/*******************************************************************************
 * Copyright (c) 2000, 2009 IBM Corporation and others.
 *
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.team.internal.ccvs.ui.tags;

import java.lang.reflect.InvocationTargetException;
import java.util.*;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.osgi.util.NLS;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.internal.ccvs.core.*;
import org.eclipse.team.internal.ccvs.ui.CVSUIMessages;
import org.eclipse.team.internal.ccvs.ui.CVSUIPlugin;
import org.eclipse.team.internal.ccvs.ui.repo.RepositoryManager;

/**
 * A tag source that returns the tags associated with multiple remote folders.
 * 
 * TODO: Temporarily a subclass of single folder until I 
 * can figure out how to handle the multi-folder case.
 */
public class MultiFolderTagSource extends SingleFolderTagSource {

	private final ICVSFolder[] folders;

	/* package */ MultiFolderTagSource(ICVSFolder[] folders) {
		super(folders[0]);
		this.folders = folders;
	}
	
	@Override
	public String getShortDescription() {
		return NLS.bind(CVSUIMessages.MultiFolderTagSource_0, new String[] { Integer.toString(folders.length) }); 
	}
	
	@Override
	public CVSTag[] getTags(int type) {
		if (type == CVSTag.HEAD || type == BASE) {
			return super.getTags(type);
		}
		Set<CVSTag> tags = new HashSet<>();
		for (int i= 0; i < folders.length; i++) {
			tags.addAll(Arrays.asList(getTags(folders[i], type)));
		}
		return tags.toArray(new CVSTag[tags.size()]);
	}
	
	@Override
	public CVSTag[] refresh(boolean bestEffort, IProgressMonitor monitor) throws TeamException {
		monitor.beginTask("", folders.length);  //$NON-NLS-1$
		Set<CVSTag> result = new HashSet<>();
		for (int i= 0; i < folders.length; i++) {
			ICVSFolder folder= folders[i];
			CVSTag[] tags = CVSUIPlugin.getPlugin().getRepositoryManager().refreshDefinedTags(folder, bestEffort /* recurse */, true /* notify */, Policy.subMonitorFor(monitor, 1));
			result.addAll(Arrays.asList(tags));
		}
		monitor.done();
		fireChange();
		return result.toArray(new CVSTag[result.size()]);
	}
	
	@Override
	public ICVSResource[] getCVSResources() {
		return folders;
	}
	
	public ICVSFolder[] getFolders(){
		return folders;
	}
	
	@Override
	public void commit(final CVSTag[] tags, final boolean replace, IProgressMonitor monitor) throws CVSException {
		try {
			final RepositoryManager manager = CVSUIPlugin.getPlugin().getRepositoryManager();	
			manager.run(monitor1 -> {
				try {
					ICVSFolder[] folders = getFolders();
					for (int i = 0; i < folders.length; i++) {
						if (replace) {
							CVSTag[] oldTags = manager.getKnownTags(folders[i]);
							manager.removeTags(folders[i], oldTags);
						}
						manager.addTags(folders[i], tags);
					}
				} catch (CVSException e) {
					throw new InvocationTargetException(e);
				}
			}, monitor);
		} catch (InvocationTargetException e) {
			throw CVSException.wrapException(e);
		} catch (InterruptedException e) {
			// Ignore
		}
		fireChange();
	}
}