/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.myfaces.tobago.example.demo;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;

import javax.swing.tree.DefaultMutableTreeNode;
import java.io.InputStreamReader;

public class CategoryTree {

  private CategoryTree() {
  }

  public static DefaultMutableTreeNode createSample() {

    final InputStreamReader reader
        = new InputStreamReader(AstroData.class.getResourceAsStream("category-tree.json"));

    final Gson gson = new GsonBuilder().create();
    final CategoryNode node = gson.fromJson(reader, new TypeToken<CategoryNode>() {
    }.getType());

    return buildSubTree(node);
  }

  private static DefaultMutableTreeNode buildSubTree(CategoryNode node) {

    DefaultMutableTreeNode tree = createNode(node.getName(), node.getId());

    if (node.getChildren() != null) {
      for (CategoryNode child : node.getChildren()) {
        tree.add(buildSubTree(child));
      }
    }

    return tree;
  }

  public static DefaultMutableTreeNode createNode(final String name, final String id) {
    return new DefaultMutableTreeNode(new Node(name, id));
  }
}
