/*
    * 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.internal.impl;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  
  import java.nio.file.Path;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.List;
  import java.util.Optional;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  import org.apache.maven.RepositoryUtils;
  import org.apache.maven.SessionScoped;
  import org.apache.maven.api.Artifact;
  import org.apache.maven.api.Node;
  import org.apache.maven.api.Project;
  import org.apache.maven.api.RemoteRepository;
  import org.apache.maven.api.ResolutionScope;
  import org.apache.maven.api.Scope;
  import org.apache.maven.api.Session;
  import org.apache.maven.api.annotations.Nonnull;
  import org.apache.maven.api.services.ArtifactManager;
  import org.apache.maven.api.services.MavenException;
  import org.apache.maven.api.services.ProjectManager;
  import org.apache.maven.lifecycle.LifecycleExecutionException;
  import org.apache.maven.lifecycle.internal.LifecycleDependencyResolver;
  import org.apache.maven.project.MavenProject;
  import org.codehaus.plexus.PlexusContainer;
  import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
  
  @Named
  @SessionScoped
  public class DefaultProjectManager implements ProjectManager {
  
      private final Session session;
      private final ArtifactManager artifactManager;
      private final PlexusContainer container;
  
      @Inject
      public DefaultProjectManager(Session session, ArtifactManager artifactManager, PlexusContainer container) {
          this.session = session;
          this.artifactManager = artifactManager;
          this.container = container;
      }
  
      @Nonnull
      @Override
      public Optional<Path> getPath(Project project) {
          // TODO: apiv4
          throw new UnsupportedOperationException("Not implemented yet");
      }
  
      @Nonnull
      @Override
      public Collection<Artifact> getAttachedArtifacts(Project project) {
          AbstractSession session = ((DefaultProject) project).getSession();
          Collection<Artifact> attached = getMavenProject(project).getAttachedArtifacts().stream()
                  .map(RepositoryUtils::toArtifact)
                  .map(session::getArtifact)
                  .collect(Collectors.toList());
          return Collections.unmodifiableCollection(attached);
      }
  
      @Override
      public void attachArtifact(Project project, Artifact artifact, Path path) {
          getMavenProject(project)
                  .addAttachedArtifact(RepositoryUtils.toArtifact(
                          ((DefaultProject) project).getSession().toArtifact(artifact)));
          artifactManager.setPath(artifact, path);
      }
  
      @Override
      public List<String> getCompileSourceRoots(Project project) {
          List<String> roots = getMavenProject(project).getCompileSourceRoots();
          return Collections.unmodifiableList(roots);
      }
  
      @Override
      public void addCompileSourceRoot(Project project, String sourceRoot) {
         List<String> roots = getMavenProject(project).getCompileSourceRoots();
         roots.add(sourceRoot);
     }
 
     @Override
     public List<String> getTestCompileSourceRoots(Project project) {
         List<String> roots = getMavenProject(project).getTestCompileSourceRoots();
         return Collections.unmodifiableList(roots);
     }
 
     @Override
     public void addTestCompileSourceRoot(Project project, String sourceRoot) {
         List<String> roots = getMavenProject(project).getTestCompileSourceRoots();
         roots.add(sourceRoot);
     }
 
     @Override
     public List<RemoteRepository> getRepositories(Project project) {
         // TODO: apiv4
         throw new UnsupportedOperationException("Not implemented yet");
     }
 
     @Override
     public List<Artifact> getResolvedDependencies(Project project, ResolutionScope scope) {
         Collection<String> toResolve = toScopes(scope);
         try {
             LifecycleDependencyResolver lifecycleDependencyResolver =
                     container.lookup(LifecycleDependencyResolver.class);
             Set<org.apache.maven.artifact.Artifact> artifacts = lifecycleDependencyResolver.resolveProjectArtifacts(
                     getMavenProject(project),
                     toResolve,
                     toResolve,
                     ((DefaultSession) session).getMavenSession(),
                     false,
                     Collections.emptySet());
             return artifacts.stream()
                     .map(RepositoryUtils::toArtifact)
                     .map(((DefaultSession) session)::getArtifact)
                     .collect(Collectors.toList());
         } catch (LifecycleExecutionException | ComponentLookupException e) {
             throw new MavenException("Unable to resolve project dependencies", e);
         }
     }
 
     @Override
     public Node getCollectedDependencies(Project project, ResolutionScope scope) {
         // TODO: apiv4
         throw new UnsupportedOperationException("Not implemented yet");
     }
 
     @Override
     public void setProperty(Project project, String key, String value) {
         getMavenProject(project).getProperties().setProperty(key, value);
     }
 
     private MavenProject getMavenProject(Project project) {
         return ((DefaultProject) project).getProject();
     }
 
     private Collection<String> toScopes(ResolutionScope scope) {
         return scope.scopes().stream().map(Scope::id).collect(Collectors.toList());
     }
 }