content: /*
   * 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.camel.attachment;
  
  import java.io.File;
  
  import jakarta.activation.FileDataSource;
  import jakarta.activation.FileTypeMap;
  
  import org.apache.camel.util.MimeTypeHelper;
  
  /**
   * A {@link FileDataSource} that uses the file name/extension to determine the content-type.
   */
  public class CamelFileDataSource extends FileDataSource {
      private final String fileName;
      private FileTypeMap typeMap;
  
      public CamelFileDataSource(File file) {
          this(file, file.getName());
      }
  
      public CamelFileDataSource(File file, String fileName) {
          super(file);
          this.fileName = fileName;
      }
  
      @Override
      public String getContentType() {
          String answer = MimeTypeHelper.probeMimeType(fileName);
          if (answer == null) {
              if (typeMap == null) {
                  answer = FileTypeMap.getDefaultFileTypeMap().getContentType(fileName);
              } else {
                  answer = typeMap.getContentType(fileName);
              }
          }
          return answer;
      }
  
      @Override
      public void setFileTypeMap(FileTypeMap map) {
          typeMap = map;
      }
  
      @Override
      public String getName() {
          if (fileName != null) {
              return fileName;
          } else {
              return super.getName();
          }
      }
  
  }
  