/*
    * 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.surefire.api.booter;
  
  import java.io.File;
  
  import org.apache.maven.surefire.api.util.internal.DumpFileUtils;
  
  import static org.apache.maven.surefire.api.util.internal.DumpFileUtils.newDumpFile;
  
  /**
   * Dumps lost commands and caused exceptions in forked JVM. <br>
   * Fail-safe.
   *
   * @author <a href="mailto:tibordigana@apache.org">Tibor Digana (tibor17)</a>
   * @since 2.20
   */
  public final class DumpErrorSingleton {
      public static final String DUMP_FILE_EXT = ".dump";
      public static final String DUMPSTREAM_FILE_EXT = ".dumpstream";
      private static final DumpErrorSingleton SINGLETON = new DumpErrorSingleton();
  
      private File dumpFile;
      private File dumpStreamFile;
      private File binaryDumpStreamFile;
  
      private DumpErrorSingleton() {}
  
      public static DumpErrorSingleton getSingleton() {
          return SINGLETON;
      }
  
      public synchronized void init(File reportsDir, String dumpFileName) {
          dumpFile = createDumpFile(reportsDir, dumpFileName);
          dumpStreamFile = createDumpStreamFile(reportsDir, dumpFileName);
          String fileNameWithoutExtension =
                  dumpFileName.contains(".") ? dumpFileName.substring(0, dumpFileName.lastIndexOf('.')) : dumpFileName;
          binaryDumpStreamFile = newDumpFile(reportsDir, fileNameWithoutExtension + "-commands.bin");
      }
  
      public synchronized File dumpException(Throwable t, String msg) {
          DumpFileUtils.dumpException(t, msg == null ? "null" : msg, dumpFile);
          return dumpFile;
      }
  
      public synchronized File dumpException(Throwable t) {
          DumpFileUtils.dumpException(t, dumpFile);
          return dumpFile;
      }
  
      public synchronized File dumpText(String msg) {
          DumpFileUtils.dumpText(msg == null ? "null" : msg, dumpFile);
          return dumpFile;
      }
  
      public synchronized File dumpStreamException(Throwable t, String msg) {
          DumpFileUtils.dumpException(t, msg == null ? "null" : msg, dumpStreamFile);
          return dumpStreamFile;
      }
  
      public synchronized File dumpStreamException(Throwable t) {
          DumpFileUtils.dumpException(t, dumpStreamFile);
          return dumpStreamFile;
      }
  
      public synchronized File dumpStreamText(String msg) {
          DumpFileUtils.dumpText(msg == null ? "null" : msg, dumpStreamFile);
          return dumpStreamFile;
      }
  
      public File getCommandStreamBinaryFile() {
          return binaryDumpStreamFile;
      }
  
      private File createDumpFile(File reportsDir, String dumpFileName) {
          return newDumpFile(reportsDir, dumpFileName + DUMP_FILE_EXT);
      }
  
      private File createDumpStreamFile(File reportsDir, String dumpFileName) {
          return newDumpFile(reportsDir, dumpFileName + DUMPSTREAM_FILE_EXT);
      }
  }