/*
    * 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.internal.impl;
  
  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);
         }
     }
 }