PraisePhotoFormHandler.java

/*
 * Copyright (c) 2006-2009 by Dirk Riehle, http://dirkriehle.com
 *
 * This file is part of the Wahlzeit photo rating application.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 */

package org.wahlzeit.handlers;

import org.wahlzeit.model.AccessRights;
import org.wahlzeit.model.Client;
import org.wahlzeit.model.Photo;
import org.wahlzeit.model.PhotoId;
import org.wahlzeit.model.PhotoManager;
import org.wahlzeit.model.UserSession;
import org.wahlzeit.services.LogBuilder;
import org.wahlzeit.utils.StringUtil;
import org.wahlzeit.webparts.WebPart;

import java.util.Map;
import java.util.logging.Logger;


/**
 * A handler class for a specific web form.
 */
public class PraisePhotoFormHandler extends AbstractWebFormHandler {

	private static final Logger log = Logger.getLogger(PraisePhotoFormHandler.class.getName());


	/**
	 *
	 */
	public PraisePhotoFormHandler() {
		initialize(PartUtil.PRAISE_PHOTO_FORM_FILE, AccessRights.GUEST);
	}

	/**
	 *
	 */
	protected void doMakeWebPart(UserSession us, WebPart part) {
		PhotoId photoId = us.getPhotoId();
		if (photoId != null) {
			part.addString(Photo.ID, photoId.asString());
		}
	}

	/**
	 *
	 */
	protected boolean isWellFormedPost(UserSession us, Map args) {
		String photoId = us.getAsString(args, Photo.ID);
		Photo photo = PhotoManager.getInstance().getPhoto(photoId);
		return photo != null;
	}

	/**
	 *
	 */
	protected String doHandlePost(UserSession us, Map args) {
		String photoId = us.getAsString(args, Photo.ID);
		Photo photo = PhotoManager.getInstance().getPhoto(photoId);
		String praise = us.getAsString(args, Photo.PRAISE);
		Client client = us.getClient();

		boolean wasPraised = false;
		if (!StringUtil.isNullOrEmptyString(praise)) {
			if (!us.hasPraisedPhoto(photo)) {
				int value = Integer.parseInt(praise);
				photo.addToPraise(value);
				client.addPraisedPhotoId(photo.getId());
				us.addProcessedPhoto(photo);
				wasPraised = true;
			}
		}

		log.info(LogBuilder.createUserMessage().addAction(wasPraised ? "PraisePhoto" : "SkipPhoto").toString());

		return PartUtil.SHOW_PHOTO_PAGE_NAME;
	}

}