/*
    * Copyright 2024 The Netty Project
    *
    * The Netty Project 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:
    *
    *   https://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 io.netty.channel.socket.nio;
  
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.net.SocketAddress;
  import java.nio.file.Path;
  
  final class NioDomainSocketUtil {
  
      private static final Method OF_METHOD;
      private static final Method GET_PATH_METHOD;
  
      static {
          Method ofMethod;
          Method getPathMethod;
          try {
              Class<?> clazz = Class.forName("java.net.UnixDomainSocketAddress");
              ofMethod = clazz.getMethod("of", String.class);
              getPathMethod = clazz.getMethod("getPath");
  
          } catch (Throwable error) {
              ofMethod = null;
              getPathMethod = null;
          }
          OF_METHOD = ofMethod;
          GET_PATH_METHOD = getPathMethod;
      }
  
      static SocketAddress newUnixDomainSocketAddress(String path) {
          if (OF_METHOD == null) {
              throw new IllegalStateException();
          }
          try {
              return (SocketAddress) OF_METHOD.invoke(null, path);
          } catch (IllegalAccessException | InvocationTargetException e) {
              throw new IllegalStateException(e);
          }
      }
  
      static void deleteSocketFile(SocketAddress address) {
          if (GET_PATH_METHOD == null) {
              throw new IllegalStateException();
          }
          try {
              Path path = (Path) GET_PATH_METHOD.invoke(address);
              if (path != null) {
                  path.toFile().delete();
              }
          } catch (IllegalAccessException | InvocationTargetException e) {
              throw new IllegalStateException(e);
          }
      }
  
      private NioDomainSocketUtil() { }
  }