/*******************************************************************************
 * Copyright 2018 The MIT Internet Trust Consortium
 *
 * 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 cz.muni.ics.openid.connect.model.convert;

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import javax.persistence.AttributeConverter;
import javax.persistence.Converter;
import org.springframework.util.StringUtils;

/**
 * @author jricher
 */
@Converter
public class JsonObjectStringConverter implements AttributeConverter<JsonObject, String> {

	private final JsonParser parser = new JsonParser();

	@Override
	public String convertToDatabaseColumn(JsonObject attribute) {
		return attribute != null ? attribute.toString() : null;
	}

	@Override
	public JsonObject convertToEntityAttribute(String dbData) {
		return !StringUtils.isEmpty(dbData) ? parser.parse(dbData).getAsJsonObject() : null;
	}

}
