/****************************************************************************
**
** https://www.qxorm.com/
** Copyright (C) 2013 Lionel Marty (contact@qxorm.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 Lionel Marty
**
** 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 :
** contact@qxorm.com
**
****************************************************************************/

#ifndef _QX_MODEL_SERVICE_H_
#define _QX_MODEL_SERVICE_H_

#ifdef _MSC_VER
#pragma once
#endif

/*!
 * \file QxModelService.h
 * \author Lionel Marty
 * \ingroup QxModelView
 * \brief qx::QxModelService<T, S> provides an easy way to connect your model to the QxService module (all queries are executed over network using client/server communication)
 */

#include <QxModelView/QxModel.h>

namespace qx {

/*!
 * \ingroup QxModelView
 * \brief qx::QxModelService<T, S> : provides an easy way to connect your model to the QxService module (all queries are executed over network using client/server communication)
 *
 * T template parameter is a persistent class registered into QxOrm context
 * S template parameter is a service class generated by QxEntityEditor (or your own service class providing all methods)
 */
template <class T, class S, class B = qx::IxModel>
class QxModelService : public qx::QxModel<T, B>
{

public:

   typedef typename qx::QxModel<T, B>::type_ptr type_ptr;
   typedef typename qx::QxModel<T, B>::type_primary_key type_primary_key;
   typedef typename qx::QxModel<T, B>::type_collection type_collection;
   typedef std::shared_ptr<type_collection> type_collection_ptr;
   typedef B type_base_class;

public:

   QxModelService(QObject * parent = 0) : qx::QxModel<T, B>(parent) { ; }
   QxModelService(qx::IxModel * other, QObject * parent) : qx::QxModel<T, B>(other, parent) { ; }
   virtual ~QxModelService() { ; }

   virtual long qxCount(const qx::QxSqlQuery & query = qx::QxSqlQuery(), QSqlDatabase * pDatabase = NULL)
   {
      long lCount = 0;
      this->qxCount(lCount, query, pDatabase);
      return lCount;
   }

   virtual QSqlError qxCount(long & lCount, const qx::QxSqlQuery & query = qx::QxSqlQuery(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      S services;
      this->m_lastError = services.count(lCount, query);
      return this->m_lastError;
   }

   virtual QSqlError qxFetchById(const QVariant & id, const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      this->clear();
      type_ptr pItem = type_ptr(new T());
      if (! this->m_pDataMemberId) { qDebug("[QxOrm] problem with 'qxFetchById()' method : '%s'", "data member id not registered"); qAssert(false); }
      if (! this->m_pDataMemberId) { this->m_lastError = QSqlError("[QxOrm] problem with 'qxFetchById()' method : 'data member id not registered'", "", QSqlError::UnknownError); return this->m_lastError; }
      this->m_pDataMemberId->fromVariant(pItem.get(), id);

      type_primary_key primaryKey;
      qx::cvt::from_variant(id, primaryKey);
      this->beginInsertRows(QModelIndex(), 0, 0);
      this->m_model.insert(primaryKey, pItem);

      S services;
      this->m_lastError = services.fetchById(pItem, this->m_lstColumns, relation);
      this->updateShowEmptyLine();
      this->endInsertRows();
      return this->m_lastError;
   }

   virtual QSqlError qxFetchAll(const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      this->clear();

      S services;
      type_collection_ptr tmp = std::make_shared<type_collection>();
      this->m_lastError = services.fetchAll(tmp, this->m_lstColumns, relation);

      if (tmp->count() <= 0) { return this->m_lastError; }
      this->beginResetModel();
      this->m_model = (* tmp);
      this->updateShowEmptyLine();
      this->endResetModel();
      return this->m_lastError;
   }

   virtual QSqlError qxFetchByQuery(const qx::QxSqlQuery & query, const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      this->clear();

      S services;
      type_collection_ptr tmp = std::make_shared<type_collection>();
      this->m_lastError = services.fetchByQuery(query, tmp, this->m_lstColumns, relation);

      if (tmp->count() <= 0) { return this->m_lastError; }
      this->beginResetModel();
      this->m_model = (* tmp);
      this->updateShowEmptyLine();
      this->endResetModel();
      return this->m_lastError;
   }

   virtual QSqlError qxFetchRow(int row, const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      if ((row < 0) || (row >= this->m_model.count())) { return QSqlError(); }
      type_ptr pItem = this->m_model.getByIndex(row); if (! pItem) { return QSqlError(); }

      S services;
      this->m_lastError = services.fetchById(pItem, this->m_lstColumns, relation);
      if (this->m_lastError.isValid()) { return this->m_lastError; }

      QModelIndex idxTopLeft = this->index(row, 0);
      QModelIndex idxBottomRight = this->index(row, (this->m_lstDataMember.count() - 1));
      this->raiseEvent_dataChanged(idxTopLeft, idxBottomRight);
      this->updateKey(row);
      return this->m_lastError;
   }

   virtual QSqlError qxInsert(const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      if (relation.count() > 0) { this->syncAllNestedModel(relation); }

      type_collection_ptr tmp = std::make_shared<type_collection>();
      (* tmp) = this->m_model;

      S services;
      this->m_lastError = services.insert(tmp, relation);

      if (! this->m_lastError.isValid()) { this->updateAllKeys(); }
      return this->m_lastError;
   }

   virtual QSqlError qxInsertRow(int row, const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      if ((row < 0) || (row >= this->m_model.count())) { return QSqlError(); }
      if (relation.count() > 0) { this->syncNestedModel(row, relation); }
      type_ptr pItem = this->m_model.getByIndex(row); if (! pItem) { return QSqlError(); }

      S services;
      this->m_lastError = services.insert(pItem, relation);

      if (! this->m_lastError.isValid()) { this->updateKey(row); }
      return this->m_lastError;
   }

   virtual QSqlError qxUpdate(const qx::QxSqlQuery & query = qx::QxSqlQuery(), const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      if (relation.count() > 0) { this->syncAllNestedModel(relation); }

      type_collection_ptr tmp = std::make_shared<type_collection>();
      (* tmp) = this->m_model;

      S services;
      this->m_lastError = services.update(tmp, query, this->m_lstColumns, relation);

      if (! this->m_lastError.isValid()) { this->updateAllKeys(); }
      return this->m_lastError;
   }

   virtual QSqlError qxUpdateRow(int row, const qx::QxSqlQuery & query = qx::QxSqlQuery(), const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      if ((row < 0) || (row >= this->m_model.count())) { return QSqlError(); }
      if (relation.count() > 0) { this->syncNestedModel(row, relation); }
      type_ptr pItem = this->m_model.getByIndex(row); if (! pItem) { return QSqlError(); }

      S services;
      this->m_lastError = services.update(pItem, query, this->m_lstColumns, relation);

      if (! this->m_lastError.isValid()) { this->updateKey(row); }
      return this->m_lastError;
   }

   virtual QSqlError qxSave(const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      if (relation.count() > 0) { this->syncAllNestedModel(relation); }

      type_collection_ptr tmp = std::make_shared<type_collection>();
      (* tmp) = this->m_model;

      S services;
      this->m_lastError = services.save(tmp, relation);

      if (! this->m_lastError.isValid()) { this->updateAllKeys(); }
      return this->m_lastError;
   }

   virtual QSqlError qxSaveRow(int row, const QStringList & relation = QStringList(), QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      if ((row < 0) || (row >= this->m_model.count())) { return QSqlError(); }
      if (relation.count() > 0) { this->syncNestedModel(row, relation); }
      type_ptr pItem = this->m_model.getByIndex(row); if (! pItem) { return QSqlError(); }

      S services;
      this->m_lastError = services.save(pItem, relation);

      if (! this->m_lastError.isValid()) { this->updateKey(row); }
      return this->m_lastError;
   }

   virtual QSqlError qxDeleteById(const QVariant & id, QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      type_ptr pItem = type_ptr(new T());
      if (! this->m_pDataMemberId) { qDebug("[QxOrm] problem with 'qxDeleteById()' method : '%s'", "data member id not registered"); qAssert(false); }
      if (! this->m_pDataMemberId) { this->m_lastError = QSqlError("[QxOrm] problem with 'qxDeleteById()' method : 'data member id not registered'", "", QSqlError::UnknownError); return this->m_lastError; }
      this->m_pDataMemberId->fromVariant(pItem.get(), id);

      S services;
      this->m_lastError = services.deleteById(pItem);
      return this->m_lastError;
   }

   virtual QSqlError qxDeleteAll(QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      S services;
      this->m_lastError = services.deleteAll();
      return this->m_lastError;
   }

   virtual QSqlError qxDeleteByQuery(const qx::QxSqlQuery & query, QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      S services;
      this->m_lastError = services.deleteByQuery(query);
      return this->m_lastError;
   }

   virtual QSqlError qxDeleteRow(int row, QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      if ((row < 0) || (row >= this->m_model.count())) { return QSqlError(); }
      type_ptr pItem = this->m_model.getByIndex(row); if (! pItem) { return QSqlError(); }

      S services;
      this->m_lastError = services.deleteById(pItem);
      return this->m_lastError;
   }

   virtual QSqlError qxDestroyById(const QVariant & id, QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      type_ptr pItem = type_ptr(new T());
      if (! this->m_pDataMemberId) { qDebug("[QxOrm] problem with 'qxDeleteById()' method : '%s'", "data member id not registered"); qAssert(false); }
      if (! this->m_pDataMemberId) { this->m_lastError = QSqlError("[QxOrm] problem with 'qxDeleteById()' method : 'data member id not registered'", "", QSqlError::UnknownError); return this->m_lastError; }
      this->m_pDataMemberId->fromVariant(pItem.get(), id);

      S services;
      this->m_lastError = services.destroyById(pItem);
      return this->m_lastError;
   }

   virtual QSqlError qxDestroyAll(QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      S services;
      this->m_lastError = services.destroyAll();
      return this->m_lastError;
   }

   virtual QSqlError qxDestroyByQuery(const qx::QxSqlQuery & query, QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      S services;
      this->m_lastError = services.destroyByQuery(query);
      return this->m_lastError;
   }

   virtual QSqlError qxDestroyRow(int row, QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      if ((row < 0) || (row >= this->m_model.count())) { return QSqlError(); }
      type_ptr pItem = this->m_model.getByIndex(row); if (! pItem) { return QSqlError(); }

      S services;
      this->m_lastError = services.destroyById(pItem);
      return this->m_lastError;
   }

   virtual QSqlError qxExecuteQuery(qx::QxSqlQuery & query, QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      this->clear();

      S services;
      type_collection_ptr tmp = std::make_shared<type_collection>();
      this->m_lastError = services.executeQuery(query, tmp);

      if (tmp->count() <= 0) { return this->m_lastError; }
      this->beginResetModel();
      this->m_model = (* tmp);
      this->updateShowEmptyLine();
      this->endResetModel();
      return this->m_lastError;
   }

   virtual qx_bool qxExist(const QVariant & id, QSqlDatabase * pDatabase = NULL)
   {
      Q_UNUSED(pDatabase);
      type_ptr pItem = type_ptr(new T());
      if (! this->m_pDataMemberId) { qDebug("[QxOrm] problem with 'qxExist()' method : '%s'", "data member id not registered"); qAssert(false); }
      if (! this->m_pDataMemberId) { return qx_bool(false); }
      this->m_pDataMemberId->fromVariant(pItem.get(), id);

      S services;
      return services.exist(pItem);
   }

   virtual qx::QxInvalidValueX qxValidate(const QStringList & groups = QStringList())
   {
      Q_UNUSED(groups);
      S services;
      type_collection_ptr tmp = std::make_shared<type_collection>();
      (* tmp) = this->m_model;
      return services.isValid(tmp);
   }

   virtual qx::QxInvalidValueX qxValidateRow(int row, const QStringList & groups = QStringList())
   {
      Q_UNUSED(groups);
      if ((row < 0) || (row >= this->m_model.count())) { return qx::QxInvalidValueX(); }
      type_ptr pItem = this->m_model.getByIndex(row); if (! pItem) { return qx::QxInvalidValueX(); }

      S services;
      return services.isValid(pItem);
   }

protected:

#ifndef _QX_NO_JSON

   virtual QVariant getRelationshipValues_Helper(int row, const QString & relation, bool bLoadFromDatabase, const QString & sAppendRelations)
   {
      if ((row < 0) || (row >= this->m_model.count())) { return QVariant(); }
      if (! this->m_pDataMemberId || ! this->m_pDataMemberX || ! this->m_pDataMemberX->exist(relation)) { return QVariant(); }
      IxDataMember * pDataMember = this->m_pDataMemberX->get_WithDaoStrategy(relation); if (! pDataMember) { return QVariant(); }
      IxSqlRelation * pRelation = (pDataMember->hasSqlRelation() ? pDataMember->getSqlRelation() : NULL); if (! pRelation) { return QVariant(); }
      type_ptr pItem = this->m_model.getByIndex(row); if (! pItem) { return QVariant(); }
      type_ptr pItemTemp = pItem;

      if (bLoadFromDatabase)
      {
         QString sRelation = relation;
         if (! sAppendRelations.isEmpty() && ! sAppendRelations.startsWith("->") && ! sAppendRelations.startsWith(">>")) { sRelation += "->" + sAppendRelations; }
         else if (! sAppendRelations.isEmpty()) { sRelation += sAppendRelations; }
         pItemTemp = type_ptr(new T());
         QVariant id = this->m_pDataMemberId->toVariant(pItem.get());
         this->m_pDataMemberId->fromVariant(pItemTemp.get(), id);

         S services; QStringList columns;
         QSqlError daoError = services.fetchById(pItemTemp, columns, QStringList() << sRelation);
         if (daoError.isValid()) { return QVariant(); }
      }

      QJsonValue json = pDataMember->toJson(pItemTemp.get()); if (json.isNull()) { return QVariant(); }
      if (json.isArray()) { return json.toArray().toVariantList(); }
      return json.toObject().toVariantMap();
   }

#endif // _QX_NO_JSON

};

} // namespace qx

#endif // _QX_MODEL_SERVICE_H_