mirror of https://github.com/acanas/swad-core.git
135 lines
4.7 KiB
C
135 lines
4.7 KiB
C
// swad_duplicate_database.c: duplicate users operations with database
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/*
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SWAD (Shared Workspace At a Distance),
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is a web platform developed at the University of Granada (Spain),
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and used to support university teaching.
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This file is part of SWAD core.
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Copyright (C) 1999-2024 Antonio Cañas Vargas
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General 3 License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*****************************************************************************/
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/*********************************** Headers *********************************/
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/*****************************************************************************/
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#include "swad_database.h"
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#include "swad_global.h"
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/*****************************************************************************/
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/************** External global variables from others modules ****************/
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/*****************************************************************************/
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extern struct Globals Gbl;
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/*****************************************************************************/
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/******************* Get list of possible duplicate users ********************/
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/*****************************************************************************/
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unsigned Dup_DB_GetListDuplicateUsrs (MYSQL_RES **mysql_res)
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{
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return (unsigned)
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DB_QuerySELECT (mysql_res,"can not get possibly duplicate users",
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"SELECT UsrCod," // row[0]
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"COUNT(*) AS N," // row[1]
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"UNIX_TIMESTAMP(MIN(InformTime)) AS T" // row[2]
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" FROM usr_duplicated"
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" GROUP BY UsrCod"
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" ORDER BY N DESC,"
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"T DESC");
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}
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/*****************************************************************************/
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/***************** Get list of users similar to a given one ******************/
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/*****************************************************************************/
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unsigned Dup_DB_GetUsrsSimilarTo (MYSQL_RES **mysql_res,const struct Usr_Data *UsrDat)
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{
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if (UsrDat->Surname1[0] &&
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UsrDat->FrstName[0]) // Name and surname 1 not empty
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return (unsigned)
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DB_QuerySELECT (mysql_res,"can not get similar users",
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"SELECT DISTINCT "
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"UsrCod"
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" FROM usr_ids"
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" WHERE UsrID IN"
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" (SELECT UsrID"
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" FROM usr_ids"
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" WHERE UsrCod=%ld)"
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" UNION DISTINCT"
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" SELECT UsrCod"
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" FROM usr_data"
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" WHERE Surname1='%s'"
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" AND Surname2='%s'"
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" AND FirstName='%s'",
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UsrDat->UsrCod,
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UsrDat->Surname1,
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UsrDat->Surname2,
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UsrDat->FrstName);
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return (unsigned)
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DB_QuerySELECT (mysql_res,"can not get similar users",
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"SELECT DISTINCT "
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"UsrCod"
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" FROM usr_ids"
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" WHERE UsrID IN"
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" (SELECT UsrID"
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" FROM usr_ids"
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" WHERE UsrCod=%ld)",
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UsrDat->UsrCod);
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}
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/*****************************************************************************/
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/********** Check if a user is in list of possible duplicate users ***********/
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/*****************************************************************************/
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bool Dup_DB_CheckIfUsrIsDup (long UsrCod)
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{
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return
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DB_QueryEXISTS ("can not check if user is in list of possible duplicate users",
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"SELECT EXISTS"
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"(SELECT *"
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" FROM usr_duplicated"
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" WHERE UsrCod=%ld)",
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UsrCod);
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}
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/*****************************************************************************/
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/******************* Insert possible duplicate into database *****************/
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/*****************************************************************************/
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void Dup_DB_AddUsrToDuplicated (long UsrCod)
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{
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DB_QueryREPLACE ("can not report duplicate",
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"REPLACE INTO usr_duplicated"
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" (UsrCod,InformerCod,InformTime)"
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" VALUES"
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" (%ld,%ld,NOW())",
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UsrCod,
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Gbl.Usrs.Me.UsrDat.UsrCod);
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}
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/*****************************************************************************/
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/******* Remove user from list of possible duplicate users in database *******/
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/*****************************************************************************/
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void Dup_DB_RemoveUsrFromDuplicated (long UsrCod)
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{
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DB_QueryDELETE ("can not remove a user from possible duplicates",
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"DELETE FROM usr_duplicated"
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" WHERE UsrCod=%ld",
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UsrCod);
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}
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