/*
    * 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.eclipse.aether.internal.impl;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.repository.LocalRepository;
  import org.eclipse.aether.repository.LocalRepositoryManager;
  import org.eclipse.aether.repository.NoLocalRepositoryManagerException;
  import org.eclipse.aether.spi.localrepo.LocalRepositoryManagerFactory;
  import org.eclipse.aether.spi.locator.Service;
  import org.eclipse.aether.spi.locator.ServiceLocator;
  import org.eclipse.aether.util.ConfigUtils;
  
  import static java.util.Objects.requireNonNull;
  
  /**
   * Creates enhanced local repository managers for repository types {@code "default"} or {@code "" (automatic)}. Enhanced
   * local repository manager is built upon the classical Maven 2.0 local repository structure but additionally keeps
   * track of from what repositories a cached artifact was resolved. Resolution of locally cached artifacts will be
   * rejected in case the current resolution request does not match the known source repositories of an artifact, thereby
   * emulating physically separated artifact caches per remote repository.
   */
  @Singleton
  @Named("enhanced")
  public class EnhancedLocalRepositoryManagerFactory implements LocalRepositoryManagerFactory, Service {
      private static final String CONFIG_PROP_TRACKING_FILENAME = "aether.enhancedLocalRepository.trackingFilename";
  
      private static final String DEFAULT_TRACKING_FILENAME = "_remote.repositories";
  
      private float priority = 10.0f;
  
      private LocalPathComposer localPathComposer;
  
      private TrackingFileManager trackingFileManager;
  
      private LocalPathPrefixComposerFactory localPathPrefixComposerFactory;
  
      public EnhancedLocalRepositoryManagerFactory() {
          // no arg ctor for ServiceLocator
      }
  
      @Inject
      public EnhancedLocalRepositoryManagerFactory(
              final LocalPathComposer localPathComposer,
              final TrackingFileManager trackingFileManager,
              final LocalPathPrefixComposerFactory localPathPrefixComposerFactory) {
          this.localPathComposer = requireNonNull(localPathComposer);
          this.trackingFileManager = requireNonNull(trackingFileManager);
          this.localPathPrefixComposerFactory = requireNonNull(localPathPrefixComposerFactory);
      }
  
      @Override
      public void initService(final ServiceLocator locator) {
          this.localPathComposer = requireNonNull(locator.getService(LocalPathComposer.class));
          this.trackingFileManager = requireNonNull(locator.getService(TrackingFileManager.class));
          this.localPathPrefixComposerFactory = new DefaultLocalPathPrefixComposerFactory();
      }
  
      @Override
      public LocalRepositoryManager newInstance(RepositorySystemSession session, LocalRepository repository)
              throws NoLocalRepositoryManagerException {
          requireNonNull(session, "session cannot be null");
          requireNonNull(repository, "repository cannot be null");
  
          String trackingFilename = ConfigUtils.getString(session, "", CONFIG_PROP_TRACKING_FILENAME);
          if (trackingFilename.isEmpty()
                  || trackingFilename.contains("/")
                  || trackingFilename.contains("\\")
                  || trackingFilename.contains("..")) {
              trackingFilename = DEFAULT_TRACKING_FILENAME;
          }
  
          if ("".equals(repository.getContentType()) || "default".equals(repository.getContentType())) {
              return new EnhancedLocalRepositoryManager(
                      repository.getBasedir(),
                      localPathComposer,
                      trackingFilename,
                      trackingFileManager,
                      localPathPrefixComposerFactory.createComposer(session));
         } else {
             throw new NoLocalRepositoryManagerException(repository);
         }
     }
 
     @Override
     public float getPriority() {
         return priority;
     }
 
     /**
      * Sets the priority of this component.
      *
      * @param priority The priority.
      * @return This component for chaining, never {@code null}.
      */
     public EnhancedLocalRepositoryManagerFactory setPriority(float priority) {
         this.priority = priority;
         return this;
     }
 }