package org.simantics.district.network.ui.contributions;

import java.util.List;

import javax.inject.Named;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.e4.core.di.annotations.CanExecute;
import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.progress.UIJob;
import org.simantics.DatabaseJob;
import org.simantics.Simantics;
import org.simantics.datatypes.literal.RGB;
import org.simantics.db.Resource;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.SelectionHints;
import org.simantics.db.request.Write;
import org.simantics.district.network.DistrictNetworkUtil;
import org.simantics.district.network.ui.internal.Activator;
import org.simantics.utils.ui.ISelectionUtils;
import org.simantics.utils.ui.color.Color;
import org.simantics.utils.ui.workbench.dialogs.ColorDialog;
import org.slf4j.LoggerFactory;

public class ChangeMapBackgroundColorHandler {

    private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(ChangeMapBackgroundColorHandler.class);

    @CanExecute
    public boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION) ISelection selection) {
        final List<Resource> diagrams = ISelectionUtils.getPossibleKeys(selection, SelectionHints.KEY_MAIN, Resource.class);
        return diagrams.size() > 0;
    }

    @Execute
    public void execute(@Named(IServiceConstants.ACTIVE_SELECTION) Object selection) {
        final List<Resource> diagrams = ISelectionUtils.getPossibleKeys(selection, SelectionHints.KEY_MAIN, Resource.class);
        Job uijob = new UIJob("Change Map Background Color") {
            
            @Override
            public IStatus runInUIThread(IProgressMonitor monitor) {
                ColorDialog dialog = new ColorDialog(getDisplay().getActiveShell());
                if (dialog.open() == Dialog.OK) {
                    Color c = dialog.getColor();
                    
                    LOGGER.info("Found color {}", c);
                    Job job = new DatabaseJob("Toggle draw map") {

                        @Override
                        protected IStatus run(IProgressMonitor monitor) {
                            try {
                                Simantics.getSession().syncRequest((Write) graph -> DistrictNetworkUtil.changeMapBackgroundColor(graph, diagrams.get(0), new RGB.Integer(c.getR(), c.getG(), c.getB())));
                            } catch (DatabaseException e) {
                                return new Status(IStatus.ERROR, Activator.PLUGIN_ID, getName() + " failed.", e);
                            }
                            return Status.OK_STATUS;
                        }
                    };
                    job.setUser(true);
                    job.schedule();
                }
                return Status.OK_STATUS;
            }
        };
        uijob.setUser(true);
        uijob.schedule();
    }
}