/*******************************************************************************
 * ============LICENSE_START====================================================
 * * org.onap.aaf
 * * ===========================================================================
 * * Copyright © 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====================================================
 * *
 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 * *
 ******************************************************************************/
package org.onap.aaf.inno.env.impl;

import java.util.logging.Level;
import java.util.logging.Logger;

import org.onap.aaf.inno.env.LogTarget;

/**
 * This LogTarget Implementation is included mostly because the JavaUtil based logging is included in the
 * JDK.  This makes the default implementation independent of any external Jars.
 * 
 *  Log4j is often considered more Enterprise capable.  See Log4JLogTarget for that implementation
 * 
 *
 */
public class JavaUtilLogTarget implements LogTarget {
	private Level level;
	private Logger log;

	public JavaUtilLogTarget(Logger logger, Level theLevel) {
		log = logger;
		level = theLevel;
	}

	public boolean isLoggable() {
		return log.isLoggable(level);
	}

	public void log(Object ... msgs) {
		if(log.isLoggable(level)) {
			StringBuilder sb = new StringBuilder();
			String msg;
			for(int i=0;i<msgs.length;++i) {
				msg = msgs[i].toString();
				if(msg!=null && msg.length()>0) {
					int sbl = sb.length();
					if(sbl>0) {
						char last = sb.charAt(sbl-1);
						if(" (.".indexOf(last)<0 && "().".indexOf(msg.charAt(0))<0)sb.append(' ');
					}
					sb.append(msg);
				}
			}
			log.log(level, sb.toString());
		}
	}

	public void log(Throwable e, Object ... msgs) {
		String str = e.getLocalizedMessage();
		if(str==null) {
			str = e.getMessage();
		}
		if(str==null) {
			str = e.getClass().getName();
		}
		log.log(level,str,msgs);
	}

	/* (non-Javadoc)
	 * @see com.att.inno.env.LogTarget#printf(java.lang.String, java.lang.String[])
	 */
	@Override
	public void printf(String fmt, Object ... vars) {
		if(log.isLoggable(level)) {
			log.log(level,String.format(fmt,vars));
		}
	}
}