# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Frédéric Buclin.
# Portions created by Frédéric Buclin are Copyright (C) 2009
# Frédéric Buclin. All Rights Reserved.
#
# Contributor(s): 
#   Frédéric Buclin <LpSolit@gmail.com>
#   Max Kanat-Alexander <mkanat@bugzilla.org>

package Bugzilla::Extension::BmpConvert;
use strict;
use base qw(Bugzilla::Extension);

use Image::Magick;

our $VERSION = '1.0';

sub attachment_process_data {
    my ($self, $args) = @_;
    return unless $args->{attributes}->{mimetype} eq 'image/bmp';

    my $data = ${$args->{data}};
    my $img = Image::Magick->new(magick => 'bmp');

    # $data is a filehandle.
    if (ref $data) {
        $img->Read(file => \*$data);
        $img->set(magick => 'png');
        $img->Write(file => \*$data);
    }
    # $data is a blob.
    else {
        $img->BlobToImage($data);
        $img->set(magick => 'png');
        $data = $img->ImageToBlob();
    }
    undef $img;

    ${$args->{data}} = $data;
    $args->{attributes}->{mimetype} = 'image/png';
    $args->{attributes}->{filename} =~ s/^(.+)\.bmp$/$1.png/i;
}

 __PACKAGE__->NAME;