/*
    * 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;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.maven.api.Constants;
  import org.apache.maven.artifact.InvalidRepositoryException;
  import org.apache.maven.artifact.repository.ArtifactRepository;
  import org.apache.maven.bridge.MavenRepositorySystem;
  import org.apache.maven.settings.Mirror;
  import org.apache.maven.settings.Proxy;
  import org.apache.maven.settings.Repository;
  import org.apache.maven.settings.Server;
  import org.apache.maven.settings.Settings;
  import org.apache.maven.settings.SettingsUtils;
  import org.apache.maven.toolchain.model.PersistedToolchains;
  import org.apache.maven.toolchain.model.ToolchainModel;
  
  /**
   * Assists in populating an execution request for invocation of Maven.
   */
  @Named
  @Singleton
  public class DefaultMavenExecutionRequestPopulator implements MavenExecutionRequestPopulator {
  
      private final MavenRepositorySystem repositorySystem;
  
      @Inject
      public DefaultMavenExecutionRequestPopulator(MavenRepositorySystem repositorySystem) {
          this.repositorySystem = repositorySystem;
      }
  
      @Override
      public MavenExecutionRequest populateFromToolchains(MavenExecutionRequest request, PersistedToolchains toolchains)
              throws MavenExecutionRequestPopulationException {
          if (toolchains != null) {
              Map<String, List<ToolchainModel>> groupedToolchains = new HashMap<>(2);
  
              for (ToolchainModel model : toolchains.getToolchains()) {
                  if (!groupedToolchains.containsKey(model.getType())) {
                      groupedToolchains.put(model.getType(), new ArrayList<>());
                  }
  
                  groupedToolchains.get(model.getType()).add(model);
              }
  
              request.setToolchains(groupedToolchains);
          }
          return request;
      }
  
      @Override
      public MavenExecutionRequest populateDefaults(MavenExecutionRequest request)
              throws MavenExecutionRequestPopulationException {
          baseDirectory(request);
  
          localRepository(request);
  
          populateDefaultPluginGroups(request);
  
          return request;
      }
  
      //
      //
      //
  
      private void populateDefaultPluginGroups(MavenExecutionRequest request) {
          request.addPluginGroup("org.apache.maven.plugins");
          request.addPluginGroup("org.codehaus.mojo");
      }
  
      private void localRepository(MavenExecutionRequest request) throws MavenExecutionRequestPopulationException {
          // ------------------------------------------------------------------------
         // Local Repository
         //
         // 1. Use a value has been passed in via the configuration
         // 2. Use value in the resultant settings
         // 3. Use default value
         // ------------------------------------------------------------------------
 
         if (request.getLocalRepository() == null) {
             request.setLocalRepository(createLocalRepository(request));
         }
 
         if (request.getLocalRepositoryPath() == null) {
             request.setLocalRepositoryPath(new File(request.getLocalRepository().getBasedir()).getAbsoluteFile());
         }
     }
 
     // ------------------------------------------------------------------------
     // Artifact Transfer Mechanism
     // ------------------------------------------------------------------------
 
     private ArtifactRepository createLocalRepository(MavenExecutionRequest request)
             throws MavenExecutionRequestPopulationException {
         String localRepositoryPath = null;
 
         if (request.getLocalRepositoryPath() != null) {
             localRepositoryPath = request.getLocalRepositoryPath().getAbsolutePath();
         }
 
         if (localRepositoryPath == null || localRepositoryPath.isEmpty()) {
             String path = request.getUserProperties().getProperty(Constants.MAVEN_USER_CONF);
             if (path == null) {
                 path = request.getSystemProperties().getProperty("user.home") + File.separator + ".m2";
             }
             localRepositoryPath = new File(path, "repository").getAbsolutePath();
         }
 
         try {
             return repositorySystem.createLocalRepository(new File(localRepositoryPath));
         } catch (Exception e) {
             throw new MavenExecutionRequestPopulationException("Cannot create local repository.", e);
         }
     }
 
     private void baseDirectory(MavenExecutionRequest request) {
         if (request.getBaseDirectory() == null && request.getPom() != null) {
             request.setBaseDirectory(request.getPom().getAbsoluteFile().getParentFile());
         }
     }
 
     /*if_not[MAVEN4]*/
 
     @Override
     @Deprecated
     public MavenExecutionRequest populateFromSettings(MavenExecutionRequest request, Settings settings)
             throws MavenExecutionRequestPopulationException {
         if (settings == null) {
             return request;
         }
 
         request.setOffline(settings.isOffline());
 
         request.setInteractiveMode(settings.isInteractiveMode());
 
         request.setPluginGroups(settings.getPluginGroups());
 
         request.setLocalRepositoryPath(settings.getLocalRepository());
 
         for (Server server : settings.getServers()) {
             server = server.clone();
 
             request.addServer(server);
         }
 
         //  <proxies>
         //    <proxy>
         //      <active>true</active>
         //      <protocol>http</protocol>
         //      <host>proxy.somewhere.com</host>
         //      <port>8080</port>
         //      <username>proxyuser</username>
         //      <password>somepassword</password>
         //      <nonProxyHosts>www.google.com|*.somewhere.com</nonProxyHosts>
         //    </proxy>
         //  </proxies>
 
         for (Proxy proxy : settings.getProxies()) {
             if (!proxy.isActive()) {
                 continue;
             }
 
             proxy = proxy.clone();
 
             request.addProxy(proxy);
         }
 
         // <mirrors>
         //   <mirror>
         //     <id>nexus</id>
         //     <mirrorOf>*</mirrorOf>
         //     <url>http://repository.sonatype.org/content/groups/public</url>
         //   </mirror>
         // </mirrors>
 
         for (Mirror mirror : settings.getMirrors()) {
             mirror = mirror.clone();
 
             request.addMirror(mirror);
         }
 
         request.setActiveProfiles(settings.getActiveProfiles());
 
         for (org.apache.maven.settings.Profile rawProfile : settings.getProfiles()) {
             request.addProfile(SettingsUtils.convertFromSettingsProfile(rawProfile));
 
             if (settings.getActiveProfiles().contains(rawProfile.getId())) {
                 List<Repository> remoteRepositories = rawProfile.getRepositories();
                 for (Repository remoteRepository : remoteRepositories) {
                     try {
                         request.addRemoteRepository(MavenRepositorySystem.buildArtifactRepository(remoteRepository));
                     } catch (InvalidRepositoryException e) {
                         // do nothing for now
                     }
                 }
 
                 List<Repository> pluginRepositories = rawProfile.getPluginRepositories();
                 for (Repository pluginRepo : pluginRepositories) {
                     try {
                         request.addPluginArtifactRepository(MavenRepositorySystem.buildArtifactRepository(pluginRepo));
                     } catch (InvalidRepositoryException e) {
                         // do nothing for now
                     }
                 }
             }
         }
 
         return request;
     }
 
     /*end[MAVEN4]*/
 
 }