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swad-core/swad_timeline_post.c

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// swad_timeline_post.c: social timeline posts
/*
SWAD (Shared Workspace At a Distance),
is a web platform developed at the University of Granada (Spain),
and used to support university teaching.
This file is part of SWAD core.
Copyright (C) 1999-2024 Antonio Cañas Vargas
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General 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/>.
*/
/*****************************************************************************/
/*********************************** Headers *********************************/
/*****************************************************************************/
#define _GNU_SOURCE // For asprintf
#include <stdio.h> // For asprintf
#include <stdlib.h> // For free
#include "swad_alert.h"
#include "swad_database.h"
#include "swad_error.h"
#include "swad_global.h"
#include "swad_info.h"
#include "swad_media.h"
#include "swad_message.h"
#include "swad_parameter.h"
#include "swad_profile.h"
#include "swad_timeline.h"
#include "swad_timeline_database.h"
#include "swad_timeline_form.h"
#include "swad_timeline_note.h"
#include "swad_timeline_post.h"
#include "swad_timeline_publication.h"
/*****************************************************************************/
/************************* Private constants and types ***********************/
/*****************************************************************************/
#define TmlPst_MAX_CHARS_IN_POST 1000 // Maximum number of characters in a post
/*****************************************************************************/
/************** External global variables from others modules ****************/
/*****************************************************************************/
extern struct Globals Gbl;
/*****************************************************************************/
/***************************** Private prototypes ****************************/
/*****************************************************************************/
static void TmlPst_GetPostContent (long PstCod,struct TmlPst_Content *Content);
static void TmlPst_ShowPostContent (struct TmlPst_Content *Content);
static void TmlPst_PutFormToWriteNewPost (struct Tml_Timeline *Timeline);
static long TmlPst_ReceivePost (void);
/*****************************************************************************/
/***************** Get from database and write public post *******************/
/*****************************************************************************/
void TmlPst_GetAndWritePost (long PstCod)
{
struct TmlPst_Content Content;
/***** Initialize media *****/
Med_MediaConstructor (&Content.Media);
/***** Get post content from database *****/
TmlPst_GetPostContent (PstCod,&Content);
/***** Show post content *****/
TmlPst_ShowPostContent (&Content);
/***** Free media *****/
Med_MediaDestructor (&Content.Media);
}
/*****************************************************************************/
/****************************** Get post content *****************************/
/*****************************************************************************/
// Media must be initialized before calling this function
static void TmlPst_GetPostContent (long PstCod,struct TmlPst_Content *Content)
{
MYSQL_RES *mysql_res;
MYSQL_ROW row;
/***** Get post from database *****/
if (Tml_DB_GetPostByCod (PstCod,&mysql_res) == 1)
{
/* Get row */
row = mysql_fetch_row (mysql_res);
/*
row[0] Txt
row[1] MedCod
*/
/* Get content (row[0]) */
Str_Copy (Content->Txt,row[0],sizeof (Content->Txt) - 1);
/* Get media (row[1]) */
Content->Media.MedCod = Str_ConvertStrCodToLongCod (row[1]);
Med_GetMediaDataByCod (&Content->Media);
}
else
{
Content->Txt[0] = '\0';
Med_ResetMedia (&Content->Media);
}
/***** Free structure that stores the query result *****/
DB_FreeMySQLResult (&mysql_res);
}
/*****************************************************************************/
/****************************** Get post content *****************************/
/*****************************************************************************/
static void TmlPst_ShowPostContent (struct TmlPst_Content *Content)
{
/***** Trivial check *****/
if (Content == NULL)
Err_ShowErrorAndExit ("Wrong content.");
/***** Write content text *****/
if (Content->Txt[0])
{
HTM_DIV_Begin ("class=\"Tml_TXT Tml_TXT_%s\"",The_GetSuffix ());
Msg_WriteMsgContent (Content->Txt,true,false);
HTM_DIV_End ();
}
/***** Show media *****/
Med_ShowMedia (&Content->Media,"Tml_PST_MED_CONT Tml_RIGHT_WIDTH",
"Tml_PST_MED Tml_RIGHT_WIDTH");
}
/*****************************************************************************/
/********************** Form to write a new publication **********************/
/*****************************************************************************/
void TmlPst_PutPhotoAndFormToWriteNewPost (struct Tml_Timeline *Timeline)
{
/***** Begin list *****/
HTM_UL_Begin ("class=\"Tml_LIST\"");
/***** Begin list item *****/
HTM_LI_Begin ("class=\"Tml_WIDTH\"");
/***** Left: write author's photo (my photo) *****/
TmlNot_ShowAuthorPhoto (&Gbl.Usrs.Me.UsrDat);
/***** Right: author's name, time, textarea *****/
TmlPst_PutFormToWriteNewPost (Timeline);
/***** End list item *****/
HTM_LI_End ();
/***** End list *****/
HTM_UL_End ();
}
/*****************************************************************************/
/**************** Author's name, time, and form with textarea ****************/
/*****************************************************************************/
static void TmlPst_PutFormToWriteNewPost (struct Tml_Timeline *Timeline)
{
extern const char *Txt_New_TIMELINE_post;
char *Class;
/***** Begin container *****/
HTM_DIV_Begin ("class=\"Tml_RIGHT_CONT Tml_RIGHT_WIDTH\"");
/***** Author name *****/
if (asprintf (&Class,"Tml_RIGHT_AUTHOR Tml_RIGHT_AUTHOR_WIDTH BT_LINK DAT_STRONG_%s BOLD",
The_GetSuffix ()) < 0)
Err_NotEnoughMemoryExit ();
TmlNot_WriteAuthorName (&Gbl.Usrs.Me.UsrDat,Class);
free (Class);
/***** Form to write the post *****/
/* Begin container */
HTM_DIV_Begin ("class=\"Tml_FORM_NEW_PST Tml_RIGHT_WIDTH\"");
/* Form with textarea */
TmlFrm_BeginForm (Timeline,TmlFrm_RECEIVE_POST);
if (asprintf (&Class,"Tml_COM_TEXTAREA Tml_RIGHT_WIDTH INPUT_%s",
The_GetSuffix ()) < 0)
Err_NotEnoughMemoryExit ();
TmlPst_PutTextarea (Txt_New_TIMELINE_post,Class);
free (Class);
TmlFrm_EndForm ();
/* End container */
HTM_DIV_End ();
/***** End container *****/
HTM_DIV_End ();
}
/*****************************************************************************/
/*** Put textarea and button inside a form to submit a new post or comment ***/
/*****************************************************************************/
void TmlPst_PutTextarea (const char *Placeholder,const char *ClassTextArea)
{
extern const char *Txt_Post;
char IdDivImgButton[Frm_MAX_BYTES_ID + 1];
char *ClassInput;
/***** Set unique id for the hidden div *****/
Frm_SetUniqueId (IdDivImgButton);
/***** Textarea to write the content *****/
HTM_TEXTAREA_Begin ("name=\"Txt\" rows=\"1\" maxlength=\"%u\""
" placeholder=\"%s&hellip;\" class=\"%s\""
" onfocus=\"expandTextarea(this,'%s','6');\"",
TmlPst_MAX_CHARS_IN_POST,
Placeholder,ClassTextArea,
IdDivImgButton);
HTM_TEXTAREA_End ();
/***** Begin hidden div *****/
HTM_DIV_Begin ("id=\"%s\" style=\"display:none;\"",IdDivImgButton);
/***** Help on editor *****/
Lay_HelpPlainEditor ();
/***** Attached image (optional) *****/
if (asprintf (&ClassInput,"Tml_MED_INPUT_WIDTH INPUT_%s",
The_GetSuffix ()) < 0)
Err_NotEnoughMemoryExit ();
Med_PutMediaUploader (-1,ClassInput);
free (ClassInput);
/***** Submit button *****/
HTM_BUTTON_Submit_Begin (NULL,"class=\"BT_SUBMIT_INLINE BT_CREATE\"");
HTM_Txt (Txt_Post);
HTM_BUTTON_End ();
/***** End hidden div *****/
HTM_DIV_End ();
}
/*****************************************************************************/
/******************* Receive and store a new public post *********************/
/*****************************************************************************/
void TmlPst_ReceivePostUsr (void)
{
struct Tml_Timeline Timeline;
long NotCod;
/***** Reset timeline context *****/
Tml_ResetTimeline (&Timeline);
/***** Get user whom profile is displayed *****/
Usr_GetParOtherUsrCodEncryptedAndGetUsrData ();
/***** Show user's profile *****/
Prf_ShowUsrProfile (&Gbl.Usrs.Other.UsrDat);
/***** Begin section *****/
HTM_SECTION_Begin (Tml_TIMELINE_SECTION_ID);
/***** Receive and store post, and
write updated timeline after publication (user) *****/
NotCod = TmlPst_ReceivePost ();
Tml_ShowTimelineUsrHighlighting (&Timeline,NotCod);
/***** End section *****/
HTM_SECTION_End ();
}
void TmlPst_ReceivePostGbl (void)
{
struct Tml_Timeline Timeline;
long NotCod;
/***** Initialize timeline *****/
Tml_InitTimelineGbl (&Timeline);
/***** Receive and store post *****/
NotCod = TmlPst_ReceivePost ();
/***** Write updated timeline after publication (global) *****/
Tml_ShowTimelineGblHighlighting (&Timeline,NotCod);
}
// Returns the code of the note just created
static long TmlPst_ReceivePost (void)
{
struct TmlPst_Content Content;
long PstCod;
struct TmlPub_Publication Pub;
/***** Get the content of the new post *****/
Par_GetParAndChangeFormat ("Txt",Content.Txt,Cns_MAX_BYTES_LONG_TEXT,
Str_TO_RIGOROUS_HTML,Str_REMOVE_SPACES);
/***** Initialize image *****/
Med_MediaConstructor (&Content.Media);
/***** Get attached image (action, file and title) *****/
Content.Media.Width = Tml_IMAGE_SAVED_MAX_WIDTH;
Content.Media.Height = Tml_IMAGE_SAVED_MAX_HEIGHT;
Content.Media.Quality = Tml_IMAGE_SAVED_QUALITY;
Med_GetMediaFromForm (-1L,-1L,-1,&Content.Media,NULL,NULL);
Ale_ShowAlerts (NULL);
if (Content.Txt[0] || // Text not empty
Content.Media.Status == Med_PROCESSED) // A media is attached
{
/***** Store media in filesystem and database *****/
Med_RemoveKeepOrStoreMedia (-1L,&Content.Media);
/***** Publish *****/
/* Insert post content in the database */
PstCod = Tml_DB_CreateNewPost (&Content);
/* Insert post in notes */
TmlNot_StoreAndPublishNoteInternal (TmlNot_POST,PstCod,&Pub);
/***** Analyze content and store notifications about mentions *****/
Str_AnalyzeTxtAndStoreNotifyEventToMentionedUsrs (Pub.PubCod,Content.Txt);
}
else // Text and image are empty
Pub.NotCod = -1L;
/***** Free image *****/
Med_MediaDestructor (&Content.Media);
return Pub.NotCod;
}
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