/* This file is part of Machina.
 * Copyright 2007-2011 David Robillard <http://drobilla.net>
 *
 * Machina 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 3 of the License, or
 * (at your option) any later version.
 *
 * Machina 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 Machina.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MACHINA_MACHINEBUILDER_HPP
#define MACHINA_MACHINEBUILDER_HPP

#include <list>

#include "raul/SharedPtr.hpp"
#include "raul/TimeStamp.hpp"

namespace Machina {

class Machine;
class Node;

class MachineBuilder {
public:
	MachineBuilder(SharedPtr<Machine> machine,
	               double             quantization,
	               bool               step);

	void set_time(Raul::TimeStamp time) { _time = time; }

	void event(Raul::TimeStamp time_offset, size_t size, unsigned char* buf);

	void reset();
	void resolve();

	SharedPtr<Machine> finish();

private:
	bool is_delay_node(SharedPtr<Node> node) const;
	void set_node_duration(SharedPtr<Node> node, Raul::TimeDuration d) const;

	SharedPtr<Node>
	connect_nodes(SharedPtr<Machine> m,
                  SharedPtr<Node>    tail, Raul::TimeStamp tail_end_time,
     	          SharedPtr<Node>    head, Raul::TimeStamp head_start_time);

	typedef std::list<SharedPtr<Node> > ActiveList;
	ActiveList _active_nodes;

	typedef std::list<std::pair<Raul::TimeStamp, SharedPtr<Node> > > PolyList;
	PolyList _poly_nodes;

	double             _quantization;
	Raul::TimeStamp    _time;

	SharedPtr<Machine> _machine;
	SharedPtr<Node>    _initial_node;
	SharedPtr<Node>    _connect_node;
	Raul::TimeStamp    _connect_node_end_time;

	bool _step;
};

} // namespace Machina

#endif // MACHINA_MACHINEBUILDER_HPP