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package RT::Interface::Email::Filter::SpamAssassin;
use strict;
use warnings;

use Mail::SpamAssassin;
my $spamtest = Mail::SpamAssassin->new();

sub GetCurrentUser {
    my %args = (
        Message     => undef,
        CurrentUser => undef,
        AuthLevel   => undef,
        @_
    );
    my $status = $spamtest->check( $args{'Message'} );
    return ( $args{'CurrentUser'}, $args{'AuthLevel'} )
      unless $status->is_spam();

    eval { $status->rewrite_mail() };
    if ( $status->get_hits > $status->get_required_hits() * 1.5 ) {

        # Spammy indeed
        return ( $args{'CurrentUser'}, -1 );
    }
    return ( $args{'CurrentUser'}, $args{'AuthLevel'} );

}

=head1 NAME

RT::Interface::Email::Filter::SpamAssassin - Spam filter for RT

=head1 SYNOPSIS

    # in RT config
    Set(@MailPlugins, 'Filter::SpamAssassin', ...other filters...);

=head1 DESCRIPTION

This plugin checks to see if an incoming mail is spam (using
C<spamassassin>) and if so, rewrites its headers. If the mail is very
definitely spam - 1.5x more hits than required - then it is dropped on
the floor; otherwise, it is passed on as normal.

=cut

RT::Base->_ImportOverlays();

1;
