package eu.dnetlib.organizations;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.stereotype.Component;

import eu.dnetlib.organizations.controller.UserInfo;

@Component
public class MyAccessDeniedHandler implements AccessDeniedHandler {

	private static Logger logger = LoggerFactory.getLogger(MyAccessDeniedHandler.class);

	@Override
	public void handle(final HttpServletRequest req, final HttpServletResponse res, final AccessDeniedException e)
		throws IOException, ServletException {

		final Authentication auth = SecurityContextHolder.getContext().getAuthentication();

		if (auth != null) {
			logger.warn(String.format("User '%s' (%s) attempted to access the protected URL: %s", auth.getName(), req.getRemoteAddr(), req.getRequestURI()));
		}

		if (UserInfo.isNotAuthorized(auth)) {
			res.sendRedirect(req.getContextPath() + "/authorizationRequest");
		} else {
			res.sendRedirect(req.getContextPath() + "/alreadyRegistered");
		}
	}

}