/*-
 * ============LICENSE_START=======================================================
 * org.openecomp.aai
 * ================================================================================
 * Copyright (C) 2017 AT&T 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.openecomp.aai.introspection;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;

import org.eclipse.persistence.jaxb.JAXBContextFactory;

import org.openecomp.aai.db.props.AAIProperties;

public class PojoInjestor {
	
	private String POJO_CLASSPATH = "org.openecomp.aai.domain.yang";
	private final Pattern classNamePattern = Pattern.compile("\\.(v\\d+)\\.");

	public PojoInjestor() {
	}
	
	public JAXBContext getContextForVersion(Version v) {
		JAXBContext context = null;
		try {
			if (!v.equals(AAIProperties.LATEST)) {
				POJO_CLASSPATH += "." + v; 
			}
			context = JAXBContextFactory.createContext(POJO_CLASSPATH, this.getClass().getClassLoader());
		} catch (JAXBException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		return context;
	}
	public Version getVersion (String classname) {
		Matcher m = classNamePattern.matcher(classname);
		String version;
		if (m.find()) {
			version = m.group(1);
		} else {
			//only POJOs of old versions have the version number in their classnames
			//so if we can't find a version, default to the latest
			version = AAIProperties.LATEST.toString();
		}
		
		return Version.valueOf(version);
	}
	
}