/*
 * Created on 26/Fev/2003
 *  
 */
package net.sourceforge.fenixedu.presentationTier.config;

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

import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.EmptyRequiredFieldServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.FenixServiceException;
import net.sourceforge.fenixedu.presentationTier.Action.exceptions.FenixActionException;

import org.apache.struts.Globals;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ExceptionHandler;
import org.apache.struts.config.ExceptionConfig;

/**
 * @author Joćo Mota
 */
public class FenixErrorExceptionHandler extends ExceptionHandler {

    public FenixErrorExceptionHandler() {
	super();
    }

    public ActionForward execute(Exception ex, ExceptionConfig ae, ActionMapping mapping, ActionForm formInstance,
	    HttpServletRequest request, HttpServletResponse response) throws ServletException {

	super.execute(ex, ae, mapping, formInstance, request, response);

	ActionError error = null;
	String property = null;

	// Figure out the error
	ActionForward forward = mapping.getInputForward();
	if (ex instanceof FenixActionException) {
	    FenixActionException fenixActionException = (FenixActionException) ex;
	    error = ((FenixActionException) ex).getError();
	    property = ((FenixActionException) ex).getProperty();
	    forward = fenixActionException.getActionForward() != null ? fenixActionException.getActionForward() : mapping
		    .getInputForward();
	} else if (ex instanceof EmptyRequiredFieldServiceException) {
	    error = new ActionError(ex.getMessage());
	    property = error.getKey();
	} else {
	    String[] args = null;
	    if (ex instanceof FenixServiceException) {
		final FenixServiceException fenixServiceException = (FenixServiceException) ex;
		args = fenixServiceException.getArgs();
	    }
	    if (args == null) {
		error = new ActionError(ae.getKey(), ex.getMessage());
	    } else {
		error = new ActionError(ae.getKey(), args);
	    }
	    property = error.getKey();
	}
	if (ae.getPath() != null && ae.getPath().length() > 0) {
	    forward = new ActionForward(ae.getPath());
	}
	request.setAttribute(Globals.EXCEPTION_KEY, ex);
	super.storeException(request, property, error, forward, ae.getScope());
	return forward;
    }

}