/*
 *    Geotoolkit - An Open Source Java GIS Toolkit
 *    http://www.geotoolkit.org
 *
 *    (C) 2016, Geomatys
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 */
package org.geotoolkit.metadata.landsat;

import java.util.AbstractMap.SimpleEntry;
import java.util.Arrays;
import java.util.Map.Entry;
import org.geotoolkit.gui.swing.tree.DefaultMutableTreeNode;

/**
 * LandSat metadata node are composed of a key and associated value.
 * Model is organised in a tree where node with children have the key 'GROUP'
 *
 * @author Johann Sorel (Geomatys)
 * @module
 */
public class LandSatMetaNode extends DefaultMutableTreeNode {

    public LandSatMetaNode(final String key, final String value) {
        super(new SimpleEntry<String, String>(key, value));
    }

    /**
     * Get node at given path.
     *
     * @param path
     * @return LandSatMetaNode or null if node does not exist
     */
    public LandSatMetaNode search(String ... path){

        if(!path[0].equalsIgnoreCase(getKey())){
            //name does not match
            return null;
        }

        if(path.length == 1){
            return this;
        }else if(getChildCount() > 0){
            //search childrens
            final String[] subSearch = Arrays.copyOfRange(path, 1, path.length);

            for(int i=0,n=getChildCount();i<n;i++){
                final LandSatMetaNode result = ((LandSatMetaNode)getChildAt(i)).search(subSearch);
                if(result != null){
                    return result;
                }
            }
        }

        return null;
    }


    @Override
    public Entry<String, String> getUserObject() {
        return (Entry) super.getUserObject();
    }

    public String getKey() {
        return getUserObject().getKey();
    }

    public String getValue() {
        String value = getUserObject().getValue();

        if ("GROUP".equalsIgnoreCase(value)) {
            //value is a group string, used by nodes wi=hich have childrens
            return value;
        }

        if (value.startsWith("\"")) {
            value = value.substring(1, value.length() - 1);
            return value;
        }

        //can be a number or a date or time
        return value;
    }

    @Override
    public String toString() {
        return getKey() + " = " + getValue();
    }

}