package org.simantics.modeling.ui.actions;

import java.io.IOException;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.simantics.db.Resource;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.adapter.ActionFactory;
import org.simantics.graph.compiler.CompilationResult;
import org.simantics.ltk.Problem;
import org.simantics.modeling.CompilePGraphs;
import org.simantics.utils.ui.ExceptionUtils;

/**
 * @author Antti Villberg
 */
public class CompilePGraphsAction implements ActionFactory {

    @Override
    public Runnable create(Object target) {
        if (!(target instanceof Resource))
            return null;
        return () -> {
            try {
                CompilePGraphs.compilePGraphs((Resource) target, new CompileUserAgent());
            } catch (IOException | DatabaseException e) {
                ExceptionUtils.logAndShowError(e);
            }
        };
    }

    public static class CompileUserAgent implements CompilePGraphs.UserAgent {
        @Override
        public void reportProblems(CompilationResult result) {
            class ErrorMessageDialog extends MessageDialog {
                public ErrorMessageDialog(Shell shell) {
                    super(shell, 
                            "Unsatisfied dependencies", null, 
                            "The following dependencies were missing. Please import the dependencies and try again.", 
                            MessageDialog.ERROR, new String[] { "Continue" }, 0);
                }

                @Override
                protected Control createCustomArea(Composite composite) {
                    GridLayoutFactory.fillDefaults().applyTo(composite);

                    org.eclipse.swt.widgets.List list = new org.eclipse.swt.widgets.List(composite, SWT.BORDER | SWT.READ_ONLY);
                    GridDataFactory.fillDefaults().grab(true, true).applyTo(list);
                    for (Problem problem : result.getErrors())
                        list.add(problem.getLocation() + ": " + problem.getDescription() + "\n");
                    for (Problem problem : result.getWarnings())
                        list.add(problem.getLocation() + ": " + problem.getDescription() + "\n");

                    return composite;
                }
            }

            ErrorMessageDialog md = new ErrorMessageDialog(Display.getCurrent().getActiveShell());
            md.open();
        }
    }

}