/*******************************************************************************
 * Copyright (c) May 18, 2011 Zend Technologies Ltd. 
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Eclipse Public License v1.0 
 * which accompanies this distribution, and is available at 
 * http://www.eclipse.org/legal/epl-v10.html  
 *******************************************************************************/
package org.zend.sdkcli.internal.logger;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import org.zend.sdklib.logger.ILogger;

/**
 * Implementation of {@link ILogger}. It provides log4j logging.
 * 
 * @author Wojciech Galanciak, 2011
 * 
 */
public class CliLogger implements ILogger {

	private Logger logger;
	private boolean verbose;

	public CliLogger() {
		PropertyConfigurator.configure(getLogProperties());
	}

	private Properties getLogProperties() {
		final InputStream stream = this.getClass().getResourceAsStream(
				"log4j.properties");
		Properties p = new Properties();
		try {
			p.load(stream);
		} catch (IOException e) {
			throw new IllegalStateException("Cannot load log4j.properties. "
					+ "Please place it where the CliLogger is declared");
		}
		return p;
	}

	private CliLogger(String creatorName) {
		this();
		this.logger = Logger.getLogger(creatorName);
	}

	@Override
	public ILogger getLogger(String creatorName, boolean verbose) {
		this.verbose = verbose;
		return new CliLogger(creatorName);
	}

	@Override
	public void info(Object message) {
		printMessage(message);
		logger.info(message);
	}

	@Override
	public void error(Object message) {
		printMessage(message);
		logger.error(message);
	}
	
	@Override
	public void debug(Object message) {
		printVerbose(message);
		logger.debug(message);
	}

	@Override
	public void warning(Object message) {
		printVerbose(message);
		logger.warn(message);
	}

	private void printVerbose(Object message) {
		if (verbose) {
			printMessage(message);
		}
	}

	private void printMessage(Object message) {
		if (message instanceof String) {
			System.out.println(message);
		} else if (message instanceof Exception) {
			((Exception) message).printStackTrace(System.out);
		}
	}
}