package net.sourceforge.fenixedu.presentationTier.Action.externalServices;

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

import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.NonExistingServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.externalServices.GroupCheckService;
import net.sourceforge.fenixedu.util.HostAccessControl;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public class GroupCheck extends ExternalInterfaceDispatchAction {

    private static final String NON_EXISTING_GROUP_CODE = "NON_EXISTING_GROUP";

    /**
     * Checks if the user belongs to the group specified in query.
     * 
     * The response has the following format: <RESPONSE_CODE>\n<BOOLEAN_VALUE>
     * 
     * 
     * 
     * <RESPONSE_CODE> = NON_EXISTING_GROUP | SUCESS | NOT_AUTHORIZED |
     * UNEXPECTED_ERROR
     * 
     * <BOOLEAN_VALUE> = true || false
     * 
     * 
     * 
     */
    public ActionForward check(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
	    HttpServletResponse response) throws Exception {
	final String query = request.getParameter("query");

	String responseMessage = "";
	String responseCode;

	if (!HostAccessControl.isAllowed(this, request)) {
	    responseCode = NOT_AUTHORIZED_CODE;
	} else {
	    try {
		Boolean result = (Boolean) GroupCheckService.run(query);

		responseMessage = result.toString().toLowerCase();
		responseCode = SUCCESS_CODE;
	    } catch (NonExistingServiceException e) {
		responseCode = NON_EXISTING_GROUP_CODE;
	    } catch (Exception e) {
		responseCode = UNEXPECTED_ERROR_CODE;
	    }

	}

	writeResponse(response, responseCode, responseMessage);

	return null;
    }

}