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.presentationTier.Action.sop.utils.ServiceUtils;
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) ServiceUtils.executeService(null, "GroupCheckService",
                        new Object[] { 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;
    }

}