/*
    * 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.crypto;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.maven.settings.Proxy;
  import org.apache.maven.settings.Server;
  import org.apache.maven.settings.building.DefaultSettingsProblem;
  import org.apache.maven.settings.building.SettingsProblem;
  import org.apache.maven.settings.building.SettingsProblem.Severity;
  import org.sonatype.plexus.components.sec.dispatcher.SecDispatcher;
  import org.sonatype.plexus.components.sec.dispatcher.SecDispatcherException;
  
  /**
   * Decrypts passwords in the settings.
   *
   * @author Benjamin Bentmann
   */
  @Named
  @Singleton
  public class DefaultSettingsDecrypter implements SettingsDecrypter {
      private final SecDispatcher securityDispatcher;
  
      @Inject
      public DefaultSettingsDecrypter(@Named("maven") SecDispatcher securityDispatcher) {
          this.securityDispatcher = securityDispatcher;
      }
  
      @Override
      public SettingsDecryptionResult decrypt(SettingsDecryptionRequest request) {
          List<SettingsProblem> problems = new ArrayList<>();
  
          List<Server> servers = new ArrayList<>();
  
          for (Server server : request.getServers()) {
              server = server.clone();
  
              try {
                  server.setPassword(decrypt(server.getPassword()));
              } catch (SecDispatcherException e) {
                  problems.add(new DefaultSettingsProblem(
                          "Failed to decrypt password for server " + server.getId() + ": " + e.getMessage(),
                          Severity.ERROR,
                          "server: " + server.getId(),
                          -1,
                          -1,
                          e));
              }
  
              try {
                  server.setPassphrase(decrypt(server.getPassphrase()));
              } catch (SecDispatcherException e) {
                  problems.add(new DefaultSettingsProblem(
                          "Failed to decrypt passphrase for server " + server.getId() + ": " + e.getMessage(),
                          Severity.ERROR,
                          "server: " + server.getId(),
                          -1,
                          -1,
                          e));
              }
  
              servers.add(server);
          }
  
          List<Proxy> proxies = new ArrayList<>();
  
          for (Proxy proxy : request.getProxies()) {
              try {
                  proxy.setPassword(decrypt(proxy.getPassword()));
              } catch (SecDispatcherException e) {
                  problems.add(new DefaultSettingsProblem(
                          "Failed to decrypt password for proxy " + proxy.getId() + ": " + e.getMessage(),
                          Severity.ERROR,
                          "proxy: " + proxy.getId(),
                          -1,
                          -1,
                          e));
             }
 
             proxies.add(proxy);
         }
 
         return new DefaultSettingsDecryptionResult(servers, proxies, problems);
     }
 
     private String decrypt(String str) throws SecDispatcherException {
         return (str == null) ? null : securityDispatcher.decrypt(str);
     }
 }