/*
    Copyright (C) 2012-2015 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.

*/

#include "reel_encryptable_asset.h"
#include "mxf.h"
#include "dcp_assert.h"
#include <libcxml/cxml.h>
#include <libxml++/libxml++.h>

using std::string;
using boost::shared_ptr;
using boost::optional;
using namespace dcp;

ReelEncryptableAsset::ReelEncryptableAsset ()
	: ReelAsset ()
{

}

ReelEncryptableAsset::ReelEncryptableAsset (
	shared_ptr<Asset> asset, optional<string> key_id, Fraction edit_rate, int64_t intrinsic_duration, int64_t entry_point
	)
	: ReelAsset (asset, edit_rate, intrinsic_duration, entry_point)
	, _key_id (key_id)
{

}

ReelEncryptableAsset::ReelEncryptableAsset (shared_ptr<const cxml::Node> node)
	: ReelAsset (node)
	, _key_id (node->optional_string_child ("KeyId"))
{
	if (_key_id && _key_id.get().length() > 9) {
		_key_id = _key_id.get().substr (9);
	}
}

void
ReelEncryptableAsset::write_to_cpl (xmlpp::Node* node, Standard s) const
{
	ReelAsset::write_to_cpl (node, s);

	xmlpp::Node::NodeList c = node->get_children ();
	xmlpp::Node::NodeList::iterator i = c.begin();
	while (i != c.end() && (*i)->get_name() != cpl_node_name ()) {
		++i;
	}

	DCP_ASSERT (i != c.end ());
	
        if (_key_id) {
                (*i)->add_child("KeyId")->add_child_text ("urn:uuid:" + _key_id.get ());
        }
}