001/*
002 * (C) Copyright 2016 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDIT}9IONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Andre Justo
018 */
019package org.nuxeo.ecm.platform.video;
020
021import java.util.Collection;
022import java.util.List;
023import java.util.stream.Collectors;
024
025import org.nuxeo.ecm.core.api.Blob;
026import org.nuxeo.ecm.core.api.DocumentModel;
027import org.nuxeo.ecm.core.api.blobholder.BlobHolder;
028import org.nuxeo.ecm.platform.preview.adapter.VideoPreviewer;
029import org.nuxeo.ecm.platform.preview.api.PreviewException;
030
031/**
032 * @since 8.2
033 */
034public class VideoDocumentPreviewer extends VideoPreviewer {
035
036    @Override
037    public List<Blob> getPreview(Blob blob, DocumentModel dm) throws PreviewException {
038        boolean isBlobHolder = dm.getAdapter(BlobHolder.class).getBlob().equals(blob);
039        if (isBlobHolder && dm.getType().equals(VideoConstants.VIDEO_TYPE)) {
040            VideoDocument videoDocument = dm.getAdapter(VideoDocument.class);
041            Collection<TranscodedVideo> transcodedVideos = videoDocument.getTranscodedVideos();
042            if (!transcodedVideos.isEmpty()) {
043                List<Blob> blobs = transcodedVideos.stream().map(TranscodedVideo::getBlob).collect(Collectors.toList());
044                return buildPreview(blobs, dm);
045            }
046        }
047        return super.getPreview(blob, dm);
048    }
049}