/*
    * 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.execution.scope.internal;
  
  import java.util.Collection;
  import java.util.IdentityHashMap;
  
  import com.google.inject.Key;
  import com.google.inject.Provider;
  import com.google.inject.Scope;
  import com.google.inject.name.Named;
  import org.apache.maven.execution.MojoExecutionEvent;
  import org.apache.maven.execution.MojoExecutionListener;
  import org.apache.maven.execution.scope.WeakMojoExecutionListener;
  import org.apache.maven.plugin.MojoExecutionException;
  
  /**
   * MojoExecutionScope
   */
  public class MojoExecutionScope extends org.apache.maven.internal.impl.di.MojoExecutionScope
          implements Scope, MojoExecutionListener {
  
      public <T> void seed(Class<T> clazz, Provider<T> value) {
          getScopeState().seed(clazz, value::get);
      }
  
      public <T> Provider<T> scope(final Key<T> key, Provider<T> unscoped) {
          Object qualifier = key.getAnnotation() instanceof Named n ? n.value() : key.getAnnotation();
          org.apache.maven.di.Key<T> k =
                  org.apache.maven.di.Key.ofType(key.getTypeLiteral().getType(), qualifier);
          return scope(k, unscoped::get)::get;
      }
  
      public static <T> Provider<T> seededKeyProvider(Class<? extends T> clazz) {
          return MojoExecutionScope.<T>seededKeySupplier(clazz)::get;
      }
  
      public void beforeMojoExecution(MojoExecutionEvent event) throws MojoExecutionException {
          for (WeakMojoExecutionListener provided : getProvidedListeners()) {
              provided.beforeMojoExecution(event);
          }
      }
  
      public void afterMojoExecutionSuccess(MojoExecutionEvent event) throws MojoExecutionException {
          for (WeakMojoExecutionListener provided : getProvidedListeners()) {
              provided.afterMojoExecutionSuccess(event);
          }
      }
  
      public void afterExecutionFailure(MojoExecutionEvent event) {
          for (WeakMojoExecutionListener provided : getProvidedListeners()) {
              provided.afterExecutionFailure(event);
          }
      }
  
      private Collection<WeakMojoExecutionListener> getProvidedListeners() {
          // the same instance can be provided multiple times under different Key's
          // deduplicate instances to avoid redundant beforeXXX/afterXXX callbacks
          IdentityHashMap<WeakMojoExecutionListener, Object> listeners = new IdentityHashMap<>();
          for (Object provided : getScopeState().provided()) {
              if (provided instanceof WeakMojoExecutionListener) {
                  listeners.put((WeakMojoExecutionListener) provided, null);
              }
          }
          return listeners.keySet();
      }
  }