# The LearningOnline Network
# Announce
#
# $Id: lonannounce.pm,v 1.4 2002/08/09 20:15:16 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
package Apache::lonannounce;
use strict;
use Apache::Constants qw(:common);
use Apache::loncommon;
sub readcalendar {
my $courseid=shift;
my $coursenum=$ENV{'course.'.$courseid.'.num'};
my $coursedom=$ENV{'course.'.$courseid.'.domain'};
my %thiscal=&Apache::lonnet::dump('calendar',$coursedom,$coursenum);
my %returnhash=();
foreach (keys %thiscal) {
unless (($_=~/^error\:/) || ($thiscal{$_}=~/^error\:/)) {
$returnhash{$courseid.'@'.$_}=$thiscal{$_};
}
}
return %returnhash;
}
sub emptycell {
return '
';
}
sub normalcell {
my ($day,$text)=@_;
my $output='';
foreach (split(/\_\_\_\&\&\&\_\_\_/,$text)) {
if ($_) {
my ($courseid,$msg)=split(/\@/,$_);
my $fullmsg=$ENV{'course.'.$courseid.'.description'}.': '.$msg;
$output.=''.
substr($msg,0,20).'... ';
}
}
return '
'.$day.' '.$output.'
';
}
sub nextday {
my %th=@_;
$th{'day'}++;
return (&Apache::loncommon::maketime(%th),$th{'month'});
}
sub showday {
my ($tk,%allcal)=@_;
my %th=&Apache::loncommon::timehash($tk);
my ($nextday,$nextmonth)=&nextday(%th);
my $outp='';
my $oneday=24*3600;
foreach (keys %allcal) {
my ($course,$startdate,$enddate)=($_=~/^(\w+)\@(\d+)\_(\d+)$/);
if (($startdate<$nextday) && ($enddate>$tk)) {
$outp.='___&&&___'.$course.'@'.$allcal{$_};
}
}
return ($nextday,$nextmonth,&normalcell($th{'day'},$outp));
}
sub handler {
my $r = shift;
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
# ---------------------------------------------------------- Get time right now
my $today=time;
my %todayhash=&Apache::loncommon::timehash($today);
# ---------------------------------------------------------- Get month and year
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['month','year']);
# ----------------------------------------------------- Summarize all calendars
my %allcal=();
foreach (&Apache::loncommon::findallcourses()) {
%allcal=(%allcal,&readcalendar($_));
}
# --------------------------------------------------- Decide what month to show
my $year=$todayhash{'year'};
if ($ENV{'form.year'}) { $year=$ENV{'form.year'}; }
my $month=$todayhash{'month'};
if ($ENV{'form.month'}) { $month=$ENV{'form.month'}; }
# --------------------------------------------- Find out first day of the month
my %firstday=&Apache::loncommon::timehash(
&Apache::loncommon::maketime( 'day' => 1, 'month'=> $month,
'year' => $year, 'hours' => 0,
'minutes' => 0, 'seconds' => 0,
'dlsav' => $todayhash{'dlsav'} ));
my $weekday=$firstday{'weekday'};
# ------------------------------------------------------------ Print the screen
$r->print(<The LearningOnline Network with CAPA
Announcements
ENDDOCUMENT
# does this user have privileges to post, etc?
my $allowed=0;
if ($ENV{'request.course.id'}) {
$allowed=&Apache::lonnet::allowed('srm',$ENV{'request.course.id'});
}
if ($allowed) {
my $coursenum=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
my $coursedom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
# ----------------------------------------------------- Store new submitted one
if ($ENV{'form.action'} eq 'new') {
&Apache::lonnet::put('calendar',{
$ENV{'form.startdate'}.'_'.$ENV{'form.enddate'} =>
$ENV{'form.msg'} },$coursedom,$coursenum);
}
# ---------------------------------------------------------------- Remove items
if ($ENV{'form.action'} eq 'del') {
my @delwhich=();
foreach (keys %ENV) {
if ($_=~/^form\.remove\_(.+)$/) {
push(@delwhich,$1);
}
}
&Apache::lonnet::del('calendar',\@delwhich,$coursedom,$coursenum);
}
# -------------------------------------------------------- Form to post new one
my %tomorrowhash=%todayhash;
$tomorrowhash{'day'}++;
my $tomorrow=&Apache::loncommon::maketime(%tomorrowhash);
$r->print(<Set Starting DateSet Ending Date
ENDFORM
}
my ($pm,$py,$fm,$fy)=($month-1,$year,$month+1,$year);
if ($pm<1) { ($pm,$py)=(12,$year-1); }
if ($fm>12){ ($fm,$fy)=(1,$year+1); }
$r->print('
');
my $tk=&Apache::loncommon::maketime(%firstday);
my $outp;
my $nm;
# ---------------------------------------------------------------- Actual table
$r->print('
');
for (my $i=0;$i<$weekday;$i++) { $r->print(&emptycell); }
for (my $i=$weekday;$i<=6;$i++) {
($tk,$nm,$outp)=&showday($tk,%allcal);
$r->print($outp);
}
$r->print('
');
for (my $k=0;$k<=3;$k++) {
$r->print('
');
for (my $i=0;$i<=6;$i++) {
($tk,$nm,$outp)=&showday($tk,%allcal);
if ($month!=$nm) { $outp=&emptycell; }
$r->print($outp);
}
$r->print('
');
}
# ------------------------------------------------------------------- End table
if ($allowed) { $r->print(''); }
$r->print('