/*
 * (c) Copyright 2010-2011 AgileBirds
 *
 * This file is part of OpenFlexo.
 *
 * OpenFlexo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenFlexo is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openflexo.foundation.rm;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * 
 */

public class FlexoResourceTreeImplementation implements FlexoResourceTree {
	private FlexoResource _root;
	private List<FlexoResourceTree> _childs;

	public FlexoResourceTreeImplementation(FlexoResource resource) {
		_root = resource;
		_childs = new ArrayList<FlexoResourceTree>();
	}

	@Override
	public List<FlexoResourceTree> getChildNodes() {
		return _childs;
	}

	public void add(FlexoResourceTree tree) {
		_childs.add(tree);
	}

	@Override
	public FlexoResource getRootNode() {
		return _root;
	}

	@Override
	public boolean isEmpty() {
		return _childs.size() == 0;
	}

	@Override
	public String toString() {
		return toString(0, false);
	}

	@Override
	public String toString(int offset, boolean isLastChild) {
		StringBuilder sb = new StringBuilder();
		for (int i = 0; i < offset; i++) {
			if (i + 1 == offset) {
				sb.append("|---");
			} else if (isLastChild) {
				sb.append("    ");
			} else {
				sb.append("|   ");
			}
		}
		sb.append(_root).append("(").append(new SimpleDateFormat("dd/MM HH:mm:ss SSS").format(_root.getLastUpdate())).append(")\n");
		Iterator<FlexoResourceTree> i = _childs.iterator();
		while (i.hasNext()) {
			FlexoResourceTree child = i.next();
			sb.append(child.toString(offset + 1, !i.hasNext()));
		}
		return sb.toString();
	}
}