/***************************************************************************
 *   Copyright (C) 2005 by Joris Guisson                                   *
 *   joris.guisson@gmail.com                                               *
 *                                                                         *
 *   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 2 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.             *
 ***************************************************************************/
#ifndef DHTANNOUNCETASK_H
#define DHTANNOUNCETASK_H


#include "kbucket.h"
#include "task.h"

namespace dht
{
class Database;

class KBucketEntryAndToken : public KBucketEntry
{
    QByteArray token;
public:
    KBucketEntryAndToken() {}
    KBucketEntryAndToken(const KBucketEntry & e, const QByteArray & token)
        : KBucketEntry(e), token(token) {}
    ~KBucketEntryAndToken() override {}

    const QByteArray & getToken() const
    {
        return token;
    }
};

/**
    @author Joris Guisson <joris.guisson@gmail.com>
*/
class AnnounceTask : public Task
{
public:
    AnnounceTask(Database* db,
                 RPCServer* rpc,
                 Node* node,
                 const dht::Key & info_hash,
                 bt::Uint16 port,
                 QObject* parent);
    ~AnnounceTask() override;

    void callFinished(RPCCall* c, RPCMsg::Ptr rsp) override;
    void callTimeout(RPCCall* c) override;
    void update() override;

    /**
     * Take one item from the returned values.
     * Returns false if there is no item to take.
     * @param item The item
     * @return false if no item to take, true else
     */
    bool takeItem(DBItem & item);

private:
    void handleNodes(const QByteArray & nodes, int ip_version);

private:
    dht::Key info_hash;
    bt::Uint16 port;
    std::set<KBucketEntryAndToken> answered; // nodes which have answered with values
    KBucketEntrySet answered_visited; // nodes which have answered with values which have been visited
    Database* db;
    DBItemList returned_items;
};

}

#endif
