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/** @file vehicle_null.c
 * @brief null uses dbus signals
 *
 * Navit, a modular navigation system.
 * Copyright (C) 2005-2008 Navit Team
 *
 * 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 Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 *
 * @Author Tim Niemeyer <reddog@mastersword.de>
 * @date 2008-2009
 */

#include <config.h>
#include <string.h>
#include <glib.h>
#include <math.h>
#include <time.h>
#include "debug.h"
#include "callback.h"
#include "plugin.h"
#include "coord.h"
#include "item.h"
#include "vehicle.h"

struct vehicle_priv {
	struct callback_list *cbl;
	struct coord_geo geo;
	double speed;
	double direction;
	double height;
	double radius;
	int fix_type;
	time_t fix_time;
	char fixiso8601[128];
	int sats;
	int sats_used;
	int have_coords;
	struct attr ** attrs;
};

/**
 * @brief Free the null_vehicle
 * 
 * @param priv
 * @returns nothing
 */
static void
vehicle_null_destroy(struct vehicle_priv *priv)
{
	dbg(lvl_debug,"enter\n");
	g_free(priv);
}

/**
 * @brief Provide the outside with information
 * 
 * @param priv
 * @param type TODO: What can this be?
 * @param attr
 * @returns true/false
 */
static int
vehicle_null_position_attr_get(struct vehicle_priv *priv,
			       enum attr_type type, struct attr *attr)
{
	dbg(lvl_debug,"enter %s\n",attr_to_name(type));
	switch (type) {
#if 0
	case attr_position_fix_type:
		attr->u.num = priv->fix_type;
		break;
#endif
	case attr_position_height:
		attr->u.numd = &priv->height;
		break;
	case attr_position_speed:
		attr->u.numd = &priv->speed;
		break;
	case attr_position_direction:
		attr->u.numd = &priv->direction;
		break;
	case attr_position_radius:
		attr->u.numd = &priv->radius;
		break;

#if 0
	case attr_position_qual:
		attr->u.num = priv->sats;
		break;
	case attr_position_sats_used:
		attr->u.num = priv->sats_used;
		break;
#endif
	case attr_position_coord_geo:
		attr->u.coord_geo = &priv->geo;
		if (!priv->have_coords)
			return 0;
		break;
	case attr_position_time_iso8601:
		attr->u.str=priv->fixiso8601;
		break;
	default:
		return 0;
	}
	dbg(lvl_debug,"ok\n");
	attr->type = type;
	return 1;
}

static int
vehicle_null_set_attr(struct vehicle_priv *priv, struct attr *attr)
{
	switch (attr->type) {
	case attr_position_speed:
		priv->speed=*attr->u.numd;
		break;
	case attr_position_direction:
		priv->direction=*attr->u.numd;
		break;
	case attr_position_coord_geo:
		priv->geo=*attr->u.coord_geo;
		priv->have_coords=1;
		break;
	default:
		break;
	}
	callback_list_call_attr_0(priv->cbl, attr->type);
	return 1;
}


struct vehicle_methods vehicle_null_methods = {
	vehicle_null_destroy,
	vehicle_null_position_attr_get,
	vehicle_null_set_attr,
};

/**
 * @brief Create null_vehicle
 * 
 * @param meth
 * @param cbl
 * @param attrs
 * @returns vehicle_priv
 */
static struct vehicle_priv *
vehicle_null_new_null(struct vehicle_methods *meth,
	       		struct callback_list *cbl,
		       	struct attr **attrs)
{
	struct vehicle_priv *ret;

	dbg(lvl_debug, "enter\n");
	ret = g_new0(struct vehicle_priv, 1);
	ret->cbl = cbl;
	*meth = vehicle_null_methods;
	dbg(lvl_debug, "return\n");
	return ret;
}

/**
 * @brief register vehicle_null
 * 
 * @returns nothing
 */
void
plugin_init(void)
{
	dbg(lvl_debug, "enter\n");
	plugin_register_vehicle_type("null", vehicle_null_new_null);
}