%# BEGIN BPS TAGGED BLOCK {{{
%#
%# COPYRIGHT:
%#
%# This software is Copyright (c) 1996-2017 Best Practical Solutions, LLC
%#                                          <sales@bestpractical.com>
%#
%# (Except where explicitly superseded by other copyright notices)
%#
%#
%# LICENSE:
%#
%# This work is made available to you under the terms of Version 2 of
%# the GNU General Public License. A copy of that license should have
%# been provided with this software, but in any event can be snarfed
%# from www.gnu.org.
%#
%# This work 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 this program; if not, write to the Free Software
%# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
%# 02110-1301 or visit their web page on the internet at
%# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html.
%#
%#
%# CONTRIBUTION SUBMISSION POLICY:
%#
%# (The following paragraph is not intended to limit the rights granted
%# to you to modify and distribute this software under the terms of
%# the GNU General Public License and is only of importance to you if
%# you choose to contribute your changes and enhancements to the
%# community by submitting them to Best Practical Solutions, LLC.)
%#
%# By intentionally submitting any modifications, corrections or
%# derivatives to this work, or any other work intended for use with
%# Request Tracker, to Best Practical Solutions, LLC, you confirm that
%# you are the copyright holder for those contributions and you grant
%# Best Practical Solutions,  LLC a nonexclusive, worldwide, irrevocable,
%# royalty-free, perpetual, license to use, copy, create derivative
%# works based on those contributions, and sublicense and distribute
%# those contributions and any derivatives thereof.
%#
%# END BPS TAGGED BLOCK }}}
<%init>
use Data::ICal;
use Data::ICal::Entry::Event;

my $path = $m->dhandler_arg;

my $notfound = sub {
    $r->headers_out->{'Status'} = '404 Not Found';
    $m->clear_and_abort;
};

$notfound->() unless $path =~ m!^([^/]+)/([^/]+)/(.*)(\.(ical|ics))?!;

my ($name, $auth, $search) = ($1, $2, $3);
# Unescape parts
$_ =~ s/\%([0-9a-z]{2})/chr(hex($1))/gei for $name, $search;
# Decode from bytes to characters
$_ = Encode::decode( "UTF-8", $_ ) for $name, $search;

my $user = RT::User->new( RT->SystemUser );
$user->Load( $name );
$notfound->() unless $user->id;

$notfound->() unless $user->ValidateAuthString( $auth, $search );

my $cu = RT::CurrentUser->new;
$cu->Load($user);
my $tickets = RT::Tickets->new( $cu );
$tickets->FromSQL($search);

$r->headers_out->{'Content-Type'} = 'text/calendar; charset=utf-8';

my $feed = Data::ICal->new();
$feed->add_properties('x-wr-calname' => ["RT due dates" => {value => "TEXT"}]);
$feed->add_properties('x-wr-caldesc' => ["Due dates for RT tickets: $search" => {value => "TEXT"}]);
$feed->add_properties('calscale' => ['gregorian']);
$feed->add_properties('method'   => ['publish']);
$feed->add_properties('prodid'   => ["-//" . RT->Config->Get('rtname') ."//"]);

while (my $t = $tickets->Next) {
    next unless $t->DueObj->IsSet;

    my $starttime = $t->StartsObj->IsSet ? $t->StartsObj : $t->CreatedObj;

    my $url;
    if ( RT->Config->Get('CanonicalizeURLsInFeeds') ) {
        $url = RT->Config->Get('WebURL');
    }
    else {
        $url = RT::Interface::Web::GetWebURLFromRequest();
    }
    $url .= "Ticket/Display.html?id=".$t->id,

    my $now = RT::Date->new( $cu ); $now->SetToNow;
    my $start = Data::ICal::Entry::Event->new;
    my $end   = Data::ICal::Entry::Event->new;


    $_->add_properties(
        url            => $url,
        description    => $url,
        organizer      => $t->OwnerObj->Name,
        dtstamp        => $now->iCal,
        created        => $t->CreatedObj->iCal,
       'last-modified' => $t->LastUpdatedObj->iCal,
    ) for $start, $end;

    my %time = ( Time => 0 );
    my %ical_value = ( value => 'DATE' );

    if ( defined $ARGS{Time} ?
         $ARGS{Time} : RT->Config->Get('TimeInICal', $user) ) {
        $time{Time} = 1;
        $ical_value{value} = 'DATE-TIME';
    }

    if( $ARGS{SingleEvent} ){
        $start->add_properties(
                               summary   => $t->Subject,
                               dtstart   => [$starttime->iCal( %time ) => \%ical_value ],
                               dtend     => [$t->DueObj->iCal( %time ) => \%ical_value ],
                              );
        $feed->add_entry($start);
    }
    else{
        $start->add_properties(
                               summary   => "Start: ".$t->Subject,
                               dtstart   => [$starttime->iCal( %time ) => \%ical_value ],
                               dtend     => [$starttime->iCal( %time ) => \%ical_value ],
                              );
        $end->add_properties(
                             summary   => "Due: ".$t->Subject,
                             dtstart   => [$t->DueObj->iCal( %time ) => \%ical_value ],
                             dtend     => [$t->DueObj->iCal( %time ) => \%ical_value ],
                            );
        $feed->add_entry($start);
        $feed->add_entry($end);
    }
}

$m->clear_buffer;
$m->out($feed->as_string);
$m->abort;
</%init>