de.pksoftware.springstrap.cms.service.CmsService.java Source code

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Here is the source code for de.pksoftware.springstrap.cms.service.CmsService.java

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/*
 * 
 * Springstrap
 *
 * @author Jan Philipp Knller <info@pksoftware.de>
 * 
 * Homepage: http://ui5strap.com/springstrap
 *
 * Copyright (c) 2013-2014 Jan Philipp Knller <info@pksoftware.de>
 * 
 * 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.
 * Released under Apache2 license: http://www.apache.org/licenses/LICENSE-2.0.txt
 * 
 */

package de.pksoftware.springstrap.cms.service;

import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.codec.binary.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import de.pksoftware.springstrap.cms.entity.CmsModel;
import de.pksoftware.springstrap.cms.repository.ICmsModelRepository;
import de.pksoftware.springstrap.fs.service.FileSystemBucket;
import de.pksoftware.springstrap.fs.service.IFileSystemService;
import de.pksoftware.springstrap.fs.service.ItemVisibility;
import de.pksoftware.springstrap.fs.service.SitePath;

@Service
public class CmsService {

    public static final String BUCKET_NAME = "springstrap-cms";

    private static final Logger logger = LoggerFactory.getLogger(CmsService.class);

    protected static FileSystemBucket cmsBucket = new FileSystemBucket(BUCKET_NAME);

    @Autowired
    private ICmsModelRepository cmsModelRepository;

    @Autowired
    private IFileSystemService fileSystemService;

    public void saveModel(CmsModel cmsModel) {
        cmsModelRepository.save(cmsModel);
    }

    public CmsModel loadModel(String path) {
        return cmsModelRepository.findByModelName(path);
    }

    private String getFileExtensionFromMime(String mimeType) {
        String fileExtension = null;

        if (mimeType.equals("image/gif")) {
            fileExtension = "gif";
        } else if (mimeType.equals("image/png")) {
            fileExtension = "png";
        } else if (mimeType.equals("image/jpg") || mimeType.equals("image/jpeg")) {
            fileExtension = "jpg";
        }

        return fileExtension;
    }

    public String convertBase64Images(String modelName, String path, String value) {
        Pattern base64ImagePattern = Pattern.compile(
                "\\<img.+src\\=\\\"data\\:(image\\/[a-z]+)\\;base64\\,([a-zA-Z0-9\\+\\/]+[\\=]*)\\\"[^\\>]*\\>");
        Pattern fileNamePattern = Pattern.compile("data\\-filename\\=\\\"([\\w\\.\\-\\(\\)]+)\\\"");
        Matcher base64ImageMatcher = base64ImagePattern.matcher(value);

        if (base64ImageMatcher.find()) {
            String imgTag = base64ImageMatcher.group(0);

            logger.info("Found img tag: {}", imgTag);

            String mimeType = base64ImageMatcher.group(1);
            String base64Image = base64ImageMatcher.group(2);
            logger.info("Found {} Image: {}", mimeType, base64Image);

            Matcher fileNameMatcher = fileNamePattern.matcher(imgTag);

            String fileName = null;

            if (fileNameMatcher.find()) {
                fileName = fileNameMatcher.group(1);
                logger.info("Filename is: {}", fileName);
            }

            if (null == fileName) {
                String fileExtension = getFileExtensionFromMime(mimeType);
                UUID fileNameUUID = UUID.randomUUID();
                fileName = fileNameUUID.toString() + "." + fileExtension;
            }

            logger.info("File name is: {}", fileName);

            String imagePath = "models/" + modelName + "/" + fileName;
            String finalImagePath = imagePath;

            /*
            boolean fileExists = true;
            int i = 0;
            while(fileExists){
               if(i > 0){
                  logger.info("File already exists: {}", finalImagePath);
                  finalImagePath = "(" + i + ")" + imagePath;
               }
                   
               try {
                  fileExists = fileSystemService.existPublicFile(BUCKET_NAME, finalImagePath);
                  i++;
               } catch (InvalidPathException | InvalidBucketException e) {
                  break;
               }
                   
            }
            */

            byte[] data = Base64.decodeBase64(base64Image);
            try {
                SitePath imageSitePath = new SitePath(finalImagePath);
                fileSystemService.writeFile(ItemVisibility.PUBLIC, cmsBucket, imageSitePath, data, true, true);

                value = base64ImageMatcher.replaceFirst("<img src=\""
                        + fileSystemService.getItemURL(ItemVisibility.PUBLIC, cmsBucket, imageSitePath) + "\" />");
            } catch (Exception ex) {
                logger.error("Could not write file: " + ex.getMessage());
            }

        }

        return value;
    }

}