/*
 * Software License Agreement (BSD License)
 *
 *  Copyright (c) 2011-2014, Willow Garage, Inc.
 *  Copyright (c) 2014-2016, Open Source Robotics Foundation
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 *     notice, this list of conditions and the following disclaimer.
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 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
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 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
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/** \author Dalibor Matura, Jia Pan */

#ifndef FCL_ARTICULATED_MODEL_JOINT_CONFIG_H
#define FCL_ARTICULATED_MODEL_JOINT_CONFIG_H

#include "fcl/common/data_types.h"
#include <memory>
#include <vector>

namespace fcl
{

template <typename S>
class Joint;

template <typename S>
class JointConfig
{
public:
  JointConfig();

  JointConfig(const JointConfig& joint_cfg);

  JointConfig(const std::shared_ptr<Joint>& joint,
              S default_value = 0,
              S default_value_min = 0,
              S default_value_max = 0);

  std::size_t getDim() const;

  inline S operator [] (std::size_t i) const
  {
    return values_[i];
  }

  inline S& operator [] (std::size_t i)
  {
    return values_[i];
  }

  S getValue(std::size_t i) const;

  S& getValue(std::size_t i);
  
  S getLimitMin(std::size_t i) const;
  
  S& getLimitMin(std::size_t i);
  
  S getLimitMax(std::size_t i) const;
  
  S& getLimitMax(std::size_t i);
  
  std::shared_ptr<Joint> getJoint() const;

private:
  std::weak_ptr<Joint> joint_;
  
  std::vector<S> values_;
  std::vector<S> limits_min_;
  std::vector<S> limits_max_;
};

//============================================================================//
//                                                                            //
//                              Implementations                               //
//                                                                            //
//============================================================================//

//==============================================================================
template <typename S>
JointConfig<S>::JointConfig() {}

//==============================================================================
template <typename S>
JointConfig<S>::JointConfig(const JointConfig& joint_cfg) :
  joint_(joint_cfg.joint_),
  values_(joint_cfg.values_),
  limits_min_(joint_cfg.limits_min_),
  limits_max_(joint_cfg.limits_max_)
{
}

//==============================================================================
template <typename S>
JointConfig<S>::JointConfig(const std::shared_ptr<Joint>& joint,
                         S default_value,
                         S default_value_min,
                         S default_value_max) :
  joint_(joint)
{
  values_.resize(joint->getNumDofs(), default_value);
  limits_min_.resize(joint->getNumDofs(), default_value_min);
  limits_max_.resize(joint->getNumDofs(), default_value_max);
}

//==============================================================================
template <typename S>
std::size_t JointConfig<S>::getDim() const
{
  return values_.size();
}

//==============================================================================
template <typename S>
S JointConfig<S>::getValue(std::size_t i) const
{
  return values_[i];
}

//==============================================================================
template <typename S>
S& JointConfig<S>::getValue(std::size_t i)
{
  return values_[i];
}

//==============================================================================
template <typename S>
S JointConfig<S>::getLimitMin(std::size_t i) const
{
  return limits_min_[i];
}

//==============================================================================
template <typename S>
S& JointConfig<S>::getLimitMin(std::size_t i)
{
  return limits_min_[i];
}

//==============================================================================
template <typename S>
S JointConfig<S>::getLimitMax(std::size_t i) const
{
  return limits_max_[i];
}

//==============================================================================
template <typename S>
S& JointConfig<S>::getLimitMax(std::size_t i)
{
  return limits_max_[i];
}

//==============================================================================
template <typename S>
std::shared_ptr<Joint> JointConfig<S>::getJoint() const
{
  return joint_.lock();
}

} // namespace fcl

#endif