/* === S Y N F I G ========================================================= */
/*!	\file valuedescbonelink.cpp
**	\brief Template File
**
**	$Id$
**
**	\legal
**	......... ... 2013 Ivan Mahonin
**	......... ... 2014 Jerome Blanchi
**
**	This package 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 package 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.
**	\endlegal
*/
/* ========================================================================= */

/* === H E A D E R S ======================================================= */

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include "layerparamconnect.h"
#include "valuenodelinkconnect.h"
#include "valuenodereplace.h"
#include "valuedescbonelink.h"

#include <synfigapp/canvasinterface.h>
#include <synfig/valuenodes/valuenode_const.h>
#include <synfig/valuenodes/valuenode_composite.h>
#include <synfig/valuenodes/valuenode_bone.h>
#include <synfig/valuenodes/valuenode_bonelink.h>
#include <synfig/valuetransformation.h>

#include <synfigapp/general.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace synfigapp;
using namespace Action;

/* === M A C R O S ========================================================= */

ACTION_INIT(Action::ValueDescBoneLink);
ACTION_SET_NAME(Action::ValueDescBoneLink,"ValueDescBoneLink");
ACTION_SET_LOCAL_NAME(Action::ValueDescBoneLink,N_("Link to Bone"));
ACTION_SET_TASK(Action::ValueDescBoneLink,"bone_link");
ACTION_SET_CATEGORY(Action::ValueDescBoneLink,Action::CATEGORY_VALUEDESC);
ACTION_SET_PRIORITY(Action::ValueDescBoneLink,0);
ACTION_SET_VERSION(Action::ValueDescBoneLink,"0.0");
ACTION_SET_CVS_ID(Action::ValueDescBoneLink,"$Id$");

/* === G L O B A L S ======================================================= */

/* === P R O C E D U R E S ================================================= */

/* === M E T H O D S ======================================================= */

Action::ValueDescBoneLink::ValueDescBoneLink():
	time(0)
{
}

Action::ParamVocab
Action::ValueDescBoneLink::get_param_vocab()
{
	ParamVocab ret(Action::CanvasSpecific::get_param_vocab());

	ret.push_back(ParamDesc("selected_value_desc",Param::TYPE_VALUEDESC)
		.set_local_name(_("ValueDesc to link"))
		.set_supports_multiple()
	);
	ret.push_back(ParamDesc("value_desc",Param::TYPE_VALUEDESC)
		.set_local_name(_("ValueDesc on Bone to link to"))
	);
	ret.push_back(ParamDesc("time",Param::TYPE_TIME)
		.set_local_name(_("Time"))
		.set_optional()
	);

	return ret;
}

bool
Action::ValueDescBoneLink::is_candidate(const ParamList &x)
{
	ParamList::const_iterator iter;

	ValueDesc value_desc(x.find("value_desc")->second.get_value_desc());

	bool selected_value_desc_is_bone = false;
	pair<ParamList::const_iterator, ParamList::const_iterator> selected_vd_range = x.equal_range("selected_value_desc");
	//get the range of selected value desc to check if at least one is a bone
	for (iter = selected_vd_range.first; iter != selected_vd_range.second ; ++iter)
	{
		ValueDesc selected_value_desc(iter->second.get_value_desc());
		//Simple test of bone type
		//TODO : if bone, reject only if same skeleton
		if ((selected_value_desc.parent_is_value_node()) &&
			(ValueNode_Bone::Handle::cast_dynamic(selected_value_desc.get_parent_value_node()))
			)
		{
			selected_value_desc_is_bone = true;
			break;
		}
	}

	if (!candidate_check(get_param_vocab(),x))
		return false;

	return value_desc.parent_is_value_node()
		&& ValueNode_Bone::Handle::cast_dynamic(value_desc.get_parent_value_node())
		&& !selected_value_desc_is_bone;
}

bool
Action::ValueDescBoneLink::set_param(const synfig::String& name, const Action::Param &param)
{
	if (name == "value_desc" && param.get_type() == Param::TYPE_VALUEDESC
	 && param.get_value_desc().parent_is_value_node()
	 && ValueNode_Bone::Handle::cast_dynamic(param.get_value_desc().get_parent_value_node()) )
	{
		value_desc = param.get_value_desc();
		return true;
	}

	if (name == "selected_value_desc" && param.get_type() == Param::TYPE_VALUEDESC)
	{
		value_desc_list.push_back(param.get_value_desc());
		return true;
	}

	if(name=="time" && param.get_type()==Param::TYPE_TIME)
	{
		time=param.get_time();
		return true;
	}

	return Action::CanvasSpecific::set_param(name,param);
}

bool
Action::ValueDescBoneLink::is_ready()const
{
	if (value_desc_list.empty())
		return false;
	if (!value_desc)
		return false;
	return Action::CanvasSpecific::is_ready();
}

void
Action::ValueDescBoneLink::prepare()
{
	if (value_desc_list.empty())
		throw Error(Error::TYPE_NOTREADY);

	clear();
	ValueNode_Bone::Handle bone_value_node;
	if (value_desc.parent_is_value_node())
		bone_value_node = ValueNode_Bone::Handle::cast_dynamic(value_desc.get_parent_value_node());

	if (!bone_value_node)
		throw Error(Error::TYPE_NOTREADY);

	for (std::list<ValueDesc>::iterator iter = value_desc_list.begin(); iter != value_desc_list.end(); ++iter)
	{
		ValueDesc& value_desc(*iter);

		if (!ValueNode_BoneLink::check_type(value_desc.get_value_type()))
			continue;
		if (value_desc.parent_is_value_node() && bone_value_node == value_desc.get_parent_value_node())
			continue;

		/*
		if (value_desc.is_value_node())
		{
			ValueNode_BoneLink::Handle bone_link_node = ValueNode_BoneLink::Handle::cast_dynamic(value_desc.get_value_node());
			if (bone_link_node) {
				// add bone into existant BoneLink
				Action::Handle action = ValueNodeStaticListInsert::create();
				action->set_param("canvas", get_canvas());
				action->set_param("canvas_interface", get_canvas_interface());
				action->set_param("value_desc", ValueDesc(ValueNode::Handle(bone_link_node->get_link("bone_weight_list")), 0));
				action->set_param("item", ValueNode::Handle(bone_weight_pair_node));

				assert(action->is_ready());
				if (!action->is_ready()) throw Error(Error::TYPE_NOTREADY);
				add_action_front(action);

				continue;
			}
		}
		*/

		// create new BoneLink
		ValueNode_BoneLink::Handle bone_link_node = ValueNode_BoneLink::create(value_desc.get_value_type());
		bone_link_node->set_link("bone", ValueNode_Const::create(ValueBase(bone_value_node)));
		bone_link_node->set_link("base_value",
			ValueNode_Composite::create(
				ValueTransformation::back_transform(
					bone_link_node->get_bone_transformation(time),
					value_desc.get_value(time) )));

		// exported ValueNode
		if (value_desc.parent_is_canvas())
		{
			Action::Handle action = ValueNodeReplace::create();
			action->set_param("canvas", get_canvas());
			action->set_param("canvas_interface", get_canvas_interface());
			action->set_param("src", ValueNode::Handle(bone_link_node));
			action->set_param("dest", value_desc.get_value_node());

			assert(action->is_ready());
			if (!action->is_ready()) throw Error(Error::TYPE_NOTREADY);
			add_action_front(action);
		}
		else if (value_desc.parent_is_layer())
		{
			Action::Handle action = LayerParamConnect::create();
			action->set_param("layer", value_desc.get_layer());
			action->set_param("param", value_desc.get_param_name());
			action->set_param("canvas", get_canvas());
			action->set_param("canvas_interface", get_canvas_interface());
			action->set_param("value_node", ValueNode::Handle(bone_link_node));

			assert(action->is_ready());
			if (!action->is_ready()) throw Error(Error::TYPE_NOTREADY);
			add_action_front(action);
		}
		else if (value_desc.parent_is_value_node())
		{
			Action::Handle action = ValueNodeLinkConnect::create();
			action->set_param("canvas", get_canvas());
			action->set_param("canvas_interface", get_canvas_interface());
			action->set_param("parent_value_node", value_desc.get_parent_value_node());
			action->set_param("index", value_desc.get_index());
			action->set_param("value_node", ValueNode::Handle(bone_link_node));

			assert(action->is_ready());
			if (!action->is_ready()) throw Error(Error::TYPE_NOTREADY);
			add_action_front(action);
		}
	}
}