001/*
002 *  Copyright 2019 Anyware Services
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 */
016package org.ametys.plugins.odfweb.cart;
017
018import java.io.IOException;
019import java.util.Arrays;
020import java.util.Objects;
021import java.util.Set;
022import java.util.stream.Collectors;
023
024import org.apache.avalon.framework.service.ServiceException;
025import org.apache.avalon.framework.service.ServiceManager;
026import org.apache.cocoon.ProcessingException;
027import org.apache.cocoon.environment.ObjectModelHelper;
028import org.apache.cocoon.environment.Request;
029import org.apache.cocoon.generation.ServiceableGenerator;
030import org.apache.cocoon.serialization.ZipArchiveSerializer;
031import org.apache.cocoon.xml.AttributesImpl;
032import org.apache.cocoon.xml.XMLUtils;
033import org.xml.sax.SAXException;
034
035import org.ametys.cms.repository.Content;
036
037/**
038 * Generate the list of PDF file to include in a zip for downloading cart 
039 */
040public class CartDownloadGenerator extends ServiceableGenerator
041{
042    private ODFCartManager _cartManager;
043
044    @Override
045    public void service(ServiceManager smanager) throws ServiceException
046    {
047        super.service(smanager);
048        _cartManager = (ODFCartManager) smanager.lookup(ODFCartManager.ROLE);
049    }
050    
051    public void generate() throws IOException, SAXException, ProcessingException
052    {
053        Request request = ObjectModelHelper.getRequest(objectModel);
054        String[] itemIds = request.getParameterValues("itemId");
055        String siteName = request.getParameter("siteName");
056        
057        StringBuilder sb = new StringBuilder();
058        sb.append("cocoon:/")
059            .append(siteName)
060            .append("/_content/");
061        
062        String downloadUriPrefix = sb.toString();
063        
064        contentHandler.startDocument();
065        contentHandler.startPrefixMapping("zip", ZipArchiveSerializer.ZIP_NAMESPACE);
066        XMLUtils.startElement(contentHandler, ZipArchiveSerializer.ZIP_NAMESPACE, "archive");
067        
068        Set<Content> contents = Arrays.stream(itemIds)
069            .map(i -> _cartManager.getCartItem(i))
070            .filter(Objects::nonNull)
071            .map(item -> item.getContent())
072            .collect(Collectors.toSet());
073        
074        for (Content content : contents)
075        {
076            String contentName = content.getName();
077            
078            AttributesImpl zipAttrs = new AttributesImpl();
079            zipAttrs.addAttribute("", "name", "name", "CDATA", content.getTitle() + ".pdf");
080            zipAttrs.addAttribute("", "src", "src", "CDATA", downloadUriPrefix + contentName + ".pdf");
081            XMLUtils.startElement(contentHandler, ZipArchiveSerializer.ZIP_NAMESPACE, "entry", zipAttrs);
082            XMLUtils.endElement(contentHandler, ZipArchiveSerializer.ZIP_NAMESPACE, "entry");
083        }
084        
085        XMLUtils.endElement(contentHandler, ZipArchiveSerializer.ZIP_NAMESPACE, "archive");
086        contentHandler.endPrefixMapping("zip");
087        contentHandler.endDocument();
088    }
089}