/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2011, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.access.net;
  
  import ch.qos.logback.access.PatternLayout;
  import ch.qos.logback.access.spi.IAccessEvent;
  import ch.qos.logback.core.Layout;
  import ch.qos.logback.core.boolex.EventEvaluator;
  import ch.qos.logback.core.helpers.CyclicBuffer;
  import ch.qos.logback.core.net.SMTPAppenderBase;
  
  /**
   * Send an e-mail when a specific access event occurs, typically when
   * certain pages are accessed.
   * 
   * For more information about this appender, please refer to the online manual at
   * http://logback.qos.ch/manual/appenders.html#AccessSMTPAppender
   * <p>
   * @author Ceki G&uuml;lc&uuml;
   * @author S&eacute;bastien Pennec
   * 
   */
  public class SMTPAppender extends SMTPAppenderBase<IAccessEvent> {
  
    static final String DEFAULT_SUBJECT_PATTERN = "%m";
  
    /**
     * The default constructor will instantiate the appender with a
     * {@link EventEvaluator} that will trigger on events with level
     * ERROR or higher.
     */
    public SMTPAppender() {
    }
  
    /**
     * Use <code>evaluator</code> passed as parameter as the {@link
     * EventEvaluator} for this SMTPAppender.
     */
    public SMTPAppender(EventEvaluator<IAccessEvent> evaluator) {
      this.eventEvaluator = evaluator;
    }
  
    /**
     * Perform SMTPAppender specific appending actions, mainly adding the event to
     * the appropriate cyclic buffer.
     */
    protected void subAppend(CyclicBuffer<IAccessEvent> cb, IAccessEvent event) {
      cb.add(event);
    }
  
    @Override
    protected void fillBuffer(CyclicBuffer<IAccessEvent> cb, StringBuffer sbuf) {
      int len = cb.length();
      for (int i = 0; i < len; i++) {
        // sbuf.append(MimeUtility.encodeText(layout.format(cb.getOrCreate())));
        IAccessEvent event = cb.get();
        sbuf.append(layout.doLayout(event));
      }
    }
  
    @Override
    protected Layout<IAccessEvent> makeSubjectLayout(String subjectStr) {
      if(subjectStr == null) {
        subjectStr = DEFAULT_SUBJECT_PATTERN;
      }
      PatternLayout pl = new PatternLayout();
      pl.setPattern(subjectStr);
      pl.start();
      return pl;
    }
  
    protected PatternLayout makeNewToPatternLayout(String toPattern) {
      PatternLayout pl = new PatternLayout();
      pl.setPattern(toPattern);
      return pl;
    }
  
    protected boolean isEventMarkedForBufferRemoval(IAccessEvent eventObject) {
      return false;
    }
  
  }