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SignService Integration PDF Processing

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/*
 * Copyright 2019-2020 IDsec Solutions AB
 *
 * 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 se.idsec.signservice.integration.document.pdf;

import java.util.Base64;

import se.idsec.signservice.integration.core.error.ErrorCode;
import se.idsec.signservice.integration.document.DocumentDecoder;
import se.idsec.signservice.integration.document.DocumentEncoder;
import se.idsec.signservice.integration.document.DocumentProcessingException;

/**
 * Encoder/decoder for PDF documents.
 * 
 * @author Martin Lindström ([email protected])
 * @author Stefan Santesson ([email protected])
 */
public class PdfDocumentEncoderDecoder implements DocumentDecoder, DocumentEncoder {

  /** {@inheritDoc} */
  @Override
  public byte[] decodeDocument(final String content) throws DocumentProcessingException {
    try {
      return Base64.getDecoder().decode(content);
    }
    catch (Exception e) {
      throw new DocumentProcessingException(new ErrorCode.Code("decode"), "Failed to load PDF object", e);
    }
  }

  /** {@inheritDoc} */
  @Override
  public String encodeDocument(final byte[] document) throws DocumentProcessingException {
    try {
      return Base64.getEncoder().encodeToString(document);
    }
    catch (Exception e) {
      throw new DocumentProcessingException(new ErrorCode.Code("encode"), "Failed to encode PDF object", e);
    }
  }
  
}