source: extensions/jiwigo-ws-api/src/main/java/fr/mael/jiwigo/service/ImageService.java @ 9893

package fr.mael.jiwigo.service;

import java.io.File;
import java.io.IOException;
import java.security.NoSuchAlgorithmException;
import java.util.List;

import fr.mael.jiwigo.dao.ImageDao;
import fr.mael.jiwigo.om.Image;
import fr.mael.jiwigo.transverse.exception.FileAlreadyExistsException;
import fr.mael.jiwigo.transverse.exception.ProxyAuthenticationException;
import fr.mael.jiwigo.transverse.exception.WrongChunkSizeException;
import fr.mael.jiwigo.transverse.session.SessionManager;
import fr.mael.jiwigo.transverse.util.ImagesUtil;
import fr.mael.jiwigo.transverse.util.Tools;

/*
 *  jiwigo-ws-api Piwigo webservice access Api
 *  Copyright (c) 2010-2011 Mael mael@le-guevel.com
 *                All Rights Reserved
 *
 *  This library is free software. It comes without any warranty, to
 *  the extent permitted by applicable law. You can redistribute it
 *  and/or modify it under the terms of the Do What The Fuck You Want
 *  To Public License, Version 2, as published by Sam Hocevar. See
 *  http://sam.zoy.org/wtfpl/COPYING for more details.
 */
/**
 *

 * @author mael
 *
 */
public class ImageService {

    /**
     * Logger
     */
    public static final org.apache.commons.logging.Log LOG = org.apache.commons.logging.LogFactory
            .getLog(ImageService.class);

    /**
     * Singleton
     */
    private static ImageService instance;

    private SessionManager sessionManager;

    /**
     * @return the singleton
     */
    public static ImageService getInstance(SessionManager sessionManager) {
        if (instance == null) {
            instance = new ImageService(sessionManager);
        }
        return instance;
    }

    /**
     * private constructor to use a singleton
     */
    private ImageService(SessionManager sessionManager) {
        this.sessionManager = sessionManager;
    }

    /**
     * Lists all images for a category
     * @param categoryId the id of the category
     * @return the list of images
     * @throws IOException
     * @throws ProxyAuthenticationException
     */
    public List<Image> listByCategory(Integer categoryId, boolean rafraichir) throws IOException,
            ProxyAuthenticationException {
        return ImageDao.getInstance(sessionManager).listByCategory(categoryId, rafraichir);
    }

    /**
     * Method called to send an image to the server.
     * @param filePath
     * @param idCategory
     * @param originalWidth width for the original image
     * @param originalHeight height for the original image
     * @return true if the image is created
     * @throws IOException
     * @throws WrongChunkSizeException
     * @throws ProxyAuthenticationException
     * @throws FileAlreadyExistsException
     * @throws NoSuchAlgorithmException
     * @throws Exception
     */
    public boolean create(String filePath, Integer idCategory, Integer originalWidth, Integer originalHeight,
            Double chunckSize, Integer privacyLevel) throws IOException, NoSuchAlgorithmException,
            FileAlreadyExistsException, ProxyAuthenticationException, WrongChunkSizeException {
        File originalFile = new File(filePath);
        //get the byte array of the original file, to keep metadata
        byte[] bytesFichierOriginal = Tools.getBytesFromFile(originalFile);

        //resize the picture (or not)
        boolean originaleRedimensionnee = ImagesUtil.scale(filePath, "originale.jpg", originalWidth, originalHeight);
        //create the thumbnail
        ImagesUtil.scale(filePath, "thumb.jpg", 120, 90);
        //get the thumbnail
        File thumbnail = new File(System.getProperty("java.io.tmpdir") + "/thumb.jpg");
        File originale = null;
        if (originaleRedimensionnee) {
            originale = new File(System.getProperty("java.io.tmpdir") + "/originale.jpg");
            //if the original file has been resized, we put the metadata in the resized file
            //I use here a try catch because if the original file isn't a jpeg
            //the methode Outil.enrich will fail, but the procedure has to continue
            try {
                byte[] fichierEnrichi = Tools.enrich(bytesFichierOriginal, Tools.getBytesFromFile(new File(System
                        .getProperty("java.io.tmpdir")
                        + "/originale.jpg")));
                Tools.byteToFile(System.getProperty("java.io.tmpdir") + "/originale.jpg", fichierEnrichi);
            } catch (Exception e) {
            }
        } else {
            originale = originalFile;

        }
        Image image = new Image();
        image.setName(getImageName(filePath));
        image.setThumbnail(thumbnail);
        image.setOriginale(originale);
        image.setIdCategory(idCategory);
        image.setPrivacyLevel(String.valueOf(privacyLevel));
        //now we call the dao to send the image to the webservice
        return ImageDao.getInstance(sessionManager).create(image, chunckSize * 1000000);
    }

    /**
     * Add tags to an existing image
     * @param image the image
     * @param tagId the ids of the tags
     * @return true if successful
     * @throws IOException
     * @throws ProxyAuthenticationException
     */
    public boolean addTags(Image image, String tagId) throws IOException, ProxyAuthenticationException {
        return ImageDao.getInstance(sessionManager).addTags(image.getIdentifier(), tagId);
    }

    /**
     * Search images from a string
     * @param queryString the string
     * @return images matching the string
     * @throws IOException
     * @throws ProxyAuthenticationException
     */
    public List<Image> search(String queryString) throws IOException, ProxyAuthenticationException {
        return ImageDao.getInstance(sessionManager).search(queryString);
    }

    /**
     * Deletes the file extension
     * @param path
     * @return
     */
    private String getImageName(String path) {
        File fichier = new File(path);
        StringBuffer name = new StringBuffer(fichier.getName());
        return (name.delete(name.lastIndexOf("."), name.length())).toString();

    }

}