package org.simantics.district.network.profile;

import org.simantics.databoard.Bindings;
import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.common.request.ResourceRead;
import org.simantics.db.exception.DatabaseException;
import org.simantics.diagram.stubs.DiagramResource;
import org.simantics.district.network.ontology.DistrictNetworkResource;

/**
 * @author Tuukka Lehtonen
 */
public class DiagramSettingsRequest extends ResourceRead<DiagramSettings> {

	protected DiagramSettingsRequest(Resource runtimeDiagram) {
		super(runtimeDiagram);
	}

	@Override
	public DiagramSettings perform(ReadGraph graph) throws DatabaseException {
		DiagramResource DIA = DiagramResource.getInstance(graph);
		DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);

		Resource edgeThicknessProperty = null;
		Resource nodeScalingProperty = null;
		double edgeThicknessScale = 1;
		double nodeScalingScale = 1;

		Resource diagram = graph.getPossibleObject(resource, DIA.RuntimeDiagram_HasConfiguration);
		if (diagram != null) {
			Resource etp = graph.getPossibleObject(diagram, DN.Diagram_edgeThicknessProperty);
			edgeThicknessProperty = graph.getPossibleObject(etp, DN.Edge_ThicknessProperty_value);
//			Resource nsp = graph.getPossibleObject(diagram, DN.Diagram_nodeScalingProperty);
//			nodeScalingProperty = graph.getPossibleObject(nsp, DN.Vertex_ScaleProperty_value);

			edgeThicknessScale =
					safeDoubleProperty(graph, etp, DN.Edge_ThicknessProperty_scale, 1)
					* safeDoubleProperty(graph, diagram, DN.Diagram_edgeThicknessScale, 1);

//			nodeScalingScale =
//					safeDoubleProperty(graph, nsp, DN.Vertex_ScaleProperty_scale, 1)
//					* safeDoubleProperty(graph, diagram, DN.Diagram_nodeScale, 1);
		}

		return new DiagramSettings(nodeScalingProperty, nodeScalingScale, edgeThicknessProperty, edgeThicknessScale);
	}

	private static double safeDoubleProperty(ReadGraph graph, Resource r, Resource property, double defaultValue) throws DatabaseException {
		Double d = graph.getPossibleRelatedValue(r, property, Bindings.DOUBLE);
		return d != null ? d : defaultValue;
	}

}