package pt.ist.bennu.manager.presentation.actions;

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;

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

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

import pt.ist.bennu.core.domain.RoleType;
import pt.ist.bennu.core.domain.User;
import pt.ist.bennu.core.domain.contents.FunctionalityKey;
import pt.ist.bennu.core.domain.contents.Node;
import pt.ist.bennu.core.domain.contents.NodeContainer;
import pt.ist.bennu.core.domain.groups.EmptyGroup;
import pt.ist.bennu.core.presentation.actions.ContextBaseAction;
import pt.ist.bennu.core.security.UserView;
import pt.ist.renderers.utils.RenderUtils;
import pt.ist.struts.dispatch.annotation.Mapping;
import pt.utl.ist.fenix.tools.util.i18n.MultiLanguageString;

import com.google.common.collect.Table;

@Mapping(path = "/menuConfiguration")
public class MenuConfigurationAction extends ContextBaseAction {
    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
	    throws Exception {
	final User user = UserView.getUser();
	if (user == null || !user.hasRoleType(RoleType.MANAGER)) {
	    throw new Error("unauthorized.access");
	}
	return super.execute(mapping, form, request, response);
    }

    protected ActionForward manageMenus(final NodeContainer parent, final HttpServletRequest request) {
	request.setAttribute("parent", parent);
	return forward(request, "/bennu-manager/manageMenus.jsp");
    }

    /**
     * Entry point class expecting parentId as the externalId of either the
     * virtualHost or the parent node.
     */
    public ActionForward manageMenus(final ActionMapping mapping, final ActionForm form, final HttpServletRequest request,
	    final HttpServletResponse response) throws Exception {
	NodeContainer parent = getDomainObject(request, "parentId");
	return manageMenus(parent, request);
    }

    public final ActionForward addContent(final ActionMapping mapping, final ActionForm form, final HttpServletRequest request,
	    final HttpServletResponse response) throws Exception {
	NodeContainer parent = getDomainObject(request, "parentId");
	request.setAttribute("parent", parent);

	Table<MultiLanguageString, MultiLanguageString, FunctionalityKey> functionalityTable = FunctionalityKey.entries();
	request.setAttribute("functionalities", functionalityTable);

	return forward(request, "/bennu-manager/newContent.jsp");
    }

    public final ActionForward addFunctionality(final ActionMapping mapping, final ActionForm form,
	    final HttpServletRequest request, final HttpServletResponse response) throws UnsupportedEncodingException {
	NodeContainer parent = getDomainObject(request, "parentId");

	String tag = getAttribute(request, "functionality");
	FunctionalityKey functionalityKey = FunctionalityKey.internalize(URLDecoder.decode(tag, "UTF-8"));

	Node.create(parent, functionalityKey, EmptyGroup.getInstance());

	return manageMenus(parent, request);
    }

    public ActionForward prepareEditNode(final ActionMapping mapping, final ActionForm form, final HttpServletRequest request,
	    final HttpServletResponse response) throws Exception {
	final Node node = getDomainObject(request, "nodeId");
	request.setAttribute("node", new NodeBean(node));

	return forward(request, "/bennu-manager/editNode.jsp");
    }

    public ActionForward customizeNode(final ActionMapping mapping, final ActionForm form, final HttpServletRequest request,
	    final HttpServletResponse response) throws Exception {
	final Node node = getDomainObject(request, "nodeId");
	request.setAttribute("node", new NodeBean(node, true));

	return forward(request, "/bennu-manager/editNode.jsp");
    }

    public ActionForward editNode(final ActionMapping mapping, final ActionForm form, final HttpServletRequest request,
	    final HttpServletResponse response) throws Exception {
	NodeBean node = RenderUtils.getRenderedObject("node");
	node.save();
	return manageMenus(node.getNode().getParent(), request);
    }

    public ActionForward deleteNode(final ActionMapping mapping, final ActionForm form, final HttpServletRequest request,
	    final HttpServletResponse response) throws Exception {
	final Node node = getDomainObject(request, "nodeId");
	Node parent = node.getParentNode();
	node.delete();
	return manageMenus(parent, request);
    }
}