/*
    * 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.project.collector;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.util.Arrays;
  import java.util.List;
  
  import org.apache.maven.DefaultMaven;
  import org.apache.maven.execution.MavenExecutionRequest;
  import org.apache.maven.model.building.ModelSource;
  import org.apache.maven.model.building.UrlModelSource;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.project.ProjectBuilder;
  import org.apache.maven.project.ProjectBuildingException;
  import org.apache.maven.project.ProjectBuildingRequest;
  
  /**
   * Strategy to collect projects for building when the Maven invocation is not in a directory that contains a pom.xml.
   */
  @Named("PomlessCollectionStrategy")
  @Singleton
  public class PomlessCollectionStrategy implements ProjectCollectionStrategy {
      private final ProjectBuilder projectBuilder;
  
      @Inject
      public PomlessCollectionStrategy(ProjectBuilder projectBuilder) {
          this.projectBuilder = projectBuilder;
      }
  
      @Override
      public List<MavenProject> collectProjects(final MavenExecutionRequest request) throws ProjectBuildingException {
          ProjectBuildingRequest buildingRequest = request.getProjectBuildingRequest();
          ModelSource modelSource = new UrlModelSource(DefaultMaven.class.getResource("project/standalone.xml"));
          MavenProject project =
                  projectBuilder.build(modelSource, buildingRequest).getProject();
          project.setExecutionRoot(true);
          request.setProjectPresent(false);
  
          return Arrays.asList(project);
      }
  }