001/*
002 * (C) Copyright 2012-2015 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 CONDITIONS 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 *     ldoguin
018 */
019package org.nuxeo.template.deckjs;
020
021import java.io.File;
022import java.io.IOException;
023import java.io.InputStream;
024import java.io.Serializable;
025import java.nio.file.Files;
026import java.nio.file.StandardCopyOption;
027import java.util.Map;
028
029import org.nuxeo.ecm.core.api.Blob;
030import org.nuxeo.ecm.core.api.Blobs;
031import org.nuxeo.ecm.core.api.CloseableFile;
032import org.nuxeo.ecm.core.api.blobholder.BlobHolder;
033import org.nuxeo.ecm.core.convert.api.ConversionException;
034import org.nuxeo.ecm.core.convert.cache.SimpleCachableBlobHolder;
035import org.nuxeo.ecm.core.convert.extension.Converter;
036import org.nuxeo.ecm.core.convert.extension.ConverterDescriptor;
037import org.nuxeo.ecm.platform.commandline.executor.api.CmdParameters;
038import org.nuxeo.ecm.platform.commandline.executor.api.CommandAvailability;
039import org.nuxeo.ecm.platform.commandline.executor.api.CommandException;
040import org.nuxeo.ecm.platform.commandline.executor.api.CommandLineExecutorService;
041import org.nuxeo.ecm.platform.commandline.executor.api.CommandNotAvailable;
042import org.nuxeo.ecm.platform.commandline.executor.api.ExecResult;
043import org.nuxeo.runtime.api.Framework;
044
045public class DeckJSPDFConverter implements Converter {
046
047    @Override
048    public BlobHolder convert(BlobHolder blobHolder, Map<String, Serializable> parameters) throws ConversionException {
049        CommandLineExecutorService cles = Framework.getService(CommandLineExecutorService.class);
050        CommandAvailability commandAvailability = cles.getCommandAvailability(DeckJSConverterConstants.PHANTOM_JS_COMMAND_NAME);
051        if (!commandAvailability.isAvailable()) {
052            return null;
053        }
054        Blob blob = blobHolder.getBlob();
055        File jsFile = null;
056        try (CloseableFile inputFile = blob.getCloseableFile(".html")) {
057            jsFile = Framework.createTempFile("phantomJsScript", ".js");
058            try (InputStream is = TemplateBundleActivator.getResourceAsStream(DeckJSConverterConstants.DECK_JS2PDF_JS_SCRIPT_PATH)) {
059                Files.copy(is, jsFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
060            }
061            Blob pdfOutput = Blobs.createBlobWithExtension(".pdf");
062            pdfOutput.setMimeType("application/pdf");
063            CmdParameters params = cles.getDefaultCmdParameters();
064            params.addNamedParameter("jsFilePath", jsFile);
065            params.addNamedParameter("inFilePath", inputFile.getFile());
066            params.addNamedParameter("outFilePath", pdfOutput.getFile());
067            ExecResult res = cles.execCommand("phantomjs", params);
068            if (!res.isSuccessful()) {
069                throw res.getError();
070            }
071            return new SimpleCachableBlobHolder(pdfOutput);
072        } catch (CommandNotAvailable | IOException | CommandException e) {
073            throw new ConversionException("PDF conversion failed", e);
074        } finally {
075            org.apache.commons.io.FileUtils.deleteQuietly(jsFile);
076        }
077    }
078
079    @Override
080    public void init(ConverterDescriptor descriptor) {
081    }
082
083}