package org.apache.maven.internal.impl;
   
   /*
    * 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 javax.inject.Inject;
  import javax.inject.Named;
  import javax.inject.Singleton;
  
  import java.util.Arrays;
  import java.util.List;
  import java.util.Map;
  import java.util.Optional;
  
  import org.apache.maven.api.Session;
  import org.apache.maven.api.Toolchain;
  import org.apache.maven.api.services.ToolchainManager;
  import org.apache.maven.api.services.ToolchainManagerException;
  import org.apache.maven.execution.MavenSession;
  import org.apache.maven.toolchain.DefaultToolchainManagerPrivate;
  import org.apache.maven.toolchain.MisconfiguredToolchainException;
  import org.apache.maven.toolchain.ToolchainPrivate;
  
  @Named
  @Singleton
  public class DefaultToolchainManager implements ToolchainManager
  {
      private final DefaultToolchainManagerPrivate toolchainManagerPrivate;
  
      @Inject
      public DefaultToolchainManager( DefaultToolchainManagerPrivate toolchainManagerPrivate )
      {
          this.toolchainManagerPrivate = toolchainManagerPrivate;
      }
  
      @Override
      public List<Toolchain> getToolchains( Session session, String type, Map<String, String> requirements )
              throws ToolchainManagerException
      {
          MavenSession s = ( ( DefaultSession ) session ).getMavenSession();
          List<org.apache.maven.toolchain.Toolchain> toolchains =
                  toolchainManagerPrivate.getToolchains( s, type, requirements );
          return new MappedList<>( toolchains, this::toToolchain );
      }
  
      @Override
      public Optional<Toolchain> getToolchainFromBuildContext( Session session, String type )
              throws ToolchainManagerException
      {
          MavenSession s = ( ( DefaultSession ) session ).getMavenSession();
          return Optional.ofNullable( toolchainManagerPrivate.getToolchainFromBuildContext( type, s ) )
                  .map( this::toToolchain );
      }
  
      @Override
      public List<Toolchain> getToolchainsForType( Session session, String type )
              throws ToolchainManagerException
      {
          try
          {
              MavenSession s = ( (DefaultSession) session ).getMavenSession();
              ToolchainPrivate[] toolchains = toolchainManagerPrivate.getToolchainsForType( type, s );
              return new MappedList<>( Arrays.asList( toolchains ), this::toToolchain );
          }
          catch ( MisconfiguredToolchainException e )
          {
              throw new ToolchainManagerException( "Unable to get toochains for type " + type, e );
          }
      }
  
      @Override
      public void storeToolchainToBuildContext( Session session, Toolchain toolchain )
              throws ToolchainManagerException
      {
          MavenSession s = ( ( DefaultSession ) session ).getMavenSession();
          org.apache.maven.toolchain.ToolchainPrivate tc =
                  (org.apache.maven.toolchain.ToolchainPrivate) ( (ToolchainWrapper) toolchain ).toolchain;
          toolchainManagerPrivate.storeToolchainToBuildContext( tc, s );
      }
  
      private Toolchain toToolchain( org.apache.maven.toolchain.Toolchain toolchain )
      {
          return new ToolchainWrapper( toolchain );
     }
 
     private static class ToolchainWrapper implements Toolchain
     {
         private final org.apache.maven.toolchain.Toolchain toolchain;
 
         ToolchainWrapper( org.apache.maven.toolchain.Toolchain toolchain )
         {
             this.toolchain = toolchain;
         }
 
         @Override
         public String getType()
         {
             return toolchain.getType();
         }
 
         @Override
         public String findTool( String toolName )
         {
             return toolchain.findTool( toolName );
         }
 
         @Override
         public boolean matchesRequirements( Map<String, String> requirements )
         {
             return ( (ToolchainPrivate) toolchain ).matchesRequirements( requirements );
         }
     }
 }