ImageServer.h

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/*
    ------------------------------------------------------------------------------------
    LICENSE:
    ------------------------------------------------------------------------------------
    This file is part of EVEmu: EVE Online Server Emulator
    Copyright 2006 - 2021 The EVEmu Team
    For the latest information visit https://evemu.dev
    ------------------------------------------------------------------------------------
    This program is free software; you can redistribute it and/or modify it under
    the terms of the GNU Lesser 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License along with
    this program; if not, write to the Free Software Foundation, Inc., 59 Temple
    Place - Suite 330, Boston, MA 02111-1307, USA, or go to
    http://www.gnu.org/copyleft/lesser.txt.
    ------------------------------------------------------------------------------------
    Author:        caytchen
*/

#ifndef __IMAGESERVER__H__INCL__
#define __IMAGESERVER__H__INCL__

#include <memory>

#include "eve-common.h"
#include "utils/Singleton.h"
#include "EVEServerConfig.h"

class ImageServerListener;

class ImageServer : public Singleton<ImageServer>
{
public:
    ImageServer();
    void Run();
    void Stop();

    std::string& url();

    void ReportNewImage(uint32 accountID, std::shared_ptr<std::vector<char> > imageData);
    void ReportNewCharacter(uint32 creatorAccountID, uint32 characterID);

    std::string GetFilePath(std::string& category, uint32 id, uint32 size);
    std::shared_ptr<std::vector<char> > GetImage(std::string& category, uint32 id, uint32 size);

    static const char *const Categories[];
    static const uint32 CategoryCount;

    // used when the ImageServer can't find the image requested
    // this way we don't have to transfer over all the static NPC images
    static const char *const FallbackURL;

private:
    void RunInternal();
    bool ValidateCategory(std::string& category);
    bool ValidateSize(std::string& category, uint32 size);

    std::unordered_map<uint32 /*accountID*/, std::shared_ptr<std::vector<char> > /*imageData*/> _limboImages;
    std::shared_ptr<boost::asio::detail::thread> _ioThread;
    std::shared_ptr<boost::asio::io_context> _io;
    std::shared_ptr<ImageServerListener> _listener;
    std::string _url;
    std::string _basePath;
    boost::asio::detail::mutex _limboLock;

    class Lock
    {
    public:
        Lock(boost::asio::detail::mutex& mutex);
        ~Lock();
    private:
        boost::asio::detail::mutex& _mutex;
    };
};

#define sImageServer \
    ( ImageServer::get() )

#endif // __IMAGESERVER__H__INCL__