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/*
 * 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.reef.io;

import javax.inject.Inject;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.attribute.FileAttribute;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * A TempFileCreator that uses the system's temp directory.
 */
public final class SystemTempFileCreator implements TempFileCreator {
  private static final Logger LOG = Logger.getLogger(SystemTempFileCreator.class.getName());

  @Inject
  public SystemTempFileCreator() {
    LOG.log(Level.FINE, "Temporary files and folders will be created in the system temp folder.");
  }

  @Override
  public File createTempFile(final String prefix, final String suffix) throws IOException {
    final File result = File.createTempFile(prefix, suffix);
    if (LOG.isLoggable(Level.FINEST)) {
      LOG.log(Level.FINEST, "Created temporary file: {0}", result.getAbsolutePath());
    }
    return result;
  }

  @Override
  public File createTempDirectory(final String prefix, final FileAttribute attributes) throws IOException {
    final File result = Files.createTempDirectory(prefix, attributes).toFile();
    if (LOG.isLoggable(Level.FINEST)) {
      LOG.log(Level.FINEST, "Created temporary folder: {0}", result.getAbsolutePath());
    }
    return result;
  }

  @Override
  public File createTempDirectory(final String prefix) throws IOException {
    final File result = Files.createTempDirectory(prefix).toFile();
    if (LOG.isLoggable(Level.FINEST)) {
      LOG.log(Level.FINEST, "Created temporary folder: {0}", result.getAbsolutePath());
    }
    return result;
  }
}