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Easier Google Drive API

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/*
* Copyright 2014 Objectos, Fábrica de Software LTDA.
*
* Licensed 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 br.com.objectos.way.gdrive;

import java.io.File;
import java.io.InputStream;

import com.google.api.client.http.AbstractInputStreamContent;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.InputStreamContent;

/**
 * @author [email protected] (Mario Marques Junior)
 */
abstract class From {

  From() {
  }

  abstract AbstractInputStreamContent mediaContentOf(String mimeType);

  static From of(File file) {
    return new FromFile(file);
  }

  static From of(InputStream inputStream) {
    return new FromInputStream(inputStream);
  }

  static class FromFile extends From {

    private final File file;

    FromFile(File file) {
      this.file = file;
    }

    @Override
    AbstractInputStreamContent mediaContentOf(String mimeType) {
      return new FileContent(mimeType, file);
    }

  }

  static class FromInputStream extends From {

    private final InputStream inputStream;

    FromInputStream(InputStream inputStream) {
      this.inputStream = inputStream;
    }

    @Override
    AbstractInputStreamContent mediaContentOf(String mimeType) {
      return new InputStreamContent(mimeType, inputStream);
    }

  }

}