/*
 *
 *  oFono - Open Source Telephony
 *
 *  Copyright (C) 2008-2011  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

#define _GNU_SOURCE
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>

#include <glib.h>

#include <ofono/log.h>
#include <ofono/modem.h>
#include <ofono/audio-settings.h>

#include "gatchat.h"
#include "gatresult.h"

#include "huaweimodem.h"

static const char *cvoice_prefix[] = { "^CVOICE:", NULL };

struct audio_settings_data {
	GAtChat *chat;
};

static void cring_notify(GAtResult *result, gpointer user_data)
{
	struct ofono_audio_settings *as = user_data;

	ofono_audio_settings_active_notify(as, TRUE);
}

static void orig_notify(GAtResult *result, gpointer user_data)
{
	struct ofono_audio_settings *as = user_data;

	ofono_audio_settings_active_notify(as, TRUE);
}

static void cend_notify(GAtResult *result, gpointer user_data)
{
	struct ofono_audio_settings *as = user_data;

	ofono_audio_settings_active_notify(as, FALSE);
}

static void cvoice_support_cb(gboolean ok, GAtResult *result,
						gpointer user_data)
{
	struct ofono_audio_settings *as = user_data;
	struct audio_settings_data *asd = ofono_audio_settings_get_data(as);

	if (!ok)
		return;

	g_at_chat_register(asd->chat, "+CRING:", cring_notify, FALSE, as, NULL);
	g_at_chat_register(asd->chat, "^ORIG:", orig_notify, FALSE, as, NULL);
	g_at_chat_register(asd->chat, "^CEND:", cend_notify, FALSE, as, NULL);

	ofono_audio_settings_register(as);
}

static int huawei_audio_settings_probe(struct ofono_audio_settings *as,
					unsigned int vendor, void *data)
{
	GAtChat *chat = data;
	struct audio_settings_data *asd;

	asd = g_try_new0(struct audio_settings_data, 1);
	if (asd == NULL)
		return -ENOMEM;

	asd->chat = g_at_chat_clone(chat);

	ofono_audio_settings_set_data(as, asd);

	g_at_chat_send(asd->chat, "AT^CVOICE=?", cvoice_prefix,
					cvoice_support_cb, as, NULL);

	return 0;
}

static void huawei_audio_settings_remove(struct ofono_audio_settings *as)
{
	struct audio_settings_data *asd = ofono_audio_settings_get_data(as);

	ofono_audio_settings_set_data(as, NULL);

	g_at_chat_unref(asd->chat);
	g_free(asd);
}

static const struct ofono_audio_settings_driver driver = {
	.name		= "huaweimodem",
	.probe		= huawei_audio_settings_probe,
	.remove		= huawei_audio_settings_remove,
};

void huawei_audio_settings_init(void)
{
	ofono_audio_settings_driver_register(&driver);
}

void huawei_audio_settings_exit(void)
{
	ofono_audio_settings_driver_unregister(&driver);
}