Package org.olat.group

Source Code of org.olat.group.GroupfoldersWebDAVProvider

/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/

package org.olat.group;

import java.util.ArrayList;
import java.util.List;

import org.olat.admin.quota.QuotaConstants;
import org.olat.collaboration.CollaborationTools;
import org.olat.collaboration.CollaborationToolsFactory;
import org.olat.core.commons.modules.bc.vfs.OlatRootFolderImpl;
import org.olat.core.id.Identity;
import org.olat.core.util.Formatter;
import org.olat.core.util.servlets.WebDAVProvider;
import org.olat.core.util.vfs.MergeSource;
import org.olat.core.util.vfs.NamedContainerImpl;
import org.olat.core.util.vfs.Quota;
import org.olat.core.util.vfs.QuotaManager;
import org.olat.core.util.vfs.VFSContainer;
import org.olat.core.util.vfs.callbacks.FullAccessWithQuotaCallback;
/**
*
* Description:<br>
*/
public class GroupfoldersWebDAVProvider implements WebDAVProvider {

  private static final String MOUNTPOINT = "groupfolders";

  public String getMountPoint() { return MOUNTPOINT; }

  public VFSContainer getContainer(Identity identity) {
    MergeSource cfRoot = new MergeSource(null, null);
    // collect buddy groups
    BusinessGroupManager bgm = BusinessGroupManagerImpl.getInstance();
    QuotaManager qm = QuotaManager.getInstance();
    List<BusinessGroup> groups = bgm.findBusinessGroupsAttendedBy(null, identity, null);
    groups.addAll(bgm.findBusinessGroupsOwnedBy(null, identity, null));

    List<Long> addedGroupKeys = new ArrayList<Long>();
    List<String> addedGroupNames = new ArrayList<String>();
    for (BusinessGroup group : groups) {
      if (addedGroupKeys.contains(group.getKey())) continue; // check for duplicate groups
      CollaborationTools tools = CollaborationToolsFactory.getInstance().getOrCreateCollaborationTools(group);
      if (tools.isToolEnabled(CollaborationTools.TOOL_FOLDER)) {
        String name = group.getName();
        if (addedGroupNames.contains(name)) {
          // attach a serial to the group name to avoid duplicate mount points...
          int serial = 1;
          int serialMax = 100;
          while (addedGroupNames.contains(name + serial) && serial < serialMax) {
            serial++;
          }
          if (serial == serialMax) continue; // continue without adding mount point
          name = name + serial;
        }
       
        // create container and set quota
        OlatRootFolderImpl localImpl = new OlatRootFolderImpl(tools.getFolderRelPath(), cfRoot);
        localImpl.getBasefile().mkdirs(); // lazy initialize dirs
        NamedContainerImpl grpContainer = new NamedContainerImpl(Formatter.makeStringFilesystemSave(name), localImpl);
        Quota q = qm.getCustomQuota(tools.getFolderRelPath());
        if (q == null) {
          Quota defQuota = qm.getDefaultQuota(QuotaConstants.IDENTIFIER_DEFAULT_GROUPS);
          q = QuotaManager.getInstance().createQuota(tools.getFolderRelPath(), defQuota.getQuotaKB(), defQuota.getUlLimitKB());
        }
        FullAccessWithQuotaCallback secCallback = new FullAccessWithQuotaCallback(q);
        grpContainer.setLocalSecurityCallback(secCallback);
       
        // add container
        cfRoot.addContainer(grpContainer);
        addedGroupKeys.add(group.getKey());
        addedGroupNames.add(name);
      }
    }
    return cfRoot;
  }

}
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