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/*
 * Copyright 2012-2015 the original author or authors.
 *
 * Licensed 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.springframework.boot.json;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.json.JSONArray;
import org.json.JSONObject;

/**
 * Thin wrapper to adapt {@code org.json.JSONObject} to a {@link JsonParser}.
 *
 * @author Dave Syer
 * @since 1.2.0
 * @see JsonParserFactory
 */
public class JsonJsonParser implements JsonParser {

	@Override
	public Map parseMap(String json) {
		Map map = new LinkedHashMap();
		putAll(map, new JSONObject(json));
		return map;
	}

	private void putAll(Map map, JSONObject object) {
		for (Object key : object.keySet()) {
			String name = key.toString();
			Object value = object.get(name);
			if (value instanceof JSONObject) {
				Map nested = new LinkedHashMap();
				putAll(nested, (JSONObject) value);
				value = nested;
			}
			if (value instanceof JSONArray) {
				List