EDIT

/**

* Copyright (C) 2017 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.vaadin.security;

import java.io.Serializable;

import java.util.EnumSet;

import org.apache.log4j.Logger;

import org.springframework.context.annotation.Profile;

import com.vaadin.server.FontAwesome;

import com.vaadin.server.VaadinSession;

import com.vaadin.spring.annotation.SpringComponent;

import com.vaadin.spring.annotation.UIScope;

import com.vaadin.ui.AbstractComponentContainer;

import com.vaadin.ui.Button;

import com.vaadin.ui.themes.ValoTheme;

import eu.etaxonomy.cdm.model.common.CdmBase;

import eu.etaxonomy.cdm.persistence.hibernate.permission.CRUD;

/**

 * PermissionDebugUtils provide the following tools:

 * <ul>

 *   <li>{@link #addGainPerEntityPermissionButton(AbstractComponentContainer, Class, Integer, EnumSet)}:

 *   A button which gives a per entity authority to the current user.</li>

 * </ul>

 *

 *

 *

 * To enable the PermissionDebugUtils you need to activate the spring profile <code>debug</code>. You can add

 * <code>-Dspring.profiles.active=debug</code> to the command starting the jvm

 * or set this as an environment variable.

 *

 * @author a.kohlbecker

 * @since Oct 11, 2017

 *

 */

@SpringComponent

@UIScope

@Profile("debug")

public class PermissionDebugUtils implements Serializable {

    private static final long serialVersionUID = -210079304170235459L;

    private final static Logger logger = Logger.getLogger(PermissionDebugUtils.class);

    public static final String VADDIN_SESSION_KEY = "PERMISSION_DEBUG_UTILS";

    public static final String SYSTEM_PROP_KEY = "GainPerEntityPermissionButtons";

    public PermissionDebugUtils() {

        VaadinSession.getCurrent().setAttribute(VADDIN_SESSION_KEY, this);

    }

    public static PermissionDebugUtils fromSession() {

        return (PermissionDebugUtils)VaadinSession.getCurrent().getAttribute(VADDIN_SESSION_KEY);

     }

    public static Button addGainPerEntityPermissionButton(AbstractComponentContainer toContainer, Class<? extends CdmBase> cdmType,

            Integer entitiyId, EnumSet<CRUD> crud, String property){

        PermissionDebugUtils pu = PermissionDebugUtils.fromSession();

        if(pu != null){

            Button button = pu.gainPerEntityPermissionButton(cdmType, entitiyId, crud, property);

            if(button != null){

                toContainer.addComponent(button);

            }

            return button;

        }

        return null;

    }

    public Button gainPerEntityPermissionButton(Class<? extends CdmBase> cdmType, Integer entitiyId, EnumSet<CRUD> crud, String property){

       Button button = new Button(FontAwesome.BOLT);

       button.addClickListener(e -> UserHelper.fromSession().createAuthorityFor(UserHelper.fromSession().userName(), cdmType, entitiyId, crud, property));

       button.addStyleName(ValoTheme.BUTTON_DANGER);

       return button;

    }

}