/******************************************************************************
 * Copyright © 2013-2015 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.user;

import nxt.peer.Peer;
import org.json.simple.JSONStreamAware;

import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.net.InetAddress;

import static nxt.user.JSONResponses.LOCAL_USERS_ONLY;

public final class RemoveBlacklistedPeer extends UserServlet.UserRequestHandler {

    static final RemoveBlacklistedPeer instance = new RemoveBlacklistedPeer();

    private RemoveBlacklistedPeer() {}

    @Override
    JSONStreamAware processRequest(HttpServletRequest req, User user) throws IOException {
        if (Users.allowedUserHosts == null && ! InetAddress.getByName(req.getRemoteAddr()).isLoopbackAddress()) {
            return LOCAL_USERS_ONLY;
        } else {
            int index = Integer.parseInt(req.getParameter("peer"));
            Peer peer = Users.getPeer(index);
            if (peer != null && peer.isBlacklisted()) {
                peer.unBlacklist();
            }
        }
        return null;
    }
}
