/*
    * 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.settings;
  
  /*
   * 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.
   */
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;
  
  import org.apache.maven.api.model.ActivationFile;
  import org.apache.maven.api.model.InputLocation;
  import org.apache.maven.api.settings.Activation;
  import org.apache.maven.api.settings.ActivationOS;
  import org.apache.maven.api.settings.ActivationProperty;
  import org.apache.maven.api.settings.Profile;
  import org.apache.maven.api.settings.Repository;
  import org.apache.maven.api.settings.RepositoryPolicy;
  import org.apache.maven.api.settings.Settings;
  import org.apache.maven.settings.v4.SettingsMerger;
  
  /**
   * Several convenience methods to handle settings
   *
   */
  public final class SettingsUtilsV4 {
  
      private SettingsUtilsV4() {
          // don't allow construction.
      }
  
      /**
       * @param dominant
       * @param recessive
       */
      public static Settings merge(Settings dominant, Settings recessive) {
          return new SettingsMerger().merge(dominant, recessive, true, Collections.emptyMap());
      }
  
      /**
       * @param modelProfile
       * @return a profile
       */
      public static Profile convertToSettingsProfile(org.apache.maven.api.model.Profile modelProfile) {
          Profile.Builder profile = Profile.newBuilder();
  
          profile.id(modelProfile.getId());
  
          org.apache.maven.api.model.Activation modelActivation = modelProfile.getActivation();
  
          if (modelActivation != null) {
              Activation.Builder activation = Activation.newBuilder();
  
              activation.activeByDefault(modelActivation.isActiveByDefault());
  
              activation.jdk(modelActivation.getJdk());
  
              org.apache.maven.api.model.ActivationProperty modelProp = modelActivation.getProperty();
  
              if (modelProp != null) {
                  ActivationProperty prop = ActivationProperty.newBuilder()
                          .name(modelProp.getName())
                          .value(modelProp.getValue())
                          .build();
                 activation.property(prop);
             }
 
             org.apache.maven.api.model.ActivationOS modelOs = modelActivation.getOs();
 
             if (modelOs != null) {
                 ActivationOS os = ActivationOS.newBuilder()
                         .arch(modelOs.getArch())
                         .family(modelOs.getFamily())
                         .name(modelOs.getName())
                         .version(modelOs.getVersion())
                         .build();
 
                 activation.os(os);
             }
 
             org.apache.maven.api.model.ActivationFile modelFile = modelActivation.getFile();
 
             if (modelFile != null) {
                 org.apache.maven.api.settings.ActivationFile file =
                         org.apache.maven.api.settings.ActivationFile.newBuilder()
                                 .exists(modelFile.getExists())
                                 .missing(modelFile.getMissing())
                                 .build();
 
                 activation.file(file);
             }
 
             profile.activation(activation.build());
         }
 
         profile.properties(modelProfile.getProperties().entrySet().stream()
                 .collect(Collectors.toMap(
                         e -> e.getKey().toString(), e -> e.getValue().toString())));
 
         List<org.apache.maven.api.model.Repository> repos = modelProfile.getRepositories();
         if (repos != null) {
             List<Repository> repositories = new ArrayList<>();
             for (org.apache.maven.api.model.Repository repo : repos) {
                 repositories.add(convertToSettingsRepository(repo));
             }
             profile.repositories(repositories);
         }
 
         List<org.apache.maven.api.model.Repository> pluginRepos = modelProfile.getPluginRepositories();
         if (pluginRepos != null) {
             List<Repository> repositories = new ArrayList<>();
             for (org.apache.maven.api.model.Repository pluginRepo : pluginRepos) {
                 repositories.add(convertToSettingsRepository(pluginRepo));
             }
             profile.pluginRepositories(repositories);
         }
 
         return profile.build();
     }
 
     /**
      * @param settingsProfile
      * @return a profile
      */
     public static org.apache.maven.api.model.Profile convertFromSettingsProfile(Profile settingsProfile) {
         org.apache.maven.api.model.Profile.Builder profile = org.apache.maven.api.model.Profile.newBuilder();
 
         profile.id(settingsProfile.getId());
 
         Activation settingsActivation = settingsProfile.getActivation();
 
         if (settingsActivation != null) {
             org.apache.maven.api.model.Activation.Builder activation =
                     org.apache.maven.api.model.Activation.newBuilder();
 
             activation.activeByDefault(settingsActivation.isActiveByDefault());
             activation.location("activeByDefault", toLocation(settingsActivation.getLocation("activeByDefault")));
 
             activation.jdk(settingsActivation.getJdk());
             activation.location("jdk", toLocation(settingsActivation.getLocation("jdk")));
 
             ActivationProperty settingsProp = settingsActivation.getProperty();
             if (settingsProp != null) {
                 activation.property(org.apache.maven.api.model.ActivationProperty.newBuilder()
                         .name(settingsProp.getName())
                         .value(settingsProp.getValue())
                         .location("name", toLocation(settingsProp.getLocation("name")))
                         .location("value", toLocation(settingsProp.getLocation("value")))
                         .build());
             }
 
             ActivationOS settingsOs = settingsActivation.getOs();
             if (settingsOs != null) {
                 activation.os(org.apache.maven.api.model.ActivationOS.newBuilder()
                         .arch(settingsOs.getArch())
                         .family(settingsOs.getFamily())
                         .name(settingsOs.getName())
                         .version(settingsOs.getVersion())
                         .location("arch", toLocation(settingsOs.getLocation("arch")))
                         .location("family", toLocation(settingsOs.getLocation("family")))
                         .location("name", toLocation(settingsOs.getLocation("name")))
                         .location("version", toLocation(settingsOs.getLocation("version")))
                         .build());
             }
 
             org.apache.maven.api.settings.ActivationFile settingsFile = settingsActivation.getFile();
             if (settingsFile != null) {
                 activation.file(ActivationFile.newBuilder()
                         .exists(settingsFile.getExists())
                         .missing(settingsFile.getMissing())
                         .location("exists", toLocation(settingsFile.getLocation("exists")))
                         .location("missing", toLocation(settingsFile.getLocation("missing")))
                         .build());
             }
 
             profile.activation(activation.build());
         }
 
         profile.properties(settingsProfile.getProperties());
         profile.location("properties", toLocation(settingsProfile.getLocation("properties")));
 
         List<Repository> repos = settingsProfile.getRepositories();
         if (repos != null) {
             profile.repositories(repos.stream()
                     .map(SettingsUtilsV4::convertFromSettingsRepository)
                     .collect(Collectors.toList()));
         }
 
         List<Repository> pluginRepos = settingsProfile.getPluginRepositories();
         if (pluginRepos != null) {
             profile.pluginRepositories(pluginRepos.stream()
                     .map(SettingsUtilsV4::convertFromSettingsRepository)
                     .collect(Collectors.toList()));
         }
 
         org.apache.maven.api.model.Profile value = profile.build();
         value.setSource("settings.xml");
         return value;
     }
 
     /**
      * @param settingsRepo
      * @return a repository
      */
     private static org.apache.maven.api.model.Repository convertFromSettingsRepository(Repository settingsRepo) {
         org.apache.maven.api.model.Repository.Builder repo = org.apache.maven.api.model.Repository.newBuilder();
 
         repo.id(settingsRepo.getId());
         repo.layout(settingsRepo.getLayout());
         repo.name(settingsRepo.getName());
         repo.url(settingsRepo.getUrl());
 
         repo.location("id", toLocation(settingsRepo.getLocation("id")));
         repo.location("layout", toLocation(settingsRepo.getLocation("layout")));
         repo.location("name", toLocation(settingsRepo.getLocation("name")));
         repo.location("url", toLocation(settingsRepo.getLocation("url")));
 
         if (settingsRepo.getSnapshots() != null) {
             repo.snapshots(convertRepositoryPolicy(settingsRepo.getSnapshots()));
         }
         if (settingsRepo.getReleases() != null) {
             repo.releases(convertRepositoryPolicy(settingsRepo.getReleases()));
         }
 
         return repo.build();
     }
 
     /**
      * @param settingsPolicy
      * @return a RepositoryPolicy
      */
     private static org.apache.maven.api.model.RepositoryPolicy convertRepositoryPolicy(
             RepositoryPolicy settingsPolicy) {
         org.apache.maven.api.model.RepositoryPolicy policy = org.apache.maven.api.model.RepositoryPolicy.newBuilder()
                 .enabled(Boolean.toString(settingsPolicy.isEnabled()))
                 .updatePolicy(settingsPolicy.getUpdatePolicy())
                 .checksumPolicy(settingsPolicy.getChecksumPolicy())
                 .location("enabled", toLocation(settingsPolicy.getLocation("enabled")))
                 .location("updatePolicy", toLocation(settingsPolicy.getLocation("updatePolicy")))
                 .location("checksumPolicy", toLocation(settingsPolicy.getLocation("checksumPolicy")))
                 .build();
         return policy;
     }
 
     /**
      * @param modelRepo
      * @return a repository
      */
     private static Repository convertToSettingsRepository(org.apache.maven.api.model.Repository modelRepo) {
         Repository repo = Repository.newBuilder()
                 .id(modelRepo.getId())
                 .layout(modelRepo.getLayout())
                 .name(modelRepo.getName())
                 .url(modelRepo.getUrl())
                 .snapshots(modelRepo.getSnapshots() != null ? convertRepositoryPolicy(modelRepo.getSnapshots()) : null)
                 .releases(modelRepo.getReleases() != null ? convertRepositoryPolicy(modelRepo.getReleases()) : null)
                 .build();
 
         return repo;
     }
 
     /**
      * @param modelPolicy
      * @return a RepositoryPolicy
      */
     private static RepositoryPolicy convertRepositoryPolicy(org.apache.maven.api.model.RepositoryPolicy modelPolicy) {
         RepositoryPolicy policy = RepositoryPolicy.newBuilder()
                 .enabled(modelPolicy.isEnabled())
                 .updatePolicy(modelPolicy.getUpdatePolicy())
                 .checksumPolicy(modelPolicy.getChecksumPolicy())
                 .build();
         return policy;
     }
 
     /**
      * @param settings could be null
      * @return a new instance of settings or null if settings was null.
      */
     public static org.apache.maven.settings.Settings copySettings(org.apache.maven.settings.Settings settings) {
         if (settings == null) {
             return null;
         }
         return new org.apache.maven.settings.Settings(settings.getDelegate());
     }
 
     private static org.apache.maven.api.model.InputLocation toLocation(
             org.apache.maven.api.settings.InputLocation location) {
         if (location != null) {
             org.apache.maven.api.settings.InputSource source = location.getSource();
             Map<Object, InputLocation> locs = location.getLocations().entrySet().stream()
                     .collect(Collectors.toMap(Map.Entry::getKey, e -> toLocation(e.getValue())));
             return new org.apache.maven.api.model.InputLocation(
                     location.getLineNumber(),
                     location.getColumnNumber(),
                     source != null ? new org.apache.maven.api.model.InputSource("", source.getLocation()) : null,
                     locs);
         } else {
             return null;
         }
     }
 }