/*
    * 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.slf4j;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Objects;
  
  import org.apache.logging.log4j.MarkerManager;
  import org.slf4j.IMarkerFactory;
  import org.slf4j.Marker;
  import org.slf4j.impl.StaticMarkerBinder;
  
  /**
   * Log4j/SLF4J {@link org.slf4j.Marker} type bridge.
   */
  public class Log4jMarker implements Marker {
  
      public static final long serialVersionUID = 1590472L;
  
      private final IMarkerFactory factory = StaticMarkerBinder.SINGLETON.getMarkerFactory();
  
      private final org.apache.logging.log4j.Marker marker;
  
      /**
       * Constructs a Log4jMarker using an existing Log4j {@link org.apache.logging.log4j.Marker}.
       * @param marker The Log4j Marker upon which to base this Marker.
       */
      public Log4jMarker(final org.apache.logging.log4j.Marker marker) {
          this.marker = marker;
      }
  
      @Override
      public void add(final Marker marker) {
  		if (marker == null) {
  			throw new IllegalArgumentException();
  		}
          final Marker m = factory.getMarker(marker.getName());
          this.marker.addParents(((Log4jMarker)m).getLog4jMarker());
      }
  
      @Override
  	public boolean contains(final org.slf4j.Marker marker) {
  		if (marker == null) {
  			throw new IllegalArgumentException();
  		}
  		return this.marker.isInstanceOf(marker.getName());
  	}
  
      @Override
  	public boolean contains(final String s) {
  		return s != null ? this.marker.isInstanceOf(s) : false;
  	}
  
      @Override
  	public boolean equals(final Object obj) {
  		if (this == obj) {
  			return true;
  		}
  		if (obj == null) {
  			return false;
  		}
  		if (!(obj instanceof Log4jMarker)) {
  			return false;
  		}
  		final Log4jMarker other = (Log4jMarker) obj;
  		if (!Objects.equals(marker, other.marker)) {
  			return false;
  		}
  		return true;
  	}
  
      public org.apache.logging.log4j.Marker getLog4jMarker() {
          return marker;
      }
  
      @Override
      public String getName() {
          return marker.getName();
      }
  
      @Override
      public boolean hasChildren() {
          return marker.hasParents();
     }
 
     @Override
 	public int hashCode() {
 		return 31 + Objects.hashCode(marker);
 	}
 
     @Override
     public boolean hasReferences() {
         return marker.hasParents();
     }
 
 	@Override
     public Iterator<Marker> iterator() {
         final org.apache.logging.log4j.Marker[] log4jParents = this.marker.getParents();
         final List<Marker> parents = new ArrayList<>(log4jParents.length);
 		for (final org.apache.logging.log4j.Marker m : log4jParents) {
             parents.add(factory.getMarker(m.getName()));
         }
         return parents.iterator();
     }
 
 	@Override
 	public boolean remove(final Marker marker) {
 		return marker != null ? this.marker.remove(MarkerManager.getMarker(marker.getName())) : false;
 	}
 }