/****************************************************************************
**
** 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
**
****************************************************************************/

#include <QxPrecompiled.h>

#include <QxDao/QxSqlGenerator/QxSqlGenerator_Standard.h>

#include <QxDao/QxSqlDatabase.h>
#include <QxDao/IxDao_Helper.h>

#include <QxMemLeak/mem_leak.h>

namespace qx
{
   namespace dao
   {
      namespace detail
      {

         QxSqlGenerator_Standard::QxSqlGenerator_Standard() : IxSqlGenerator() { ; }

         QxSqlGenerator_Standard::~QxSqlGenerator_Standard() { ; }

         void QxSqlGenerator_Standard::init() { ; }

         QString QxSqlGenerator_Standard::getAutoIncrement() const { return "AUTOINCREMENT"; }

         QString QxSqlGenerator_Standard::getWildCard() const { return "%"; }

         QString QxSqlGenerator_Standard::getTableAliasSep() const { return " AS "; }

         QString QxSqlGenerator_Standard::getLimit(const QxSqlLimit *pLimit) const
         {
            if (!pLimit)
            {
               qAssert(false);
               return "";
            }
            QString sStartRow = pLimit->getStartRow_ParamKey();
            QString sRowsCount = pLimit->getRowsCount_ParamKey();
            return ("LIMIT " + sRowsCount + " OFFSET " + sStartRow);
         }

         void QxSqlGenerator_Standard::resolveLimit(QSqlQuery &query, const QxSqlLimit *pLimit, qx::QxCollection<QString, QVariantList> *pLstExecBatch /* = NULL */) const
         {
            if (!pLimit)
            {
               qAssert(false);
               return;
            }
            QString sStartRow = pLimit->getStartRow_ParamKey();
            QString sRowsCount = pLimit->getRowsCount_ParamKey();
            int iStartRow(pLimit->getStartRow()), iRowsCount(pLimit->getRowsCount());
            bool bQuestionMark = (qx::QxSqlDatabase::getSingleton()->getSqlPlaceHolderStyle() == qx::QxSqlDatabase::ph_style_question_mark);

            if (pLstExecBatch)
            {
               if (!pLstExecBatch->exist(sRowsCount))
               {
                  QVariantList empty;
                  pLstExecBatch->insert(sRowsCount, empty);
               }
               if (!pLstExecBatch->exist(sStartRow))
               {
                  QVariantList empty;
                  pLstExecBatch->insert(sStartRow, empty);
               }
               QVariantList &valuesRowsCount = const_cast<QVariantList &>(pLstExecBatch->getByKey(sRowsCount));
               QVariantList &valuesStartRow = const_cast<QVariantList &>(pLstExecBatch->getByKey(sStartRow));
               valuesRowsCount.append(iRowsCount);
               valuesStartRow.append(iStartRow);
            }
            else
            {
               if (bQuestionMark)
               {
                  query.addBindValue(iRowsCount);
                  query.addBindValue(iStartRow);
               }
               else
               {
                  query.bindValue(sRowsCount, iRowsCount);
                  query.bindValue(sStartRow, iStartRow);
               }
            }
         }

         void QxSqlGenerator_Standard::postProcess(QString &sql, const QxSqlLimit *pLimit) const
         {
            Q_UNUSED(sql);
            Q_UNUSED(pLimit);
         }

         void QxSqlGenerator_Standard::onBeforeInsert(IxDao_Helper *pDaoHelper, void *pOwner) const
         {
            Q_UNUSED(pDaoHelper);
            Q_UNUSED(pOwner);
         }

         void QxSqlGenerator_Standard::onAfterInsert(IxDao_Helper *pDaoHelper, void *pOwner) const
         {
            Q_UNUSED(pDaoHelper);
            Q_UNUSED(pOwner);
         }

         void QxSqlGenerator_Standard::onBeforeUpdate(IxDao_Helper *pDaoHelper, void *pOwner) const
         {
            Q_UNUSED(pDaoHelper);
            Q_UNUSED(pOwner);
         }

         void QxSqlGenerator_Standard::onAfterUpdate(IxDao_Helper *pDaoHelper, void *pOwner) const
         {
            Q_UNUSED(pDaoHelper);
            Q_UNUSED(pOwner);
         }

         void QxSqlGenerator_Standard::onBeforeDelete(IxDao_Helper *pDaoHelper, void *pOwner) const
         {
            Q_UNUSED(pDaoHelper);
            Q_UNUSED(pOwner);
         }

         void QxSqlGenerator_Standard::onAfterDelete(IxDao_Helper *pDaoHelper, void *pOwner) const
         {
            Q_UNUSED(pDaoHelper);
            Q_UNUSED(pOwner);
         }

         void QxSqlGenerator_Standard::checkSqlInsert(IxDao_Helper *pDaoHelper, QString &sql) const
         {
            Q_UNUSED(pDaoHelper);
            Q_UNUSED(sql);
         }

         void QxSqlGenerator_Standard::onBeforeSqlPrepare(IxDao_Helper *pDaoHelper, QString &sql) const
         {
            Q_UNUSED(pDaoHelper);
            Q_UNUSED(sql);
         }

         void QxSqlGenerator_Standard::formatSqlQuery(IxDao_Helper *pDaoHelper, QString &sql) const
         {
            Q_UNUSED(pDaoHelper);

            if (sql.startsWith("SELECT "))
            {
               sql = "\nSELECT " + sql.right(sql.size() - 7);
            }
            else if (sql.startsWith("INSERT "))
            {
               sql = "\nINSERT " + sql.right(sql.size() - 7);
            }
            else if (sql.startsWith("UPDATE "))
            {
               sql = "\nUPDATE " + sql.right(sql.size() - 7);
            }
            else if (sql.startsWith("DELETE "))
            {
               sql = "\nDELETE " + sql.right(sql.size() - 7);
            }
            else if (sql.startsWith("CREATE "))
            {
               sql = "\nCREATE " + sql.right(sql.size() - 7);
            }

            sql.replace(" FROM ", "\n  FROM ");
            sql.replace(" WHERE ", "\n  WHERE ");
            sql.replace(" LEFT OUTER JOIN ", "\n  LEFT OUTER JOIN ");
            sql.replace(" INNER JOIN ", "\n  INNER JOIN ");
            sql.replace(" ORDER BY ", "\n  ORDER BY ");
            sql.replace(" GROUP BY ", "\n  GROUP BY ");
            sql.replace(" AND ", "\n  AND ");
            sql.replace(" OR ", "\n  OR ");
            sql.replace(" VALUES ", "\n  VALUES ");
            sql.replace(" SET ", "\n  SET ");
            sql.replace(" RETURNING ", "\n  RETURNING ");
            sql.replace(" LIMIT ", "\n  LIMIT ");
            sql += "\n";
         }

      } // namespace detail
   } // namespace dao
} // namespace qx
