/*
    * 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.core.layout;
  
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.Marker;
  import org.apache.logging.log4j.core.LogEvent;
  import org.apache.logging.log4j.core.config.Configuration;
  import org.apache.logging.log4j.core.config.Node;
  import org.apache.logging.log4j.core.config.plugins.Plugin;
  import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
  import org.apache.logging.log4j.core.config.plugins.PluginConfiguration;
  import org.apache.logging.log4j.core.config.plugins.PluginElement;
  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
  import org.apache.logging.log4j.core.pattern.PatternFormatter;
  import org.apache.logging.log4j.core.pattern.PatternParser;
  import org.apache.logging.log4j.status.StatusLogger;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Selects the pattern to use based on the Marker in the LogEvent.
   */
  @Plugin(name = "MarkerPatternSelector", category = Node.CATEGORY, elementType = PatternSelector.ELEMENT_TYPE, printObject = true)
  public class MarkerPatternSelector implements PatternSelector {
  
      private final Map<String, PatternFormatter[]> formatterMap = new HashMap<>();
  
      private final Map<String, String> patternMap = new HashMap<>();
  
      private final PatternFormatter[] defaultFormatters;
  
      private final String defaultPattern;
  
      private static Logger LOGGER = StatusLogger.getLogger();
  
  
      public MarkerPatternSelector(final PatternMatch[] properties, final String defaultPattern,
                                   final boolean alwaysWriteExceptions, final boolean noConsoleNoAnsi,
                                   final Configuration config) {
          final PatternParser parser = PatternLayout.createPatternParser(config);
          for (final PatternMatch property : properties) {
              try {
                  final List<PatternFormatter> list = parser.parse(property.getPattern(), alwaysWriteExceptions, noConsoleNoAnsi);
                  formatterMap.put(property.getKey(), list.toArray(new PatternFormatter[list.size()]));
                  patternMap.put(property.getKey(), property.getPattern());
              } catch (final RuntimeException ex) {
                  throw new IllegalArgumentException("Cannot parse pattern '" + property.getPattern() + "'", ex);
              }
          }
          try {
              final List<PatternFormatter> list = parser.parse(defaultPattern, alwaysWriteExceptions, noConsoleNoAnsi);
              defaultFormatters = list.toArray(new PatternFormatter[list.size()]);
              this.defaultPattern = defaultPattern;
          } catch (final RuntimeException ex) {
              throw new IllegalArgumentException("Cannot parse pattern '" + defaultPattern + "'", ex);
          }
      }
  
      @Override
      public PatternFormatter[] getFormatters(final LogEvent event) {
          final Marker marker = event.getMarker();
          if (marker == null) {
              return defaultFormatters;
          }
          for (final String key : formatterMap.keySet()) {
              if (marker.isInstanceOf(key)) {
                  return formatterMap.get(key);
              }
          }
          return defaultFormatters;
      }
  
  
      @PluginFactory
      public static MarkerPatternSelector createSelector(@PluginElement("PatternMatch") final PatternMatch[] properties,
                                                         @PluginAttribute("defaultPattern") String defaultPattern,
                                                         @PluginAttribute(value = "alwaysWriteExceptions", defaultBoolean = true) final boolean alwaysWriteExceptions,
                                                         @PluginAttribute(value = "noConsoleNoAnsi", defaultBoolean = false) final boolean noConsoleNoAnsi,
                                                         @PluginConfiguration final Configuration config) {
          if (defaultPattern == null) {
              defaultPattern = PatternLayout.DEFAULT_CONVERSION_PATTERN;
          }
         if (properties == null || properties.length == 0) {
             LOGGER.warn("No marker patterns were provided");
         }
         return new MarkerPatternSelector(properties, defaultPattern, alwaysWriteExceptions,
                 noConsoleNoAnsi, config);
     }
 
     @Override
     public String toString() {
         final StringBuilder sb = new StringBuilder();
         boolean first = true;
         for (final Map.Entry<String, String> entry : patternMap.entrySet()) {
             if (!first) {
                 sb.append(", ");
             }
             sb.append("key=\"").append(entry.getKey()).append("\", pattern=\"").append(entry.getValue()).append("\"");
             first = false;
         }
         if (!first) {
             sb.append(", ");
         }
         sb.append("default=\"").append(defaultPattern).append("\"");
         return sb.toString();
     }
 }