/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2012 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)

 *

 * 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: Manuel Requena <manuel.requena@cttc.es>

 */

#ifndef EPC_X2_HEADER_H

#define EPC_X2_HEADER_H

#include "ns3/epc-x2-sap.h"

#include "ns3/header.h"

#include <vector>

namespace ns3 {

class EpcX2Header : public Header

{

public:

  EpcX2Header ();

  virtual ~EpcX2Header ();

  static TypeId GetTypeId (void);

  virtual TypeId GetInstanceTypeId (void) const;

  virtual uint32_t GetSerializedSize (void) const;

  virtual void Serialize (Buffer::Iterator start) const;

  virtual uint32_t Deserialize (Buffer::Iterator start);

  virtual void Print (std::ostream &os) const;

  uint8_t GetMessageType () const;

  void SetMessageType (uint8_t messageType);

  uint8_t GetProcedureCode () const;

  void SetProcedureCode (uint8_t procedureCode);

  void SetLengthOfIes (uint32_t lengthOfIes);

  void SetNumberOfIes (uint32_t numberOfIes);

  enum ProcedureCode_t {

    HandoverPreparation     = 0

  };

  enum TypeOfMessage_t {

    InitiatingMessage       = 0,

    SuccessfulOutcome       = 1,

    UnsuccessfulOutcome     = 2

  };

private:

  uint32_t m_headerLength;

  uint8_t m_messageType;

  uint8_t m_procedureCode;

  uint32_t m_lengthOfIes;

  uint32_t m_numberOfIes;

};

class EpcX2HandoverRequestHeader : public Header

{

public:

  EpcX2HandoverRequestHeader ();

  virtual ~EpcX2HandoverRequestHeader ();

  static TypeId GetTypeId (void);

  virtual TypeId GetInstanceTypeId (void) const;

  virtual uint32_t GetSerializedSize (void) const;

  virtual void Serialize (Buffer::Iterator start) const;

  virtual uint32_t Deserialize (Buffer::Iterator start);

  virtual void Print (std::ostream &os) const;

  uint16_t GetOldEnbUeX2apId () const;

  void SetOldEnbUeX2apId (uint16_t x2apId);

  uint16_t GetCause () const;

  void SetCause (uint16_t cause);

  uint16_t GetTargetCellId () const;

  void SetTargetCellId (uint16_t targetCellId);

  std::vector <EpcX2Sap::ErabToBeSetupItem> GetBearers () const;

  void SetBearers (std::vector <EpcX2Sap::ErabToBeSetupItem> bearers);

  uint64_t GetUeAggregateMaxBitRateDownlink () const;

  void SetUeAggregateMaxBitRateDownlink (uint64_t bitRate);

  uint64_t GetUeAggregateMaxBitRateUplink () const;

  void SetUeAggregateMaxBitRateUplink (uint64_t bitRate);

  uint32_t GetLengthOfIes () const;

  uint32_t GetNumberOfIes () const;

private:

  uint32_t          m_numberOfIes;

  uint32_t          m_headerLength;

  uint16_t          m_oldEnbUeX2apId;

  uint16_t          m_cause;

  uint16_t          m_targetCellId;

  uint64_t          m_ueAggregateMaxBitRateDownlink;

  uint64_t          m_ueAggregateMaxBitRateUplink;

  std::vector <EpcX2Sap::ErabToBeSetupItem> m_erabsToBeSetupList;

};

class EpcX2HandoverRequestAckHeader : public Header

{

public:

  EpcX2HandoverRequestAckHeader ();

  virtual ~EpcX2HandoverRequestAckHeader ();

  static TypeId GetTypeId (void);

  virtual TypeId GetInstanceTypeId (void) const;

  virtual uint32_t GetSerializedSize (void) const;

  virtual void Serialize (Buffer::Iterator start) const;

  virtual uint32_t Deserialize (Buffer::Iterator start);

  virtual void Print (std::ostream &os) const;

  uint16_t GetOldEnbUeX2apId () const;

  void SetOldEnbUeX2apId (uint16_t x2apId);

  uint16_t GetNewEnbUeX2apId () const;

  void SetNewEnbUeX2apId (uint16_t x2apId);

  std::vector <EpcX2Sap::ErabAdmittedItem> GetAdmittedBearers () const;

  void SetAdmittedBearers (std::vector <EpcX2Sap::ErabAdmittedItem> bearers);

  std::vector <EpcX2Sap::ErabNotAdmittedItem> GetNotAdmittedBearers () const;

  void SetNotAdmittedBearers (std::vector <EpcX2Sap::ErabNotAdmittedItem> bearers);

private:

  uint16_t          m_oldEnbUeX2apId;

  uint16_t          m_newEnbUeX2apId;

  std::vector <EpcX2Sap::ErabAdmittedItem>     m_erabsAdmittedList;

  std::vector <EpcX2Sap::ErabNotAdmittedItem>  m_erabsNotAdmittedList;

};

} // namespace ns3

#endif // EPC_X2_HEADER_H