/*
    * 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.toolchain.java;
  
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.nio.file.Paths;
  
  import org.apache.maven.toolchain.DefaultToolchain;
  import org.apache.maven.toolchain.model.ToolchainModel;
  import org.apache.maven.utils.Os;
  import org.slf4j.Logger;
  
  /**
   * JDK toolchain implementation.
   *
   * @since 2.0.9, renamed from DefaultJavaToolChain in 3.2.4
   */
  public class JavaToolchainImpl extends DefaultToolchain implements JavaToolchain {
      private String javaHome;
  
      public static final String KEY_JAVAHOME = "jdkHome"; // NOI18N
  
      JavaToolchainImpl(ToolchainModel model, Logger logger) {
          super(model, "jdk", logger);
      }
  
      public String getJavaHome() {
          return javaHome;
      }
  
      public void setJavaHome(String javaHome) {
          this.javaHome = javaHome;
      }
  
      public String toString() {
          return "JDK[" + getJavaHome() + "]";
      }
  
      public String findTool(String toolName) {
          Path toRet = findTool(toolName, Paths.get(getJavaHome()).normalize());
          if (toRet != null) {
              return toRet.toAbsolutePath().toString();
          }
          return null;
      }
  
      private static Path findTool(String toolName, Path installDir) {
          Path bin = installDir.resolve("bin"); // NOI18N
          if (Files.isDirectory(bin)) {
              if (Os.IS_WINDOWS) {
                  Path tool = bin.resolve(toolName + ".exe");
                  if (Files.exists(tool)) {
                      return tool;
                  }
              }
              Path tool = bin.resolve(toolName);
              if (Files.exists(tool)) {
                  return tool;
              }
          }
          return null;
      }
  }