/*
    * 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.resolver.examples.util;
  
  import java.io.IOException;
  import java.io.UncheckedIOException;
  import java.nio.file.FileSystem;
  import java.nio.file.Paths;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import com.google.common.jimfs.Configuration;
  import com.google.common.jimfs.Jimfs;
  import org.eclipse.aether.RepositorySystem;
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.RepositorySystemSession.SessionBuilder;
  import org.eclipse.aether.repository.RemoteRepository;
  import org.eclipse.aether.supplier.SessionBuilderSupplier;
  import org.eclipse.aether.util.graph.visitor.DependencyGraphDumper;
  
  /**
   * A helper to boot the repository system and a repository system session.
   */
  public class Booter {
      public static final String SUPPLIER = "supplier";
  
      public static final String SISU = "sisu";
  
      public static final DependencyGraphDumper DUMPER_SOUT = new DependencyGraphDumper(System.out::println);
  
      public static String selectFactory(String[] args) {
          if (args == null || args.length == 0) {
              return SUPPLIER;
          } else {
              return args[0];
          }
      }
  
      public static RepositorySystem newRepositorySystem(final String factory) {
          switch (factory) {
              case SUPPLIER:
                  return org.apache.maven.resolver.examples.supplier.SupplierRepositorySystemFactory
                          .newRepositorySystem();
              case SISU:
                  return org.apache.maven.resolver.examples.sisu.SisuRepositorySystemFactory.newRepositorySystem();
              default:
                  throw new IllegalArgumentException("Unknown factory: " + factory);
          }
      }
  
      public static SessionBuilder newRepositorySystemSession(RepositorySystem system) {
          FileSystem fs = Jimfs.newFileSystem(Configuration.unix());
          SessionBuilder result = new SessionBuilderSupplier(system)
                  .get()
                  .withLocalRepositoryBaseDirectories(fs.getPath("local-repo"))
                  .setRepositoryListener(new ConsoleRepositoryListener())
                  .setTransferListener(new ConsoleTransferListener())
                  .setConfigProperty("aether.generator.gpg.enabled", Boolean.TRUE.toString())
                  .setConfigProperty(
                          "aether.generator.gpg.keyFilePath",
                          Paths.get("src/main/resources/alice.key")
                                  .toAbsolutePath()
                                  .toString())
                  .setConfigProperty("aether.syncContext.named.factory", "noop");
          result.addOnSessionEndedHandler(() -> {
              try {
                  fs.close();
              } catch (IOException e) {
                  throw new UncheckedIOException(e);
              }
          });
  
          // uncomment to generate dirty trees
          // session.setDependencyGraphTransformer( null );
  
          return result;
      }
  
      public static List<RemoteRepository> newRepositories(RepositorySystem system, RepositorySystemSession session) {
          return new ArrayList<>(Collections.singletonList(newCentralRepository()));
      }
  
     private static RemoteRepository newCentralRepository() {
         return new RemoteRepository.Builder("central", "default", "https://repo.maven.apache.org/maven2/").build();
     }
 }