/*****************************************************************************
 * Copyright (c) 2011, 2017 CEA LIST, Christian W. Damus, and others.
 *
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *  Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation
 *  Christian W. Damus (CEA LIST) - adapted for CDO repository resource hyperlinks
 *  Christian W. Damus - bug 488965
 *
 *****************************************************************************/

package org.eclipse.papyrus.cdo.internal.ui.hyperlink;

import static com.google.common.base.Predicates.instanceOf;
import static com.google.common.collect.Iterables.filter;

import java.util.List;

import org.eclipse.emf.cdo.eresource.CDOResource;
import org.eclipse.emf.cdo.eresource.CDOResourceLeaf;
import org.eclipse.emf.cdo.eresource.CDOResourceNode;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EAnnotation;
import org.eclipse.emf.ecore.EModelElement;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.jface.window.Window;
import org.eclipse.papyrus.cdo.internal.ui.views.DIModel;
import org.eclipse.papyrus.infra.core.utils.AdapterUtils;
import org.eclipse.papyrus.infra.hyperlink.helper.AbstractHyperLinkHelper;
import org.eclipse.papyrus.infra.hyperlink.helper.IHyperlinkHelperExtension;
import org.eclipse.papyrus.infra.hyperlink.object.HyperLinkObject;
import org.eclipse.papyrus.infra.hyperlink.util.HyperLinkConstants;
import org.eclipse.swt.widgets.Shell;

import com.google.common.collect.ImmutableList;


/**
 * Helper extension for hyperlinks to resources in CDO model repositories.
 */
public class CDOResourceHyperlinkHelper extends AbstractHyperLinkHelper implements IHyperlinkHelperExtension {

	@Override
	public HyperLinkObject getHyperLinkObject(EAnnotation eAnnotation) {
		CDOResourceHyperlink result = null;

		if (eAnnotation.getSource().equals(CDOHyperlinkConstants.HYPERLINK_ANNOTATION_SOURCE)) {
			result = new CDOResourceHyperlink();
			result.setHyperlink(URI.createURI(eAnnotation.getDetails().get(CDOHyperlinkConstants.HYPERLINK_DETAIL_URI)));
			result.setTooltipText(eAnnotation.getDetails().get(HyperLinkConstants.HYPERLINK_TOOLTYPE_TEXT));
			if (eAnnotation.getDetails().get(HyperLinkConstants.HYPERLINK_IS_DEFAULT_NAVIGATION) != null) {
				boolean isDefaultNaviagation = Boolean.parseBoolean(eAnnotation.getDetails().get(HyperLinkConstants.HYPERLINK_IS_DEFAULT_NAVIGATION));
				result.setIsDefault(isDefaultNaviagation);
			} else {
				result.setIsDefault(false);
			}
		}

		return result;
	}

	@Override
	public RecordingCommand getAddHyperLinkCommand(TransactionalEditingDomain domain, EModelElement object, HyperLinkObject hyperlinkObject) {
		RecordingCommand result = null;

		if (hyperlinkObject instanceof CDOResourceHyperlink) {
			CDOResourceHyperlink cdoHyperlink = (CDOResourceHyperlink) hyperlinkObject;
			result = new CreateCDOResourceHyperlinkCommand(domain, object, cdoHyperlink.getTooltipText(), cdoHyperlink.getHyperlink(), cdoHyperlink.getIsDefault());
		}

		return result;
	}

	@Override
	public String getNameofManagedHyperLink() {
		return Messages.CDOResourceHyperlinkHelper_name;
	}

	@Override
	public void executeNewMousePressed(Shell parentShell, List<HyperLinkObject> list, EObject aModel) {
		CDOResourceHyperlinkEditorShell editor = new CDOResourceHyperlinkEditorShell(parentShell);
		if (editor.open() == Window.OK) {
			list.add(editor.getHyperlink());
		}
	}

	@Override
	public List<HyperLinkObject> getFilteredObject(List<HyperLinkObject> hyperlinkObjects) {
		return ImmutableList.copyOf(filter(hyperlinkObjects, instanceOf(CDOResourceHyperlink.class)));
	}

	@Override
	public Command getCreateHyperlinkCommand(TransactionalEditingDomain domain, EModelElement linkOwner, Object linkTarget) {
		Command result = null;

		CDOResourceNode node = AdapterUtils.adapt(linkTarget, CDOResourceNode.class, null);
		if (node instanceof CDOResourceLeaf) {
			URI uri = node.getURI();
			String tip = uri.lastSegment();

			if (node instanceof CDOResource) {
				DIModel di = DIModel.getInstance((CDOResource) node, false);
				if (di != null) {
					// it's a DI model. We don't use file extensions with their names
					tip = di.getName();
				}
			}

			// don't navigate CDO documents by default; this is most appropriate for links to diagrams
			result = new CreateCDOResourceHyperlinkCommand(domain, linkOwner, tip, uri, false);
		}

		return result;
	}
}