/*
    * 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.util.internal;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.OutputStreamWriter;
  import java.io.PrintWriter;
  import java.io.Writer;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  
  import static java.nio.charset.StandardCharsets.UTF_8;
  
  /**
   * Dumps a text or exception in dump file.
   * Each call logs a date when it was written to the dump file.
   *
   * @author <a href="mailto:tibordigana@apache.org">Tibor Digana (tibor17)</a>
   * @since 2.20
   */
  public final class DumpFileUtils {
      private DumpFileUtils() {
          throw new IllegalStateException("no instantiable constructor");
      }
  
      /**
       * New dump file. Synchronized object appears in main memory and perfectly visible in other threads.
       *
       * @param reportsDir    only report directory
       * @param dumpFileName    dump file name
       */
      public static synchronized File newDumpFile(File reportsDir, String dumpFileName) {
          reportsDir.mkdirs();
          return new File(reportsDir, dumpFileName);
      }
  
      public static void dumpException(Throwable t, File dumpFile) {
          dumpException(t, null, dumpFile);
      }
  
      public static void dumpException(Throwable t, String msg, File dumpFile) {
          try {
              if (t != null && dumpFile != null && (dumpFile.exists() || mkdirs(dumpFile) && dumpFile.createNewFile())) {
                  try (PrintWriter pw = new PrintWriter(createWriter(dumpFile))) {
                      if (msg != null) {
                          pw.append(msg).append(StringUtils.NL);
                      }
                      t.printStackTrace(pw);
                      pw.append(StringUtils.NL).append(StringUtils.NL);
                  }
              }
          } catch (Exception e) {
              // do nothing
          }
      }
  
      public static void dumpText(String msg, File dumpFile) {
          try {
              if (msg != null
                      && dumpFile != null
                      && (dumpFile.exists() || mkdirs(dumpFile) && dumpFile.createNewFile())) {
                  try (Writer writer = createWriter(dumpFile)) {
                      writer.append(msg).append(StringUtils.NL).append(StringUtils.NL);
                  }
              }
          } catch (Exception e) {
              // do nothing
          }
      }
  
      public static String newFormattedDateFileName() {
          return new SimpleDateFormat("yyyy-MM-dd'T'HH-mm-ss_SSS").format(new Date());
      }
  
      private static Writer createWriter(File dumpFile) throws IOException {
          return new OutputStreamWriter(new FileOutputStream(dumpFile, true), UTF_8)
                  .append("# Created at ")
                  .append(new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS").format(new Date()))
                  .append(StringUtils.NL);
      }
  
     private static boolean mkdirs(File dumpFile) {
         File dir = dumpFile.getParentFile();
         return dir.exists() || dir.mkdirs();
     }
 }