/*
    Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but 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.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef LIBDCP_PACKAGE_H
#define LIBDCP_PACKAGE_H

#include "package_base.h"
#include "dc_cpl.h"
#include "im_cpl.h"
#include "util.h"
#include <boost/foreach.hpp>

namespace dcp {

class Asset;

template <class T>
class Package : public PackageBase
{
public:
	Package (boost::filesystem::path directory)
		: PackageBase (directory)
	{

	}

	void read (bool keep_going = false, ReadErrors* errors = 0)
	{
		std::list<boost::shared_ptr<dcp::Asset> > other_assets;

		BOOST_FOREACH (boost::shared_ptr<dcp::Asset> i, read_assetmap (keep_going, errors)) {
			boost::shared_ptr<T> cpl = boost::dynamic_pointer_cast<T> (i);
			if (cpl) {
				_cpls.push_back (cpl);
			} else {
				other_assets.push_back (i);
			}
		}

		BOOST_FOREACH (boost::shared_ptr<T> i, _cpls) {
			i->resolve_refs (other_assets);
		}
	}

	void resolve_refs (std::list<boost::shared_ptr<dcp::Asset> > assets)
	{
		BOOST_FOREACH (boost::shared_ptr<T> i, _cpls) {
			i->resolve_refs (assets);
		}
	}

	std::list<boost::shared_ptr<T> > cpls () const
	{
		return _cpls;
	}

	void add_cpl (boost::shared_ptr<T> cpl) {
		_cpls.push_back (cpl);
	}

protected:

	/** Write all the XML files for this package.
	 *  @param standand INTEROP, SMPTE or IMP
	 *  @param metadata Metadata to use for PKL and asset map files.
	 *  @param signer Signer to use, or 0.
	 */
	void do_write_xml (
		Standard standard,
		dcp::XMLMetadata metadata,
		boost::shared_ptr<const CertificateChain> signer
		)
	{
		BOOST_FOREACH (boost::shared_ptr<T> i, _cpls) {
			std::string const filename = "cpl_" + i->id() + ".xml";
			i->write_xml (_directory / filename, standard, signer);
		}

		std::string const pkl_uuid = make_uuid ();
		boost::filesystem::path const pkl_path = write_pkl (standard, pkl_uuid, metadata, signer);

		write_volindex (standard);
		write_assetmap (standard, pkl_uuid, boost::filesystem::file_size (pkl_path), metadata);
	}

	/** the CPLs that make up this package */
	std::list<boost::shared_ptr<T> > _cpls;
};

}

#endif