload_path . $this->upload->file_name;
                $config['maintain_ratio'] = true;
                $this->load->library('image_lib', $config);
                $this->image_lib->resize();
            } elseif (empty($_FILES['attachment']['name'])) {
                $config['file_name'] = '';
            }

            if ($level == 'Member') {
                $message       = $pesan;
                $ticket_status = 'Member-reply';
                $detail_level  = 'Member';
            } else {
                $ticket_status = 'Answered';
                $detail_level  = 'Petugas';
                // Insert ke Tabel Ticket
                $dataTicket = $this->db->get_where('v_ticket', array('ticket_id' => $ticket_id))->row();
                $footer     = $this->db->get_where('lemlit_content', array('content_id' => 3))->row();
                $dataFooter = $footer->content_desc;
                // Kirim Email
                $sender_email = 'no-reply.simpel@umk.ac.id';
                $sender_name  = 'no-reply';
                $subject      = '[Ticket ID : #' . $ticket_id . ' ] ' . $dataTicket->ticket_subject;
                $email        = $dataTicket->user_email;
                $message      = "Halo, <br><br>" . $pesan . "<p>Terima Kasih<br><br>Hormat Kami,<br>" . $nama . "<br>" . $level . "<br>" . $dataFooter . "</p>";

                $this->load->library('email');
                $this->email->set_mailtype("html");
                $this->email->from($sender_email, $sender_name);
                $this->email->to($email);
                $this->email->subject($subject);
                $this->email->message($message);
                $this->email->send();
            }

            // Update Ticket
            $dataUpdateTicket = array(
                'user_username' => $username,
                'ticket_status' => $ticket_status,
                'ticket_update' => date('Y-m-d H:i:s'),
            );

            $this->db->where('ticket_id', $ticket_id);
            $this->db->update('lemlit_ticket', $dataUpdateTicket);

            // Insert ke Detail Ticket
            if (!empty($_FILES['attachment']['name'])) {
                $dataDetail = array(
                    'ticket_id'        => $ticket_id,
                    'user_username'    => $username,
                    'detail_level'     => $detail_level,
                    'detail_message'   => $message,
                    'detail_image'     => $this->upload->file_name,
                    'detail_date_post' => date('Y-m-d'),
                    'detail_time_post' => date('Y-m-d H:i:s'),
                );
            } else {
                $dataDetail = array(
                    'ticket_id'        => $ticket_id,
                    'user_username'    => $username,
                    'detail_level'     => $detail_level,
                    'detail_message'   => $message,
                    'detail_date_post' => date('Y-m-d'),
                    'detail_time_post' => date('Y-m-d H:i:s'),
                );
            }

            $this->db->insert('lemlit_ticket_detail', $dataDetail);

            $resp = ['resp_error' => false, 'resp_msg' => "success"];
        }

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