module HNBGW_ConnectionHandler {

/* HNBGW Connection Handler of HNB_Tests in TTCN-3
 * (C) 2021 by sysmocom - s.m.f.c. GmbH <info@sysmocom.de>
 * All rights reserved.
 *
 * Released under the terms of GNU General Public License, Version 2 or
 * (at your option) any later version.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

import from Misc_Helpers all;
import from General_Types all;
import from Osmocom_Types all;
import from IPL4asp_Types all;
import from Native_Functions all;

import from SDP_Types all;

import from StatsD_Checker all;

import from TELNETasp_PortType all;
import from Osmocom_VTY_Functions all;

import from HNBAP_Templates all;

import from Iuh_Emulation all;

/* this component represents a single Iuh connection at the HNBGW. */
type component HNBGW_ConnHdlr extends StatsD_ConnHdlr {
	port TELNETasp_PT HNBVTY;
	port HNBAP_PT HNBAP;
	port RUA_PT RUA;
	var TestHdlrParams g_pars;

	var boolean g_vty_initialized := false;
}

function f_HNBGW_ConnHdlr_init_vty() runs on HNBGW_ConnHdlr {
	if (not g_vty_initialized) {
		map(self:HNBVTY, system:HNBVTY);
		f_vty_set_prompts(HNBVTY);
		f_vty_transceive(HNBVTY, "enable");
		g_vty_initialized := true;
	}
}

/* initialize all parameters */
function f_HNBGW_ConnHdlr_init(TestHdlrParams pars) runs on HNBGW_ConnHdlr {
	var integer i := 0;
	var Iuh_Emulation_CT vc_Iuh;

	g_pars := valueof(pars);
	vc_Iuh := Iuh_Emulation_CT.create("HNBGW" & int2str(i));
	connect(self:HNBAP, vc_Iuh:HNBAP);
	connect(self:RUA, vc_Iuh:RUA);

	var Iuh_conn_parameters iuh_pars;
	iuh_pars.remote_ip := g_pars.hnodeb_addr;
	iuh_pars.remote_sctp_port := -1;
	iuh_pars.local_ip := g_pars.hnbgw_addr;
	iuh_pars.local_sctp_port  := g_pars.hnbgw_port;
	vc_Iuh.start(Iuh_Emulation.main(iuh_pars, "Iuh" & int2str(i)));

	f_HNBGW_ConnHdlr_init_vty();
}

type record TestHdlrParams {
	charstring hnbgw_addr,
	charstring hnodeb_addr,
	integer hnbgw_port,
	uint16_t rnc_id,
	charstring hNB_Identity_Info,
	OCT3 plmnid,
	uint32_t cell_identity,
	uint16_t lac,
	uint8_t rac,
	uint8_t sac
};

/* Note: Do not use valueof() to get a value of this template, use
 * f_gen_test_hdlr_pars() instead in order to get a configuration. */
template (value) TestHdlrParams t_def_TestHdlrPars := {
	hnbgw_addr := "127.0.0.1",
	hnodeb_addr := "127.0.0.1",
	hnbgw_port := 29169,
	rnc_id := 23,
	hNB_Identity_Info := "OsmoHNodeB",
	plmnid := '00F110'O,
	cell_identity := 1,
	lac := 2,
	rac := 3,
	sac := 4
}


function f_handle_hnbap_hnb_register_req()
runs on HNBGW_ConnHdlr {
	HNBAP.receive(tr_HNBAP_HNBRegisterRequest(char2oct(g_pars.hNB_Identity_Info),
						  g_pars.plmnid,
						  int2bit(g_pars.cell_identity, 28),
						  int2oct(g_pars.lac, 2),
						  int2oct(g_pars.rac, 1),
						  int2oct(g_pars.sac, 2)
						 ));
	HNBAP.send(ts_HNBAP_HNBRegisterAccept(g_pars.rnc_id));
}


}