won.bot.framework.component.needproducer.impl.MailFileNeedProducer.java Source code

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Here is the source code for won.bot.framework.component.needproducer.impl.MailFileNeedProducer.java

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/*
 * Copyright 2012  Research Studios Austria Forschungsges.m.b.H.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package won.bot.framework.component.needproducer.impl;

import com.hp.hpl.jena.rdf.model.Model;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.mail.util.MimeMessageParser;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import won.bot.framework.component.needproducer.FileBasedNeedProducer;
import won.protocol.util.NeedModelBuilder;

import javax.mail.internet.MimeMessage;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

/**
 * User: fkleedorfer
 * Date: 17.12.13
 */
public class MailFileNeedProducer implements FileBasedNeedProducer {
    private final Logger logger = LoggerFactory.getLogger(getClass());

    @Override
    public synchronized Model readNeedFromFile(final File file) throws IOException {
        logger.debug("processing as mail file: {} ", file);
        FileInputStream fis = new FileInputStream(file);
        NeedModelBuilder needModelBuilder = new NeedModelBuilder();
        try {
            MimeMessage emailMessage = new MimeMessage(null, fis);
            MimeMessageParser parser = new MimeMessageParser(emailMessage);
            parser.parse();
            needModelBuilder.setTitle(parser.getSubject());
            String content = null;
            if (parser.hasPlainContent()) {
                content = parser.getPlainContent();
            } else if (parser.hasHtmlContent()) {
                Document doc = Jsoup.parse(parser.getHtmlContent());
                content = doc.text();
            }
            if (content != null) {
                needModelBuilder.setDescription(content);
            }
            logger.debug("mail subject          : {}", parser.getSubject());
            logger.debug("mail has plain content: {}", parser.hasPlainContent());
            logger.debug("mail has html content : {}", parser.hasHtmlContent());
            logger.debug("mail has attachments  : {}", parser.hasAttachments());
            logger.debug("mail plain content    : {}", StringUtils.abbreviate(parser.getPlainContent(), 200));
            logger.debug("mail html content     : {}", StringUtils.abbreviate(parser.getHtmlContent(), 200));
            needModelBuilder.setUri("no:uri");
            return needModelBuilder.build();
        } catch (Exception e) {
            logger.debug("could not parse email from file {} ", file, e);
        } finally {
            if (fis != null)
                fis.close();
        }
        return null;
    }

}