public Task <Unit> Handle(RegisterWalkOfInterestCommand request, CancellationToken cancellationToken)
{
// Id check
if (request.WalkOfInterestId == null || request.WalkOfInterestId == Guid.Empty)
{
throw new ArgumentException("Id cannot be null or empty");
}
// Basic check that some route element ids are filled in at all
if (request.RouteElementIds == null || request.RouteElementIds.Count < 3)
{
throw new ArgumentException("The route element id list is empty or has less than 3 ids, which cannot possible be a valid walk. A minumum walk is from one node, through a segment, to another node (node->segment->node) - i.e. 3 ids.");
}
// Check if the chain of route element ids are valid (is proper connected to each other in the route network graph)
bool shouldBeNode = true;
bool firstElement = true;
GraphElement previousElement = null;
Guid previousElementId = Guid.Empty;
int position = 1;
foreach (var routeElementId in request.RouteElementIds)
{
GraphElement currentElement = null;
// Node
if (shouldBeNode)
{
if (!routeQueryService.CheckIfRouteNodeIdExists(routeElementId))
{
throw new ArgumentException("Route element id: " + routeElementId + " at position: " + position + " (in the route element ids property) is expected to be a node. But no node could be found with that id.");
}
currentElement = routeQueryService.GetRouteNodeInfo(routeElementId);
shouldBeNode = false;
}
// Segment
else if (!shouldBeNode)
{
if (!routeQueryService.CheckIfRouteSegmentIdExists(routeElementId))
{
throw new ArgumentException("Route element id: " + routeElementId + " at position: " + position + " (in the route element ids property) is expected to be a segment. But no segment could be found with that id.");
}
currentElement = routeQueryService.GetRouteSegmentInfo(routeElementId);
shouldBeNode = true;
}
// Check that the element is connected to the previous specified element in the route network graph
if (!firstElement)
{
if (!currentElement.NeighborElements.Exists(n => n == previousElement))
{
throw new ArgumentException("Route element id: " + routeElementId + " at position: " + position + " (in the route element ids property) is not neighboor to previous id: " + previousElementId + " according to the route network graph. Please check that the walk is valid.");
}
}
position++;
firstElement = false;
previousElementId = routeElementId;
previousElement = currentElement;
}
// Check if first id is a node
if (!(routeQueryService.GetRouteElementInfo(request.RouteElementIds[0]) is RouteNodeInfo))
{
throw new ArgumentException("First route element id (in the route element ids property) must be a node, but it's not.");
}
// Check if last id is a node
if (!(routeQueryService.GetRouteElementInfo(request.RouteElementIds[request.RouteElementIds.Count - 1]) is RouteNodeInfo))
{
throw new ArgumentException("Last route element id (in the route element ids property) must be a node, but it's not.");
}
var walkOfInterest = new WalkOfInterest(request.WalkOfInterestId, request.RouteElementIds);
repo.Store(walkOfInterest);
return(Unit.Task);
}
/// <summary>
/// Add a new route segment to the network
/// </summary>
/// <param name="routeSegmentId"></param>
/// <param name="fromNodeId"></param>
/// <param name="toNodeId"></param>
/// <param name="segmentKind"></param>
/// <param name="geometry"></param>
public void AddRouteSegment(Guid routeSegmentId, Guid fromNodeId, Guid toNodeId, RouteSegmentKindEnum segmentKind, RouteNetwork.Events.Model.Geometry geometry)
{
// Id check
if (routeSegmentId == null || routeSegmentId == Guid.Empty)
{
throw new ArgumentException("Id cannot be null or empty");
}
// Check that segment not already exists
if (routeNetworkState.CheckIfRouteSegmentIdExists(routeSegmentId))
{
throw new ArgumentException("A route segment with id: " + routeSegmentId + " already exists");
}
// Check if from node exists
if (!routeNetworkState.CheckIfRouteNodeIdExists(fromNodeId))
{
throw new ArgumentException("The FromNodeId parameter is invalid. Cannot find any node in the network with id: " + fromNodeId);
}
// Check if to node exists
if (!routeNetworkState.CheckIfRouteNodeIdExists(toNodeId))
{
throw new ArgumentException("The ToNodeId parameter is invalid. Cannot find any node in the network with id: " + toNodeId);
}
// Check that we got some valid geometry
if (geometry == null)
{
throw new ArgumentException("Cannot create route segment with id: " + routeSegmentId + " because Geometry is null, which is not allowed.");
}
if (geometry.GeoJsonType == null)
{
throw new ArgumentException("Cannot create route segment with id: " + routeSegmentId + " because Geometry.GeoJsonType is null, which is not allowed.");
}
if (geometry.GeoJsonType.ToLower() != "linestring")
{
throw new ArgumentException("Cannot create route segment with id: " + routeSegmentId + " because Geometry.GeoJsonType is: " + geometry.GeoJsonType + ", which is not allowed in route segments. Expected LineString.");
}
if (geometry.GeoJsonCoordinates == null)
{
throw new ArgumentException("Cannot create route segment with id: " + routeSegmentId + " because Geometry.GeoJsonCoordinates is null, which is not allowed.");
}
// Try parse geojson
var line = GeometryConversionHelper.ConvertFromLineGeoJson(geometry.GeoJsonCoordinates);
// Create domain event
var routeSegmentPlanned = new RouteSegmentPlanned()
{
Id = routeSegmentId,
FromNodeId = fromNodeId,
ToNodeId = toNodeId,
SegmentKind = segmentKind,
InitialGeometry = geometry
};
RaiseEvent(routeSegmentPlanned, false);
}