package EPrints::Plugin::Export::OPFXML;

use EPrints::Plugin::Export::XMLFile;
@ISA = ( "EPrints::Plugin::Export::XMLFile" );

use strict;

sub new
{
	my( $class, %opts ) = @_;
	my $self = $class->SUPER::new( %opts );

	$self->{name} = "Open Packaging Format XML";

# This plug-in can only output a single eprint record, no lists or other types of objects
	$self->{accept} = [ 'dataobj/eprint' ];
	$self->{visible} = "all";

# Specify the mimetype so we can use an HTTP ACCEPT header to get this back.
	$self->{mimetype} = "application/oebps-package+xml; charset=utf-8";

# Again specify what we are exporting
	$self->{xmlns} = "http://www.idpf.org/2007/opf";
	$self->{schemaLocation} = "http://www.idpf.org/2007/opf";

	return $self;
}

# Method which is called to output the eprint, we would have output_list if we could handle lists
sub output_dataobj
{
	my( $plugin, $dataobj ) = @_;

	my $xml = $plugin->xml_dataobj( $dataobj );

	return "<?xml version='1.0' encoding='UTF-8'?>" . EPrints::XML::to_string( $xml );
}

# The method which actually does the work
sub xml_dataobj
{
	my( $plugin, $eprint ) = @_;

	my $repo = $plugin->{repository};

	my $package = $repo->make_element("package", xmlns=>"http://www.idpf.org/2007/opf", "unique-identifier"=>"EPB-UUID", version=>"2.0");

	my $metadata = $repo->make_element("metadata", "xmlns:opf"=>"http://www.idpf.org/2007/opf", "xmlns:dc"=>"http://purl.org/dc/elements/1.1/");
	$package->appendChild($metadata);

	my $title = $repo->make_element("dc:title");
	$title->appendText($eprint->value("title"));

	$metadata->appendChild($title);

	if( $eprint->exists_and_set( "creators" ) )
	{
		foreach my $name ( @{ $eprint->get_value( "creators" ) } )
		{
# given name first
			my $creator = $repo->make_element("dc:creator");
			$creator->appendText(EPrints::Utils::make_name_string( $name->{name}, 1 ));
			$metadata->appendChild($creator);
		}
	}


	return $package;

}

1;