/*
* Sone - GetLikesAjaxPage.java - Copyright © 2010–2013 David Roden
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package net.pterodactylus.sone.web.ajax;
import static com.fasterxml.jackson.databind.node.JsonNodeFactory.instance;
import static net.pterodactylus.sone.data.Sone.NICE_NAME_COMPARATOR;
import java.util.Set;
import net.pterodactylus.sone.data.Post;
import net.pterodactylus.sone.data.PostReply;
import net.pterodactylus.sone.data.Sone;
import net.pterodactylus.sone.template.SoneAccessor;
import net.pterodactylus.sone.web.WebInterface;
import net.pterodactylus.sone.web.page.FreenetRequest;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.google.common.base.Optional;
import com.google.common.collect.FluentIterable;
/**
* AJAX page that retrieves the number of “likes” a {@link Post} has.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
public class GetLikesAjaxPage extends JsonPage {
/**
* Creates a new “get post likes” AJAX page.
*
* @param webInterface
* The Sone web interface
*/
public GetLikesAjaxPage(WebInterface webInterface) {
super("getLikes.ajax", webInterface);
}
//
// JSONPAGE METHODS
//
/**
* {@inheritDoc}
*/
@Override
protected JsonReturnObject createJsonObject(FreenetRequest request) {
String type = request.getHttpRequest().getParam("type", null);
String id = request.getHttpRequest().getParam(type, null);
if ((id == null) || (id.length() == 0)) {
return createErrorJsonObject("invalid-" + type + "-id");
}
if ("post".equals(type)) {
Optional<Post> post = webInterface.getCore().getPost(id);
if (!post.isPresent()) {
return createErrorJsonObject("invalid-post-id");
}
Set<Sone> sones = webInterface.getCore().getLikes(post.get());
return createSuccessJsonObject().put("likes", sones.size()).put("sones", getSones(sones));
} else if ("reply".equals(type)) {
Optional<PostReply> reply = webInterface.getCore().getPostReply(id);
if (!reply.isPresent()) {
return createErrorJsonObject("invalid-reply-id");
}
Set<Sone> sones = webInterface.getCore().getLikes(reply.get());
return createSuccessJsonObject().put("likes", sones.size()).put("sones", getSones(sones));
}
return createErrorJsonObject("invalid-type");
}
/**
* {@inheritDoc}
*/
@Override
protected boolean needsFormPassword() {
return false;
}
//
// PRIVATE METHODS
//
/**
* Creates a JSON array (containing the IDs and the nice names) from the
* given Sones, after sorting them by name.
*
* @param sones
* The Sones to convert to an array
* @return The Sones, sorted by name
*/
private static JsonNode getSones(Set<Sone> sones) {
ArrayNode soneArray = new ArrayNode(instance);
for (Sone sone : FluentIterable.from(sones).toSortedList(NICE_NAME_COMPARATOR)) {
soneArray.add(new ObjectNode(instance).put("id", sone.getId()).put("name", SoneAccessor.getNiceName(sone)));
}
return soneArray;
}
}