package net.sourceforge.fenixedu.presentationTier.renderers.actions;

import javax.servlet.http.HttpServletRequest;

import net.sourceforge.fenixedu.applicationTier.IUserView;
import net.sourceforge.fenixedu.applicationTier.Filtro.exception.FenixFilterException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.FenixServiceException;
import net.sourceforge.fenixedu.domain.DomainObject;
import net.sourceforge.fenixedu.domain.RootDomainObject;

import org.apache.struts.action.Action;

public abstract class NavigationAction extends Action {
    public static final String NAVIGATION_SHOW = "show";
    
    protected IUserView getUserView(HttpServletRequest request) {
        return (IUserView) request.getSession().getAttribute("UserView");
    }
    
    protected Class getGivenType(HttpServletRequest request) throws ClassNotFoundException {
        String name = getCompleteTypeName(request.getParameter("type"));
        
        return Class.forName(name);
    }
    
    protected int getGivenOid(HttpServletRequest request) {
        return new Integer(request.getParameter("oid"));
    }
    
    protected String getGivenSchema(HttpServletRequest request) {
        return request.getParameter("schema");
    }
    
    protected String getGivenLayout(HttpServletRequest request) {
        return request.getParameter("layout");
    }

    protected DomainObject getTargetObject(HttpServletRequest request) throws FenixFilterException, FenixServiceException, ClassNotFoundException {
        Integer oid = getGivenOid(request);
        Class type = getGivenType(request);
        return RootDomainObject.getInstance().readDomainObjectByOID(type, oid);
    }
    
    protected String getCompleteTypeName(String typeName) {
        if (typeName.startsWith("net.sourceforge.fenixedu.domain.")) {
            return typeName;
        }
        else {
            return "net.sourceforge.fenixedu.domain." + typeName;
        }
    }
    
    public static String getTypeName(Class type) {
        String typeName = type.getName();
        
        if (typeName.startsWith("net.sourceforge.fenixedu.domain.")) {
            typeName = typeName.substring("net.sourceforge.fenixedu.domain.".length());
        }
        
        return typeName;
    }
}