/**
 * Orthanc - A Lightweight, RESTful DICOM Store
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, 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/>.
 **/


#include "../PrecompiledHeadersServer.h"
#include "ModifyInstanceCommand.h"

#include "../../Core/Logging.h"

namespace Orthanc
{
  ModifyInstanceCommand::ModifyInstanceCommand(ServerContext& context,
                                               RequestOrigin origin,
                                               DicomModification* modification) :
    context_(context),
    origin_(origin),
    modification_(modification)
  {
    modification_->SetAllowManualIdentifiers(true);

    if (modification_->IsReplaced(DICOM_TAG_PATIENT_ID))
    {
      modification_->SetLevel(ResourceType_Patient);
    }
    else if (modification_->IsReplaced(DICOM_TAG_STUDY_INSTANCE_UID))
    {
      modification_->SetLevel(ResourceType_Study);
    }
    else if (modification_->IsReplaced(DICOM_TAG_SERIES_INSTANCE_UID))
    {
      modification_->SetLevel(ResourceType_Series);
    }
    else
    {
      modification_->SetLevel(ResourceType_Instance);
    }

    if (origin_ != RequestOrigin_Lua)
    {
      // TODO If issued from HTTP, "remoteIp" and "username" must be provided
      throw OrthancException(ErrorCode_NotImplemented);
    }
  }


  ModifyInstanceCommand::~ModifyInstanceCommand()
  {
    if (modification_)
    {
      delete modification_;
    }
  }


  bool ModifyInstanceCommand::Apply(ListOfStrings& outputs,
                                    const ListOfStrings& inputs)
  {
    for (ListOfStrings::const_iterator
           it = inputs.begin(); it != inputs.end(); ++it)
    {
      LOG(INFO) << "Modifying resource " << *it;

      try
      {
        std::auto_ptr<ParsedDicomFile> modified;

        {
          ServerContext::DicomCacheLocker lock(context_, *it);
          modified.reset(lock.GetDicom().Clone());
        }

        modification_->Apply(*modified);

        DicomInstanceToStore toStore;
        assert(origin_ == RequestOrigin_Lua);
        toStore.SetLuaOrigin();
        toStore.SetParsedDicomFile(*modified);
        // TODO other metadata
        toStore.AddMetadata(ResourceType_Instance, MetadataType_ModifiedFrom, *it);

        std::string modifiedId;
        context_.Store(modifiedId, toStore);

        // Only chain with other commands if this command succeeds
        outputs.push_back(modifiedId);
      }
      catch (OrthancException& e)
      {
        LOG(ERROR) << "Unable to modify instance " << *it << " in a Lua script: " << e.What();
      }
    }

    return true;
  }
}