Client.h

/*
 * MIT License
 *
 * Copyright (c) 2025 Adriano dos Santos Fernandes
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
 
#ifndef FBCPP_CLIENT_H
#define FBCPP_CLIENT_H
 
#include "config.h"
#include "fb-api.h"
#include "SmartPtrs.h"
#include <cassert>
#include <concepts>
#include <memory>
#include <string>
#include <type_traits>
 
#if FB_CPP_USE_BOOST_DLL != 0
#include <boost/dll.hpp>
#endif
 
 
namespace fbcpp
{
    class Client final
    {
    public:
        explicit Client(fb::IMaster* master)
            : master{master}
        {
            assert(master);
        }
 
#if FB_CPP_USE_BOOST_DLL != 0
        explicit Client(const boost::dll::fs::path& fbclientLibPath,
            boost::dll::load_mode::type loadMode = boost::dll::load_mode::append_decorations |
                boost::dll::load_mode::search_system_folders)
            : Client{boost::dll::shared_library{fbclientLibPath, loadMode}}
        {
        }
 
        explicit Client(boost::dll::shared_library fbclientLib)
            : fbclientLib(fbclientLib)
        {
            const auto fbGetMasterInterface =
                fbclientLib.get<decltype(fb::fb_get_master_interface)>("fb_get_master_interface");
            master = fbGetMasterInterface();
            assert(master);
        }
#endif
 
        Client(Client&& o) noexcept
            : master{o.master},
              util{o.util},
              int128Util{o.int128Util},
              decFloat16Util{o.decFloat16Util},
              decFloat34Util{o.decFloat34Util}
#if FB_CPP_USE_BOOST_DLL != 0
              ,
              fbclientLib{std::move(o.fbclientLib)}
#endif
        {
            o.master = nullptr;
            o.util = nullptr;
            o.int128Util = nullptr;
            o.decFloat16Util = nullptr;
            o.decFloat34Util = nullptr;
        }
 
        ~Client() noexcept = default;
 
        Client& operator=(Client&&) = delete;
 
        Client& operator=(const Client& o) = delete;
        Client(const Client&) = delete;
 
    public:
        bool isValid() noexcept
        {
            return master != nullptr;
        }
 
        fb::IMaster* getMaster() noexcept
        {
            return master;
        }
 
        fb::IUtil* getUtil()
        {
            assert(master);
 
            if (!util)
                util = master->getUtilInterface();
 
            return util;
        }
 
        template <std::derived_from<fb::IStatus> StatusType>
        fb::IInt128* getInt128Util(StatusType* status)
        {
            assert(status);
 
            if (!int128Util)
                int128Util = getUtil()->getInt128(status);
 
            return int128Util;
        }
 
        template <std::derived_from<fb::IStatus> StatusType>
        fb::IDecFloat16* getDecFloat16Util(StatusType* status)
        {
            assert(status);
 
            if (!decFloat16Util)
                decFloat16Util = getUtil()->getDecFloat16(status);
 
            return decFloat16Util;
        }
 
        template <std::derived_from<fb::IStatus> StatusType>
        fb::IDecFloat34* getDecFloat34Util(StatusType* status)
        {
            assert(status);
 
            if (!decFloat34Util)
                decFloat34Util = getUtil()->getDecFloat34(status);
 
            return decFloat34Util;
        }
 
        FbUniquePtr<fb::IStatus> newStatus()
        {
            assert(master);
            return fbUnique(master->getStatus());
        }
 
        void shutdown();
 
    private:
        fb::IMaster* master;
        fb::IUtil* util = nullptr;
        fb::IInt128* int128Util = nullptr;
        fb::IDecFloat16* decFloat16Util = nullptr;
        fb::IDecFloat34* decFloat34Util = nullptr;
#if FB_CPP_USE_BOOST_DLL != 0
        boost::dll::shared_library fbclientLib;
#endif
    };
}  // namespace fbcpp
 
 
#endif  // FBCPP_CLIENT_H