001/*
002 *  Copyright 2014 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.flipbook;
017
018import java.io.InputStream;
019
020import org.apache.commons.codec.digest.DigestUtils;
021
022import org.ametys.cms.data.Binary;
023import org.ametys.cms.repository.Content;
024import org.ametys.core.util.FilenameUtils;
025
026/**
027 * Implementation of a {@link AbstractConvertDocument2ImagesComponent} for a binary metadata
028 */
029public class ConvertMetadata2ImagesComponent extends AbstractConvertDocument2ImagesComponent
030{
031    /** Avalon ROLE. */
032    public static final String ROLE = ConvertMetadata2ImagesComponent.class.getName();
033    
034    /**
035     * Put the file in cache
036     * @param content the content
037     * @param dataPath the path of the data
038     * @param siteName the name of the site
039     * @return The absolute cache path
040     * @throws Exception if an error occurs while caching the file
041     */
042    public String doCache(Content content, String dataPath, String siteName) throws Exception
043    {
044        Binary binary = content.getValue(dataPath);
045
046        String cachePath = _getCacheDirectory(dataPath, binary.getFilename(), content.getName(), siteName);
047        try (InputStream is = binary.getInputStream(); InputStream is2 = binary.getInputStream())
048        {
049            String md5sum = DigestUtils.md5Hex(is);
050            return cache(cachePath, md5sum, is2, content.getName(), content.getId(), binary.getMimeType());
051        }
052    }
053    
054    private String _getCacheDirectory(String metadataPath, String fileName, String contentName, String siteName)
055    {
056        StringBuilder buff = _getContentCacheDirectory(contentName, siteName);
057        buff.append("/metadatas/");
058        buff.append(metadataPath);
059        buff.append("/");
060        buff.append(FilenameUtils.encodeName(fileName));
061        
062        return buff.toString();
063    }
064
065    private StringBuilder _getContentCacheDirectory(String contentName, String siteName)
066    {
067        StringBuilder buff = new StringBuilder();
068        buff.append("/");
069        buff.append(siteName);
070        buff.append("/contents/");
071        buff.append(contentName);
072        return buff;
073    }
074    
075    /**
076     * Remove all cached attribute image for the given content and sitename in the flipbook cache
077     * @param content the content linked to the info to remove
078     * @param siteName the sitename linked to the info to remove
079     */
080    public void doCleanCache(Content content, String siteName)
081    {
082        // target the metadata cache only to avoid removing the attachment cache if its unnecessary
083        cleanCache(_getContentCacheDirectory(content.getName(), siteName).toString() + "/metadatas");
084    }
085}