package org.argeo.cms.ui.internal;
   
   import static javax.jcr.nodetype.NodeType.NT_FILE;
   
   import java.io.IOException;
   import java.io.InputStream;
   
   import javax.jcr.Node;
   import javax.jcr.Property;
  import javax.jcr.RepositoryException;
  import javax.jcr.nodetype.NodeType;
  
  import org.apache.commons.io.FilenameUtils;
  import org.argeo.cms.CmsException;
  import org.argeo.cms.ui.CmsImageManager;
  import org.argeo.jcr.JcrUtils;
  import org.eclipse.rap.fileupload.FileDetails;
  import org.eclipse.rap.fileupload.FileUploadReceiver;
  
  public class JcrFileUploadReceiver extends FileUploadReceiver {
  	private final Node parentNode;
  	private final String nodeName;
  	private final CmsImageManager imageManager;
  
  	/** If nodeName is null, use the uploaded file name */
  	public JcrFileUploadReceiver(Node parentNode, String nodeName, CmsImageManager imageManager) {
  		super();
  		this.parentNode = parentNode;
  		this.nodeName = nodeName;
  		this.imageManager = imageManager;
  	}
  
  	@Override
  	public void receive(InputStream stream, FileDetails details) throws IOException {
  		try {
  			String fileName = nodeName != null ? nodeName : details.getFileName();
  			String contentType = details.getContentType();
  			if (isImage(details.getFileName(), contentType)) {
  				imageManager.uploadImage(parentNode, fileName, stream);
  				return;
  				// InputStream inputStream = new ByteArrayInputStream(arr);
  				// ImageData id = new ImageData(inputStream);
  				// fileNode.addMixin(CmsTypes.CMS_IMAGE);
  				// fileNode.setProperty(CMS_IMAGE_WIDTH, id.width);
  				// fileNode.setProperty(CMS_IMAGE_HEIGHT, id.height);
  			}
  
  			Node fileNode;
  			if (parentNode.hasNode(fileName)) {
  				fileNode = parentNode.getNode(fileName);
  				if (!fileNode.isNodeType(NT_FILE))
  					fileNode.remove();
  			}
  			fileNode = JcrUtils.copyStreamAsFile(parentNode, fileName, stream);
  
  			if (contentType != null) {
  				fileNode.addMixin(NodeType.MIX_MIMETYPE);
  				fileNode.setProperty(Property.JCR_MIMETYPE, contentType);
  			}
  			processNewFile(fileNode);
  			fileNode.getSession().save();
  		} catch (RepositoryException e) {
  			throw new CmsException("cannot receive " + details, e);
  		}
  	}
  
  	protected Boolean isImage(String fileName, String contentType) {
  		String ext = FilenameUtils.getExtension(fileName);
  		return ext != null && (ext.equals("png") || ext.equalsIgnoreCase("jpg"));
  	}
  
  	protected void processNewFile(Node node) {
  
  	}
  
  }