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/* Author: Ryan Luna */

#include "ompl/control/PlannerData.h"

ompl::control::PlannerData::PlannerData(const SpaceInformationPtr &siC) : base::PlannerData(boost::static_pointer_cast<base::SpaceInformation>(siC)), siC_(siC)
{
}

ompl::control::PlannerData::~PlannerData()
{
    freeMemory();
}

bool ompl::control::PlannerData::removeVertex (unsigned int vIndex)
{
    return ompl::base::PlannerData::removeVertex(vIndex);
}

bool ompl::control::PlannerData::removeVertex (const ompl::base::PlannerDataVertex &st)
{
    unsigned int index = vertexIndex (st);
    if (index == INVALID_INDEX)
        return false;

    std::map<unsigned int, const base::PlannerDataEdge*> edgeMap;
    getEdges(index, edgeMap);

    for (std::map<unsigned int, const base::PlannerDataEdge*>::iterator edgemapit = edgeMap.begin(); edgemapit != edgeMap.end(); ++edgemapit)
    {
        // Before deleting the edge, free the control associated with it, if it was decoupled
        Control *ctrl = const_cast<Control*>(static_cast<const PlannerDataEdgeControl*>(edgemapit->second)->getControl());
        std::set<Control*>::iterator it = decoupledControls_.find(ctrl);
        if (it != decoupledControls_.end())
        {
            siC_->freeControl(*it);
            decoupledControls_.erase(it);
        }
    }

    return ompl::base::PlannerData::removeVertex(index);
}

bool ompl::control::PlannerData::removeEdge (unsigned int v1, unsigned int v2)
{
    return ompl::base::PlannerData::removeEdge(v1, v2);
}

bool ompl::control::PlannerData::removeEdge (const ompl::base::PlannerDataVertex &v1, const ompl::base::PlannerDataVertex &v2)
{
    unsigned int index1, index2;
    index1 = vertexIndex(v1);
    index2 = vertexIndex(v2);

    if (index1 == INVALID_INDEX || index2 == INVALID_INDEX)
        return false;

    // Before deleting the edge, free the control associated with it, if it was decoupled
    PlannerDataEdgeControl &edge = static_cast<PlannerDataEdgeControl&>(getEdge(index1, index2));
    Control *ctrl = const_cast<Control*>(edge.getControl());
    std::set<Control*>::iterator it = decoupledControls_.find(ctrl);
    if (it != decoupledControls_.end())
    {
        siC_->freeControl(*it);
        decoupledControls_.erase(it);
    }

    return ompl::base::PlannerData::removeEdge(index1, index2);
}

void ompl::control::PlannerData::clear ()
{
    ompl::base::PlannerData::clear();

    freeMemory();
    decoupledControls_.clear();
}

void ompl::control::PlannerData::decoupleFromPlanner()
{
    ompl::base::PlannerData::decoupleFromPlanner();

    for (unsigned int i = 0; i < numVertices(); ++i)
    {
        for (unsigned int j = 0; j < numVertices(); ++j)
        {
            if (edgeExists(i, j))
            {
                PlannerDataEdgeControl &edge = static_cast<PlannerDataEdgeControl&>(getEdge(i, j));
                // If this edge's control is not in the decoupled list, clone it and add it
                Control *ctrl = const_cast<Control*>(edge.getControl());
                if (decoupledControls_.find(ctrl) == decoupledControls_.end())
                {
                    Control *clone = siC_->cloneControl(ctrl);
                    decoupledControls_.insert(clone);
                    // Replacing the shallow control pointer with our shiny new clone
                    edge.c_ = clone;
                }
            }
        }
    }
}

const ompl::control::SpaceInformationPtr& ompl::control::PlannerData::getSpaceInformation() const
{
    return siC_;
}

bool ompl::control::PlannerData::hasControls() const
{
    return true;
}

void ompl::control::PlannerData::freeMemory()
{
    for (std::set<Control*>::iterator it = decoupledControls_.begin(); it != decoupledControls_.end(); ++it)
        siC_->freeControl(*it);
}
