mirror of https://github.com/acanas/swad-core.git
626 lines
22 KiB
C
626 lines
22 KiB
C
// swad_course_database.c: edition of courses 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 Public 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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#define _GNU_SOURCE // For asprintf
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#include <stdio.h> // For asprintf
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#include <stdlib.h> // For free
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#include "swad_course.h"
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#include "swad_course_config.h"
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#include "swad_database.h"
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#include "swad_error.h"
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#include "swad_global.h"
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#include "swad_hierarchy.h"
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#include "swad_hierarchy_database.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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/************* Add a new requested course to pending requests ****************/
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/*****************************************************************************/
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void Crs_DB_CreateCourse (struct Hie_Node *Crs,Hie_Status_t Status)
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{
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/***** Insert new course into pending requests *****/
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Crs->HieCod =
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DB_QueryINSERTandReturnCode ("can not create a new course",
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"INSERT INTO crs_courses"
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" (DegCod,Year,InsCrsCod,Status,RequesterUsrCod,"
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"ShortName,FullName)"
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" VALUES"
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" (%ld,%u,'%s',%u,%ld,"
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"'%s','%s')",
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Crs->PrtCod,
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Crs->Specific.Year,
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Crs->InstitutionalCod,
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(unsigned) Status,
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Gbl.Usrs.Me.UsrDat.UsrCod,
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Crs->ShrtName,
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Crs->FullName);
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}
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/*****************************************************************************/
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/******************* Get courses of a degree from database *******************/
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/*****************************************************************************/
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unsigned Crs_DB_GetCrssInDeg (MYSQL_RES **mysql_res,long DegCod)
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{
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return (unsigned)
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DB_QuerySELECT (mysql_res,"can not get courses of a degree",
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"SELECT CrsCod"
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" FROM crs_courses"
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" WHERE DegCod=%ld",
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DegCod);
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}
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/*****************************************************************************/
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/******************** Get courses in current degree *********************/
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/*****************************************************************************/
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unsigned Crs_DB_GetCrssInCurrentDegBasic (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 courses of a degree",
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"SELECT CrsCod," // row[0]
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"ShortName" // row[1]
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" FROM crs_courses"
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" WHERE DegCod=%ld"
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" ORDER BY ShortName",
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Gbl.Hierarchy.Node[Hie_DEG].HieCod);
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}
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/*****************************************************************************/
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/******************** Get courses in current degree *********************/
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/*****************************************************************************/
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unsigned Crs_DB_GetCrssInCurrentDegFull (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 courses of a degree",
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"SELECT CrsCod," // row[0]
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"DegCod," // row[1]
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"Year," // row[2]
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"InsCrsCod," // row[3]
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"Status," // row[4]
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"RequesterUsrCod," // row[5]
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"ShortName," // row[6]
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"FullName" // row[7]
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" FROM crs_courses"
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" WHERE DegCod=%ld"
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" AND (Status & %u)=0"
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" ORDER BY Year,"
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"ShortName",
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Gbl.Hierarchy.Node[Hie_DEG].HieCod,
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(unsigned) Hie_STATUS_BIT_REMOVED); // All courses except those removed
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}
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/*****************************************************************************/
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/********************* Get data of a course from its code ********************/
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/*****************************************************************************/
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unsigned Crs_DB_GetCourseDataByCod (MYSQL_RES **mysql_res,long CrsCod)
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{
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return (unsigned)
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DB_QuerySELECT (mysql_res,"can not get data of a course",
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"SELECT CrsCod," // row[0]
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"DegCod," // row[1]
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"Year," // row[2]
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"InsCrsCod," // row[3]
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"Status," // row[4]
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"RequesterUsrCod," // row[5]
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"ShortName," // row[6]
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"FullName" // row[7]
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" FROM crs_courses"
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" WHERE CrsCod=%ld",
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CrsCod);
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}
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/*****************************************************************************/
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/************* Get the degree code of a course from its code *****************/
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/*****************************************************************************/
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long Crs_DB_GetDegCodOfCourseByCod (long CrsCod)
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{
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/***** Trivial check: course code should be > 0 *****/
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if (CrsCod <= 0)
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return -1L;
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/***** Get the degree code of a course from database *****/
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return DB_QuerySELECTCode ("can not get the degree of a course",
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"SELECT DegCod"
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" FROM crs_courses"
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" WHERE CrsCod=%ld",
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CrsCod);
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}
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/*****************************************************************************/
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/******* Get the short names of degree and course from a course code *********/
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/*****************************************************************************/
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void Crs_DB_GetShortNamesByCod (long CrsCod,
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char CrsShortName[Nam_MAX_BYTES_SHRT_NAME + 1],
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char DegShortName[Nam_MAX_BYTES_SHRT_NAME + 1])
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{
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MYSQL_RES *mysql_res;
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MYSQL_ROW row;
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DegShortName[0] = CrsShortName[0] = '\0';
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/***** Trivial check: course code should be > 0 *****/
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if (CrsCod <= 0)
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return;
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/***** Get the short name of a degree from database *****/
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if (DB_QuerySELECT (&mysql_res,"can not get the short name of a course",
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"SELECT crs_courses.ShortName," // row[0]
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"deg_degrees.ShortName" // row[1]
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" FROM crs_courses,"
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"deg_degrees"
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" WHERE crs_courses.CrsCod=%ld"
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" AND crs_courses.DegCod=deg_degrees.DegCod",
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CrsCod) == 1)
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{
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/***** Get the course short name and degree short name *****/
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row = mysql_fetch_row (mysql_res);
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Str_Copy (CrsShortName,row[0],Nam_MAX_BYTES_SHRT_NAME);
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Str_Copy (DegShortName,row[1],Nam_MAX_BYTES_SHRT_NAME);
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}
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/***** Free structure that stores the query result *****/
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DB_FreeMySQLResult (&mysql_res);
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}
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/*****************************************************************************/
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/************** Check if course code exists in existing courses **************/
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/*****************************************************************************/
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bool Crs_DB_CheckIfCrsCodExists (long CrsCod)
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{
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return
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DB_QueryEXISTS ("can not check if a course already existed",
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"SELECT EXISTS"
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"(SELECT *"
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" FROM crs_courses"
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" WHERE CrsCod=%ld)",
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CrsCod);
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}
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/*****************************************************************************/
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/********** Check if the name of course exists in existing courses ***********/
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/*****************************************************************************/
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bool Crs_DB_CheckIfCrsNameExistsInYearOfDeg (const char *FldName,const char *Name,
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long Cod,long PrtCod,unsigned Year)
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{
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return
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DB_QueryEXISTS ("can not check if the name of a course already existed",
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"SELECT EXISTS"
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"(SELECT *"
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" FROM crs_courses"
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" WHERE DegCod=%ld"
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" AND Year=%u"
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" AND %s='%s'"
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" AND CrsCod<>%ld)",
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PrtCod,
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Year,
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FldName,Name,
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Cod);
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}
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/*****************************************************************************/
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/************************** Write courses of a user **************************/
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/*****************************************************************************/
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unsigned Crs_DB_GetCrssOfAUsr (MYSQL_RES **mysql_res,long UsrCod,Rol_Role_t Role)
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{
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char *SubQuery;
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unsigned NumCrss;
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/***** Get courses of a user from database *****/
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if (Role == Rol_UNK) // Role == Rol_UNK ==> any role
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{
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if (asprintf (&SubQuery,"%s","") < 0)
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Err_NotEnoughMemoryExit ();
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}
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else
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{
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if (asprintf (&SubQuery," AND crs_users.Role=%u",(unsigned) Role) < 0)
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Err_NotEnoughMemoryExit ();
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}
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NumCrss = (unsigned)
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DB_QuerySELECT (mysql_res,"can not get courses of a user",
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"SELECT deg_degrees.DegCod," // row[0]
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"crs_courses.CrsCod," // row[1]
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"deg_degrees.ShortName," // row[2]
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"deg_degrees.FullName," // row[3]
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"crs_courses.Year," // row[4]
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"crs_courses.FullName," // row[5]
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"ctr_centers.ShortName," // row[6]
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"crs_users.Accepted" // row[7]
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" FROM crs_users,"
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"crs_courses,"
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"deg_degrees,"
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"ctr_centers"
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" WHERE crs_users.UsrCod=%ld%s"
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" AND crs_users.CrsCod=crs_courses.CrsCod"
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" AND crs_courses.DegCod=deg_degrees.DegCod"
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" AND deg_degrees.CtrCod=ctr_centers.CtrCod"
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" ORDER BY deg_degrees.FullName,"
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"crs_courses.Year,"
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"crs_courses.FullName",
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UsrCod,SubQuery);
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/***** Free allocated memory for subquery *****/
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free (SubQuery);
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return NumCrss;
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}
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/*****************************************************************************/
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/************************** Get old courses from database ********************/
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/*****************************************************************************/
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unsigned Crs_DB_GetOldCrss (MYSQL_RES **mysql_res,unsigned long SecondsWithoutAccess)
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{
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return (unsigned)
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DB_QuerySELECT (mysql_res,"can not get old courses",
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"SELECT CrsCod"
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" FROM crs_last"
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" WHERE LastTime<FROM_UNIXTIME(UNIX_TIMESTAMP()-%lu)"
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" AND CrsCod NOT IN"
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" (SELECT DISTINCT "
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"CrsCod"
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" FROM crs_users)",
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SecondsWithoutAccess);
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}
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/*****************************************************************************/
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/************************* Search courses in database ************************/
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/*****************************************************************************/
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// Returns number of courses found
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unsigned Crs_DB_SearchCrss (MYSQL_RES **mysql_res,
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const char SearchQuery[Sch_MAX_BYTES_SEARCH_QUERY + 1],
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const char *RangeQuery)
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{
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return (unsigned)
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DB_QuerySELECT (mysql_res,"can not get courses",
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"SELECT deg_degrees.DegCod," // row[0]
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"crs_courses.CrsCod," // row[1]
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"deg_degrees.ShortName," // row[2]
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"deg_degrees.FullName," // row[3]
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"crs_courses.Year," // row[4]
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"crs_courses.FullName," // row[5]
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"ctr_centers.ShortName" // row[6]
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" FROM crs_courses,"
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"deg_degrees,"
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"ctr_centers,"
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"ins_instits,"
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"cty_countrs"
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" WHERE %s"
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" AND crs_courses.DegCod=deg_degrees.DegCod"
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" AND deg_degrees.CtrCod=ctr_centers.CtrCod"
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" AND ctr_centers.InsCod=ins_instits.InsCod"
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" AND ins_instits.CtyCod=cty_countrs.CtyCod"
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"%s"
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" ORDER BY crs_courses.FullName,"
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"ins_instits.FullName,"
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"deg_degrees.FullName,"
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"crs_courses.Year",
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SearchQuery,
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RangeQuery);
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}
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/*****************************************************************************/
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/********************** Get number of courses in system **********************/
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/*****************************************************************************/
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unsigned Crs_DB_GetNumCrssInSys (__attribute__((unused)) long SysCod)
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{
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return (unsigned) DB_GetNumRowsTable ("crs_courses");
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}
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/*****************************************************************************/
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/******************** Get number of courses in a country *********************/
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/*****************************************************************************/
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unsigned Crs_DB_GetNumCrssInCty (long CtyCod)
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{
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return (unsigned)
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DB_QueryCOUNT ("can not get the number of courses in a country",
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"SELECT COUNT(*)"
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" FROM ins_instits,"
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"ctr_centers,"
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"deg_degrees,"
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"crs_courses"
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" WHERE ins_instits.CtyCod=%ld"
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" AND ins_instits.InsCod=ctr_centers.InsCod"
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" AND ctr_centers.CtrCod=deg_degrees.CtrCod"
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" AND deg_degrees.DegCod=crs_courses.DegCod",
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CtyCod);
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}
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/*****************************************************************************/
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/****************** Get number of courses in an institution ******************/
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/*****************************************************************************/
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unsigned Crs_DB_GetNumCrssInIns (long InsCod)
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{
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return (unsigned)
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DB_QueryCOUNT ("can not get the number of courses in an institution",
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"SELECT COUNT(*)"
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" FROM ctr_centers,"
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"deg_degrees,"
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"crs_courses"
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" WHERE ctr_centers.InsCod=%ld"
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" AND ctr_centers.CtrCod=deg_degrees.CtrCod"
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" AND deg_degrees.DegCod=crs_courses.DegCod",
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InsCod);
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}
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/*****************************************************************************/
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/********************* Get number of courses in a center *********************/
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/*****************************************************************************/
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unsigned Crs_DB_GetNumCrssInCtr (long CtrCod)
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{
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return (unsigned)
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DB_QueryCOUNT ("can not get the number of courses in a center",
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"SELECT COUNT(*)"
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" FROM deg_degrees,"
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"crs_courses"
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" WHERE deg_degrees.CtrCod=%ld"
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" AND deg_degrees.DegCod=crs_courses.DegCod",
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CtrCod);
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}
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/*****************************************************************************/
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/********************* Get number of courses in a degree *********************/
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/*****************************************************************************/
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unsigned Crs_DB_GetNumCrssInDeg (long DegCod)
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{
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return (unsigned)
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DB_QueryCOUNT ("can not get the number of courses in a degree",
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"SELECT COUNT(*)"
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" FROM crs_courses"
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" WHERE DegCod=%ld",
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DegCod);
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}
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/*****************************************************************************/
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/******************** Get number of courses with users ***********************/
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/*****************************************************************************/
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unsigned Crs_DB_GetNumCrssWithUsrs (Rol_Role_t Role,
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Hie_Level_t Level,long HieCod)
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{
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char SubQuery[128];
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Hie_DB_BuildSubquery (SubQuery,Level,HieCod);
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return (unsigned)
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DB_QueryCOUNT ("can not get number of courses with users",
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"SELECT COUNT(DISTINCT crs_courses.CrsCod)"
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" FROM ins_instits,"
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"ctr_centers,"
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"deg_degrees,"
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"crs_courses,"
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"crs_users"
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" WHERE %s"
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"ins_instits.InsCod=ctr_centers.InsCod"
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" AND ctr_centers.CtrCod=deg_degrees.CtrCod"
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" AND deg_degrees.DegCod=crs_courses.DegCod"
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" AND crs_courses.CrsCod=crs_users.CrsCod"
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" AND crs_users.Role=%u",
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SubQuery,
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(unsigned) Role);
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}
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/*****************************************************************************/
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/**************** Get all courses of a user from database ********************/
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/*****************************************************************************/
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// Returns the number of rows of the result
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unsigned Crs_DB_GetCrssFromUsr (MYSQL_RES **mysql_res,long UsrCod,long PrtCod)
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{
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if (PrtCod > 0) // Courses in a degree
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return (unsigned)
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DB_QuerySELECT (mysql_res,"can not get the courses a user belongs to",
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"SELECT crs_users.CrsCod," // row[0]
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"crs_users.Role," // row[1]
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"crs_courses.DegCod" // row[2]
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" FROM crs_users,"
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"crs_courses"
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" WHERE crs_users.UsrCod=%ld"
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" AND crs_users.CrsCod=crs_courses.CrsCod"
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" AND crs_courses.DegCod=%ld"
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" ORDER BY crs_courses.ShortName",
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UsrCod,
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PrtCod);
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else // All the courses
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return (unsigned)
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DB_QuerySELECT (mysql_res,"can not get the courses a user belongs to",
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"SELECT crs_users.CrsCod," // row[0]
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"crs_users.Role," // row[1]
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"crs_courses.DegCod" // row[2]
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" FROM crs_users,"
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"crs_courses,"
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"deg_degrees"
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" WHERE crs_users.UsrCod=%ld"
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" AND crs_users.CrsCod=crs_courses.CrsCod"
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" AND crs_courses.DegCod=deg_degrees.DegCod"
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" ORDER BY deg_degrees.ShortName,"
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"crs_courses.ShortName",
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UsrCod);
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}
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/*****************************************************************************/
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/************* Change the institutional course code of a course **************/
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/*****************************************************************************/
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void Crs_DB_UpdateInstitutionalCrsCod (long CrsCod,const char *NewInstitutionalCrsCod)
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{
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DB_QueryUPDATE ("can not update the institutional code of a course",
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"UPDATE crs_courses"
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" SET InsCrsCod='%s'"
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" WHERE CrsCod=%ld",
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NewInstitutionalCrsCod,
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CrsCod);
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}
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|
/*****************************************************************************/
|
|
/****************** Change the year/semester of a course *********************/
|
|
/*****************************************************************************/
|
|
|
|
void Crs_DB_UpdateCrsYear (long CrsCod,unsigned NewYear)
|
|
{
|
|
DB_QueryUPDATE ("can not update the year of a course",
|
|
"UPDATE crs_courses"
|
|
" SET Year=%u"
|
|
" WHERE CrsCod=%ld",
|
|
NewYear,
|
|
CrsCod);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/***************** Update course name in table of courses ********************/
|
|
/*****************************************************************************/
|
|
|
|
void Crs_DB_UpdateCrsName (long CrsCod,
|
|
const char *FldName,const char *NewCrsName)
|
|
{
|
|
DB_QueryUPDATE ("can not update the name of a course",
|
|
"UPDATE crs_courses"
|
|
" SET %s='%s'"
|
|
" WHERE CrsCod=%ld",
|
|
FldName,NewCrsName,
|
|
CrsCod);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/********************** Update degree in table of courses ********************/
|
|
/*****************************************************************************/
|
|
|
|
void Crs_DB_UpdateCrsDeg (long CrsCod,long DegCod)
|
|
{
|
|
DB_QueryUPDATE ("can not move course to another degree",
|
|
"UPDATE crs_courses"
|
|
" SET DegCod=%ld"
|
|
" WHERE CrsCod=%ld",
|
|
DegCod,
|
|
CrsCod);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/********************** Change the status of a course ************************/
|
|
/*****************************************************************************/
|
|
|
|
void Crs_DB_UpdateCrsStatus (long CrsCod,Hie_Status_t Status)
|
|
{
|
|
DB_QueryUPDATE ("can not update the status of a course",
|
|
"UPDATE crs_courses"
|
|
" SET Status=%u"
|
|
" WHERE CrsCod=%ld",
|
|
(unsigned) Status,
|
|
CrsCod);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/***************** Update my last click in current course ********************/
|
|
/*****************************************************************************/
|
|
|
|
void Crs_DB_UpdateCrsLastClick (void)
|
|
{
|
|
/***** Update last access to current course *****/
|
|
DB_QueryREPLACE ("can not update last access to current course",
|
|
"REPLACE INTO crs_last"
|
|
" (CrsCod,LastTime)"
|
|
" VALUES"
|
|
" (%ld,NOW())",
|
|
Gbl.Hierarchy.Node[Hie_CRS].HieCod);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/******************** Remove information about a course **********************/
|
|
/*****************************************************************************/
|
|
|
|
void Crs_DB_RemoveCrsInfo (long CrsCod)
|
|
{
|
|
/* Remove information source of the course */
|
|
DB_QueryDELETE ("can not remove info sources of a course",
|
|
"DELETE FROM crs_info_src"
|
|
" WHERE CrsCod=%ld",
|
|
CrsCod);
|
|
|
|
/* Remove information text of the course */
|
|
DB_QueryDELETE ("can not remove info of a course",
|
|
"DELETE FROM crs_info_txt"
|
|
" WHERE CrsCod=%ld",
|
|
CrsCod);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/********************** Remove timetable of a course *************************/
|
|
/*****************************************************************************/
|
|
|
|
void Crs_DB_RemoveCrsTimetable (long CrsCod)
|
|
{
|
|
DB_QueryDELETE ("can not remove the timetable of a course",
|
|
"DELETE FROM tmt_courses"
|
|
" WHERE CrsCod=%ld",
|
|
CrsCod);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/***** Remove course from table of last accesses to courses in database ******/
|
|
/*****************************************************************************/
|
|
|
|
void Crs_DB_RemoveCrsLast (long CrsCod)
|
|
{
|
|
DB_QueryDELETE ("can not remove a course",
|
|
"DELETE FROM crs_last"
|
|
" WHERE CrsCod=%ld",
|
|
CrsCod);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/************* Remove course from table of courses in database ***************/
|
|
/*****************************************************************************/
|
|
|
|
void Crs_DB_RemoveCrs (long CrsCod)
|
|
{
|
|
DB_QueryDELETE ("can not remove a course",
|
|
"DELETE FROM crs_courses"
|
|
" WHERE CrsCod=%ld",
|
|
CrsCod);
|
|
}
|