/*
 * ============LICENSE_START==========================================
 * ONAP Portal SDK
 * ===================================================================
 * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * ===================================================================
 *
 * Unless otherwise specified, all software contained herein is licensed
 * under the Apache License, Version 2.0 (the "License");
 * you may not use this software 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.
 *
 * Unless otherwise specified, all documentation contained herein is licensed
 * under the Creative Commons License, Attribution 4.0 Intl. (the "License");
 * you may not use this documentation except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *             https://creativecommons.org/licenses/by/4.0/
 *
 * Unless required by applicable law or agreed to in writing, documentation
 * 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============================================
 *
 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 */
package org.onap.portalsdk.core.util;

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Map;

import org.apache.commons.io.FilenameUtils;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.representer.Representer;

public class YamlUtils {

	private YamlUtils() {
		// Class has only static methods
	}

	private static Yaml yaml;

	static {
		Representer representer = new Representer();
		yaml = new Yaml(representer);
	}

	public static void writeYamlFile(String filePath, String fileName, Map<String, Object> model) throws IOException {
		FileWriter writer = new FileWriter(filePath + File.separator + fileName);
		yaml.dump(model, writer);
		writer.close();
	}

	public static String returnYaml(Map<String, Object> model) throws IOException {
		return yaml.dump(model);
	}

	@SuppressWarnings("unchecked")
	public static Map<String, Object> readYamlFile(String filePath, String fileName) throws IOException {
		FileReader reader = new FileReader(FilenameUtils.normalize(filePath + File.separator + fileName));
		Map<String, Object> callFlowBs = (Map<String, Object>) yaml.load(reader);
		reader.close();
		return callFlowBs;
	}

}