/****************************************************************************
**
** https://www.qxorm.com/
** Copyright (C) 2013 XDL Team (ic-east.com)
**
** This file is part of the QxOrm library
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any
** damages arising from the use of this software
**
** Commercial Usage
** Licensees holding valid commercial QxOrm 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 XDL Team
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file 'license.gpl3.txt' included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met : http://www.gnu.org/copyleft/gpl.html
**
** If you are unsure which license is appropriate for your use, or
** if you have questions regarding the use of this file, please contact :
** ic-east.com
**
****************************************************************************/

#ifndef _QX_FACTORY_H_
#define _QX_FACTORY_H_

#ifdef _MSC_VER
#pragma once
#endif

/*!
 * \file QxFactory.h
 * \author XDL Team
 * \ingroup QxFactory
 * \brief Concrete factory class to create object dynamically using the class name
 */

#include <QtCore/qobject.h>

#include <QxFactory/IxFactory.h>

#include <QxTraits/get_base_class.h>
#include <QxTraits/get_class_name.h>
#include <QxTraits/get_primary_key.h>

#define QX_STR_CANNOT_INSTANTIATE_ABSTRACT_CLASS "[QxOrm] qx::QxFactory<T> ---> cannot instantiate abstract class '%s'"

#if _QX_AUTO_REGISTER_REPOSITORY
#define QX_AUTO_REGISTER_REPOSITORY(className, sKey) qx::register_repository<className>(sKey);
#else                                                // _QX_AUTO_REGISTER_REPOSITORY
#define QX_AUTO_REGISTER_REPOSITORY(className, sKey) /* Nothing */
#endif                                               // _QX_AUTO_REGISTER_REPOSITORY

namespace qx
{

   class IxPersistable;
   template <class T>
   class QxClass;

#ifdef _QX_ENABLE_QT_NETWORK
   namespace service
   {
      class IxService;
      class IxParameter;
   } // namespace service
#endif // _QX_ENABLE_QT_NETWORK

#if _QX_AUTO_REGISTER_REPOSITORY
   template <class T>
   inline void register_repository(const QString &sKey);
#endif // _QX_AUTO_REGISTER_REPOSITORY

   /*!
    * \ingroup QxFactory
    * \brief qx::QxFactory<T> : concrete factory class to create object of type T dynamically using the class name
    */
   template <class T>
   class QxFactory : public IxFactory
   {

   public:
      QxFactory(const QString &sKey) : IxFactory(sKey) { QX_AUTO_REGISTER_REPOSITORY(T, sKey); }
      virtual ~QxFactory() { ; }

#ifdef _QX_ENABLE_QT_NETWORK
      virtual qx::any createObject(bool bRawPointer = false) const
      {
         QxClass<T>::getSingleton();
         return qxCreateInstance<std::is_abstract<T>::value, std::is_base_of<qx::IxPersistable, T>::value, std::is_base_of<qx::service::IxService, T>::value, std::is_base_of<qx::service::IxParameter, T>::value, std::is_base_of<QObject, T>::value, 0>::create(bRawPointer);
      }

      virtual void *createObjectNudePtr() const
      {
         QxClass<T>::getSingleton();
         return qxCreateInstance<std::is_abstract<T>::value, std::is_base_of<qx::IxPersistable, T>::value, std::is_base_of<qx::service::IxService, T>::value, std::is_base_of<qx::service::IxParameter, T>::value, std::is_base_of<QObject, T>::value, 0>::createNudePtr();
      }
#else  // _QX_ENABLE_QT_NETWORK
      virtual qx::any createObject(bool bRawPointer = false) const
      {
         QxClass<T>::getSingleton();
         return qxCreateInstance<std::is_abstract<T>::value, std::is_base_of<qx::IxPersistable, T>::value, false, false, std::is_base_of<QObject, T>::value, 0>::create(bRawPointer);
      }

      virtual void *createObjectNudePtr() const
      {
         QxClass<T>::getSingleton();
         return qxCreateInstance<std::is_abstract<T>::value, std::is_base_of<qx::IxPersistable, T>::value, false, false, std::is_base_of<QObject, T>::value, 0>::createNudePtr();
      }
#endif // _QX_ENABLE_QT_NETWORK

#ifndef _QX_NO_RTTI
      virtual const std::type_info &typeInfo() const
      {
         return typeid(T);
      }
#endif // _QX_NO_RTTI

   private:
      template <bool bIsAbstract /* = false */, bool bIsIxPersistable /* = false */, bool bIsIxService /* = false */, bool bIsIxParameter /* = false */, bool bIsQObject /* = false */, int dummy>
      struct qxCreateInstance
      {
         static inline qx::any create(bool bRawPointer)
         {
            if (bRawPointer)
            {
               T *p = new T();
               return qx::any(p);
            };
            std::shared_ptr<T> ptr = std::make_shared<T>();
            return qx::any(ptr);
         }
         static inline void *createNudePtr() { return static_cast<void *>(new T()); }
      };

      template <bool bIsIxPersistable, bool bIsIxService, bool bIsIxParameter, bool bIsQObject, int dummy>
      struct qxCreateInstance<true, bIsIxPersistable, bIsIxService, bIsIxParameter, bIsQObject, dummy>
      {
         static inline qx::any create(bool bRawPointer)
         {
            Q_UNUSED(bRawPointer);
            qDebug(QX_STR_CANNOT_INSTANTIATE_ABSTRACT_CLASS, qx::trait::get_class_name<T>::get());
            return qx::any();
         }
         static inline void *createNudePtr()
         {
            qDebug(QX_STR_CANNOT_INSTANTIATE_ABSTRACT_CLASS, qx::trait::get_class_name<T>::get());
            return NULL;
         }
      };

      template <bool bIsQObject, int dummy>
      struct qxCreateInstance<false, true, false, false, bIsQObject, dummy>
      {
         static inline qx::any create(bool bRawPointer)
         {
            if (bRawPointer)
            {
               T *p = new T();
               return qx::any(p);
            };
            std::shared_ptr<T> ptr = std::make_shared<T>();
            return qx::any(ptr);
         }
         static inline void *createNudePtr() { return static_cast<qx::IxPersistable *>(new T()); }
      };

#ifdef _QX_ENABLE_QT_NETWORK
      template <bool bIsQObject, int dummy>
      struct qxCreateInstance<false, false, true, false, bIsQObject, dummy>
      {
         static inline qx::any create(bool bRawPointer)
         {
            if (bRawPointer)
            {
               T *p = new T();
               return qx::any(p);
            };
            std::shared_ptr<T> ptr = std::make_shared<T>();
            return qx::any(ptr);
         }
         static inline void *createNudePtr() { return static_cast<qx::service::IxService *>(new T()); }
      };

      template <bool bIsQObject, int dummy>
      struct qxCreateInstance<false, false, false, true, bIsQObject, dummy>
      {
         static inline qx::any create(bool bRawPointer)
         {
            if (bRawPointer)
            {
               T *p = new T();
               return qx::any(p);
            };
            std::shared_ptr<T> ptr = std::make_shared<T>();
            return qx::any(ptr);
         }
         static inline void *createNudePtr() { return static_cast<qx::service::IxParameter *>(new T()); }
      };
#endif // _QX_ENABLE_QT_NETWORK

      template <int dummy>
      struct qxCreateInstance<false, false, false, false, true, dummy>
      {
         static inline qx::any create(bool bRawPointer)
         {
            if (bRawPointer)
            {
               T *p = new T();
               return qx::any(p);
            };
            std::shared_ptr<T> ptr = std::make_shared<T>();
            return qx::any(ptr);
         }
         static inline void *createNudePtr() { return static_cast<QObject *>(new T()); }
      };
   };

} // namespace qx

#include "../../inl/QxFactory/QxFactory.inl"

#endif // _QX_FACTORY_H_
