package fr.mael.jiwigo.service;

import java.io.IOException;
import java.util.List;

import fr.mael.jiwigo.dao.CommentDao;
import fr.mael.jiwigo.om.Comment;
import fr.mael.jiwigo.transverse.exception.ProxyAuthenticationException;
import fr.mael.jiwigo.transverse.session.SessionManager;

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

    /**
     * singleton
     */
    private static CommentService instance;

    private SessionManager sessionManager;

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

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

    /**
     * Lists all comments for an image
     * @param imageId the id of the image
     * @return the list of comments
     * @throws IOException
     * @throws ProxyAuthenticationException
     */
    public List<Comment> list(Integer imageId) throws IOException, ProxyAuthenticationException {
	return CommentDao.getInstance(sessionManager).list(imageId);
    }

    /**
     * Creates a comment for an image
     * @param content the comment
     * @param imageId the id of the image
     * @param auteur the author of the comment
     * @return true if successful
     * @throws IOException
     * @throws ProxyAuthenticationException
     */
    public boolean create(String content, Integer imageId, String auteur) throws IOException,
	    ProxyAuthenticationException {
	Comment comment = new Comment();
	comment.setContent(content);
	comment.setImageId(imageId);
	comment.setAuthor(auteur);
	return CommentDao.getInstance(sessionManager).create(comment);
    }

}