/*
* Sone - GetPostFeedCommand.java - Copyright © 2011–2013 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.fcp;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import net.pterodactylus.sone.core.Core;
import net.pterodactylus.sone.data.Post;
import net.pterodactylus.sone.data.Sone;
import net.pterodactylus.sone.freenet.fcp.FcpException;
import com.google.common.base.Optional;
import com.google.common.collect.Collections2;
import freenet.support.SimpleFieldSet;
import freenet.support.api.Bucket;
/**
* Implementation of an FCP interface for other clients or plugins to
* communicate with Sone.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
public class GetPostFeedCommand extends AbstractSoneCommand {
/**
* Creates a new “GetPostFeed” command.
*
* @param core
* The core
*/
public GetPostFeedCommand(Core core) {
super(core);
}
/**
* {@inheritDoc}
*/
@Override
public Response execute(SimpleFieldSet parameters, Bucket data, AccessType accessType) throws FcpException {
Sone sone = getSone(parameters, "Sone", true);
int startPost = getInt(parameters, "StartPost", 0);
int maxPosts = getInt(parameters, "MaxPosts", -1);
Collection<Post> allPosts = new HashSet<Post>();
allPosts.addAll(sone.getPosts());
for (String friendSoneId : sone.getFriends()) {
Optional<Sone> friendSone = getCore().getSone(friendSoneId);
if (!friendSone.isPresent()) {
continue;
}
allPosts.addAll(friendSone.get().getPosts());
}
allPosts.addAll(getCore().getDirectedPosts(sone.getId()));
allPosts = Collections2.filter(allPosts, Post.FUTURE_POSTS_FILTER);
List<Post> sortedPosts = new ArrayList<Post>(allPosts);
Collections.sort(sortedPosts, Post.TIME_COMPARATOR);
if (sortedPosts.size() < startPost) {
return new Response("PostFeed", encodePosts(Collections.<Post> emptyList(), "Posts.", false));
}
return new Response("PostFeed", encodePosts(sortedPosts.subList(startPost, (maxPosts == -1) ? sortedPosts.size() : Math.min(startPost + maxPosts, sortedPosts.size())), "Posts.", true));
}
}