/**
 *
 * Copyright the original author or authors
 *
 * 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 org.jivesoftware.smack.debugger;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.jivesoftware.smack.XMPPConnection;

/**
 * Very simple debugger that prints to the console (stdout) the sent and received stanzas. Use
 * this debugger with caution since printing to the console is an expensive operation that may
 * even block the thread since only one thread may print at a time.<p>
 * <p/>
 * It is possible to not only print the raw sent and received stanzas but also the interpreted
 * packets by Smack. By default interpreted packets won't be printed. To enable this feature
 * just change the <tt>printInterpreted</tt> static variable to <tt>true</tt>.
 *
 * @author Gaston Dombiak
 */
public class ConsoleDebugger extends AbstractDebugger {
    private final SimpleDateFormat dateFormatter = new SimpleDateFormat("HH:mm:ss");

    public ConsoleDebugger(XMPPConnection connection) {
        super(connection);
    }

    @Override
    protected void log(String logMessage) {
        String formatedDate;
        synchronized (dateFormatter) {
            formatedDate = dateFormatter.format(new Date());
        }
        // CHECKSTYLE:OFF
        System.out.println(formatedDate + ' ' + logMessage);
        // CHECKSTYLE:ON
    }

    @Override
    protected void log(String logMessage, Throwable throwable) {
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        // CHECKSTYLE:OFF
        throwable.printStackTrace(pw);
        // CHECKSTYLE:ON
        log(logMessage + sw);
    }

    public static final class Factory implements SmackDebuggerFactory {

        public static final SmackDebuggerFactory INSTANCE = new Factory();

        private Factory() {
        }

        @Override
        public SmackDebugger create(XMPPConnection connection) throws IllegalArgumentException {
            return new ConsoleDebugger(connection);
        }

    }
}
