package org.simantics.district.route.ontology;

import org.simantics.db.RequestProcessor;
import org.simantics.db.Resource;
import org.simantics.db.ReadGraph;
import org.simantics.db.request.Read;
import org.simantics.db.Session;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.service.QueryControl;

public class RouteResource {
    
    public final Resource Actions;
    public final Resource Actions_SelectRoute;
    public final Resource Actions_ValidateRoute;
    public final Resource Route;
    public final Resource RouteActionContext;
    public final Resource RouteFolder;
        
    public static class URIs {
        public static final String Actions = "http://www.simantics.org/DistrictNetworkRoutes-1.0/Actions";
        public static final String Actions_SelectRoute = "http://www.simantics.org/DistrictNetworkRoutes-1.0/Actions/SelectRoute";
        public static final String Actions_ValidateRoute = "http://www.simantics.org/DistrictNetworkRoutes-1.0/Actions/ValidateRoute";
        public static final String Route = "http://www.simantics.org/DistrictNetworkRoutes-1.0/Route";
        public static final String RouteActionContext = "http://www.simantics.org/DistrictNetworkRoutes-1.0/RouteActionContext";
        public static final String RouteFolder = "http://www.simantics.org/DistrictNetworkRoutes-1.0/RouteFolder";
    }
    
    public static Resource getResourceOrNull(ReadGraph graph, String uri) {
        try {
            return graph.getResource(uri);
        } catch(DatabaseException e) {
            System.err.println(e.getMessage());
            return null;
        }
    }
    
    public RouteResource(ReadGraph graph) {
        Actions = getResourceOrNull(graph, URIs.Actions);
        Actions_SelectRoute = getResourceOrNull(graph, URIs.Actions_SelectRoute);
        Actions_ValidateRoute = getResourceOrNull(graph, URIs.Actions_ValidateRoute);
        Route = getResourceOrNull(graph, URIs.Route);
        RouteActionContext = getResourceOrNull(graph, URIs.RouteActionContext);
        RouteFolder = getResourceOrNull(graph, URIs.RouteFolder);
    }
    
    public static RouteResource getInstance(ReadGraph graph) {
        Session session = graph.getSession();
        RouteResource ret = session.peekService(RouteResource.class);
        if(ret == null) {
            QueryControl qc = graph.getService(QueryControl.class);
            ret = new RouteResource(qc.getIndependentGraph(graph));
            session.registerService(RouteResource.class, ret);
        }
        return ret;
    }
    
    public static RouteResource getInstance(RequestProcessor session) throws DatabaseException {
        RouteResource ret = session.peekService(RouteResource.class);
        if(ret == null) {
            ret = session.syncRequest(new Read<RouteResource>() {
                public RouteResource perform(ReadGraph graph) throws DatabaseException {
                    QueryControl qc = graph.getService(QueryControl.class);
                    return new RouteResource(qc.getIndependentGraph(graph));
                }
            });
            session.registerService(RouteResource.class, ret);
        }
        return ret;
    }
    
}