private void UpdateLocationInfo(IDocumentSnapshot document, GeoPoint location)
{
var key = document.Id;
_locationInfos.TryGetValue(key, out var oldInfo);
var isNew = oldInfo == null;
var changedLocation = oldInfo != null && !Equals(oldInfo.Location, location);
var wasInQuery = oldInfo != null && oldInfo.InGeoQuery;
var isInQuery = LocationIsInQuery(location);
if ((isNew || !wasInQuery) && isInQuery)
{
OnDocumentEntered?.Invoke(this, new DocumentEventArgs <T>(document.ToObject <T>(), location));
}
else if (!isNew && isInQuery)
{
if (changedLocation)
{
OnDocumentMoved?.Invoke(this, new DocumentEventArgs <T>(document.ToObject <T>(), location));
}
OnDocumentChanged?.Invoke(this, new DocumentEventArgs <T>(document.ToObject <T>(), location));
}
else if (wasInQuery && !isInQuery)
{
OnDocumentExited?.Invoke(this, new DocumentEventArgs <T>(document.ToObject <T>()));
}
var newInfo = new LocationInfo(location, LocationIsInQuery(location), document);
_locationInfos.Add(key, newInfo);
}
private void ChildRemoved(IDocumentSnapshot document)
{
var key = document.Id;
var info = _locationInfos[key];
if (info == null)
{
return;
}
lock (_lock)
{
var location = GeoFire.GetLocationValue(document);
var hash = (location != null) ? new GeoHash(location) : null;
if (hash != null && GeoHashQueriesContainGeoHash(hash))
{
return;
}
_locationInfos.Remove(key);
if (!info.InGeoQuery)
{
return;
}
OnDocumentExited?.Invoke(this, new DocumentEventArgs <T>(info.Snapshot.ToObject <T>()));
}
}
