/* diversity-control-backend.c -
 *
 * Copyright 2007-2008 OpenMoko, Inc.
 * Authored by Chia-I Wu <olv@openmoko.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#include <config.h>
#include <glib.h>
#include <dbus/dbus-glib.h>
#include <dbus/dbus-glib-bindings.h>
#include <diversity-world.h>
#include "control-marshal.h"
#include "diversity-control-backend.h"
#include "diversity-control.h"

#define CONTROL_DBUS_SERVICE	"org.openmoko.Diversity"
#define CONTROL_DBUS_PATH	"/org/openmoko/Diversity"

static struct {
	DiversityControl *ctrl;
	DBusGConnection *connection;
	DBusGProxy *dbus_proxy;
} control = { 0 };

int control_init(DiversityWorld *world, GError **error)
{
	guint32 req_ret;

	if (!g_thread_supported()) {
		g_thread_init(NULL);
		dbus_g_thread_init();
	}

	control.connection = dbus_g_bus_get(DIVERSITY_DBUS_BUS, error);
	if (!control.connection) {
		control_fini();

		return FALSE;
	}

	control.dbus_proxy =
		dbus_g_proxy_new_for_name(control.connection,
					  DBUS_SERVICE_DBUS,
					  DBUS_PATH_DBUS,
					  DBUS_INTERFACE_DBUS);

	if (!control.dbus_proxy) {
		g_set_error(error, 0, 0, "failed to create proxy\n");
		control_fini();

		return FALSE;
	}

	if (!org_freedesktop_DBus_request_name(control.dbus_proxy,
					       CONTROL_DBUS_SERVICE,
					       0, &req_ret, error)) {
		control_fini();

		return FALSE;
	}

	if (req_ret != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
		g_set_error(error, 0, 0, "failed to become primary owner\n");
		control_fini();

		return FALSE;
	}

	control.ctrl = diversity_control_new(world, control.connection, CONTROL_DBUS_PATH);
	if (!control.ctrl) {
		g_set_error(error, 0, 0, "failed to create control\n");
		control_fini();

		return FALSE;
	}

	return TRUE;
}

void control_fini(void)
{
	if (control.ctrl) {
		g_object_unref(G_OBJECT(control.ctrl));
		control.ctrl = NULL;
	}

	if (control.dbus_proxy) {
		g_object_unref(G_OBJECT(control.dbus_proxy));
		control.dbus_proxy = NULL;
	}

	if (control.connection) {
		dbus_g_connection_unref(control.connection);
		control.connection = NULL;
	}
}