/*
 * This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Affero 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 Affero 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/>.
 */

#ifndef __SAVINGSYSTEM_H
#define __SAVINGSYSTEM_H

#include "Common.h"
#include <list>
#include <mutex>

// to evenly distribute saving players to db

class SavingSystemMgr
{
public:
    static void Update(uint32 diff);

    static uint32 GetSavingCurrentValue()                       { return m_savingCurrentValue; } // modified only during single thread
    static uint32 GetSavingMaxValue()                           { return m_savingMaxValueAssigned; } // modified only during single thread
    static void IncreaseSavingCurrentValue(uint32 inc)          { m_savingCurrentValue += inc; } // used and modified only during single thread
    static uint32 IncreaseSavingMaxValue(uint32 inc)            { std::lock_guard<std::mutex> guard(_savingLock); return (m_savingMaxValueAssigned += inc); }
    static void InsertToSavingSkipListIfNeeded(uint32 id)       { if (id > m_savingCurrentValue) { std::lock_guard<std::mutex> guard(_savingLock); m_savingSkipList.push_back(id); } }

protected:
    static uint32 m_savingCurrentValue;
    static uint32 m_savingMaxValueAssigned;
    static uint32 m_savingDiffSum;
    static std::list<uint32> m_savingSkipList;
    static std::mutex _savingLock;
};

#endif