/*
 * The Versatile Governor
 *
 * vsgov-client.c: main file for the Versatile Governor
 *

 Copyright (C) 2004  Joseph Pingenot
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version  2.1  of  the  License, or (at your option) any later
 version.
                                                                                                       
 This library 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
 Lesser General Public License for more details.
                                                                                                       
 You  should  have  received  a copy of the GNU Lesser General Public
 License along with this library; if not, write  to  the  Free Software
 Foundation,  Inc.,  59  Temple  Place,  Suite 330, Boston, MA 02111-1307  USA

*/

/*This code originally came from Ross Burton's article at IBM:
 *http://www-106.ibm.com/developerworks/linux/library/l-dbus.html
 *as this is my first glib and dbus app.
 *I then bolted the VSGov stuff onto ti.
*/

#include <glib.h>
#define DBUS_API_SUBJECT_TO_CHANGE
#include <dbus/dbus-glib.h>
#include <dbus/dbus-glib-lowlevel.h>

static gboolean send_ping (DBusConnection *bus);

int
main (int argc, char **argv)
{
  GMainLoop *loop;
  DBusConnection *bus;
  DBusError error;

  /* Create a new event loop to run in */
  loop = g_main_loop_new (NULL, FALSE);

  /* Get a connection to the session bus */
  dbus_error_init (&error);
  //bus = dbus_bus_get (DBUS_BUS_SESSION, &error);
  bus = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
  if (!bus) {
    g_warning ("Failed to connect to the D-BUS daemon: %s", error.message);
    dbus_error_free (&error);
    return 1;
  }

  /* Set up this connection to work in a GLib event loop */
  dbus_connection_setup_with_g_main (bus, NULL);
  /* Every second call send_ping() with the bus as an argument*/
  g_timeout_add (1000, (GSourceFunc)send_ping, bus);

  /* Start the event loop */
  g_main_loop_run (loop);
  return 0;
}

static gboolean
send_ping (DBusConnection *bus)
{
  DBusMessage *message;

  /* Create a new signal "Ping" on the "com.burtonini.dbus.Signal" interface,
   * from the object "/com/burtonini/dbus/ping". */
  message = dbus_message_new_signal ("/net/digitasaru/vsgov/Ping",
                                     "net.digitasaru.vsgov.Signal", "Ping");
  /* Append the string "Ping!" to the signal */
  dbus_message_append_args (message,
                            DBUS_TYPE_STRING, "Ping!",
                            DBUS_TYPE_INVALID);
  /* Send the signal */
  dbus_connection_send (bus, message, NULL);
  /* Free the signal now we have finished with it */
  dbus_message_unref (message);
  /* Tell the user we send a signal */
  g_print("Ping!\n");
  /* Return TRUE to tell the event loop we want to be called again */
  return TRUE;
}