%# BEGIN BPS TAGGED BLOCK {{{
%#
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%# LICENSE:
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%# 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.
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%# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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%# REST/1.0/Forms/group/default
%#
<%ARGS>
$id
$format => 's'
$fields => undef # these are the fields passed to the rt "-f" flag.
$changes => {}
</%ARGS>
<%perl>
my @comments;
my ($c, $o, $k, $e) = ("", [], {}, 0);
my %data = %$changes;
my $group = RT::Group->new($session{CurrentUser});

my @fields = qw(Name Description Disabled);
if ( $fields && %$fields ) {
    @fields = grep { exists $fields->{ lc $_ } } @fields;
}

my %fields = map { lc $_ => $_ } @fields;

if ($id ne 'new') {
    $group->Load($id);
    if (!$group->Id) {
        return [ "# Group $id does not exist.", [], {}, 1 ];
    }
}
else {
    if (%data == 0) {
        return [
            "# Required: Name",
            [ qw(id Name Description) ],
            {
                id => "group/new",
                Name => "",
                Description => ""
            },
            0
        ];
    }
    else {
        my %v;
        my %create = %fields;
        $create{name}         = "Name";
        $create{description}   = "Description";
        # Do any fields need to be excluded here?

        foreach my $k (keys %data) {
            if (exists $create{lc $k}) {
                $v{$create{lc $k}} = delete $data{$k};
            }
        }

        $group->CreateUserDefinedGroup(%v);
        unless ($group->Id) {
            return [ "# Could not create group.", [], {}, 1 ];
        }

        $id = $group->Id;
        delete $data{id};
        push(@comments, "# Group $id created.");
        goto DONE if %data == 0;
    }
}

if (%data == 0) {
    my @data;

    push @data, [ id => "group/".$group->Id ];
    foreach my $key (@fields) {
        push @data, [ $key => $group->$key ];
    }

    # Members
    unless ( $fields && !exists $fields->{members} ) {
        my $gms = [];
        my $GroupMembers = $group->MembersObj();
        while ( my $mo = $GroupMembers->Next() ) {
            if ( $mo->MemberObj->IsGroup ) {
                my $us = $mo->MemberObj->Object->UserMembersObj();
                my @users;
                while ( my $u = $us->Next() ) {
                    push @users, $u->RealName . ' <' . $u->EmailAddress . '>';
                }
                push @$gms,
                    'GROUP ['
                    . $mo->MemberObj->Object->Name . ']' . ' ('
                    . join( ';', @users ) . ')';
            } elsif ( $mo->MemberObj->IsUser ) {
                push @$gms,
                    $mo->MemberObj->Object->RealName . ' <'
                    . $mo->MemberObj->Object->EmailAddress . '>';
            }
        }
        push @data, [ Members => $gms ];
    }

    # Custom fields
    my $CustomFields = $group->CustomFields;
    while ( my $CustomField = $CustomFields->Next() ) {
        next
            unless ( !%$fields
            || exists $fields->{ lc "CF-" . $CustomField->Name } );
        next unless $CustomField->CurrentUserHasRight('SeeCustomField');
        my $CFvalues = $group->CustomFieldValues( $CustomField->Id );
        my @CFvalues;
        while ( my $CFvalue = $CFvalues->Next() ) {
            push @CFvalues, $CFvalue->Content;
        }
        push @data, [ "CF-" . $CustomField->Name => \@CFvalues ];
    }

    my %k = map {@$_} @data;
    $o = [ map {$_->[0]} @data ];
    $k = \%k;
}
else {
    my ($get, $set, $key, $val, $n, $s);
    my $updated;
    foreach $key (keys %data) {
        $val = $data{$key};
        $key = lc $key;
        $n = 1;

        if ($key eq 'name' || $key eq 'description' || exists $fields{$key})
        {
            if (exists $fields{$key}) {
                $key = $fields{$key};
            }
            else {
                $key = "Description" if $key eq 'description';
                $key = "Name" if $key eq 'name';
            }
            $set = "Set$key";

            next if $val eq $group->$key;
            ($n, $s) = $group->$set($val);
        }
        elsif ($key ne 'id') {
            $n = 0;
            $s = "Unknown field.";
        }

    SET:
        if ($n == 0) {
            $e = 1;
            push @comments, "# $key: $s";
            unless (@$o) {
                my %o = keys %$changes;
                delete @o{"id", @fields};
                @$o = ("id", @fields, keys %o);
                $k = $changes;
            }
        }
        else {
            $updated ||= 1;
        }
    }

    push(@comments, "# Group $id updated.") if $updated;
}

DONE:
$c ||= join("\n", @comments) if @comments;
return [ $c, $o, $k, $e ];
</%perl>