package org.simantics.diagram.profile.view;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.simantics.browsing.ui.swt.widgets.impl.ReadFactoryImpl;
import org.simantics.databoard.Bindings;
import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.adapter.Instances;
import org.simantics.diagram.stubs.DiagramResource;
import org.simantics.layer0.Layer0;
import org.simantics.utils.datastructures.Pair;

public class AvailableProfiles extends ReadFactoryImpl<Resource, List<Pair<String, Object>>> {

    @Override
    public List<Pair<String, Object>> perform(ReadGraph graph, Resource runtimeDiagram) throws DatabaseException {

        Layer0 L0 = Layer0.getInstance(graph);
        DiagramResource DIA = DiagramResource.getInstance(graph);

        String modelURI = graph.getPossibleRelatedValue(runtimeDiagram, DIA.RuntimeDiagram_HasModelURI);
        if (modelURI == null)
            return Collections.emptyList();

        Resource model = graph.getPossibleResource(modelURI);
        if (model == null)
            return Collections.emptyList();

        Instances query = graph.adapt(DIA.Profile, Instances.class);

        ArrayList<Pair<String, Object>> result = new ArrayList<Pair<String, Object>>();
        for(Resource profile : query.find(graph, model)) {
        	if(!graph.hasStatement(profile, L0.Abstract)) {
        		String name = graph.getRelatedValue(profile, L0.HasName, Bindings.STRING);
        		result.add(new Pair<String, Object>(name, profile));
        	}
        }
        return result;

    }

}