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%# BEGIN BPS TAGGED BLOCK {{{
%#
%# COPYRIGHT:
%#
%# This software is Copyright (c) 1996-2019 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%# (Except where explicitly superseded by other copyright notices)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 }}}
% $r->content_type('application/json; charset=utf-8');
<% JSON( \@suggestions ) |n %>
% $m->abort;
<%ARGS>
$return => ''
$term => undef
$delim => undef
$max => undef
$privileged => undef
$exclude => ''
$op => undef
</%ARGS>
<%INIT>
# Only allow certain return fields
$return = 'EmailAddress'
    unless $return =~ /^(?:EmailAddress|Name|RealName)$/;

$m->abort unless defined $return
             and defined $term
             and length $term;

# Use our delimeter if we have one
if ( defined $delim and length $delim ) {
    if ( $delim eq ',' ) {
        $delim = qr/,\s*/;
    } else {
        $delim = qr/\Q$delim\E/;
    }

    # If the field handles multiple values, pop the last one off
    $term = (split $delim, $term)[-1] if $term =~ $delim;
}

my $CurrentUser = $session{'CurrentUser'};

# Require privileged users or overriding config
$m->abort unless $CurrentUser->Privileged
              or RT->Config->Get('AllowUserAutocompleteForUnprivileged');

# the API wants a list of ids
my @exclude = split /\s*,\s*/, $exclude;
push @exclude, RT->SystemUser->id, RT->Nobody->id;

$m->callback( CallbackName => 'ModifyMaxResults', max => \$max );
$max //= 10;

my $users = RT::Users->new($CurrentUser);
$users->SimpleSearch( Privileged => $privileged,
                      Return     => $return,
                      Term       => $term,
                      Max        => $max,
                      Exclude    => \@exclude,
                      # If an operator is provided, check against only
                      # the returned field using that operator
                      $op ? ( Fields => { $return => $op } ) : (),
                    );

my @suggestions;
while ( my $user = $users->Next ) {
    my $suggestion = { id => $user->id, label => $user->Format, value => $user->$return };
    $m->callback( CallbackName => "ModifySuggestion", suggestion => $suggestion, user => $user );
    push @suggestions, $suggestion;
}

</%INIT>