/**
 * Orthanc - A Lightweight, RESTful DICOM Store
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 * Copyright (C) 2017-2018 Osimis S.A., Belgium
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * In addition, as a special exception, the copyright holders of this
 * program give permission to link the code of its release with the
 * OpenSSL project's "OpenSSL" library (or with modified versions of it
 * that use the same license as the "OpenSSL" library), and distribute
 * the linked executables. You must obey the GNU General Public License
 * in all respects for all of the code used other than "OpenSSL". If you
 * modify file(s) with this exception, you may extend this exception to
 * your version of the file(s), but you are not obligated to do so. If
 * you do not wish to do so, delete this exception statement from your
 * version. If you delete this exception statement from all source files
 * in the program, then also delete it here.
 * 
 * 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, see <http://www.gnu.org/licenses/>.
 **/


#pragma once

#include "../../Core/JobsEngine/SetOfInstancesJob.h"
#include "../../Core/DicomNetworking/DicomUserConnection.h"


namespace Orthanc
{
  class DicomModalityStoreJob : public SetOfInstancesJob
  {
  private:
    ServerContext&                      context_;
    std::string                         localAet_;
    RemoteModalityParameters            remote_;
    std::string                         moveOriginatorAet_;
    uint16_t                            moveOriginatorId_;
    std::auto_ptr<DicomUserConnection>  connection_;

    void OpenConnection()
    {
      if (connection_.get() == NULL)
      {
        connection_.reset(new DicomUserConnection);
        connection_->SetLocalApplicationEntityTitle(localAet_);
        connection_->SetRemoteModality(remote_);
      }
    }

  protected:
    virtual bool HandleInstance(const std::string& instance)
    {
      OpenConnection();

      LOG(INFO) << "Sending instance " << instance << " to modality \"" 
                << remote_.GetApplicationEntityTitle() << "\"";

      std::string dicom;
      context_.ReadDicom(dicom, instance);

      if (HasMoveOriginator())
      {
        connection_->Store(dicom, moveOriginatorAet_, moveOriginatorId_);
      }
      else
      {
        connection_->Store(dicom);
      }

      //boost::this_thread::sleep(boost::posix_time::milliseconds(500));

      return true;
    }
    
  public:
    DicomModalityStoreJob(ServerContext& context) :
      context_(context),
      localAet_("ORTHANC"),
      moveOriginatorId_(0)  // By default, not a C-MOVE
    {
    }

    const std::string& GetLocalAet() const
    {
      return localAet_;
    }

    void SetLocalAet(const std::string& aet)
    {
      if (IsStarted())
      {
        throw OrthancException(ErrorCode_BadSequenceOfCalls);
      }
      else
      {
        localAet_ = aet;
      }
    }

    const RemoteModalityParameters& GetRemoteModality() const
    {
      return remote_;
    }

    void SetRemoteModality(const RemoteModalityParameters& remote)
    {
      if (IsStarted())
      {
        throw OrthancException(ErrorCode_BadSequenceOfCalls);
      }
      else
      {
        remote_ = remote;
      }
    }

    bool HasMoveOriginator() const
    {
      return moveOriginatorId_ != 0;
    }
    
    const std::string& GetMoveOriginatorAet() const
    {
      if (HasMoveOriginator())
      {
        return moveOriginatorAet_;
      }
      else
      {
        throw OrthancException(ErrorCode_BadSequenceOfCalls);
      }
    }
    
    uint16_t GetMoveOriginatorId() const
    {
      if (HasMoveOriginator())
      {
        return moveOriginatorId_;
      }
      else
      {
        throw OrthancException(ErrorCode_BadSequenceOfCalls);
      }
    }

    void SetMoveOriginator(const std::string& aet,
                           int id)
    {
      if (IsStarted())
      {
        throw OrthancException(ErrorCode_BadSequenceOfCalls);
      }
      else if (id < 0 || 
               id >= 65536)
      {
        throw OrthancException(ErrorCode_ParameterOutOfRange);
      }
      else
      {
        moveOriginatorId_ = static_cast<uint16_t>(id);
        moveOriginatorAet_ = aet;
      }
    }

    virtual void ReleaseResources()   // For pausing jobs
    {
      connection_.reset(NULL);
    }

    virtual void GetJobType(std::string& target)
    {
      target = "DicomModalityStore";
    }

    virtual void GetPublicContent(Json::Value& value)
    {
      value["LocalAet"] = localAet_;
      value["RemoteAet"] = remote_.GetApplicationEntityTitle();

      if (HasMoveOriginator())
      {
        value["MoveOriginatorAET"] = GetMoveOriginatorAet();
        value["MoveOriginatorID"] = GetMoveOriginatorId();
      }

      value["InstancesCount"] = static_cast<uint32_t>(GetInstances().size());
      value["FailedInstancesCount"] = static_cast<uint32_t>(GetFailedInstances().size());
    }
  };
}