/******************************************************************************
* Copyright © 2013-2016 The Nxt Core Developers. *
* *
* See the AUTHORS.txt, DEVELOPER-AGREEMENT.txt and LICENSE.txt files at *
* the top-level directory of this distribution for the individual copyright *
* holder information and the developer policies on copyright and licensing. *
* *
* Unless otherwise agreed in a custom licensing agreement, no part of the *
* Nxt software, including this file, may be copied, modified, propagated, *
* or distributed except according to the terms contained in the LICENSE.txt *
* file. *
* *
* Removal or modification of this copyright notice is prohibited. *
* *
******************************************************************************/
package nxt.http;
import nxt.Nxt;
import nxt.NxtException;
import nxt.Poll;
import nxt.Vote;
import nxt.VoteWeighting;
import nxt.db.DbIterator;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.JSONStreamAware;
import javax.servlet.http.HttpServletRequest;
public class GetPollVotes extends APIServlet.APIRequestHandler {
static final GetPollVotes instance = new GetPollVotes();
private GetPollVotes() {
super(new APITag[] {APITag.VS}, "poll", "firstIndex", "lastIndex", "includeWeights");
}
@Override
JSONStreamAware processRequest(HttpServletRequest req) throws NxtException {
int firstIndex = ParameterParser.getFirstIndex(req);
int lastIndex = ParameterParser.getLastIndex(req);
boolean includeWeights = "true".equalsIgnoreCase(req.getParameter("includeWeights"));
Poll poll = ParameterParser.getPoll(req);
int countHeight;
JSONData.VoteWeighter weighter = null;
if (includeWeights && (countHeight = Math.min(poll.getFinishHeight(), Nxt.getBlockchain().getHeight()))
>= Nxt.getBlockchainProcessor().getMinRollbackHeight()) {
VoteWeighting voteWeighting = poll.getVoteWeighting();
VoteWeighting.VotingModel votingModel = voteWeighting.getVotingModel();
weighter = voterId -> votingModel.calcWeight(voteWeighting, voterId, countHeight);
}
JSONArray votesJson = new JSONArray();
try (DbIterator<Vote> votes = Vote.getVotes(poll.getId(), firstIndex, lastIndex)) {
for (Vote vote : votes) {
votesJson.add(JSONData.vote(vote, weighter));
}
}
JSONObject response = new JSONObject();
response.put("votes", votesJson);
return response;
}
}