mirror of https://github.com/acanas/swad-core.git
703 lines
26 KiB
C
703 lines
26 KiB
C
// swad_follow.c: user's followers and followed
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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) 1999-2016 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 <stdbool.h> // For boolean type
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#include <stdio.h> // For sprintf
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#include <string.h> // For string functions
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#include "swad_database.h"
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#include "swad_follow.h"
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#include "swad_global.h"
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#include "swad_notification.h"
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#include "swad_profile.h"
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#include "swad_user.h"
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/*****************************************************************************/
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/****************************** Public constants *****************************/
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/*****************************************************************************/
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/*****************************************************************************/
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/***************************** Private constants *****************************/
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/*****************************************************************************/
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#define Fol_NUM_COLUMNS_FOLLOW 3
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/*****************************************************************************/
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/****************************** Internal types *******************************/
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/*****************************************************************************/
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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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/************************* Internal global variables *************************/
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/*****************************************************************************/
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/*****************************************************************************/
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/***************************** Private prototypes ****************************/
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/*****************************************************************************/
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static void Fol_ShowNumberOfFollowingOrFollowers (const struct UsrData *UsrDat,
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unsigned NumUsrs,
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Act_Action_t Action,
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const char *Title);
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static void Fol_ShowFollowedOrFollower (const struct UsrData *UsrDat);
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/*****************************************************************************/
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/*************** Check if a user is a follower of another user ***************/
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/*****************************************************************************/
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bool Fol_CheckUsrIsFollowerOf (long FollowerCod,long FollowedCod)
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{
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char Query[256];
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if (FollowerCod == FollowedCod)
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return false;
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/***** Check if a user is a follower of another user *****/
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sprintf (Query,"SELECT COUNT(*) FROM usr_follow"
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" WHERE FollowerCod='%ld' AND FollowedCod='%ld'",
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FollowerCod,FollowedCod);
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return (DB_QueryCOUNT (Query,"can not get if a user is a follower of another one") != 0);
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}
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/*****************************************************************************/
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/*************************** Get number of followed **************************/
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/*****************************************************************************/
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unsigned Fol_GetNumFollowing (long UsrCod)
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{
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char Query[128];
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/***** Check if a user is a follower of another user *****/
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sprintf (Query,"SELECT COUNT(*) FROM usr_follow WHERE FollowerCod='%ld'",
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UsrCod);
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return DB_QueryCOUNT (Query,"can not get number of followed");
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}
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/*****************************************************************************/
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/************************** Get number of followers **************************/
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/*****************************************************************************/
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unsigned Fol_GetNumFollowers (long UsrCod)
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{
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char Query[128];
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/***** Check if a user is a follower of another user *****/
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sprintf (Query,"SELECT COUNT(*) FROM usr_follow WHERE FollowedCod='%ld'",
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UsrCod);
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return DB_QueryCOUNT (Query,"can not get number of followers");
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}
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/*****************************************************************************/
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/**************** Show following and followers of a user *********************/
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/*****************************************************************************/
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void Fol_ShowFollowingAndFollowers (const struct UsrData *UsrDat,
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unsigned NumFollowing,unsigned NumFollowers,
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bool UsrFollowsMe,bool IFollowUsr)
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{
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extern const char *Txt_FOLLOWS_YOU;
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extern const char *Txt_Following;
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extern const char *Txt_Followers;
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extern const char *Txt_Following_unfollow;
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extern const char *Txt_Unfollow;
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extern const char *Txt_Follow;
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bool ItsMe = (UsrDat->UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod);
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/***** Start section *****/
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fprintf (Gbl.F.Out,"<section id=\"follow_section\">");
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/***** Followed users *****/
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fprintf (Gbl.F.Out,"<div id=\"following_side\">"
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"<div class=\"FOLLOW_SIDE\">");
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/* User follows me? */
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fprintf (Gbl.F.Out,"<div id=\"follows_me\" class=\"DAT_LIGHT\">");
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if (UsrFollowsMe)
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fprintf (Gbl.F.Out,"%s",Txt_FOLLOWS_YOU);
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fprintf (Gbl.F.Out,"</div>");
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/* Number of followed */
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Fol_ShowNumberOfFollowingOrFollowers (UsrDat,
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NumFollowing,
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ActSeeFlg,Txt_Following);
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/* End following side */
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fprintf (Gbl.F.Out,"</div>"
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"</div>");
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/***** Followers *****/
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fprintf (Gbl.F.Out,"<div id=\"followers_side\">"
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"<div class=\"FOLLOW_SIDE\">");
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/* Number of followers */
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Fol_ShowNumberOfFollowingOrFollowers (UsrDat,
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NumFollowers,
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ActSeeFlr,Txt_Followers);
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/* I follow user? */
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fprintf (Gbl.F.Out,"<div id=\"follow_usr\">");
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if (Gbl.Usrs.Me.Logged && !ItsMe) // It's another logged user
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{
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if (IFollowUsr) // I follow this user
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{
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Act_FormStart (ActUnfUsr);
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Usr_PutParamUsrCodEncrypted (UsrDat->EncryptedUsrCod);
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Act_LinkFormSubmit (Txt_Following_unfollow,"REC_DAT_BOLD");
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fprintf (Gbl.F.Out,"<div class=\"ICON_HIGHLIGHT\""
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" style=\"display:inline;\" >"
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"<img src=\"%s/following64x64.png\""
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" alt=\"%s\" title=\"%s\""
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" class=\"ICON40x40\" />"
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"</div>"
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"</a>",
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Gbl.Prefs.IconsURL,
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Txt_Unfollow,Txt_Following_unfollow);
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Act_FormEnd ();
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}
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else // I do not follow this user
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{
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Act_FormStart (ActFolUsr);
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Usr_PutParamUsrCodEncrypted (UsrDat->EncryptedUsrCod);
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Act_LinkFormSubmit (Txt_Follow,"REC_DAT_BOLD");
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fprintf (Gbl.F.Out,"<div class=\"ICON_HIGHLIGHT\""
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" style=\"display:inline;\" >"
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"<img src=\"%s/follow64x64.png\""
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" alt=\"%s\" title=\"%s\""
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" class=\"ICON40x40\" />"
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"</div>"
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"</a>",
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Gbl.Prefs.IconsURL,
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Txt_Follow,Txt_Follow);
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Act_FormEnd ();
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}
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}
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fprintf (Gbl.F.Out,"</div>");
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/* End followers side */
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fprintf (Gbl.F.Out,"</div>"
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"</div>");
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/***** End section *****/
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fprintf (Gbl.F.Out,"</section>");
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}
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/*****************************************************************************/
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/**************** Show following and followers of a user *********************/
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/*****************************************************************************/
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static void Fol_ShowNumberOfFollowingOrFollowers (const struct UsrData *UsrDat,
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unsigned NumUsrs,
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Act_Action_t Action,
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const char *Title)
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{
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extern const char *The_ClassForm[The_NUM_THEMES];
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extern const char *The_ClassFormBold[The_NUM_THEMES];
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/***** Start container *****/
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fprintf (Gbl.F.Out,"<div class=\"FOLLOW_BOX\">");
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/***** Number *****/
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if (NumUsrs)
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{
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/* Form to list users */
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Act_FormStartAnchor (Action,"follow_section");
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Usr_PutParamUsrCodEncrypted (UsrDat->EncryptedUsrCod);
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Act_LinkFormSubmit (Title,
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(Gbl.Action.Act == Action) ? "FOLLOW_NUM_B" :
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"FOLLOW_NUM");
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}
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else
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fprintf (Gbl.F.Out,"<span class=\"%s\">",
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(Gbl.Action.Act == Action) ? "FOLLOW_NUM_B" :
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"FOLLOW_NUM");
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fprintf (Gbl.F.Out,"%u",NumUsrs);
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if (NumUsrs)
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{
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fprintf (Gbl.F.Out,"</a>");
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Act_FormEnd ();
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}
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else
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fprintf (Gbl.F.Out,"</span>");
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/***** Text *****/
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fprintf (Gbl.F.Out,"<div class=\"%s\">",
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(Gbl.Action.Act == Action) ? The_ClassFormBold[Gbl.Prefs.Theme] :
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The_ClassForm[Gbl.Prefs.Theme]);
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if (NumUsrs)
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{
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/* Form to list users */
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Act_FormStartAnchor (Action,"follow_section");
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Usr_PutParamUsrCodEncrypted (UsrDat->EncryptedUsrCod);
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Act_LinkFormSubmit (Title,
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(Gbl.Action.Act == Action) ? The_ClassFormBold[Gbl.Prefs.Theme] :
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The_ClassForm[Gbl.Prefs.Theme]);
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}
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fprintf (Gbl.F.Out,"%s",Title);
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if (NumUsrs)
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{
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fprintf (Gbl.F.Out,"</a>");
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Act_FormEnd ();
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}
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fprintf (Gbl.F.Out,"</div>");
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/***** End container *****/
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fprintf (Gbl.F.Out,"</div>");
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}
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/*****************************************************************************/
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/***************************** List followed users ***************************/
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/*****************************************************************************/
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void Fol_ListFollowing (void)
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{
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extern const char *Txt_User_not_found_or_you_do_not_have_permission_;
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char Query[256];
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MYSQL_RES *mysql_res;
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MYSQL_ROW row;
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unsigned NumUsrs;
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unsigned NumUsr;
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struct UsrData UsrDat;
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/***** Get user to view user he/she follows *****/
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if (Usr_GetParamOtherUsrCodEncryptedAndGetUsrData ())
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{
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/***** Show user's profile *****/
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if (Prf_ShowUserProfile ())
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{
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/***** Check if a user is a follower of another user *****/
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sprintf (Query,"SELECT FollowedCod FROM usr_follow"
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" WHERE FollowerCod='%ld' ORDER BY FollowTime DESC",
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Gbl.Usrs.Other.UsrDat.UsrCod);
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NumUsrs = (unsigned) DB_QuerySELECT (Query,&mysql_res,"can not get followed users");
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if (NumUsrs)
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{
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/***** Initialize structure with user's data *****/
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Usr_UsrDataConstructor (&UsrDat);
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/***** Start listing *****/
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fprintf (Gbl.F.Out,"<table class=\"CELLS_PAD_2\""
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" style=\"margin:12px auto;\">");
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for (NumUsr = 0;
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NumUsr < NumUsrs;
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NumUsr++)
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{
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/***** Get user *****/
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row = mysql_fetch_row (mysql_res);
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/* Get user's code (row[0]) */
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UsrDat.UsrCod = Str_ConvertStrCodToLongCod (row[0]);
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/***** Show user *****/
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if ((NumUsr % Fol_NUM_COLUMNS_FOLLOW) == 0)
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fprintf (Gbl.F.Out,"<tr>");
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if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&UsrDat))
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Fol_ShowFollowedOrFollower (&UsrDat);
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if ((NumUsr % Fol_NUM_COLUMNS_FOLLOW) == (Fol_NUM_COLUMNS_FOLLOW-1) ||
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NumUsr == NumUsrs - 1)
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fprintf (Gbl.F.Out,"</tr>");
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}
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/***** End listing *****/
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fprintf (Gbl.F.Out,"</table>");
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/***** Free memory used for user's data *****/
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Usr_UsrDataDestructor (&UsrDat);
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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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else
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Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
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}
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else
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Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
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}
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/*****************************************************************************/
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/******************************* List followers ******************************/
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/*****************************************************************************/
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void Fol_ListFollowers (void)
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{
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extern const char *Txt_User_not_found_or_you_do_not_have_permission_;
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char Query[256];
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MYSQL_RES *mysql_res;
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MYSQL_ROW row;
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unsigned NumUsrs;
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unsigned NumUsr;
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struct UsrData UsrDat;
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/***** Get user to view user he/she follows *****/
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Usr_GetParamOtherUsrCodEncrypted ();
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if (Gbl.Usrs.Other.UsrDat.UsrCod <= 0) // If user not specified, view my profile
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Gbl.Usrs.Other.UsrDat.UsrCod = Gbl.Usrs.Me.UsrDat.UsrCod;
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/***** Check if user exists and get his data *****/
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if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat))
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{
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/***** Show user's profile *****/
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if (Prf_ShowUserProfile ())
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{
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/***** Check if a user is a follower of another user *****/
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sprintf (Query,"SELECT FollowerCod FROM usr_follow"
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" WHERE FollowedCod='%ld' ORDER BY FollowTime DESC",
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Gbl.Usrs.Other.UsrDat.UsrCod);
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NumUsrs = (unsigned) DB_QuerySELECT (Query,&mysql_res,"can not get followers");
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if (NumUsrs)
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{
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/***** Initialize structure with user's data *****/
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Usr_UsrDataConstructor (&UsrDat);
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/***** Start listing *****/
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fprintf (Gbl.F.Out,"<table class=\"CELLS_PAD_2\""
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" style=\"margin:12px auto;\">");
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for (NumUsr = 0;
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NumUsr < NumUsrs;
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NumUsr++)
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{
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/***** Get user and number of clicks *****/
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row = mysql_fetch_row (mysql_res);
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/* Get user's code (row[0]) */
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UsrDat.UsrCod = Str_ConvertStrCodToLongCod (row[0]);
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/***** Show user *****/
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if ((NumUsr % Fol_NUM_COLUMNS_FOLLOW) == 0)
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fprintf (Gbl.F.Out,"<tr>");
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if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&UsrDat))
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Fol_ShowFollowedOrFollower (&UsrDat);
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if ((NumUsr % Fol_NUM_COLUMNS_FOLLOW) == (Fol_NUM_COLUMNS_FOLLOW-1) ||
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NumUsr == NumUsrs - 1)
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fprintf (Gbl.F.Out,"</tr>");
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}
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/***** End listing *****/
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fprintf (Gbl.F.Out,"</table>");
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/***** Free memory used for user's data *****/
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Usr_UsrDataDestructor (&UsrDat);
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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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/***** If it's me, mark possible notification as seen *****/
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if (Gbl.Usrs.Other.UsrDat.UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod)
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Ntf_MarkNotifAsSeen (Ntf_EVENT_FOLLOWER,-1L,
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Gbl.Usrs.Me.UsrDat.UsrCod);
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}
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else
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Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
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}
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else
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Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
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}
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/*****************************************************************************/
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/************************* Show followed or follower *************************/
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/*****************************************************************************/
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static void Fol_ShowFollowedOrFollower (const struct UsrData *UsrDat)
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{
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extern const char *Txt_View_public_profile;
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extern const char *Txt_Following_unfollow;
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extern const char *Txt_Unfollow;
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extern const char *Txt_Follow;
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bool ShowPhoto;
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char PhotoURL[PATH_MAX+1];
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bool Visible = Pri_ShowIsAllowed (UsrDat->ProfileVisibility,UsrDat->UsrCod);
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/***** Put form to follow / unfollow *****/
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fprintf (Gbl.F.Out,"<td class=\"RIGHT_MIDDLE\""
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" style=\"width:25px; height:62px;\">");
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if (Visible &&
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Gbl.Usrs.Me.Logged &&
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Gbl.Usrs.Me.UsrDat.UsrCod != UsrDat->UsrCod)
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{
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if (Fol_CheckUsrIsFollowerOf (Gbl.Usrs.Me.UsrDat.UsrCod,UsrDat->UsrCod)) // I follow user
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{
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Act_FormStart (ActUnfUsr);
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Usr_PutParamUsrCodEncrypted (UsrDat->EncryptedUsrCod);
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Act_LinkFormSubmit (Txt_Following_unfollow,NULL);
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fprintf (Gbl.F.Out,"<div class=\"ICON_HIGHLIGHT\">"
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"<img src=\"%s/following64x64.png\""
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" alt=\"%s\" title=\"%s\""
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" class=\"ICON20x20\" />"
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"</div>"
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"</a>",
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Gbl.Prefs.IconsURL,
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Txt_Unfollow,Txt_Following_unfollow);
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Act_FormEnd ();
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}
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else // I do not follow this user
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{
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Act_FormStart (ActFolUsr);
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Usr_PutParamUsrCodEncrypted (UsrDat->EncryptedUsrCod);
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Act_LinkFormSubmit (Txt_Follow,NULL);
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fprintf (Gbl.F.Out,"<div class=\"ICON_HIGHLIGHT\">"
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"<img src=\"%s/follow64x64.png\""
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" alt=\"%s\" title=\"%s\""
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" class=\"ICON20x20\" />"
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"</div>"
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"</a>",
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Gbl.Prefs.IconsURL,
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Txt_Follow,Txt_Follow);
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Act_FormEnd ();
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}
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}
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fprintf (Gbl.F.Out,"</td>");
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/***** Check if I can see the public profile *****/
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fprintf (Gbl.F.Out,"<td class=\"CENTER_MIDDLE\""
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" style=\"width:50px; height:62px;\">");
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if (Visible)
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{
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/***** User's photo *****/
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ShowPhoto = Pho_ShowUsrPhotoIsAllowed (UsrDat,PhotoURL);
|
|
Pho_ShowUsrPhoto (UsrDat,ShowPhoto ? PhotoURL :
|
|
NULL,
|
|
"PHOTO45x60",Pho_ZOOM,false);
|
|
}
|
|
fprintf (Gbl.F.Out,"</td>");
|
|
|
|
/***** Put form to go to public profile *****/
|
|
fprintf (Gbl.F.Out,"<td class=\"LEFT_MIDDLE\""
|
|
" style=\"min-width:87px; height:62px;\">");
|
|
if (Visible &&
|
|
UsrDat->Nickname[0])
|
|
{
|
|
Act_FormStart (ActSeePubPrf);
|
|
Usr_PutParamUsrCodEncrypted (UsrDat->EncryptedUsrCod);
|
|
Act_LinkFormSubmit (Txt_View_public_profile,"DAT");
|
|
Usr_RestrictLengthAndWriteName (UsrDat,8);
|
|
fprintf (Gbl.F.Out,"</a>");
|
|
Act_FormEnd ();
|
|
}
|
|
fprintf (Gbl.F.Out,"</td>");
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/***************************** Follow another user ***************************/
|
|
/*****************************************************************************/
|
|
|
|
void Fol_FollowUsr (void)
|
|
{
|
|
extern const char *Txt_User_not_found_or_you_do_not_have_permission_;
|
|
char Query[256];
|
|
bool CreateNotif;
|
|
bool NotifyByEmail;
|
|
bool Error;
|
|
|
|
/***** Get user to be followed *****/
|
|
if (Usr_GetParamOtherUsrCodEncryptedAndGetUsrData ())
|
|
{
|
|
// Follow only if I can view his/her public profile
|
|
if (Pri_ShowIsAllowed (Gbl.Usrs.Other.UsrDat.ProfileVisibility,Gbl.Usrs.Other.UsrDat.UsrCod))
|
|
// Follow only if I do not follow him/her
|
|
if (!Fol_CheckUsrIsFollowerOf (Gbl.Usrs.Me.UsrDat.UsrCod,
|
|
Gbl.Usrs.Other.UsrDat.UsrCod))
|
|
{
|
|
/***** Follow user in database *****/
|
|
sprintf (Query,"REPLACE INTO usr_follow"
|
|
" (FollowerCod,FollowedCod,FollowTime)"
|
|
" VALUES ('%ld','%ld',NOW())",
|
|
Gbl.Usrs.Me.UsrDat.UsrCod,
|
|
Gbl.Usrs.Other.UsrDat.UsrCod);
|
|
DB_QueryREPLACE (Query,"can not follow user");
|
|
|
|
/***** This follow must be notified by e-mail? *****/
|
|
CreateNotif = (Gbl.Usrs.Other.UsrDat.Prefs.NotifNtfEvents & (1 << Ntf_EVENT_FOLLOWER));
|
|
NotifyByEmail = CreateNotif &&
|
|
(Gbl.Usrs.Other.UsrDat.Prefs.EmailNtfEvents & (1 << Ntf_EVENT_FOLLOWER));
|
|
|
|
/***** Create notification for this followed.
|
|
If this followed wants to receive notifications by e-mail, activate the sending of a notification *****/
|
|
if (CreateNotif)
|
|
Ntf_StoreNotifyEventToOneUser (Ntf_EVENT_FOLLOWER,&Gbl.Usrs.Other.UsrDat,-1L,
|
|
(Ntf_Status_t) (NotifyByEmail ? Ntf_STATUS_BIT_EMAIL :
|
|
0));
|
|
}
|
|
|
|
/***** Show user's profile again *****/
|
|
Error = !Prf_ShowUserProfile ();
|
|
}
|
|
else
|
|
Error = true;
|
|
|
|
if (Error)
|
|
Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/***************************** Unfollow another user *************************/
|
|
/*****************************************************************************/
|
|
|
|
void Fol_UnfollowUsr (void)
|
|
{
|
|
extern const char *Txt_User_not_found_or_you_do_not_have_permission_;
|
|
char Query[256];
|
|
bool Error;
|
|
|
|
/***** Get user to be unfollowed *****/
|
|
if (Usr_GetParamOtherUsrCodEncryptedAndGetUsrData ())
|
|
{
|
|
// Unfollow only if I follow him/her
|
|
if (Fol_CheckUsrIsFollowerOf (Gbl.Usrs.Me.UsrDat.UsrCod,
|
|
Gbl.Usrs.Other.UsrDat.UsrCod))
|
|
{
|
|
/***** Follow user in database *****/
|
|
sprintf (Query,"DELETE FROM usr_follow"
|
|
" WHERE FollowerCod='%ld' AND FollowedCod='%ld'",
|
|
Gbl.Usrs.Me.UsrDat.UsrCod,
|
|
Gbl.Usrs.Other.UsrDat.UsrCod);
|
|
DB_QueryREPLACE (Query,"can not unfollow user");
|
|
}
|
|
|
|
/***** Show user's profile again *****/
|
|
Error = !Prf_ShowUserProfile ();
|
|
}
|
|
else
|
|
Error = true;
|
|
|
|
if (Error)
|
|
Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/****** Get and show ranking of users attending to number of followers *******/
|
|
/*****************************************************************************/
|
|
|
|
void Fol_GetAndShowRankingFollowers (void)
|
|
{
|
|
char Query[512];
|
|
|
|
/***** Get ranking from database *****/
|
|
switch (Gbl.Scope.Current)
|
|
{
|
|
case Sco_SCOPE_SYS:
|
|
sprintf (Query,"SELECT FollowedCod,COUNT(FollowerCod) AS N"
|
|
" FROM usr_follow"
|
|
" GROUP BY FollowedCod"
|
|
" ORDER BY N DESC,FollowedCod LIMIT 100");
|
|
break;
|
|
case Sco_SCOPE_CTY:
|
|
sprintf (Query,"SELECT DISTINCTROW usr_follow.FollowedCod,COUNT(usr_follow.FollowerCod) AS N"
|
|
" FROM institutions,centres,degrees,courses,crs_usr,usr_follow"
|
|
" WHERE institutions.CtyCod='%ld'"
|
|
" AND institutions.InsCod=centres.InsCod"
|
|
" AND centres.CtrCod=degrees.CtrCod"
|
|
" AND degrees.DegCod=courses.DegCod"
|
|
" AND courses.CrsCod=crs_usr.CrsCod"
|
|
" AND crs_usr.UsrCod=usr_follow.FollowedCod"
|
|
" GROUP BY usr_follow.FollowedCod"
|
|
" ORDER BY N DESC,usr_follow.FollowedCod LIMIT 100",
|
|
Gbl.CurrentCty.Cty.CtyCod);
|
|
break;
|
|
case Sco_SCOPE_INS:
|
|
sprintf (Query,"SELECT DISTINCTROW usr_follow.FollowedCod,COUNT(usr_follow.FollowerCod) AS N"
|
|
" FROM centres,degrees,courses,crs_usr,usr_follow"
|
|
" WHERE centres.InsCod='%ld'"
|
|
" AND centres.CtrCod=degrees.CtrCod"
|
|
" AND degrees.DegCod=courses.DegCod"
|
|
" AND courses.CrsCod=crs_usr.CrsCod"
|
|
" AND crs_usr.UsrCod=usr_follow.FollowedCod"
|
|
" GROUP BY usr_follow.FollowedCod"
|
|
" ORDER BY N DESC,usr_follow.FollowedCod LIMIT 100",
|
|
Gbl.CurrentIns.Ins.InsCod);
|
|
break;
|
|
case Sco_SCOPE_CTR:
|
|
sprintf (Query,"SELECT DISTINCTROW usr_follow.FollowedCod,COUNT(usr_follow.FollowerCod) AS N"
|
|
" FROM degrees,courses,crs_usr,usr_follow"
|
|
" WHERE degrees.CtrCod='%ld'"
|
|
" AND degrees.DegCod=courses.DegCod"
|
|
" AND courses.CrsCod=crs_usr.CrsCod"
|
|
" AND crs_usr.UsrCod=usr_follow.FollowedCod"
|
|
" GROUP BY usr_follow.FollowedCod"
|
|
" ORDER BY N DESC,usr_follow.FollowedCod LIMIT 100",
|
|
Gbl.CurrentCtr.Ctr.CtrCod);
|
|
break;
|
|
case Sco_SCOPE_DEG:
|
|
sprintf (Query,"SELECT DISTINCTROW usr_follow.FollowedCod,COUNT(usr_follow.FollowerCod) AS N"
|
|
" FROM courses,crs_usr,usr_follow"
|
|
" WHERE courses.DegCod='%ld'"
|
|
" AND courses.CrsCod=crs_usr.CrsCod"
|
|
" AND crs_usr.UsrCod=usr_follow.FollowedCod"
|
|
" GROUP BY usr_follow.FollowedCod"
|
|
" ORDER BY N DESC,usr_follow.FollowedCod LIMIT 100",
|
|
Gbl.CurrentDeg.Deg.DegCod);
|
|
break;
|
|
case Sco_SCOPE_CRS:
|
|
sprintf (Query,"SELECT DISTINCTROW usr_follow.FollowedCod,COUNT(usr_follow.FollowerCod) AS N"
|
|
" FROM crs_usr,usr_follow"
|
|
" WHERE crs_usr.CrsCod='%ld'"
|
|
" AND crs_usr.UsrCod=usr_follow.FollowedCod"
|
|
" GROUP BY usr_follow.FollowedCod"
|
|
" ORDER BY N DESC,usr_follow.FollowedCod LIMIT 100",
|
|
Gbl.CurrentCrs.Crs.CrsCod);
|
|
break;
|
|
default:
|
|
Lay_ShowErrorAndExit ("Wrong scope.");
|
|
break;
|
|
}
|
|
Prf_ShowRankingFigure (Query);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/********************* Get notification of a new follower ********************/
|
|
/*****************************************************************************/
|
|
// This function may be called inside a web service, so don't report error
|
|
|
|
void Fol_GetNotifFollower (char *SummaryStr,char **ContentStr)
|
|
{
|
|
SummaryStr[0] = '\0';
|
|
|
|
if ((*ContentStr = (char *) malloc (1)))
|
|
strcpy (*ContentStr,"");
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/*********************** Remove user from user follow ************************/
|
|
/*****************************************************************************/
|
|
|
|
void Fol_RemoveUsrFromUsrFollow (long UsrCod)
|
|
{
|
|
char Query[128];
|
|
|
|
sprintf (Query,"DELETE FROM usr_follow"
|
|
" WHERE FollowerCod='%ld' OR FollowedCod='%ld'",
|
|
UsrCod,UsrCod);
|
|
DB_QueryDELETE (Query,"can not remove user from followers and followed");
|
|
}
|