/*
 * eGov suite of products aim to improve the internal efficiency,transparency,
 *    accountability and the service delivery of the government  organizations.
 *
 *     Copyright (C) <2015>  eGovernments Foundation
 *
 *     The updated version of eGov suite of products as by eGovernments Foundation
 *     is available at http://www.egovernments.org
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     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 General Public License
 *     along with this program. If not, see http://www.gnu.org/licenses/ or
 *     http://www.gnu.org/licenses/gpl.html .
 *
 *     In addition to the terms of the GPL license to be adhered to in using this
 *     program, the following additional terms are to be complied with:
 *
 *         1) All versions of this program, verbatim or modified must carry this
 *            Legal Notice.
 *
 *         2) Any misrepresentation of the origin of the material is prohibited. It
 *            is required that all modified versions of this material be marked in
 *            reasonable ways as different from the original version.
 *
 *         3) This license does not grant any rights to any user of the program
 *            with regards to rights under trademark law for use of the trade names
 *            or trademarks of eGovernments Foundation.
 *
 *   In case of any queries, you can reach eGovernments Foundation at contact@egovernments.org.
 */

package org.egov.restapi.filter;

import org.apache.commons.io.IOUtils;

import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;

public class MultiReadHttpServletRequest extends HttpServletRequestWrapper {
	  private ByteArrayOutputStream cachedBytes;

	  public MultiReadHttpServletRequest(HttpServletRequest request) {
	    super(request);
	  }

	  @Override
	  public ServletInputStream getInputStream() throws IOException {
	    if (cachedBytes == null)
	      cacheInputStream();

	      return new CachedServletInputStream();
	  }

	  @Override
	  public BufferedReader getReader() throws IOException{
	    return new BufferedReader(new InputStreamReader(getInputStream()));
	  }

	  private void cacheInputStream() throws IOException {
	    /* Cache the inputstream in order to read it multiple times. For
	     * convenience, I use apache.commons IOUtils
	     */
	    cachedBytes = new ByteArrayOutputStream();
	    IOUtils.copy(super.getInputStream(), cachedBytes);
	  }


public class CachedServletInputStream extends ServletInputStream {
    private ByteArrayInputStream input;

    public CachedServletInputStream() {
      /* create a new input stream from the cached request body */
      input = new ByteArrayInputStream(cachedBytes.toByteArray());
    }

    @Override
    public int read() throws IOException {
      return input.read();
    }

	@Override
	public boolean isFinished() {

		return false;
	}

	@Override
	public boolean isReady() {

		return true;
	}

	@Override
	public void setReadListener(ReadListener readListener) {

		
	}
  }
}
	

	

	    /* wrap the request in order to read the inputstream multiple times */
	  //  MultiReadHttpServletRequest multiReadRequest = new MultiReadHttpServletRequest((HttpServletRequest) request);