swad-core/swad_chat_database.c

63 lines
2.4 KiB
C

// swad_chat_database.c: chat operations with database
/*
SWAD (Shared Workspace At a Distance),
is a web platform developed at the University of Granada (Spain),
and used to support university teaching.
This file is part of SWAD core.
Copyright (C) 1999-2024 Antonio Cañas Vargas
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*****************************************************************************/
/********************************* Headers ***********************************/
/*****************************************************************************/
#include <mysql/mysql.h> // To access MySQL databases
#include "swad_chat.h"
#include "swad_chat_database.h"
#include "swad_database.h"
/*****************************************************************************/
/********************** Get list of chat rooms with users ********************/
/*****************************************************************************/
unsigned Cht_DB_GetListOfChatRoomsWithUsrs (MYSQL_RES **mysql_res)
{
return (unsigned)
DB_QuerySELECT (mysql_res,"can not get chat rooms with connected users",
"SELECT RoomCode," // row[0]
"NumUsrs" // row[1]
" FROM cht_rooms"
" WHERE NumUsrs>0"
" ORDER BY NumUsrs DESC,"
"RoomCode");
}
/*****************************************************************************/
/*************** Get number of users connected to a chat room ****************/
/*****************************************************************************/
unsigned Cht_DB_GetNumUsrsInChatRoom (const char *RoomCode)
{
return DB_QuerySELECTUnsigned ("can not get number of users"
" connected to a chat room",
"SELECT NumUsrs"
" FROM cht_rooms"
" WHERE RoomCode='%s'",
RoomCode);
}