package org.simantics.district.network.techtype.requests;

import java.util.UUID;

import org.simantics.Simantics;
import org.simantics.db.Resource;
import org.simantics.db.WriteGraph;
import org.simantics.db.common.procedure.adapter.TransientCacheListener;
import org.simantics.db.common.request.WriteRequest;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.request.PossibleActiveModel;
import org.simantics.db.layer0.util.Layer0Utils;
import org.simantics.district.network.ontology.DistrictNetworkResource;
import org.simantics.layer0.Layer0;

public final class WriteTechTypeTable extends WriteRequest {
	private final String data;
	private final Resource componentType;

	public WriteTechTypeTable(Resource componentType, String data) {
		this.data = data;
		this.componentType = componentType;
	}

	@Override
	public void perform(WriteGraph graph) throws DatabaseException {
		Layer0 L0 = Layer0.getInstance(graph);
		DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);

		Resource model = graph.syncRequest(new PossibleActiveModel(Simantics.getProjectResource()));
		if (model == null)
			throw new DatabaseException("No active model for storing tech type data");

		Resource ttt = graph.syncRequest(new PossibleTechTypeTable(model, componentType), TransientCacheListener.instance());

		graph.getSession().markUndoPoint();
		
		if (ttt == null) {
			ttt = graph.newResource();
			graph.claim(ttt, L0.InstanceOf, DN.TechType_TechTypeTable);
			graph.claimLiteral(ttt, L0.HasName, UUID.randomUUID().toString());
			graph.claim(model, L0.ConsistsOf, ttt);
			graph.claim(ttt, DN.TechType_TechTypeTable_HasComponentType, componentType);
			Layer0Utils.addCommentMetadata(graph, "Create tech type table");
		} else {
			graph.deny(ttt, DN.TechType_TechTypeTable_HasEnabledItems);
			Layer0Utils.addCommentMetadata(graph, "Update tech type table");
		}

		graph.claimLiteral(ttt, DN.TechType_TechTypeTable_HasData, data);
	}
}