/**
* BigBlueButton open source conferencing system - http://www.bigbluebutton.org/
*
* Copyright (c) 2012 BigBlueButton Inc. and by respective authors (see below).
*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation; either version 3.0 of the License, or (at your option) any later
* version.
*
* BigBlueButton 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
*
*/
package org.bigbluebutton.presentation;
import java.io.File;
import org.bigbluebutton.api.messaging.MessagingConstants;
import org.bigbluebutton.api.messaging.MessagingService;
import org.bigbluebutton.presentation.ConversionUpdateMessage.MessageBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.gson.Gson;
public class SupportedDocumentFilter {
private static Logger log = LoggerFactory.getLogger(SupportedDocumentFilter.class);
private final MessagingService messagingService;
public SupportedDocumentFilter(MessagingService m) {
messagingService = m;
}
public boolean isSupported(UploadedPresentation pres) {
File presentationFile = pres.getUploadedFile();
/* Get file extension - Perhaps try to rely on a more accurate method than an extension type ? */
int fileExtIndex = presentationFile.getName().lastIndexOf('.') + 1;
String ext = presentationFile.getName().toLowerCase().substring(fileExtIndex);
boolean supported = SupportedFileTypes.isFileSupported(ext);
notifyProgressListener(supported, pres);
if (supported) {
log.info("Received supported file " + pres.getUploadedFile().getAbsolutePath());
pres.setFileType(ext);
}
return supported;
}
private void notifyProgressListener(boolean supported, UploadedPresentation pres) {
MessageBuilder builder = new ConversionUpdateMessage.MessageBuilder(pres);
if (supported) {
builder.messageKey(ConversionMessageConstants.SUPPORTED_DOCUMENT_KEY);
} else {
builder.messageKey(ConversionMessageConstants.UNSUPPORTED_DOCUMENT_KEY);
}
if(messagingService !=null){
Gson gson= new Gson();
String updateMsg=gson.toJson(builder.build().getMessage());
log.debug("sending: "+updateMsg);
messagingService.send(MessagingConstants.PRESENTATION_CHANNEL, updateMsg);
} else {
log.warn("MessagingService has not been set!");
}
}
}