package net.curisit.securis;

import java.io.IOException;

import javax.enterprise.context.ApplicationScoped;
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.annotation.WebFilter;
import javax.servlet.http.HttpServletResponse;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

@ApplicationScoped
@WebFilter(urlPatterns = "*.gz")
public class GzipFilter implements Filter {

	@SuppressWarnings("unused")
	private static final Logger LOG = LogManager.getLogger(GzipFilter.class);

	@Override
	public void init(FilterConfig fc) throws ServletException {
	}

	@Override
	public void doFilter(ServletRequest sreq, ServletResponse sres, FilterChain fc) throws IOException, ServletException {
		//HttpServletRequest req = (HttpServletRequest) sreq;
		HttpServletResponse res = (HttpServletResponse) sres;
		res.addHeader("Content-Encoding", "gzip");
		// LOG.info("Content served as gzip: {}", req.getRequestURI());
		fc.doFilter(sreq, sres);
	}

	@Override
	public void destroy() {
	}

}