public async Task <List <INotification> > CreateUpdatedEvent(RouteNode before, RouteNode after)
{
if (before is null || after is null)
{
throw new ArgumentNullException($"Parameter {nameof(before)} or {nameof(after)} cannot be null");
}
var shadowTableNode = await _geoDatabase.GetRouteNodeShadowTable(after.Mrid);
if (shadowTableNode is null)
{
return new List <INotification> {
new DoNothing($"{nameof(RouteNode)} is already deleted, so do nothing.")
}
}
;
if (AlreadyUpdated(after, shadowTableNode))
{
return new List <INotification> {
new DoNothing($"{nameof(RouteNode)} with id: '{after.Mrid}' was already updated therefore do nothing.")
}
}
;
await _geoDatabase.UpdateRouteNodeShadowTable(after);
if (!(await IsValidNodeUpdate(before, after)))
{
return new List <INotification> {
new RollbackInvalidRouteNode(before, "Is not a valid route node update")
}
}
;
// We roll back in-case the update-command intersects with new route-segments
var intersectingRouteSegments = await _geoDatabase.GetIntersectingRouteSegments(after);
if (intersectingRouteSegments.Count > 0)
{
var previousIntersectingRouteSegments = await _geoDatabase.GetIntersectingRouteSegments(before.Coord);
var newIntersectingRouteSegments = intersectingRouteSegments
.Where(x => !previousIntersectingRouteSegments.Any(y => y.Mrid == x.Mrid)).ToList();
if (newIntersectingRouteSegments.Count > 0)
{
return new List <INotification> {
new RollbackInvalidRouteNode(before, "Update to route node is invalid because it is insecting with route-segments.")
}
}
;
}
if (after.MarkAsDeleted)
{
return new List <INotification> {
new RouteNodeDeleted {
RouteNode = after
}
}
}
;
return(new List <INotification> {
new RouteNodeLocationChanged {
RouteNodeAfter = after, RouteNodeBefore = before
}
});
}