/* $Id$
 * UDP Gateway utility startup scripts support
 * Copyright (C) 2004 Jan Kratochvil <project-udpgate@jankratochvil.net>
 * 
 * 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; exactly version 2 of June 1991 is required
 * 
 * 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/gmessages.h>

#include "startup.h"	/* self */
#include "startup-lsb.h"
#include "startup-chkconfig.h"
#include "startup-debian.h"


gboolean udpgate_startup_query(UdpgateStartup *udpgate_startup,gboolean *is_on)
{
	g_return_val_if_fail(UDPGATE_IS_STARTUP(udpgate_startup),FALSE);

	return (*UDPGATE_STARTUP_GET_CLASS(udpgate_startup)->query)(udpgate_startup,is_on);
}

gboolean udpgate_startup_on(UdpgateStartup *udpgate_startup)
{
gboolean is_on;

	g_return_val_if_fail(UDPGATE_IS_STARTUP(udpgate_startup),FALSE);

	if (!udpgate_startup_query(udpgate_startup,&is_on))
		return FALSE;
	if (is_on==TRUE)
		return TRUE;

	if (!(*UDPGATE_STARTUP_GET_CLASS(udpgate_startup)->on)(udpgate_startup))
		return FALSE;
	if (!udpgate_startup_query(udpgate_startup,&is_on))
		return FALSE;
	if (is_on!=TRUE) {
		g_warning(_("Error registering automatic program startup!"));
		return FALSE;
		}
	return TRUE;
}

gboolean udpgate_startup_off(UdpgateStartup *udpgate_startup)
{
gboolean is_on;

	g_return_val_if_fail(UDPGATE_IS_STARTUP(udpgate_startup),FALSE);

	if (!udpgate_startup_query(udpgate_startup,&is_on))
		return FALSE;
	if (is_on==FALSE)
		return TRUE;

	if (!(*UDPGATE_STARTUP_GET_CLASS(udpgate_startup)->off)(udpgate_startup))
		return FALSE;
	if (!udpgate_startup_query(udpgate_startup,&is_on))
		return FALSE;
	if (is_on!=FALSE) {
		g_warning(_("Error removing program's system startup registrance!"));
		return FALSE;
		}
	return TRUE;
}

UdpgateStartup *udpgate_startup_new(void)
{
	const GType impl_type_array[]={
		UDPGATE_TYPE_STARTUP_LSB,
		UDPGATE_TYPE_STARTUP_CHKCONFIG,
		UDPGATE_TYPE_STARTUP_DEBIAN,
		};
	const GType *impl_type_pointer;

	for (impl_type_pointer = impl_type_array;
	     impl_type_pointer < impl_type_array + G_N_ELEMENTS(impl_type_array);
	     impl_type_pointer++) {
		UdpgateStartup *udpgate_startup;
		
		udpgate_startup=g_object_new(*impl_type_pointer,NULL);
		g_assert(UDPGATE_IS_STARTUP(udpgate_startup));
		if (UDPGATE_STARTUP_GET_CLASS(udpgate_startup)->init(udpgate_startup))
			return udpgate_startup;
		g_object_unref(udpgate_startup);
	}

	return NULL;
}

static void
udpgate_startup_class_init (UdpgateStartupClass *class)
{
}

GType
udpgate_startup_get_type(void)
{
  static GType startup_type=0;

  if (!startup_type) {
		static const GTypeInfo startup_info={
			sizeof(UdpgateStartupClass),
			NULL,		/* base_init */
			NULL,		/* base_finalize */
			(GClassInitFunc)udpgate_startup_class_init,
			NULL,		/* class_finalize */
			NULL,		/* class_data */
			sizeof(UdpgateStartup),
			0,		/* n_preallocs */
			NULL,		/* instance_init */
			NULL,		/* value_table */
      };

		startup_type=g_type_register_static(G_TYPE_OBJECT,"UdpgateStartup",
				 &startup_info,G_TYPE_FLAG_ABSTRACT);
    }

  return startup_type;
}