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/*
 * ============LICENSE_START=======================================================
 * ONAP : ccsdk features
 * ================================================================================
 * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property.
 * All rights reserved.
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 *
 */
package org.onap.ccsdk.features.sdnr.wt.common.database.queries;

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

public class BoolQueryBuilder extends QueryBuilder {

	private JSONObject inner;

	public BoolQueryBuilder() {
		super();
		this.inner = new JSONObject();
		this.setQuery("bool", this.inner);
	}

	@Override
	public String toString() {
		return "BoolQueryBuilder [inner=" + inner + "]";
	}

	public static boolean isEmpty(JSONObject o) {
		return o.keySet().size() <= 0;
	}

	public BoolQueryBuilder must(QueryBuilder query) {

		if (!isEmpty(this.inner)) {
			Object x = this.inner.has("must") ? this.inner.get("must") : this.inner;
			if (x instanceof JSONArray) {
				((JSONArray) x).put(query.getInner());
			} else {
				this.inner = new JSONObject();
				this.inner.put("must", new JSONObject());
				JSONArray a = new JSONArray();
				a.put(x);
				a.put(query.getInner());
				this.inner.put("must", a);
			}
		} else {
			this.inner.put("must", query.getInner());
		}
		this.setQuery("bool", this.inner);
		return this;
	}

	/**
	 * @param query
	 */
	public BoolQueryBuilder should(QueryBuilder query) {
		if (!isEmpty(this.inner)) {
			Object x = this.inner.has("should") ? this.inner.get("should") : this.inner;
			if (x instanceof JSONArray) {
				((JSONArray) x).put(query.getInner());
			} else {
				this.inner = new JSONObject();
				//				this.inner.put("should", new JSONObject());
				JSONArray a = new JSONArray();
				if (!x.toString().equals("{}")) {
					a.put(x);
				}
				a.put(query.getInner());
				this.inner.put("should", a);
			}
		} else {
			this.inner.put("should", query.getInner());
		}
		this.setQuery("bool", this.inner);
		return this;
	}

}