opac/opac-ics.pl

   1 #!/usr/bin/perl
   2
   3 # Copyright 2007 Liblime Ltd
   4
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20 # This script builds an ICalendar file (rfc 2445) for use in programs such as Ical
  21
  22 use strict;
  23 use warnings;
  24
  25 use CGI qw ( -utf8 );
  26 use Data::ICal;
  27 use Data::ICal::Entry::Event;
  28 use DateTime;
  29 use DateTime::Format::ICal;
  30 use DateTime::Event::ICal;
  31 use URI;
  32
  33 use C4::Auth;
  34 use C4::Koha;
  35 use C4::Circulation;
  36 use C4::Members;
  37 use Koha::DateUtils;
  38
  39 my $query = new CGI;
  40 my ( $template, $borrowernumber, $cookie ) = get_template_and_user(
  41     {
  42         template_name   => "opac-ics.tt",
  43         query           => $query,
  44         type            => "opac",
  45         authnotrequired => 0,
  46         debug           => 1,
  47     }
  48 );
  49
  50 # Create Calendar
  51 my $calendar = Data::ICal->new();
  52
  53 my $patron = Koha::Patrons->find( $borrowernumber );
  54 my $pending_checkouts = $patron->pending_checkouts;
  55
  56 while ( my $c = $pending_checkouts->next ) {
  57     my $issue = $c->unblessed_all_relateds;
  58     my $vevent = Data::ICal::Entry::Event->new();
  59     my $timestamp = DateTime->now(); # Defaults to UTC
  60     # Send some values to the template to generate summary and description
  61     $issue->{overdue} = $c->is_overdue;
  62     $template->param(
  63         overdue => $issue->{'overdue'},
  64         title   => $issue->{'title'},
  65         barcode => $issue->{'barcode'},
  66     );
  67     # Catch the result of the template and split on newline
  68     my ($summary,$description) = split /\n/, $template->output;
  69     my $datestart;
  70     if ($issue->{'overdue'} && $issue->{'overdue'} == 1) {
  71         # Not much use adding an event in the past for a book that is overdue
  72         # so we set datestart = now
  73         $datestart = $timestamp;
  74     } else {
  75         $datestart = dt_from_string($issue->{'date_due'});
  76         $datestart->set_time_zone('UTC');
  77     }
  78     # Create a UID that includes the issue number and the domain
  79     my $domain = '';
  80     my $baseurl = C4::Context->preference('OPACBaseURL');
  81     if ( $baseurl ne '' ) {
  82         my $url = URI->new($baseurl);
  83         $domain = $url->host;
  84     } else {
  85         warn "Make sure the systempreference OPACBaseURL is set!";
  86     }
  87     my $uid = 'issue-' . $issue->{'issue_id'} . '@' . $domain;
  88     # Create the event
  89     $vevent->add_properties(
  90         summary     => $summary,
  91         description => $description,
  92         dtstamp     => DateTime::Format::ICal->format_datetime($timestamp),
  93         dtstart     => DateTime::Format::ICal->format_datetime($datestart),
  94         uid         => $uid,
  95     );
  96     # Add it to the calendar
  97     $calendar->add_entry($vevent);
  98 }
  99
 100 print $query->header(
 101     -type       => 'application/octet-stream',
 102     -attachment => 'koha.ics'
 103 );
 104
 105 print $calendar->as_string;