/**
    * This file Copyright (c) 2015 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.cache.browser.app;
  
  import info.magnolia.cache.browser.app.event.InitializeContainerAfterSuccessfulLoginEvent;
  import info.magnolia.context.Context;
  import info.magnolia.context.MgnlContext;
  import info.magnolia.event.EventBus;
  import info.magnolia.module.cache.app.CacheApp;
  import info.magnolia.objectfactory.ComponentProvider;
  import info.magnolia.ui.api.app.AppContext;
  import info.magnolia.ui.api.app.AppEventBus;
  import info.magnolia.ui.api.app.AppView;
  import info.magnolia.ui.api.app.SubAppDescriptor;
  import info.magnolia.ui.api.location.DefaultLocation;
  import info.magnolia.ui.api.location.Location;
  import info.magnolia.ui.contentapp.browser.BrowserLocation;
  import info.magnolia.ui.dialog.formdialog.FormDialogPresenter;
  import info.magnolia.ui.dialog.formdialog.FormDialogPresenterFactory;
  import info.magnolia.ui.form.EditorCallback;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  
  import com.vaadin.data.util.PropertysetItem;
  
  /**
   * Browser cache app implementation. Also opens a login dialog when cache browser subApp is requested.
   */
  public class BrowserCacheApp extends CacheApp {
  
      private static final String DIALOG_ID = "cache-browser-app:restLogin";
  
      private final EventBus eventBus;
      private final FormDialogPresenterFactory formDialogPresenterFactory;
  
      @Inject
      public BrowserCacheApp(AppContext appContext, AppView view, ComponentProvider componentProvider, @Named(AppEventBus.NAME) EventBus eventBus, FormDialogPresenterFactory formDialogPresenterFactory) {
          super(appContext, view, componentProvider);
          this.eventBus = eventBus;
          this.formDialogPresenterFactory = formDialogPresenterFactory;
      }
  
      @Override
      public void locationChanged(final Location location) {
          if (location instanceof BrowserLocation) {
              if (MgnlContext.hasAttribute("cache.browser.app.username", Context.SESSION_SCOPE) && MgnlContext.hasAttribute("cache.browser.app.password", Context.SESSION_SCOPE)) {
                  super.locationChanged(location);
              } else {
                  final FormDialogPresenter formDialogPresenter = formDialogPresenterFactory.createFormDialogPresenter(DIALOG_ID);
                  final PropertysetItem item = new PropertysetItem();
                  formDialogPresenter.start(item, DIALOG_ID, getAppContext(), new EditorCallback() {
                      @Override
                      public void onSuccess(String s) {
                          BrowserCacheApp.super.locationChanged(location);
                          String username = (String) item.getItemProperty("username").getValue();
                          String password = (String) item.getItemProperty("password").getValue();
                          MgnlContext.setAttribute("cache.browser.app.username", username, Context.SESSION_SCOPE);
                          MgnlContext.setAttribute("cache.browser.app.password", password, Context.SESSION_SCOPE);
                          eventBus.fireEvent(new InitializeContainerAfterSuccessfulLoginEvent(username, password));
                          formDialogPresenter.closeDialog();
                      }
  
                      @Override
                      public void onCancel() {
                          SubAppDescriptor subAppDescriptor = getAppContext().getAppDescriptor().getSubApps().values().iterator().next();
                          BrowserCacheApp.super.locationChanged(new DefaultLocation(Location.LOCATION_TYPE_APP, getAppContext().getAppDescriptor().getName(), subAppDescriptor.getName()));
                          formDialogPresenter.closeDialog();
                     }
                 });
             }
         } else {
             super.locationChanged(location);
         }
     }
 
     @Override
     public void stop() {
         super.stop();
         MgnlContext.removeAttribute("cache.browser.app.username", Context.SESSION_SCOPE);
         MgnlContext.removeAttribute("cache.browser.app.password", Context.SESSION_SCOPE);
     }
 }