#include <glib.h>

#include <location/location-gpsd-control.h>
#include <location/location-gps-device.h>
#include <location/location-misc.h>
#include <location/location-distance-utils.h>

static void
on_gps_device_changed (LocationGPSDevice *device, gpointer data)
{
	if (!device)
		return;

	if (device->fix) {
		if (device->fix->fields & LOCATION_GPS_DEVICE_TIME_SET)
			g_print ("time = %f\n", device->fix->time);

		if (device->fix->fields & LOCATION_GPS_DEVICE_LATLONG_SET)
			g_print ("lat = %f, long = %f\n",
					device->fix->latitude,
					device->fix->longitude);

		if (device->fix->fields & LOCATION_GPS_DEVICE_ALTITUDE_SET)
			g_print ("alt = %f\n", device->fix->altitude);

		if (device->fix->fields & LOCATION_GPS_DEVICE_SPEED_SET)
			g_print ("speed = %f\n", device->fix->speed);

		if (device->fix->fields & LOCATION_GPS_DEVICE_TRACK_SET)
			g_print ("track = %f\n", device->fix->track);

		if (device->fix->fields & LOCATION_GPS_DEVICE_CLIMB_SET)
			g_print ("climb = %f\n", device->fix->climb);

		g_print ("Accuracy values:\n");
		g_print ("\tept = %e, eph = %e, epv = %e, epd = %e, "
				"eps = %e, epc = %e\n",
				device->fix->ept,
				device->fix->eph,
				device->fix->epv,
				device->fix->epd,
			       	device->fix->eps,
				device->fix->epc);
	}
	
	g_print ("Satellites in view: %d\n", device->satellites_in_view);
	g_print ("Satellites in use: %d\n", device->satellites_in_use);

	if (device && device->cell_info) {
		if (device->cell_info->flags & LOCATION_CELL_INFO_GSM_CELL_INFO_SET)
			g_print ("Mobile Coutry Code GSM: %d\n", device->cell_info->gsm_cell_info.mcc);

		if (device->cell_info->flags & LOCATION_CELL_INFO_WCDMA_CELL_INFO_SET)
			g_print ("Mobile Coutry Code WCDMA: %d\n", device->cell_info->wcdma_cell_info.mcc);
	}

}

static void
on_gps_error (LocationGPSDevice *device, gpointer data)
{
	g_error ("GPS error");
}

static void
on_gps_stop (LocationGPSDevice *device, gpointer data)
{
	g_warning ("GPS stopped");
}

static void
on_gps_start (LocationGPSDevice *device, gpointer data)
{
	g_warning ("GPS started");
}

static gboolean
on_timer_start (gpointer data)
{
	LocationGPSDControl *control = (LocationGPSDControl *) data;

	location_gpsd_control_start (control);

	return FALSE;
}

static gboolean
on_timer_stop (gpointer data)
{
	LocationGPSDControl *control = (LocationGPSDControl *) data;

	location_gpsd_control_stop (control);

	return FALSE;
}

static gboolean
on_timer_quit (gpointer p)
{
	GMainLoop *loop = (GMainLoop *) p;

	g_main_loop_quit (loop);

	return FALSE;
}

int
main ()
{
	GMainLoop *loop;
	LocationGPSDControl *control;
	LocationGPSDevice *device;

	g_type_init ();

	loop = g_main_loop_new (NULL, FALSE);

	control = location_gpsd_control_get_default ();

	/*
	 * Note that in real life one may want to use some other method and interval
	 * than LOCATION_METHOD_USER_SELECTED and LOCATION_INTERVAL_DEFAULT,
	 * respectively. For more information on possible values for these parameters
	 * please see liblocation online documentation.
	 */
	g_object_set (G_OBJECT (control), 
				"preferred-method", LOCATION_METHOD_USER_SELECTED,
				"preferred-interval", LOCATION_INTERVAL_DEFAULT,
				NULL);

	device  = g_object_new (LOCATION_TYPE_GPS_DEVICE, NULL);

	g_signal_connect (control, "error",		G_CALLBACK (on_gps_error),		NULL);
	g_signal_connect (control, "gpsd-running",	G_CALLBACK (on_gps_start),		NULL);
	g_signal_connect (control, "gpsd-stopped",	G_CALLBACK (on_gps_stop),		NULL);
	g_signal_connect (device,  "changed",		G_CALLBACK (on_gps_device_changed),	NULL);

#define START_DELAY 1000 /* one second before starting locationing */
#define STOP_DELAY (START_DELAY + 5 * 60 * 1000) /* five minutes of running the location device */
#define QUIT_DELAY (STOP_DELAY + 1000) /* quit one second after stopping locationing */
	g_timeout_add (START_DELAY, on_timer_start, control);
	g_timeout_add (STOP_DELAY, on_timer_stop, control);
	g_timeout_add (QUIT_DELAY, on_timer_quit, loop);

	g_main_run (loop);

	g_object_unref (device);
	g_object_unref (control);

	return 0;
}