/*
    * 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.maven.buildcache;
  
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.ConcurrentMap;
  
  import org.apache.maven.execution.MojoExecutionEvent;
  import org.apache.maven.execution.MojoExecutionListener;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.project.MavenProject;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * MojoParametersListener
   */
  @Singleton
  @Named
  public class MojoParametersListener implements MojoExecutionListener {
  
      private static final Logger LOGGER = LoggerFactory.getLogger(MojoParametersListener.class);
  
      @SuppressWarnings("checkstyle:LineLength")
      private final ConcurrentMap<MavenProject, Map<String, MojoExecutionEvent>> projectExecutions =
              new ConcurrentHashMap<>();
  
      @Override
      public void beforeMojoExecution(MojoExecutionEvent event) {
          final String executionKey = CacheUtils.mojoExecutionKey(event.getExecution());
          LOGGER.debug(
                  "Starting mojo execution: {}, class: {}",
                  executionKey,
                  event.getMojo().getClass());
          final MavenProject project = event.getProject();
          Map<String, MojoExecutionEvent> projectEvents = projectExecutions.get(project);
          if (projectEvents == null) {
              Map<String, MojoExecutionEvent> candidate = new ConcurrentHashMap<>();
              projectEvents = projectExecutions.putIfAbsent(project, candidate);
              if (projectEvents == null) {
                  projectEvents = candidate;
              }
          }
          projectEvents.put(executionKey, event);
      }
  
      @Override
      public void afterMojoExecutionSuccess(MojoExecutionEvent event) throws MojoExecutionException {
          // do nothing
      }
  
      @Override
      public void afterExecutionFailure(MojoExecutionEvent event) {
          // do nothing
      }
  
      public Map<String, MojoExecutionEvent> getProjectExecutions(MavenProject project) {
          return projectExecutions.get(project);
      }
  }