/*
 Copyright (C) 2004  Erik Hjortsberg

 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 DIMEENTITYFACTORY_H
#define DIMEENTITYFACTORY_H

#include "EmberOgrePrerequisites.h"
#include "framework/ConsoleObject.h"

#include <Eris/Factory.h>

#include <Atlas/Objects/Entity.h>

#include <sigc++/trackable.h>
#include <sigc++/signal.h>
#include <set>

namespace Eris
{
class Entity;
class View;
class TypeService;
class TypeInfo;
class Avatar;
}

namespace Ember
{
namespace OgreView
{

class EmberEntity;
class ViewEmberEntity;
class WorldEmberEntity;
class Scene;

/**
 * @brief Creates the EmberEntities required.
 *
 * Basically this attaches to Eris and creates Entites on demand.
 * @see Eris::Factory
 */
class EmberEntityFactory: public Eris::Factory, public virtual sigc::trackable, public ConsoleObject
{
public:

	typedef std::set<std::string> StringSet;

	/**
	 * @brief Ctor.
	 *
	 * This should be instantiated by EmberOgre or similar high level object. Note that Eris upon shutdown will delete all registered factories, so don't delete an instance of this yourself.
	 */
	EmberEntityFactory(Eris::View& view, Scene& scene);
	virtual ~EmberEntityFactory();

	/**
	 * @brief Will always return true as we want all entities created to be handled by this class.
	 */
	virtual bool accept(const Atlas::Objects::Entity::RootEntity &ge, Eris::TypeInfo* type);

	/**
	 Creates instances of EmberEntity and its subclasses.
	 */
	virtual Eris::Entity* instantiate(const Atlas::Objects::Entity::RootEntity &ge, Eris::TypeInfo* type, Eris::View* w);

	/** retrieve this factory's priority level; higher priority factories
	 get first chance to process a received Atlas entity. The default implementation
	 returns one. */
	virtual int priority();

	/**
	 Returns the main world entity.
	 */
	WorldEmberEntity* getWorld() const;

	/**
	 *    Reimplements the ConsoleObject::runCommand method
	 * @param command
	 * @param args
	 */
	virtual void runCommand(const std::string &command, const std::string &args);

	/**
	 Command for setting whether models should be shown or not.
	 */
	const ConsoleCommandWrapper ShowModels;

	/**
	 Dumps the attributes of a supplied entity to the std::out.
	 */
	const ConsoleCommandWrapper DumpAttributes;

	/**
	 *    Dumps the attributes of the entity with the supplied id to the std::out.
	 * @param entityId
	 * @return
	 */
	void dumpAttributesOfEntity(const std::string& entityId) const;

	/**
	 * @brief Emitted when the factory is being deleted.
	 */
	sigc::signal<void> EventBeingDeleted;

protected:

	/**
	 Creates a WorldEmberEntity instance.
	 */
	Eris::Entity* createWorld(const Atlas::Objects::Entity::RootEntity & ge, Eris::TypeInfo* type, Eris::View *world);

	Eris::View& mView;

	Eris::TypeService& mTypeService;

	/**
	 * @brief The scene which will handle the entities.
	 */
	Scene& mScene;


	Eris::TypeInfo* mTerrainType;

	/**
	 * @brief The world entity, which is also the base entity of the view.
	 */
	WorldEmberEntity *mWorldEntity;

};

}

}

#endif // DIMEENTITYFACTORY_H
