Package org.structr.websocket.command

Source Code of org.structr.websocket.command.AppendFileCommand

/**
* Copyright (C) 2010-2014 Morgner UG (haftungsbeschränkt)
*
* This file is part of Structr <http://structr.org>.
*
* Structr 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.
*
* Structr 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 Affero General Public License
* along with Structr.  If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.websocket.command;

import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.structr.common.error.FrameworkException;
import org.structr.web.entity.AbstractFile;

import org.structr.core.entity.AbstractNode;
import org.structr.web.entity.Folder;
import org.structr.web.entity.relation.FileChildren;
import org.structr.web.entity.relation.Folders;
import org.structr.websocket.StructrWebSocket;
import org.structr.websocket.message.MessageBuilder;
import org.structr.websocket.message.WebSocketMessage;

/**
*
* @author Axel Morgner
*/
public class AppendFileCommand extends AbstractCommand {
   
  private static final Logger logger     = Logger.getLogger(AppendFileCommand.class.getName());

  static {

    StructrWebSocket.addCommand(AppendFileCommand.class);
  }

  @Override
  public void processMessage(WebSocketMessage webSocketData) {

    String id                    = webSocketData.getId();
    Map<String, Object> nodeData = webSocketData.getNodeData();
    String parentId              = (String) nodeData.get("parentId");

    // check node to append
    if (id == null) {

      getWebSocket().send(MessageBuilder.status().code(422).message("Cannot append node, no id is given").build(), true);

      return;

    }

    // check for parent ID
    if (parentId == null) {

      getWebSocket().send(MessageBuilder.status().code(422).message("Cannot add node without parentId").build(), true);

      return;

    }

    // check if parent node with given ID exists
    AbstractNode parentNode = getNode(parentId);

    if (parentNode == null) {

      getWebSocket().send(MessageBuilder.status().code(404).message("Parent node not found").build(), true);

      return;

    }

    if (parentNode instanceof Folder) {

      Folder folder = (Folder) parentNode;
     
      AbstractFile file = (AbstractFile) getNode(id);

      if (file != null) {
       
        try {
          // Remove from existing parent
          Folder currentParent = (Folder)file.treeGetParent();
          if (currentParent != null) {
           
            currentParent.treeRemoveChild(file);
           
          }
         
          folder.treeAppendChild(file);
         
        } catch (FrameworkException ex) {
          logger.log(Level.SEVERE, null, ex);
          getWebSocket().send(MessageBuilder.status().code(422).message("Cannot append file").build(), true);
        }
      }
     

    } else {

      // send exception
      getWebSocket().send(MessageBuilder.status().code(422).message("Parent node is not instance of Folder").build(), true);
    }

  }

  @Override
  public String getCommand() {

    return "APPEND_FILE";

  }

}
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