/**
* Copyright 2013 European Parliament
*
* Licensed under the EUPL, Version 1.1 or - as soon they will be approved by the European Commission - subsequent versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
* You may obtain a copy of the Licence at:
*
* http://joinup.ec.europa.eu/software/page/eupl
*
* Unless required by applicable law or agreed to in writing, software distributed under the Licence is distributed on an "AS IS" basis,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the Licence for the specific language governing permissions and limitations under the Licence.
*/
package org.nsesa.editor.gwt.an.amendments.server.service;
import com.lowagie.text.DocumentException;
import freemarker.ext.dom.NodeModel;
import freemarker.template.Configuration;
import freemarker.template.TemplateException;
import org.nsesa.server.dto.AmendmentContainerDTO;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.Resource;
import org.springframework.stereotype.Service;
import org.xhtmlrenderer.pdf.ITextRenderer;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import javax.servlet.http.HttpServletResponse;
import javax.xml.parsers.ParserConfigurationException;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;
/**
* Export the amendment container in pdf format
*
* @author <a href="mailto:stelian.groza@gmail.com">Stelian Groza</a>
* Date: 29/04/13 13:38
*/
@Service
public class PdfExportService implements ExportService<AmendmentContainerDTO> {
@Value("classpath:/export/pdfAmendmentTemplate.ftl")
private Resource template;
@Value("${editor.url}")
private String editorUrl;
@Override
public void export(AmendmentContainerDTO object, HttpServletResponse response) {
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "attachment;filename=" + object.getAmendmentContainerID() + ".pdf");
response.setCharacterEncoding("UTF8");
final String content = object.getBody();
final InputSource inputSource;
try {
byte[] bytes = content.getBytes("utf-8");
inputSource = new InputSource(new ByteArrayInputStream(bytes));
final NodeModel model = NodeModel.parse(inputSource);
final Configuration configuration = new Configuration();
configuration.setDefaultEncoding("UTF-8");
configuration.setDirectoryForTemplateLoading(template.getFile().getParentFile());
final StringWriter sw = new StringWriter();
Map<String, Object> root = new HashMap<String, Object>();
root.put("amendment", model);
configuration.getTemplate(template.getFile().getName()).process(root, sw);
ITextRenderer renderer = new ITextRenderer();
renderer.setDocumentFromString(sw.toString(), editorUrl + "/");
renderer.layout();
renderer.createPDF(response.getOutputStream());
response.setContentLength(sw.toString().length());
response.flushBuffer();
} catch (IOException e) {
throw new RuntimeException("Could not read file.", e);
} catch (SAXException e) {
throw new RuntimeException("Could not parse file.", e);
} catch (ParserConfigurationException e) {
throw new RuntimeException("Could not parse file.", e);
} catch (TemplateException e) {
throw new RuntimeException("Could not load template.", e);
} catch (DocumentException e) {
throw new RuntimeException("Export to pdf failed", e);
}
}
}