/*
    * 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 java.util.ArrayList;
  import java.util.List;
  
  import org.apache.maven.execution.MavenSession;
  import org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator;
  import org.apache.maven.lifecycle.internal.GoalTask;
  import org.apache.maven.lifecycle.internal.LifecycleTask;
  import org.apache.maven.lifecycle.internal.TaskSegment;
  import org.apache.maven.plugin.InvalidPluginDescriptorException;
  import org.apache.maven.plugin.MojoNotFoundException;
  import org.apache.maven.plugin.PluginDescriptorParsingException;
  import org.apache.maven.plugin.PluginNotFoundException;
  import org.apache.maven.plugin.PluginResolutionException;
  import org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException;
  import org.apache.maven.plugin.version.PluginVersionResolutionException;
  
  /**
   * @author Kristian Rosenvold
   */
  public class LifecycleTaskSegmentCalculatorStub extends DefaultLifecycleTaskSegmentCalculator {
  
      public static final String AGGR = "aggr";
  
      public List<TaskSegment> calculateTaskSegments(MavenSession session, List<String> tasks)
              throws PluginNotFoundException, PluginResolutionException, PluginDescriptorParsingException,
                      MojoNotFoundException, NoPluginFoundForPrefixException, InvalidPluginDescriptorException,
                      PluginVersionResolutionException {
          List<TaskSegment> taskSegments = new ArrayList<>(tasks.size());
  
          TaskSegment currentSegment = null;
  
          for (String task : tasks) {
              if (AGGR.equals(task)) {
                  boolean aggregating = true;
  
                  if (currentSegment == null || currentSegment.isAggregating() != aggregating) {
                      currentSegment = new TaskSegment(aggregating);
                      taskSegments.add(currentSegment);
                  }
  
                  currentSegment.getTasks().add(new GoalTask(task));
              } else {
                  // lifecycle phase
                  if (currentSegment == null || currentSegment.isAggregating()) {
                      currentSegment = new TaskSegment(false);
                      taskSegments.add(currentSegment);
                  }
                  currentSegment.getTasks().add(new LifecycleTask(task));
              }
          }
  
          return taskSegments;
      }
  
      public boolean requiresProject(MavenSession session) {
          return true;
      }
  }