/*
 * Copyright (C) 2005-2011 MaNGOS <http://getmangos.com/>
 * Copyright (C) 2009-2011 MaNGOSZero <https://github.com/mangos/zero>
 * Copyright (C) 2011-2016 Nostalrius <https://nostalrius.org>
 * Copyright (C) 2016-2017 Elysium Project <https://github.com/elysium-project>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifdef DO_POSTGRESQL

#include "DatabaseEnv.h"

QueryResultPostgre::QueryResultPostgre(PGresult *result, uint64 rowCount, uint32 fieldCount) :
 QueryResult(rowCount, fieldCount), mResult(result), mTableIndex(0)
{

 mCurrentRow = new Field[mFieldCount];
 MANGOS_ASSERT(mCurrentRow);

 for (uint32 i = 0; i < mFieldCount; i++)
 mCurrentRow[i].SetType(ConvertNativeType(PQftype( result, i )));
}

QueryResultPostgre::~QueryResultPostgre()
{
 EndQuery();
}

bool QueryResultPostgre::NextRow()
{
 if (!mResult)
 return false;

 if (mTableIndex >= mRowCount)
 {
 EndQuery();
 return false;
 }

 char* pPQgetvalue;
 for (int j = 0; j < mFieldCount; j++)
 {
 pPQgetvalue = PQgetvalue(mResult, mTableIndex, j);
 if(pPQgetvalue && !(*pPQgetvalue))
 pPQgetvalue = NULL;

 mCurrentRow[j].SetValue(pPQgetvalue);
 }
 ++mTableIndex;

 return true;
}

void QueryResultPostgre::EndQuery()
{
 if (mCurrentRow)
 {
 delete [] mCurrentRow;
 mCurrentRow = 0;
 }

 if (mResult)
 {
 PQclear(mResult);
 mResult = 0;
 }
}

// see types in #include <postgre/pg_type.h>
enum Field::DataTypes QueryResultPostgre::ConvertNativeType(Oid pOid ) const
{
 switch (pOid)
 {
 case BPCHAROID:
 case CIDOID:
 case CIDROID:
 case CIRCLEOID:
 case INETOID:
 case NAMEOID:
 case TEXTOID:
 case VARCHAROID:
 return Field::DB_TYPE_STRING;
 case CASHOID:
 case FLOAT4OID:
 case FLOAT8OID:
 case NUMERICOID:
 return Field::DB_TYPE_FLOAT;
 case DATEOID: // Date
 case RELTIMEOID: // Date
 case TIMEOID: // Time
 case TIMETZOID: // Time
 case ABSTIMEOID: // DateTime
 case INTERVALOID: // DateTime
 case TIMESTAMPOID: // DateTime
 case TIMESTAMPTZOID: // DateTime
 case INT2OID: // Int
 case INT2VECTOROID: // Int
 case INT4OID: // Int
 case OIDOID: // Int
 case CHAROID: // UInt
 case INT8OID: // LongLong
 return Field::DB_TYPE_INTEGER;
 case BOOLOID:
 return Field::DB_TYPE_BOOL; // Bool
/*
 case BOXOID: Rect;
 case LINEOID: Rect;
 case VARBITOID: BitArray;
 case BYTEAOID: ByteArray;
*/
 case LSEGOID:
 case OIDVECTOROID:
 case PATHOID:
 case POINTOID:
 case POLYGONOID:
 case REGPROCOID:
 case TIDOID:
 case TINTERVALOID:
 case UNKNOWNOID:
 case XIDOID:
 default:
 return Field::DB_TYPE_UNKNOWN;
 }
 return Field::DB_TYPE_UNKNOWN;
}
#endif