package org.simantics.district.network.ui.techtype.adapters;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import org.eclipse.core.runtime.FileLocator;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.ui.workbench.modeling.EPartService;
import org.eclipse.e4.ui.workbench.modeling.EPartService.PartState;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.PlatformUI;
import org.simantics.Simantics;
import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.common.request.ReadRequest;
import org.simantics.db.exception.DatabaseException;
import org.simantics.district.network.ontology.DistrictNetworkResource;
import org.simantics.district.network.ui.techtype.table.TechTypeTableView;
import org.simantics.ui.utils.ResourceAdaptionUtils;
import org.simantics.ui.workbench.editor.AbstractResourceEditorAdapter;
import org.simantics.ui.workbench.editor.EditorAdapter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Reino Ruusu
 */
public class TechTypeEditorAdapter extends AbstractResourceEditorAdapter implements EditorAdapter {

	private static final Logger LOGGER = LoggerFactory.getLogger(TechTypeEditorAdapter.class);

	public TechTypeEditorAdapter() throws MalformedURLException, IOException {
		super("Tech Type Table View");
		setIcon(ImageDescriptor.createFromURL(FileLocator.resolve(new URL("platform:/plugin/com.famfamfam.silk/icons/table.png")))); //$NON-NLS-1$
	}

	@Override
	public boolean canHandle(ReadGraph graph, Object input) throws DatabaseException {
		Resource r = ResourceAdaptionUtils.toSingleResource(input);
		if (r == null)
			return false;
		return graph.isInstanceOf(r, DistrictNetworkResource.getInstance(graph).TechType_TechTypeTable);
	}

	@Override
	public void openEditor(Resource table) throws Exception {
		IEclipseContext eclipseContext = PlatformUI.getWorkbench().getService(IEclipseContext.class);
		if (eclipseContext == null) {
			LOGGER.error("No Eclipse context available");
			return;
		}

		eclipseContext = eclipseContext.getActiveLeaf();
		EPartService partService = eclipseContext.get(EPartService.class);
		if (partService == null)
			return;

		partService.showPart(TechTypeTableView.ID, PartState.ACTIVATE);

		try {
			Simantics.getSession().syncRequest(new ReadRequest() {
				@Override
				public void run(ReadGraph graph) throws DatabaseException {
					DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
					Resource componentType = graph.getPossibleObject(table, DN.TechType_TechTypeTable_HasComponentType);
					if (componentType != null) {
						TechTypeTableView.table.getDisplay().asyncExec(() -> {
							TechTypeTableView.table.setComponentType(componentType);
						});
					} else {
						String data = graph.getRelatedValue2(table, DN.TechType_TechTypeTable_HasData);
						int[] enabled = graph.getPossibleRelatedValue2(table, DN.TechType_TechTypeTable_HasEnabledItems);
						TechTypeTableView.table.getDisplay().asyncExec(() -> {
							TechTypeTableView.table.setComponentType(null);
							TechTypeTableView.table.setTechTypeData(data, enabled);
						});
					}
				}
			});
		} catch (DatabaseException e) {
			LOGGER.error("Failed to read tech type table {}", table, e);
		}
	}
}