package fr.ifremer.quadrige3.synchro.server.components.behavior;
   
   /*-
    * #%L
    * Quadrige3 Core :: Quadrige3 Synchro server
    * $Id:$
    * $HeadURL:$
    * %%
    * Copyright (C) 2017 Ifremer
   * %%
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Affero General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   * 
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   * 
   * You should have received a copy of the GNU Affero General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   * #L%
   */
  
  
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.wicket.request.IRequestCycle;
  import org.apache.wicket.request.IRequestHandler;
  import org.apache.wicket.request.http.WebResponse;
  
  import java.io.*;
  
  public class FileDownloadRequestHandler implements IRequestHandler {
  	private final Log log = LogFactory.getLog(getClass());
  	private static final int BYTES_DOWNLOAD = 1024;
  	private final File file;
  	private final String fileName;
  
  	public FileDownloadRequestHandler(File file, String fileName) {
  		this.file = file;
  		this.fileName = fileName;
  	}
  
  	@Override
  	public void respond(IRequestCycle requestCycle) {
  
  		WebResponse response = (WebResponse) requestCycle.getResponse();
  
  		// do response
  		try {
  			response.setContentType("application/download");
  			response.setHeader("Content-Disposition", "attachment;filename=" + fileName);
  
  			BufferedInputStream in = new BufferedInputStream(new FileInputStream(file));
  			BufferedOutputStream out = new BufferedOutputStream(response.getOutputStream());
  
  			int read;
  			byte[] bytes = new byte[BYTES_DOWNLOAD];
  			while ((read = in.read(bytes)) != -1) {
  				out.write(bytes, 0, read);
  			}
  			out.flush();
  			out.close();
  			in.close();
  		} catch (IOException e) {
  			log.error(e.getLocalizedMessage());
  			response.sendError(404, null);
  		}
  	}
  
  	@Override
  	public void detach(IRequestCycle requestCycle) {
  	}
  
  }