/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (c) 2013-2014 Regents of the University of California.
 *
 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
 *
 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * ndn-cxx library 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 Lesser General Public License for more details.
 *
 * You should have received copies of the GNU General Public License and GNU Lesser
 * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
 */

#ifndef NDN_MANAGEMENT_NFD_COMMAND_OPTIONS_HPP
#define NDN_MANAGEMENT_NFD_COMMAND_OPTIONS_HPP

#include "../security/identity-certificate.hpp"

namespace ndn {
namespace nfd {

/** \ingroup management
 *  \brief contains options for ControlCommand execution
 *  \note This type is intentionally copyable
 */
class CommandOptions
{
public:
  CommandOptions();

  /** \return command timeout
   */
  const time::milliseconds&
  getTimeout() const
  {
    return m_timeout;
  }

  /** \brief sets command timeout
   *  \param timeout the new command timeout, must be positive
   *  \throw std::out_of_range if timeout is non-positive
   *  \return self
   */
  CommandOptions&
  setTimeout(const time::milliseconds& timeout);

  /** \return command prefix
   */
  const Name&
  getPrefix() const
  {
    return m_prefix;
  }

  /** \brief sets command prefix
   *  \return self
   */
  CommandOptions&
  setPrefix(const Name& prefix);

public: // signing parameters
  /** \brief indicates the selection of signing parameters
   */
  enum SigningParamsKind {
    /** \brief picks the default signing identity and certificate
     */
    SIGNING_PARAMS_DEFAULT,
    /** \brief picks the default certificate of a specific identity Name
     */
    SIGNING_PARAMS_IDENTITY,
    /** \brief picks a specific identity certificate
     */
    SIGNING_PARAMS_CERTIFICATE
  };

  /** \return selection of signing parameters
   */
  SigningParamsKind
  getSigningParamsKind() const
  {
    return m_signingParamsKind;
  }

  /** \return identity Name
   *  \pre getSigningParamsKind() == SIGNING_PARAMS_IDENTITY
   */
  const Name&
  getSigningIdentity() const
  {
    BOOST_ASSERT(m_signingParamsKind == SIGNING_PARAMS_IDENTITY);
    return m_identity;
  }

  /** \return certificate Name
   *  \pre getSigningParamsKind() == SIGNING_PARAMS_CERTIFICATE
   */
  const Name&
  getSigningCertificate() const
  {
    BOOST_ASSERT(m_signingParamsKind == SIGNING_PARAMS_CERTIFICATE);
    return m_identity;
  }

  /** \brief chooses to use default identity and certificate
   *  \post getSigningParamsKind() == SIGNING_PARAMS_DEFAULT
   *  \return self
   */
  CommandOptions&
  setSigningDefault()
  {
    m_signingParamsKind = SIGNING_PARAMS_DEFAULT;
    return *this;
  }

  /** \brief chooses to use a specific identity and its default certificate
   *  \post getSigningParamsKind() == SIGNING_PARAMS_IDENTITY
   *  \post getIdentityName() == identityName
   *  \return self
   */
  CommandOptions&
  setSigningIdentity(const Name& identityName);

  /** \brief chooses to use a specific identity certificate
   *  \param certificateName identity certificate Name
   *  \throw std::invalid_argument if certificateName is invalid
   *  \post getSigningParamsKind() == SIGNING_PARAMS_CERTIFICATE
   *  \post getIdentityCertificate() is a copy of certificate
   *  \return self
   */
  CommandOptions&
  setSigningCertificate(const Name& certificateName);

  /** \brief chooses to use a specific identity certificate
   *  \details This is equivalent to .setIdentityCertificate(certificate.getName())
   */
  CommandOptions&
  setSigningCertificate(const IdentityCertificate& certificate);

public:
  /** \brief gives the default command timeout: 10000ms
   */
  static const time::milliseconds DEFAULT_TIMEOUT;

  /** \brief gives the default command prefix: ndn:/localhost/nfd
   */
  static const Name DEFAULT_PREFIX;

private:
  time::milliseconds m_timeout;
  Name m_prefix;
  SigningParamsKind m_signingParamsKind;
  Name m_identity; // identityName or certificateName
};

} // namespace nfd
} // namespace ndn

#endif // NDN_MANAGEMENT_NFD_COMMAND_OPTIONS_HPP