/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements. See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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.apache.logging.log4j.status;
  
  import java.io.ByteArrayOutputStream;
  import java.io.PrintStream;
  import java.io.Serializable;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  
  import org.apache.logging.log4j.Level;
  import org.apache.logging.log4j.message.Message;
  
  import static org.apache.logging.log4j.util.Chars.*;
  
  /**
   * The Status data.
   */
  public class StatusData implements Serializable {
  
      private static final long serialVersionUID = -4341916115118014017L;
  
      private final long timestamp;
      private final StackTraceElement caller;
      private final Level level;
      private final Message msg;
      private String threadName;
      private final Throwable throwable;
  
      /**
       * Creates the StatusData object.
       * 
       * @param caller The method that created the event.
       * @param level The logging level.
       * @param msg The message String.
       * @param t The Error or Exception that occurred.
       * @param threadName The thread name
       */
      public StatusData(final StackTraceElement caller, final Level level, final Message msg, final Throwable t,
              final String threadName) {
          this.timestamp = System.currentTimeMillis();
          this.caller = caller;
          this.level = level;
          this.msg = msg;
          this.throwable = t;
          this.threadName = threadName;
      }
  
      /**
       * Returns the event's timestamp.
       * 
       * @return The event's timestamp.
       */
      public long getTimestamp() {
          return timestamp;
      }
  
      /**
       * Returns the StackTraceElement for the method that created the event.
       * 
       * @return The StackTraceElement.
       */
      public StackTraceElement getStackTraceElement() {
          return caller;
      }
  
      /**
       * Returns the logging level for the event.
       * 
       * @return The logging level.
       */
      public Level getLevel() {
          return level;
      }
  
      /**
       * Returns the message associated with the event.
       * 
       * @return The message associated with the event.
       */
      public Message getMessage() {
          return msg;
      }
  
      public String getThreadName() {
         if (threadName == null) {
             threadName = Thread.currentThread().getName();
         }
         return threadName;
     }
 
     /**
      * Returns the Throwable associated with the event.
      * 
      * @return The Throwable associated with the event.
      */
     public Throwable getThrowable() {
         return throwable;
     }
 
     /**
      * Formats the StatusData for viewing.
      * 
      * @return The formatted status data as a String.
      */
     public String getFormattedStatus() {
         final StringBuilder sb = new StringBuilder();
         final SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS");
         sb.append(format.format(new Date(timestamp)));
         sb.append(SPACE);
         sb.append(getThreadName());
         sb.append(SPACE);
         sb.append(level.toString());
         sb.append(SPACE);
         sb.append(msg.getFormattedMessage());
         final Object[] params = msg.getParameters();
         Throwable t;
         if (throwable == null && params != null && params[params.length - 1] instanceof Throwable) {
             t = (Throwable) params[params.length - 1];
         } else {
             t = throwable;
         }
         if (t != null) {
             sb.append(SPACE);
             final ByteArrayOutputStream baos = new ByteArrayOutputStream();
             t.printStackTrace(new PrintStream(baos));
             sb.append(baos.toString());
         }
         return sb.toString();
     }
 }