sub extract_show_info {
    my $input_string = shift @_;

    my $result = extract_episode_data($input_string);
    $result and return $result;

    if ( my @date = $_ =~ /$RE{time}{ymd}{-keep}/ ) {
        return { ... };
    }

    return;
}

sub extract_episode_data {

    my $input_string = shift @_;
   
    if ( ... ) {
        return { type    => 'se',
                 season  => $1, 
                 episode => $2
               };
    }

    return;
}