/*
    * 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.nio.file.Path;
  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.repository.RepositoryPolicy;
  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 FACTORY_SUPPLIER = "supplier";
  
      public static final String FACTORY_SISU = "sisu";
  
      public static final String FS_DEFAULT = "default";
  
      public static final String FS_JIMFS = "jimfs";
  
      public static final DependencyGraphDumper DUMPER_SOUT = new DependencyGraphDumper(System.out::println);
  
      public static String selectFactory(String[] args) {
          if (args == null || args.length == 0) {
              return FACTORY_SUPPLIER;
          } else {
              return args[0];
          }
      }
  
      public static String selectFs(String[] args) {
          if (args == null || args.length < 2) {
              return FS_DEFAULT;
          } else {
              return args[1];
          }
      }
  
      public static RepositorySystem newRepositorySystem(final String factory) {
          System.out.println("Using factory: " + factory);
          return switch (factory) {
              case FACTORY_SUPPLIER -> org.apache.maven.resolver.examples.supplier.SupplierRepositorySystemFactory
                      .newRepositorySystem();
              case FACTORY_SISU -> org.apache.maven.resolver.examples.sisu.SisuRepositorySystemFactory
                      .newRepositorySystem();
              default -> throw new IllegalArgumentException("Unknown factory: " + factory);
          };
      }
  
      public static SessionBuilder newRepositorySystemSession(RepositorySystem system, String fs) {
          System.out.println("Using FS: " + fs);
          boolean close;
          Path localRepository;
          if (FS_JIMFS.equals(fs)) {
              close = true;
              localRepository = Jimfs.newFileSystem(Configuration.unix()).getPath("/demo");
          } else {
              close = false;
              localRepository = Path.of("target/example-snippets-repo");
          }
          // Path localRepository = Path.of("target/example-snippets-repo");
          SessionBuilder result = new SessionBuilderSupplier(system)
                  .get()
                  .withLocalRepositoryBaseDirectories(localRepository)
                  .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());
 
         // uncomment to generate dirty trees
         // session.setDependencyGraphTransformer( null );
 
         if (close) {
             result.addOnSessionEndedHandler(() -> {
                 try {
                     localRepository.getFileSystem().close();
                 } catch (IOException e) {
                     e.printStackTrace();
                 }
             });
         }
 
         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/")
                 .setReleasePolicy(new RepositoryPolicy(
                         true,
                         RepositoryPolicy.UPDATE_POLICY_NEVER,
                         RepositoryPolicy.UPDATE_POLICY_DAILY,
                         RepositoryPolicy.CHECKSUM_POLICY_FAIL))
                 .setSnapshotPolicy(new RepositoryPolicy(
                         false,
                         RepositoryPolicy.UPDATE_POLICY_NEVER,
                         RepositoryPolicy.UPDATE_POLICY_DAILY,
                         RepositoryPolicy.CHECKSUM_POLICY_FAIL))
                 .build();
     }
 }