/*
    * 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.lifecycle.internal.stub;
  
  import org.apache.maven.lifecycle.internal.ProjectSegment;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.concurrent.Callable;
  import java.util.concurrent.CompletionService;
  import java.util.concurrent.Future;
  import java.util.concurrent.FutureTask;
  import java.util.concurrent.TimeUnit;
  
  /**
   * @author Kristian Rosenvold
   */
  public class CompletionServiceStub
      implements CompletionService<ProjectSegment>
  {
      List<FutureTask<ProjectSegment>> projectBuildFutureTasks =
          Collections.synchronizedList( new ArrayList<FutureTask<ProjectSegment>>() );
  
      final boolean finishImmediately;
  
  
      public int size()
      {
          return projectBuildFutureTasks.size();
      }
  
      public CompletionServiceStub( boolean finishImmediately )
      {
          this.finishImmediately = finishImmediately;
      }
  
      public Future<ProjectSegment> submit( Callable<ProjectSegment> task )
      {
          FutureTask<ProjectSegment> projectBuildFutureTask = new FutureTask<>( task );
          projectBuildFutureTasks.add( projectBuildFutureTask );
          if ( finishImmediately )
          {
              projectBuildFutureTask.run();
          }
          return projectBuildFutureTask;
      }
  
      public Future<ProjectSegment> submit( Runnable task, ProjectSegment result )
      {
          FutureTask<ProjectSegment> projectBuildFutureTask = new FutureTask<>( task, result );
          projectBuildFutureTasks.add( projectBuildFutureTask );
          if ( finishImmediately )
          {
              projectBuildFutureTask.run();
          }
          return projectBuildFutureTask;
      }
  
      public Future<ProjectSegment> take()
          throws InterruptedException
      {
          return null;
      }
  
      public Future<ProjectSegment> poll()
      {
          return null;
      }
  
      public Future<ProjectSegment> poll( long timeout, TimeUnit unit )
          throws InterruptedException
      {
          return null;
      }
  }