Continuous Background GPS Location Tracking

export const LOCATION_TASK_NAME = 'background-location-task';
const USER_ID_KEY = 'tracking_user_id';

await Location.startLocationUpdatesAsync(LOCATION_TASK_NAME, {
  accuracy: Location.Accuracy.Balanced,
  timeInterval: 1 * 60 * 1000,    // Executes every 1 minute
  distanceInterval: 0,             // Triggers even if stationary
  deferredUpdatesInterval: 1 * 60 * 1000,
  showsBackgroundLocationIndicator: true,
  foregroundService: {
    notificationTitle: 'Live Tracking Active',
    notificationBody: 'Your location is being shared with the dashboard.',
    notificationColor: '#2563eb',
  },
});

const currentHour = new Date().getHours();
if (currentHour >= 23 || currentHour < 6) {
  // Off-duty hours. Skip location transmission.
  return;
}

const dist = getDistanceMeters(Number(lastLat), Number(lastLng), lat, lng);
if (dist < 10) {
  // Movement under 10 meters. Skip API transmission to save battery.
  return;
}