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swad-core/swad_timeline.c

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// swad_timeline.c: social timeline
/*
SWAD (Shared Workspace At a Distance),
is a web platform developed at the University of Granada (Spain),
and used to support university teaching.
This file is part of SWAD core.
Copyright (C) 1999-2021 Antonio Cañas Vargas
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General 3 License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
mysql> SHOW TABLES LIKE 'tl_%';
+-----------------------+
| Tables_in_swad (tl_%) |
+-----------------------+
| tl_comments |
| tl_comments_fav |
| tl_notes |
| tl_notes_fav |
| tl_posts |
| tl_pubs |
| tl_timelines |
+-----------------------+
7 rows in set (0.00 sec)
The timeline is a set of publications.
A publication can be:
· an original note (22783, 83% of 27396)
· a shared note ( 750, 3% of 27396)
· a comment to a note ( 3863, 14% of 27396)
*Numbers are got from swad.ugr.es on february 2020
____tl_pubs____ _tl_comments_
| | | |
| Publication p |---------->| Comment c |-----+
| (comment) | | (to note 2) | |
|_______________| |_____________| |
| | | | |
· ... · · ... · |
· ... · · ... · |
|_______________| |_____________| |
| | | | |
|Publication i+4|---------->| Comment 1 |---+ |
| (comment) | | (to note n) | | |
|_______________| |_____________| | |
| | (3863) | |
|Publication i+3|-- | |
|(original note)| \ | |
|_______________| \ ___tl_notes____ | | exam_announcements
| | \ | | | | | |
|Publication i+2|-- ---->| Note n |<-+ | | Exam announc. | (5571)
|(original note)| \ |(exam announc.)|-(2639)->|_______________|
|_______________| \ |_______________| 12% ____files____
| | \ | | | | |
|Publication i+1|-- ---->| Note n-1 |-(64)--->| Public file | (1473406)
|(original note)| \ | (public file) | <1% |_____________|
|_______________| \ |_______________| | _notices_
| | \ | | | | |
| Publication i |-- ---->| Note n-2 |-(16693)>| Notice | (14793)
|(original note)| \ | (notice) | 73% |_________|
|_______________| \ |_______________| | __tl_posts___
| | \ | | | | |
· ... · ---->| Note n-3 |-(3119)->| Post s |
· ... · | (tl. post) | 14% | |
|_______________| |_______________| | |_____________|
| | | | | | |
| Publication 3 | · ... · | · ... · (3119)
| (shared note) |--- · ... · | · ... ·
|_______________| \ |_______________| | |_____________|
| | \ | | | | |
| Publication 2 | ---->| Note 2 |<---+ | Post 1 |
|(original note)|--------->| (tl. post) |-------->| |
|_______________| |_______________| |_____________|
| | | | _forum_post_
| Publication 1 |--------->| Note 1 | | |
|(original note)| | (forum post) |-(268)-->| Forum post | (66226)
|_______________| |_______________| 1% |____________|
(27396) (22783)
A note can be:
· a timeline post ( 3119, 14% of 22783)
· a public file ( 64, <1% of 22783)
· an exam announcement ( 2639, 12% of 22783)
· a notice (16693, 73% of 22783)
· a forum post ( 268, 1% of 22783)
written by an author in a date-time.
A note can have comments attached to it.
__________________
|@author |
| Note |
|__________________|
|@author |
| Comment 1 |
|______________|
|@author |
| Comment 2 |
|______________|
| |
| ... |
|______________|
|@author |
| Comment n |
|______________|
*/
/*****************************************************************************/
/*********************************** Headers *********************************/
/*****************************************************************************/
#define _GNU_SOURCE // For asprintf
#include <linux/limits.h> // For PATH_MAX
#include <stdio.h> // For asprintf
#include "swad_figure.h"
#include "swad_global.h"
#include "swad_message.h"
#include "swad_notification.h"
#include "swad_photo.h"
#include "swad_profile.h"
#include "swad_timeline.h"
#include "swad_timeline_database.h"
#include "swad_timeline_note.h"
#include "swad_timeline_notification.h"
#include "swad_timeline_publication.h"
#include "swad_timeline_who.h"
/*****************************************************************************/
/****************************** Public constants *****************************/
/*****************************************************************************/
/*****************************************************************************/
/************************* Private constants and types ***********************/
/*****************************************************************************/
/*****************************************************************************/
/************** External global variables from others modules ****************/
/*****************************************************************************/
extern struct Globals Gbl;
/*****************************************************************************/
/************************* Private global variables **************************/
/*****************************************************************************/
/*****************************************************************************/
/***************************** Private prototypes ****************************/
/*****************************************************************************/
static void Tml_GetAndShowOldTimeline (struct Tml_Timeline *Timeline);
static void Tml_ShowTimeline (struct Tml_Timeline *Timeline,
long NotCodToHighlight,const char *Title);
static void Tml_PutIconsTimeline (__attribute__((unused)) void *Args);
static unsigned Tml_ListRecentPubs (struct Tml_Timeline *Timeline,
long NotCodToHighlight);
static void Tml_PutHiddenList (const char *Id);
/*****************************************************************************/
/************************ Initialize global timeline *************************/
/*****************************************************************************/
void Tml_InitTimelineGbl (struct Tml_Timeline *Timeline)
{
/***** Reset timeline context *****/
Tml_ResetTimeline (Timeline);
/***** Mark all my notifications about timeline as seen *****/
Tml_Ntf_MarkMyNotifAsSeen ();
/***** Get which users *****/
Timeline->Who = Tml_Who_GetGlobalWho ();
}
/*****************************************************************************/
/*************************** Reset timeline context **************************/
/*****************************************************************************/
void Tml_ResetTimeline (struct Tml_Timeline *Timeline)
{
Timeline->UsrOrGbl = Tml_Usr_TIMELINE_GBL;
Timeline->Who = Tml_Who_DEFAULT_WHO;
Timeline->WhatToGet = Tml_GET_RECENT_TIMELINE;
Timeline->Pubs.Top =
Timeline->Pubs.Bottom = NULL,
Timeline->NotCod = -1L;
Timeline->PubCod = -1L;
}
/*****************************************************************************/
/**************** Show highlighted note and global timeline ******************/
/*****************************************************************************/
void Tml_ShowTimelineGbl (void)
{
struct Tml_Timeline Timeline;
/***** Initialize timeline *****/
Tml_InitTimelineGbl (&Timeline);
/***** Save which users in database *****/
Tml_Who_SaveWhoInDB (&Timeline);
/***** Show highlighted note and global timeline *****/
Tml_ShowNoteAndTimelineGbl (&Timeline);
}
/*****************************************************************************/
/**************** Show highlighted note and global timeline ******************/
/*****************************************************************************/
void Tml_ShowNoteAndTimelineGbl (struct Tml_Timeline *Timeline)
{
long PubCod;
struct Tml_Not_Note Not;
/***** Initialize note code to -1 ==> no highlighted note *****/
Not.NotCod = -1L;
/***** Get parameter with the code of a publication *****/
// This parameter is optional. It can be provided by a notification.
// If > 0 ==> the note is shown highlighted above the timeline
PubCod = Tml_Pub_GetParamPubCod ();
/***** If a note should be highlighted ==> get code of note from database *****/
if (PubCod > 0)
Not.NotCod = Tml_DB_GetNotCodFromPubCod (PubCod);
/***** If a note should be highlighted ==> show it above the timeline *****/
if (Not.NotCod > 0)
Tml_Not_ShowHighlightedNote (Timeline,&Not);
/***** Show timeline with possible highlighted note *****/
Tml_ShowTimelineGblHighlighting (Timeline,Not.NotCod);
}
/*****************************************************************************/
/******************* Show global timeline highlighting a note ****************/
/*****************************************************************************/
void Tml_ShowTimelineGblHighlighting (struct Tml_Timeline *Timeline,long NotCod)
{
extern const char *Txt_Timeline;
/***** Get list of pubications to show in timeline *****/
Timeline->UsrOrGbl = Tml_Usr_TIMELINE_GBL;
Timeline->WhatToGet = Tml_GET_RECENT_TIMELINE;
Tml_Pub_GetListPubsToShowInTimeline (Timeline);
/***** Show timeline *****/
Tml_ShowTimeline (Timeline,NotCod,Txt_Timeline);
/***** Free chained list of publications *****/
Tml_Pub_FreeListPubs (Timeline);
}
/*****************************************************************************/
/********************* Show timeline of a selected user **********************/
/*****************************************************************************/
void Tml_ShowTimelineUsr (struct Tml_Timeline *Timeline)
{
Tml_ShowTimelineUsrHighlighting (Timeline,-1L);
}
/*****************************************************************************/
/************ Show timeline of a selected user highlighting a note ***********/
/*****************************************************************************/
void Tml_ShowTimelineUsrHighlighting (struct Tml_Timeline *Timeline,long NotCod)
{
extern const char *Txt_Timeline_OF_A_USER;
/***** Get list of pubications to show in timeline *****/
Timeline->UsrOrGbl = Tml_Usr_TIMELINE_USR;
Timeline->WhatToGet = Tml_GET_RECENT_TIMELINE;
Tml_Pub_GetListPubsToShowInTimeline (Timeline);
/***** Show timeline *****/
Tml_ShowTimeline (Timeline,NotCod,
Str_BuildStringStr (Txt_Timeline_OF_A_USER,
Gbl.Usrs.Other.UsrDat.FrstName));
Str_FreeString ();
/***** Free chained list of publications *****/
Tml_Pub_FreeListPubs (Timeline);
}
/*****************************************************************************/
/************** Refresh new publications in timeline via AJAX ****************/
/*****************************************************************************/
void Tml_RefreshNewTimelineGbl (void)
{
struct Tml_Timeline Timeline;
if (Gbl.Session.IsOpen) // If session has been closed, do not write anything
{
/***** Reset timeline context *****/
Tml_ResetTimeline (&Timeline);
/***** Get which users *****/
Timeline.Who = Tml_Who_GetGlobalWho ();
/***** Get list of pubications to show in timeline *****/
Timeline.UsrOrGbl = Tml_Usr_TIMELINE_GBL;
Timeline.WhatToGet = Tml_GET_ONLY_NEW_PUBS;
Tml_Pub_GetListPubsToShowInTimeline (&Timeline);
/***** Show new timeline *****/
Tml_Pub_InsertNewPubsInTimeline (&Timeline);
/***** Free chained list of publications *****/
Tml_Pub_FreeListPubs (&Timeline);
}
}
/*****************************************************************************/
/**************** View old publications in timeline via AJAX *****************/
/*****************************************************************************/
void Tml_RefreshOldTimelineGbl (void)
{
struct Tml_Timeline Timeline;
/***** Reset timeline context *****/
Tml_ResetTimeline (&Timeline);
/***** Get which users *****/
Timeline.Who = Tml_Who_GetGlobalWho ();
/***** Show old publications *****/
Timeline.UsrOrGbl = Tml_Usr_TIMELINE_GBL;
Timeline.WhatToGet = Tml_GET_ONLY_OLD_PUBS;
Tml_GetAndShowOldTimeline (&Timeline);
}
void Tml_RefreshOldTimelineUsr (void)
{
struct Tml_Timeline Timeline;
/***** Get user whom profile is displayed *****/
if (Usr_GetParamOtherUsrCodEncryptedAndGetUsrData ()) // Existing user
{
/***** Reset timeline context *****/
Tml_ResetTimeline (&Timeline);
/***** If user exists, show old publications *****/
Timeline.UsrOrGbl = Tml_Usr_TIMELINE_USR;
Timeline.WhatToGet = Tml_GET_ONLY_OLD_PUBS;
Tml_GetAndShowOldTimeline (&Timeline);
}
}
/*****************************************************************************/
/**************** Get and show old publications in timeline ******************/
/*****************************************************************************/
static void Tml_GetAndShowOldTimeline (struct Tml_Timeline *Timeline)
{
/***** Get list of pubications to show in timeline *****/
Tml_Pub_GetListPubsToShowInTimeline (Timeline);
/***** Show old timeline *****/
Tml_Pub_ShowOldPubsInTimeline (Timeline);
/***** Free chained list of publications *****/
Tml_Pub_FreeListPubs (Timeline);
}
/*****************************************************************************/
/******************************* Show timeline *******************************/
/*****************************************************************************/
/* _____
/ |_____| just_now_timeline_list (Posts retrieved automatically
| |_____| via AJAX from time to time.
| |_____| They are transferred inmediately
| | to new_timeline_list.)
Hidden < __v__
| |_____| new_timeline_list (Posts retrieved but hidden.
| |_____| When user clicks to view them,
| |_____| they are transferred
\ |_____| to visible timeline_list.)
|
__v__
/ |_____| timeline_list (Posts visible on page)
| |_____|
Visible | |_____|
on < |_____|
page | |_____|
| |_____|
\ |_____|
^
__|__
/ |_____| old_timeline_list (Posts just retrieved via AJAX
| |_____| when user clicks "see more".
| |_____| They are transferred inmediately
Hidden < |_____| to timeline_list.)
| |_____|
| |_____|
\ |_____|
*/
static void Tml_ShowTimeline (struct Tml_Timeline *Timeline,
long NotCodToHighlight,const char *Title)
{
extern const char *Hlp_START_Timeline;
bool GlobalTimeline = (Gbl.Usrs.Other.UsrDat.UsrCod <= 0);
unsigned NumNotesShown;
/***** Begin box *****/
Box_BoxBegin (NULL,Title,
Tml_PutIconsTimeline,NULL,
Hlp_START_Timeline,Box_NOT_CLOSABLE);
/***** Put form to select users whom public activity is displayed *****/
if (GlobalTimeline)
Tml_Who_PutFormWho (Timeline);
/***** Form to write a new post *****/
if (GlobalTimeline || Usr_ItsMe (Gbl.Usrs.Other.UsrDat.UsrCod))
Tml_Pst_PutPhotoAndFormToWriteNewPost (Timeline);
/***** New publications refreshed dynamically via AJAX *****/
if (GlobalTimeline)
{
/* Link to view new publications via AJAX */
Tml_Pub_PutLinkToViewNewPubs ();
/* Hidden lists to insert publications received via AJAX:
1. just received (not visible) publications
2. new (not visible) publications */
Tml_PutHiddenList ("just_now_timeline_list");
Tml_PutHiddenList ("new_timeline_list");
}
/***** List recent publications in timeline *****/
NumNotesShown = Tml_ListRecentPubs (Timeline,NotCodToHighlight);
/***** If the number of publications shown is the maximum,
probably there will be more, so show link to get more *****/
if (NumNotesShown == Tml_Pub_MAX_REC_PUBS_TO_GET_AND_SHOW)
{
/* Link to view old publications via AJAX */
Tml_Pub_PutLinkToViewOldPubs ();
/* Hidden list to insert old publications via AJAX */
Tml_PutHiddenList ("old_timeline_list");
}
/***** End box *****/
Box_BoxEnd ();
}
/*****************************************************************************/
/********************* Put contextual icons in timeline **********************/
/*****************************************************************************/
static void Tml_PutIconsTimeline (__attribute__((unused)) void *Args)
{
/***** Put icon to show a figure *****/
Fig_PutIconToShowFigure (Fig_TIMELINE);
}
/*****************************************************************************/
/******************* List recent publications in timeline ********************/
/*****************************************************************************/
// Returns number of notes shown
static unsigned Tml_ListRecentPubs (struct Tml_Timeline *Timeline,
long NotCodToHighlight)
{
unsigned NumNotesShown;
struct Tml_Pub_Publication *Pub;
struct Tml_Not_Note Not;
/***** Begin list *****/
HTM_UL_Begin ("id=\"timeline_list\" class=\"TL_LIST\"");
/***** For each publication in list... *****/
for (Pub = Timeline->Pubs.Top, NumNotesShown = 0;
Pub;
Pub = Pub->Next, NumNotesShown++)
{
/* Get data of note */
Not.NotCod = Pub->NotCod;
Tml_Not_GetDataOfNoteByCod (&Not);
/* Write list item (note) */
HTM_LI_Begin ("class=\"%s\"",
Not.NotCod == NotCodToHighlight ? "TL_WIDTH TL_SEP TL_NEW_PUB" :
"TL_WIDTH TL_SEP");
Tml_Not_CheckAndWriteNoteWithTopMsg (Timeline,&Not,
Tml_Pub_GetTopMessage (Pub->PubType),
Pub->PublisherCod);
HTM_LI_End ();
}
/***** End list *****/
HTM_UL_End ();
return NumNotesShown;
}
/*****************************************************************************/
/*********** Put a hidden list where publications will be inserted ***********/
/*****************************************************************************/
static void Tml_PutHiddenList (const char *Id)
{
HTM_UL_Begin ("id=\"%s\" class=\"TL_LIST\"",Id);
HTM_UL_End ();
}
/*****************************************************************************/
/******************* Write the date of creation of a note ********************/
/*****************************************************************************/
// TimeUTC holds UTC date and time in UNIX format (seconds since 1970)
void Tml_WriteDateTime (time_t TimeUTC)
{
char IdDateTime[Frm_MAX_BYTES_ID + 1];
/***** Create unique Id *****/
Frm_SetUniqueId (IdDateTime);
/***** Container where the date-time is written *****/
HTM_DIV_Begin ("id=\"%s\" class=\"TL_RIGHT_TIME DAT_LIGHT\"",IdDateTime);
HTM_DIV_End ();
/***** Script to write date and time in browser local time *****/
// This must be out of the div where the output is written
// because it will be evaluated in a loop in JavaScript
Dat_WriteLocalDateHMSFromUTC (IdDateTime,TimeUTC,
Gbl.Prefs.DateFormat,Dat_SEPARATOR_COMMA,
true,true,false,0x6);
}
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