/*
    * Copyright (C) 2003-2008 eXo Platform SAS.
    *
    * This program is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Affero General Public License
    * as published by the Free Software Foundation; either version 3
    * of the License, or (at your option) any later version.
    *
    * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see<http://www.gnu.org/licenses/>.
   */
  package org.exoplatform.ecm.webui.component.explorer;
  
  import java.util.ArrayList;
  import java.util.Comparator;
  import java.util.List;
  import java.util.MissingResourceException;
  import java.util.ResourceBundle;
  import java.util.stream.Collectors;
  
  import javax.jcr.AccessDeniedException;
  import javax.jcr.NoSuchWorkspaceException;
  import javax.jcr.Node;
  import javax.jcr.Session;
  import javax.servlet.http.Cookie;
  import javax.servlet.http.HttpServletRequest;
  
  import org.exoplatform.container.definition.PortalContainerConfig;
  import org.exoplatform.container.xml.PortalContainerInfo;
  import org.exoplatform.ecm.jcr.model.Preference;
  import org.exoplatform.ecm.webui.component.explorer.control.UIActionBar;
  import org.exoplatform.ecm.webui.component.explorer.control.UIAddressBar;
  import org.exoplatform.ecm.webui.component.explorer.control.UIControl;
  import org.exoplatform.ecm.webui.component.explorer.popup.actions.UIDocumentForm;
  import org.exoplatform.ecm.webui.component.explorer.popup.actions.UIDocumentFormController;
  import org.exoplatform.ecm.webui.component.explorer.sidebar.UIAllItems;
  import org.exoplatform.ecm.webui.component.explorer.sidebar.UISideBar;
  import org.exoplatform.ecm.webui.component.explorer.sidebar.UITreeExplorer;
  import org.exoplatform.ecm.webui.utils.JCRExceptionManager;
  import org.exoplatform.ecm.webui.utils.Utils;
  import org.exoplatform.portal.webui.util.Util;
  import org.exoplatform.services.cms.BasePath;
  import org.exoplatform.services.cms.documents.AutoVersionService;
  import org.exoplatform.services.cms.drives.DriveData;
  import org.exoplatform.services.cms.drives.ManageDriveService;
  import org.exoplatform.services.cms.drives.impl.ManageDriveServiceImpl;
  import org.exoplatform.services.cms.views.ManageViewService;
  import org.exoplatform.services.jcr.RepositoryService;
  import org.exoplatform.services.jcr.core.ManageableRepository;
  import org.exoplatform.services.jcr.ext.hierarchy.NodeHierarchyCreator;
  import org.exoplatform.services.organization.OrganizationService;
  import org.exoplatform.services.organization.User;
  import org.exoplatform.services.security.ConversationState;
  import org.exoplatform.services.wcm.core.NodetypeConstant;
  import org.exoplatform.services.wcm.utils.WCMCoreUtils;
  import org.exoplatform.web.application.ApplicationMessage;
  import org.exoplatform.web.application.RequestContext;
  import org.exoplatform.webui.config.annotation.ComponentConfig;
  import org.exoplatform.webui.config.annotation.EventConfig;
  import org.exoplatform.webui.core.UIApplication;
  import org.exoplatform.webui.core.UIComponent;
  import org.exoplatform.webui.core.UIContainer;
  import org.exoplatform.webui.event.Event;
  import org.exoplatform.webui.event.EventListener;
  
  /**
   * Created by The eXo Platform SARL
   * Author : Dang Van Minh
   *          minh.dang@exoplatform.com
   * Oct 21, 2009
   * 9:58:02 AM
   */
  @ComponentConfig (
      template =  "app:/groovy/webui/component/explorer/UIDrivesArea.gtmpl",
      events = {
          @EventConfig(listeners = UIDrivesArea.SelectDriveActionListener.class)
      }
  )
  public class UIDrivesArea extends UIContainer {
  
    final public static String FIELD_SELECTREPO = "selectRepo" ;
    private boolean firstVisit = true;
    private List<String> userRoles_ = null;
  
    public UIDrivesArea() throws Exception {
    }
  
    public void setFirstVisit(boolean firstVisit) {
      this.firstVisit = firstVisit;
    }
  
    public boolean isFirstVisit() {
      return firstVisit;
    }
 
   public String getLabel(String id)  {
     RequestContext context = RequestContext.getCurrentInstance();
     ResourceBundle res = context.getApplicationResourceBundle();
     String userDisplayName = "";
     if (ManageDriveServiceImpl.USER_DRIVE_NAME.equals(id)) {
       RequestContext ctx = Util.getPortalRequestContext();
       if (ctx != null) {
         String username = ctx.getRemoteUser();
         try {
           User user = this.getApplicationComponent(OrganizationService.class).getUserHandler().findUserByName(username);
           if (user != null) {
             userDisplayName = user.getDisplayName();
           }
         } catch (Exception ex) {
           userDisplayName = username;
         }
       }
     }
     try {
       return res.getString("Drives.label." + id.replace(" ", "")).replace("{0}", userDisplayName);
     } catch (MissingResourceException ex) {
       return id;
     }
   }
 
   public String getGroupLabel(DriveData driveData) {
     try {
       RepositoryService repoService = WCMCoreUtils.getService(RepositoryService.class);
       NodeHierarchyCreator nodeHierarchyCreator = WCMCoreUtils.getService(NodeHierarchyCreator.class);
       String groupPath = nodeHierarchyCreator.getJcrPath(BasePath.CMS_GROUPS_PATH);
       Node groupNode = (Node)WCMCoreUtils.getSystemSessionProvider().getSession(
                                     repoService.getCurrentRepository().getConfiguration().getDefaultWorkspaceName(),
                                     repoService.getCurrentRepository()).getItem(
                                             groupPath + driveData.getName().replace(".", "/"));
       return groupNode.getProperty(NodetypeConstant.EXO_LABEL).getString();
     } catch(Exception e) {
       return driveData.getName().replace(".", " / ");
     }
   }
 
   public String getGroupLabel(String groupId, boolean isFull) {
     String ret = groupId.replace(".", " / ");
     if (!isFull) {
       if (ret.startsWith(" / spaces")) {
         return ret.substring(ret.lastIndexOf("/") + 1).trim();
       }
       int count = 0;
       int slashPosition = -1;
       for (int i = 0; i < ret.length(); i++) {
         if ('/' == ret.charAt(i)) {
           if (++count == 4) {
             slashPosition = i;
             break;
           }
         }
       }
       if (slashPosition > 0) {
         ret = ret.substring(0, slashPosition) + "...";
       } else if (ret.length() > 70) {
         ret = ret.substring(0, 70) + "...";
       }
     }
     return ret;
   }
 
   public String getPortalName() {
     PortalContainerInfo containerInfo = WCMCoreUtils.getService(PortalContainerInfo.class);
     return containerInfo.getContainerName();
   }
 
   public String getRestName() {
     PortalContainerConfig portalContainerConfig = this.getApplicationComponent(PortalContainerConfig.class);
     return portalContainerConfig.getRestContextName(this.getPortalName());
   }
 
   private List<String> getUserRoles(boolean newRoleUpdated) throws Exception {
     ManageDriveService driveService = getApplicationComponent(ManageDriveService.class);
     if (userRoles_ == null || (userRoles_ != null && newRoleUpdated)) {
       userRoles_ = Utils.getMemberships();
       if(newRoleUpdated) driveService.setNewRoleUpdated(false);
     }
     return userRoles_;
   }
 
   public List<DriveData> mainDrives() throws Exception {
     ManageDriveService driveService = getApplicationComponent(ManageDriveService.class);
     List<String> userRoles = getUserRoles(false);
     String userId = Util.getPortalRequestContext().getRemoteUser();
     return driveService.getMainDrives(userId, userRoles)
                        .stream()
                        .peek(x -> x.setLabel(getLabel(x.getName())))
                        .sorted(Comparator.comparing(DriveData::getLabel))
                        .collect(Collectors.toList());
   }
 
   public List<DriveData> groupDrives() throws Exception {
     ManageDriveService driveService = getApplicationComponent(ManageDriveService.class);
     List<String> userRoles = getUserRoles(driveService.newRoleUpdated());
     String userId = Util.getPortalRequestContext().getRemoteUser();
     return driveService.getGroupDrives(userId, userRoles)
                        .stream()
                        .peek(x -> x.setLabel(getGroupLabel(x)))
                        .sorted(Comparator.comparing(DriveData::getLabel))
                        .collect(Collectors.toList());
   }
 
   public List<DriveData> personalDrives() throws Exception {
     ManageDriveService driveService = getApplicationComponent(ManageDriveService.class);
     String userId = Util.getPortalRequestContext().getRemoteUser();
     return driveService.getPersonalDrives(userId)
                        .stream()
                        .peek(x -> x.setLabel(getLabel(x.getName())))
                        .sorted(Comparator.comparing(DriveData::getLabel))
                        .collect(Collectors.toList());
   }
 
   static  public class SelectDriveActionListener extends EventListener<UIDrivesArea> {
     public void execute(Event<UIDrivesArea> event) throws Exception {
       UIDrivesArea uiDrivesArea = event.getSource();
       String driveName = event.getRequestContext().getRequestParameter(OBJECTID);
       RepositoryService rservice = uiDrivesArea.getApplicationComponent(RepositoryService.class);
       ManageDriveService dservice = uiDrivesArea.getApplicationComponent(ManageDriveService.class);
       DriveData drive = dservice.getDriveByName(driveName);
       String userId = Util.getPortalRequestContext().getRemoteUser();
       UIApplication uiApp = uiDrivesArea.getAncestorOfType(UIApplication.class);
       List<String> viewList = new ArrayList<String>();
       for(String role : Utils.getMemberships()){
         for(String viewName : drive.getViews().split(",")) {
           if (!viewList.contains(viewName.trim())) {
             Node viewNode = uiDrivesArea.getApplicationComponent(ManageViewService.class)
                                         .getViewByName(viewName.trim(), WCMCoreUtils.getSystemSessionProvider());
             String permiss = viewNode.getProperty("exo:accessPermissions").getString();
             if(permiss.contains("${userId}")) permiss = permiss.replace("${userId}", userId);
             String[] viewPermissions = permiss.split(",");
             if(permiss.equals("*")) viewList.add(viewName.trim());
             if(drive.hasPermission(viewPermissions, role)) viewList.add(viewName.trim());
           }
         }
       }
       if(viewList.isEmpty()) {
         Object[] args = { driveName };
         uiApp.addMessage(new ApplicationMessage("UIDrivesArea.msg.no-view-found", args));
 
         return;
       }
       StringBuffer viewListStr = new StringBuffer();
       for (String viewName : viewList) {
         if (viewListStr.length() > 0)
           viewListStr.append(",").append(viewName);
         else
           viewListStr.append(viewName);
       }
       drive.setViews(viewListStr.toString());
       String homePath = drive.getHomePath();
       if(homePath.contains("${userId}")) {
         homePath = org.exoplatform.services.cms.impl.Utils.getPersonalDrivePath(homePath, userId);
         if (drive.getParameters().get(ManageDriveServiceImpl.DRIVE_PARAMATER_USER_ID) == null) {
           drive.getParameters().put(ManageDriveServiceImpl.DRIVE_PARAMATER_USER_ID, homePath);
         }
       }
       UIJCRExplorerPortlet uiParent = uiDrivesArea.getAncestorOfType(UIJCRExplorerPortlet.class);
       uiParent.setFlagSelect(true);
       UIJcrExplorerContainer explorerContainer = uiParent.getChild(UIJcrExplorerContainer.class);
       UIJCRExplorer uiJCRExplorer = explorerContainer.getChild(UIJCRExplorer.class);
       UITreeExplorer uiTreeExplorer = uiJCRExplorer.findFirstComponentOfType(UITreeExplorer.class);      
 
 
       Preference pref = uiJCRExplorer.getPreference();
       // check if Preferences has View-Side-Bar property to be true or not. if true, set TRUE for setViewSideBar() 
       if (!pref.isShowSideBar())
         pref.setShowSideBar(drive.getViewSideBar());
       pref.setShowPreferenceDocuments(drive.getViewPreferences());
       pref.setAllowCreateFoder(drive.getAllowCreateFolders());
       HttpServletRequest request = Util.getPortalRequestContext().getRequest();
       Cookie[] cookies = request.getCookies();
       Cookie getCookieForUser = UIJCRExplorer.getCookieByCookieName(Preference.PREFERENCE_SHOW_HIDDEN_NODE, cookies);
       if (uiJCRExplorer.findFirstComponentOfType(UIAllItems.class) == null || getCookieForUser == null) {
         pref.setShowHiddenNode(drive.getShowHiddenNode());
       }
       if (getCookieForUser == null) {
         pref.setShowNonDocumentType(drive.getViewNonDocument());
       }
       uiJCRExplorer.setDriveData(drive);
       uiJCRExplorer.setIsReferenceNode(false);
       uiJCRExplorer.setPreferencesSaved(true);
       uiJCRExplorer.clearTagSelection();
 
       ManageableRepository repository = rservice.getCurrentRepository();
       try {
         Session session = WCMCoreUtils.getUserSessionProvider().getSession(drive.getWorkspace(), repository);
         /**
          *  check if it exists. we assume that the path is a real path
          */
         session.getItem(homePath);
       } catch(AccessDeniedException ace) {
         Object[] args = { driveName };
         uiApp.addMessage(new ApplicationMessage("UIDrivesArea.msg.access-denied", args,
             ApplicationMessage.WARNING));
 
         return;
       } catch(NoSuchWorkspaceException nosuchWS) {
         Object[] args = { driveName };
         uiApp.addMessage(new ApplicationMessage("UIDrivesArea.msg.workspace-not-exist", args,
             ApplicationMessage.WARNING));
 
         return;
       } catch(Exception e) {
         JCRExceptionManager.process(uiApp, e);
         return;
       }
       uiJCRExplorer.clearNodeHistory(homePath);
       uiJCRExplorer.setRepositoryName(repository.getConfiguration().getName());
       uiJCRExplorer.setWorkspaceName(drive.getWorkspace());
       uiJCRExplorer.setRootPath(homePath);
       uiJCRExplorer.setSelectNode(drive.getWorkspace(), homePath);
       String selectedView = viewList.get(0);
       UIControl uiControl = uiJCRExplorer.getChild(UIControl.class).setRendered(true);
       UIWorkingArea uiWorkingArea = uiJCRExplorer.getChild(UIWorkingArea.class);
       UIActionBar uiActionbar = uiWorkingArea.getChild(UIActionBar.class);
       uiActionbar.setTabOptions(selectedView);
       UIAddressBar uiAddressBar = uiControl.getChild(UIAddressBar.class);
       uiAddressBar.setViewList(viewList);
       uiAddressBar.setSelectedViewName(selectedView);
       uiWorkingArea.getChild(UISideBar.class).initialize();
       for(UIComponent uiComp : uiWorkingArea.getChildren()) {
         if(uiComp instanceof UIDrivesArea) uiComp.setRendered(false);
         else uiComp.setRendered(true);
       }
       UIDocumentWorkspace uiDocumentWorkspace = uiWorkingArea.getChild(UIDocumentWorkspace.class);
       UIDocumentFormController controller = uiDocumentWorkspace.removeChild(UIDocumentFormController.class);
       AutoVersionService autoVersionService = WCMCoreUtils.getService(AutoVersionService.class);
       if (controller != null) {
         controller.getChild(UIDocumentForm.class).releaseLock();
       }
       uiParent.setRenderedChild(UIJcrExplorerContainer.class);
       event.getRequestContext().getJavascriptManager().
       require("SHARED/multiUpload", "multiUpload").
       addScripts("multiUpload.setLocation('" + 
                  uiJCRExplorer.getWorkspaceName()  + "','" + 
                  uiJCRExplorer.getDriveData().getName()  + "','" +
                  uiTreeExplorer.getLabel()  + "','" +
                  uiJCRExplorer.getCurrentPath() + "','" +
                  org.exoplatform.services.cms.impl.Utils.getPersonalDrivePath(uiJCRExplorer.getDriveData().getHomePath(),
                  ConversationState.getCurrent().getIdentity().getUserId())+ "', '"+
               autoVersionService.isVersionSupport(uiJCRExplorer.getCurrentPath(), uiJCRExplorer.getCurrentWorkspace())+"');");
       uiJCRExplorer.findFirstComponentOfType(UIDocumentInfo.class).getExpandedFolders().clear();
       uiJCRExplorer.updateAjax(event);
     }
   }
 
 }