/*
 *
 *  oFono - Open Source Telephony
 *
 *  Copyright (C) 2008-2009  Intel Corporation. All rights reserved.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#include <glib.h>
#include <gatchat.h>

#define OFONO_API_SUBJECT_TO_CHANGE
#include <ofono/plugin.h>
#include <ofono/log.h>
#include <ofono/modem.h>
#include <ofono/call-barring.h>
#include <ofono/call-forwarding.h>
#include <ofono/call-meter.h>
#include <ofono/call-settings.h>
#include <ofono/devinfo.h>
#include <ofono/message-waiting.h>
#include <ofono/netreg.h>
#include <ofono/phonebook.h>
#include <ofono/sim.h>
#include <ofono/sms.h>
#include <ofono/ssn.h>
#include <ofono/ussd.h>
#include <ofono/voicecall.h>

static int phonesim_probe(struct ofono_modem *modem)
{
	return 0;
}

static void phonesim_remove(struct ofono_modem *modem)
{
}

static void phonesim_debug(const char *str, void *user_data)
{
	ofono_info("%s", str);
}

static int phonesim_enable(struct ofono_modem *modem)
{
	GIOChannel *io;
	GAtChat *chat;
	GAtSyntax *syntax;
	struct sockaddr_in addr;
	const char *address;
	int sk, err, port;

	DBG("%p", modem);

	address = ofono_modem_get_string(modem, "Address");
	if (!address)
		return -EINVAL;

	port = ofono_modem_get_integer(modem, "Port");
	if (port < 0)
		return -EINVAL;

	sk = socket(PF_INET, SOCK_STREAM, 0);
	if (sk < 0)
		return -EINVAL;

	memset(&addr, 0, sizeof(addr));
	addr.sin_family = AF_INET;
	addr.sin_addr.s_addr = inet_addr(address);
	addr.sin_port = htons(port);

	err = connect(sk, (struct sockaddr *) &addr, sizeof(addr));
	if (err < 0) {
		close(sk);
		return err;
	}

	io = g_io_channel_unix_new(sk);
	if (!io) {
		close(sk);
		return -ENOMEM;
	}

	syntax = g_at_syntax_new_gsmv1();
	chat = g_at_chat_new(io, syntax);
	g_at_syntax_unref(syntax);

	if (!chat) {
		g_io_channel_unref(io);
		return -ENOMEM;
	}

	if (getenv("OFONO_AT_DEBUG"))
		g_at_chat_set_debug(chat, phonesim_debug, NULL);

	g_io_channel_unref(io);

	ofono_modem_set_data(modem, chat);

	return 0;
}

static int phonesim_disable(struct ofono_modem *modem)
{
	GAtChat *chat = ofono_modem_get_data(modem);

	DBG("%p", modem);

	ofono_modem_set_data(modem, NULL);

	g_at_chat_unref(chat);

	return 0;
}

static void phonesim_populate(struct ofono_modem *modem)
{
	GAtChat *chat = ofono_modem_get_data(modem);
	struct ofono_message_waiting *mw;

	DBG("%p", modem);

	ofono_devinfo_create(modem, 0, "atmodem", chat);
	ofono_ussd_create(modem, 0, "atmodem", chat);
	ofono_sim_create(modem, 0, "atmodem", chat);
	ofono_call_forwarding_create(modem, 0, "atmodem", chat);
	ofono_call_settings_create(modem, 0, "atmodem", chat);
	ofono_netreg_create(modem, 0, "atmodem", chat);
	ofono_voicecall_create(modem, 0, "atmodem", chat);
	ofono_call_meter_create(modem, 0, "atmodem", chat);
	ofono_call_barring_create(modem, 0, "atmodem", chat);
	ofono_ssn_create(modem, 0, "atmodem", chat);
	ofono_sms_create(modem, 0, "atmodem", chat);
	ofono_phonebook_create(modem, 0, "atmodem", chat);

	mw = ofono_message_waiting_create(modem);
	if (mw)
		ofono_message_waiting_register(mw);
}

static struct ofono_modem_driver phonesim_driver = {
	.name		= "phonesim",
	.probe		= phonesim_probe,
	.remove		= phonesim_remove,
	.enable		= phonesim_enable,
	.disable	= phonesim_disable,
	.populate	= phonesim_populate,
};

static int phonesim_init(void)
{
	return ofono_modem_driver_register(&phonesim_driver);
}

static void phonesim_exit(void)
{
	ofono_modem_driver_unregister(&phonesim_driver);
}

OFONO_PLUGIN_DEFINE(phonesim, "PhoneSIM driver", VERSION,
		OFONO_PLUGIN_PRIORITY_DEFAULT, phonesim_init, phonesim_exit)