/*
 * FileUploadFilter.java
 *
 * Created on 1. červenec 2007, 22:43
 */

package cz.palat.bs.faces;


import cz.palat.bs.ejb.ConfigurationManager;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.ejb.EJB;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 *
 * @author  pavel
 * @version
 */

public class FileUploadFilter implements Filter {
	@EJB
	private ConfigurationManager conf_manager;
	
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest hRequest = (HttpServletRequest)request;
		//Check whether we're dealing with a multipart request
		boolean was_committed=response.isCommitted();
		
		if (was_committed) {
			System.err.println("Response is already commited: " + hRequest.getRequestURL() + "; URI: " + hRequest.getRequestURI());
		} else {
			try {
				response.setBufferSize(64000);
			} catch (IllegalStateException e) {
				System.err.println("Can't increase response buffer: " + e);
			}
		}
		
		String contentHeader = hRequest.getHeader("content-type");
		boolean isMultipart = ( contentHeader != null &&
			contentHeader.indexOf("multipart/form-data") != -1);
		
		int max_size=5000000;
		String temp_dir="/tmp";
		
		if(isMultipart == false){
			chain.doFilter(request,response);
		}else{
			FileUploadRequestWrapper wrapper =
				new FileUploadRequestWrapper(max_size,temp_dir, hRequest);
			chain.doFilter(wrapper,response);
		}
	}
	
	public void init(FilterConfig filterConfig) throws ServletException {
	}
	
	public void destroy() {
	}
		
}