/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2014 Wireless Communications and Networking Group (WCNG),
 * University of Rochester, Rochester, NY, USA.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Cristiano Tapparello <cristiano.tapparello@rochester.edu>
 */

#ifndef ENERGY_HARVESTER_CONTAINER_H
#define ENERGY_HARVESTER_CONTAINER_H

#include "ns3/energy-harvester.h"
#include "ns3/object.h"
#include <vector>
#include <stdint.h>

namespace ns3 {
    
class EnergyHarvester;

/**
 * \ingroup energy
 * \brief Holds a vector of ns3::EnergyHarvester pointers.
 *
 * EnergyHarvesterContainer returns a list of EnergyHarvester pointers
 * installed on a node. Users can use this list to access EnergyHarvester
 * objects to obtain the total energy harvested on a node easily.
 *
 * \see NetDeviceContainer
 *
 */
class EnergyHarvesterContainer : public Object
{
public:
  typedef std::vector< Ptr<EnergyHarvester> >::const_iterator Iterator;

public:
  static TypeId GetTypeId (void);
  /**
   * Creates an empty EnergyHarvesterContainer.
   */
  EnergyHarvesterContainer ();
  ~EnergyHarvesterContainer ();

  /**
   * \param harvester Pointer to an EnergyHarvester.
   *
   * Creates a EnergyHarvesterContainer with exactly one EnergyHarvester
   * previously instantiated.
   */
  EnergyHarvesterContainer (Ptr<EnergyHarvester> harvester);

  /**
   * \param harvesterName Name of EnergyHarvester.
   *
   * Creates an EnergyHarvesterContainer with exactly one EnergyHarvester
   * previously instantiated and assigned a name using the Object name service.
   * This EnergyHarvester is specified by its assigned name.
   */
  EnergyHarvesterContainer (std::string harvesterName);

  /**
   * \param a A EnergyHarvesterContainer.
   * \param b Another EnergyHarvesterContainer.
   *
   * Creates a EnergyHarvesterContainer by concatenating EnergyHarvesterContainer b
   * to EnergyHarvesterContainer a.
   *
   * \note Can be used to concatenate 2 Ptr<EnergyHarvester> directly. C++
   * will be calling EnergyHarvesterContainer constructor with Ptr<EnergyHarvester>
   * first.
   */
  EnergyHarvesterContainer (const EnergyHarvesterContainer &a,
                            const EnergyHarvesterContainer &b);

  /**
   * \brief Get an iterator which refers to the first EnergyHarvester pointer
   * in the container.
   *
   * \returns An iterator which refers to the first EnergyHarvester in container.
   *
   * EnergyHarvesters can be retrieved from the container in two ways. First,
   * directly by an index into the container, and second, using an iterator.
   * This method is used in the iterator method and is typically used in a
   * for-loop to run through the EnergyHarvesters.
   *
   * \code
   *   EnergyHarvesterContainer::Iterator i;
   *   for (i = container.Begin (); i != container.End (); ++i)
   *     {
   *       (*i)->method ();  // some EnergyHarvester method
   *     }
   * \endcode
   */
  Iterator Begin (void) const;

  /**
   * \brief Get an iterator which refers to the last EnergyHarvester pointer
   * in the container.
   *
   * \returns An iterator which refers to the last EnergyHarvester in container.
   *
   * EnergyHarvesters can be retrieved from the container in two ways. First,
   * directly by an index into the container, and second, using an iterator.
   * This method is used in the iterator method and is typically used in a
   * for-loop to run through the EnergyHarvesters.
   *
   * \code
   *   EnergyHarvesterContainer::Iterator i;
   *   for (i = container.Begin (); i != container.End (); ++i)
   *     {
   *       (*i)->method ();  // some EnergyHarvester method
   *     }
   * \endcode
   */
  Iterator End (void) const;

  /**
   * \brief Get the number of Ptr<EnergyHarvester> stored in this container.
   *
   * \returns The number of Ptr<EnergyHarvester> stored in this container.
   */
  uint32_t GetN (void) const;

  /**
   * \brief Get the i-th Ptr<EnergyHarvester> stored in this container.
   *
   * \param i Index of the requested Ptr<EnergyHarvester>.
   * \returns The requested Ptr<EnergyHarvester>.
   */
  Ptr<EnergyHarvester> Get (uint32_t i) const;

  /**
   * \param container Another EnergyHarvesterContainer.
   *
   * Appends the contents of another EnergyHarvesterContainer to the end of
   * this EnergyHarvesterContainer.
   */
  void Add (EnergyHarvesterContainer container);

  /**
   * \brief Append a single Ptr<EnergyHarvester> to the end of this container.
   *
   * \param harvester Pointer to an EnergyHarvester.
   */
  void Add (Ptr<EnergyHarvester> harvester);

  /**
   * \brief Append a single Ptr<EnergyHarvester> referred to by its object
   * name to the end of this container.
   *
   * \param harvesterName Name of EnergyHarvester object.
   */
  void Add (std::string harvesterName);

  /**
   * \brief Removes all elements in the container.
   */
  void Clear (void);

private:
  virtual void DoDispose (void);

  /**
   * \brief Calls Object::Initialize () for all EnergySource objects.
   */
  virtual void DoInitialize (void);

private:
  std::vector< Ptr<EnergyHarvester> > m_harvesters;

};
    
} // namespace ns3


#endif /* defined(ENERGY_HARVESTER_CONTAINER_H) */
