/*
    * 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.plugins.pmd.exec;
  
  import javax.inject.Provider;
  
  import java.util.List;
  import java.util.Map;
  
  import org.apache.maven.execution.MavenSession;
  import org.apache.maven.toolchain.Toolchain;
  import org.apache.maven.toolchain.ToolchainManager;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Abstract service executor for CPD and PMD.
   */
  abstract class ServiceExecutor {
  
      private static final Logger LOG = LoggerFactory.getLogger(ServiceExecutor.class);
  
      private final ToolchainManager toolchainManager;
  
      private final Provider<MavenSession> sessionProvider;
  
      protected ServiceExecutor(ToolchainManager toolchainManager, Provider<MavenSession> sessionProvider) {
          this.toolchainManager = toolchainManager;
          this.sessionProvider = sessionProvider;
      }
  
      protected final Toolchain getToolchain(Map<String, String> jdkToolchain) {
          Toolchain tc = null;
  
          if (jdkToolchain != null) {
              List<Toolchain> tcs = toolchainManager.getToolchains(sessionProvider.get(), "jdk", jdkToolchain);
              if (tcs != null && !tcs.isEmpty()) {
                  tc = tcs.get(0);
              }
          }
  
          if (tc == null) {
              tc = toolchainManager.getToolchainFromBuildContext("jdk", sessionProvider.get());
          }
  
          return tc;
      }
  
      protected String getJavaExecutable(Map<String, String> jdkToolchain) {
          Toolchain tc = getToolchain(jdkToolchain);
          if (tc != null) {
              LOG.info("Toolchain in maven-pmd-plugin: {}", tc);
              return tc.findTool("java"); // NOI18N
          }
          return null;
      }
  }