import java.io.IOException;

import java.io.Writer;

import java.util.Set;

import javax.servlet.ServletException;

import org.apache.felix.scr.annotations.Reference;

import org.apache.felix.scr.annotations.sling.SlingServlet;

import org.apache.sling.api.SlingHttpServletRequest;

import org.apache.sling.api.SlingHttpServletResponse;

import org.apache.sling.api.servlets.SlingSafeMethodsServlet;

import org.apache.sling.settings.SlingSettingsService;

@SlingServlet(paths="/bin/outputrunmodes")

@SuppressWarnings("serial")

public class RunmodeOutputServlet extends SlingSafeMethodsServlet {

    @Reference

    private SlingSettingsService settingsService;

    @Override

    protected void doGet(SlingHttpServletRequest request,

            SlingHttpServletResponse response) throws ServletException,

            IOException {

        response.setContentType("text/plain");

        final Set<String> runmodes = settingsService.getRunModes();

        Writer w = response.getWriter();

        w.write("Current runmodes:\n");

        for (String runmode : runmodes) {

            w.write(runmode);

            w.write("\n");

        }

        w.flush();

    }

}

//For client side run mode check you can use

//https://github.com/davidegiannella/cq-misc/blob/master/EditMode.js or $.cq.isAuthor() or http://labs.sixdimensions.com/blog/2013-04-02/what-my-cq-mode/