%# BEGIN BPS TAGGED BLOCK {{{
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% $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>