/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#ifndef QT3DS_WINDOWS_DYNAMIC_LIB_LOADER_H
#define QT3DS_WINDOWS_DYNAMIC_LIB_LOADER_H

#include "foundation/Qt3DSFoundation.h"
#include "foundation/Qt3DSBroadcastingAllocator.h"

#include <QLibrary>

namespace qt3ds {
namespace render {
    using namespace qt3ds;
    // using namespace qt3ds::render;

    class CLoadedDynamicLibrary
    {
        QLibrary* m_DLLHandle;
        CLoadedDynamicLibrary(QLibrary* hdl)
            : m_DLLHandle(hdl)
        {
        }
        CLoadedDynamicLibrary(const CLoadedDynamicLibrary &);
        CLoadedDynamicLibrary &operator=(const CLoadedDynamicLibrary &);

    public:
        ~CLoadedDynamicLibrary()
        {
            if (m_DLLHandle) {
                m_DLLHandle->unload();
                delete m_DLLHandle;
            }
            m_DLLHandle = 0;
        }
        void *FindFunction(const char *name) { return (void*)m_DLLHandle->resolve(name); }
        static CLoadedDynamicLibrary *Create(const char *inFullDllPath, NVFoundationBase &fnd)
        {
            QLibrary* hdl = new QLibrary(inFullDllPath);
            if (!hdl->load()) {
                qCCritical(INVALID_OPERATION, "Failed to load dynamic library %s: %s",
                          inFullDllPath, qPrintable(hdl->errorString()));

                delete hdl;
                return nullptr;
            }
            return QT3DS_NEW(fnd.getAllocator(), CLoadedDynamicLibrary)(hdl);
        }
    };
}
}

#endif