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/**
 * Copyright (C) 2011-2015 The XDocReport Team 
 *
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package org.apache.poi.xwpf.converter.pdf;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;

import org.apache.poi.xwpf.converter.core.AbstractXWPFConverter;
import org.apache.poi.xwpf.converter.core.IXWPFConverter;
import org.apache.poi.xwpf.converter.core.XWPFConverterException;
import org.apache.poi.xwpf.converter.pdf.internal.PdfMapper;
import org.apache.poi.xwpf.usermodel.XWPFDocument;

public class PdfConverter extends AbstractXWPFConverter {

	private static final IXWPFConverter INSTANCE = new PdfConverter();

	public static IXWPFConverter getInstance() {
		return INSTANCE;
	}

	@Override
	protected void doConvert(XWPFDocument document, OutputStream out,
			Writer writer, PdfOptions options) throws XWPFConverterException,
			IOException {
		try {
			// PdfMapper mapper = new PdfMapper( document, out, options );

			// process content
			ByteArrayOutputStream tempOut = new ByteArrayOutputStream();
			PdfMapper mapper = new PdfMapper(document, tempOut, options, null);
			mapper.start();

			if (mapper.useTotalPageField()) {
				// process content a second time, knowing the expected page
				// number
				Integer actualPageCount = Integer
						.valueOf(mapper.getPageCount());
				mapper = new PdfMapper(document, out, options, actualPageCount);
				mapper.start();
			} else {
				out.write(tempOut.toByteArray());
			}

		} catch (Exception e) {
			throw new XWPFConverterException(e);
		}

	}

}