/**
 * Orthanc - A Lightweight, RESTful DICOM Store
 * Copyright (C) 2012-2015 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 "PrecompiledHeadersUnitTests.h"
#include "gtest/gtest.h"

#include "../Core/Uuid.h"
#include "../Core/OrthancException.h"
#include "../Core/DicomFormat/DicomMap.h"
#include "../Core/DicomFormat/DicomNullValue.h"
#include "../OrthancServer/FromDcmtkBridge.h"

#include <memory>

using namespace Orthanc;

TEST(DicomMap, MainTags)
{
  ASSERT_TRUE(DicomMap::IsMainDicomTag(DICOM_TAG_PATIENT_ID));
  ASSERT_TRUE(DicomMap::IsMainDicomTag(DICOM_TAG_PATIENT_ID, ResourceType_Patient));
  ASSERT_FALSE(DicomMap::IsMainDicomTag(DICOM_TAG_PATIENT_ID, ResourceType_Study));

  ASSERT_TRUE(DicomMap::IsMainDicomTag(DICOM_TAG_STUDY_INSTANCE_UID));
  ASSERT_TRUE(DicomMap::IsMainDicomTag(DICOM_TAG_ACCESSION_NUMBER));
  ASSERT_TRUE(DicomMap::IsMainDicomTag(DICOM_TAG_SERIES_INSTANCE_UID));
  ASSERT_TRUE(DicomMap::IsMainDicomTag(DICOM_TAG_SOP_INSTANCE_UID));

  std::set<DicomTag> s;
  DicomMap::GetMainDicomTags(s);
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_PATIENT_ID));
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_STUDY_INSTANCE_UID));
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_ACCESSION_NUMBER));
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_SERIES_INSTANCE_UID));
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_SOP_INSTANCE_UID));

  DicomMap::GetMainDicomTags(s, ResourceType_Patient);
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_PATIENT_ID));
  ASSERT_TRUE(s.end() == s.find(DICOM_TAG_STUDY_INSTANCE_UID));

  DicomMap::GetMainDicomTags(s, ResourceType_Study);
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_STUDY_INSTANCE_UID));
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_ACCESSION_NUMBER));
  ASSERT_TRUE(s.end() == s.find(DICOM_TAG_PATIENT_ID));

  DicomMap::GetMainDicomTags(s, ResourceType_Series);
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_SERIES_INSTANCE_UID));
  ASSERT_TRUE(s.end() == s.find(DICOM_TAG_PATIENT_ID));

  DicomMap::GetMainDicomTags(s, ResourceType_Instance);
  ASSERT_TRUE(s.end() != s.find(DICOM_TAG_SOP_INSTANCE_UID));
  ASSERT_TRUE(s.end() == s.find(DICOM_TAG_PATIENT_ID));
}


TEST(DicomMap, Tags)
{
  std::set<DicomTag> s;

  DicomMap m;
  m.GetTags(s);
  ASSERT_EQ(0u, s.size());

  ASSERT_FALSE(m.HasTag(DICOM_TAG_PATIENT_NAME));
  ASSERT_FALSE(m.HasTag(0x0010, 0x0010));
  m.SetValue(0x0010, 0x0010, "PatientName");
  ASSERT_TRUE(m.HasTag(DICOM_TAG_PATIENT_NAME));
  ASSERT_TRUE(m.HasTag(0x0010, 0x0010));

  m.GetTags(s);
  ASSERT_EQ(1u, s.size());
  ASSERT_EQ(DICOM_TAG_PATIENT_NAME, *s.begin());

  ASSERT_FALSE(m.HasTag(DICOM_TAG_PATIENT_ID));
  m.SetValue(DICOM_TAG_PATIENT_ID, "PatientID");
  ASSERT_TRUE(m.HasTag(0x0010, 0x0020));
  m.SetValue(DICOM_TAG_PATIENT_ID, "PatientID2");
  ASSERT_EQ("PatientID2", m.GetValue(0x0010, 0x0020).AsString());

  m.GetTags(s);
  ASSERT_EQ(2u, s.size());

  m.Remove(DICOM_TAG_PATIENT_ID);
  ASSERT_THROW(m.GetValue(0x0010, 0x0020), OrthancException);

  m.GetTags(s);
  ASSERT_EQ(1u, s.size());
  ASSERT_EQ(DICOM_TAG_PATIENT_NAME, *s.begin());

  std::auto_ptr<DicomMap> mm(m.Clone());
  ASSERT_EQ("PatientName", mm->GetValue(DICOM_TAG_PATIENT_NAME).AsString());  

  m.SetValue(DICOM_TAG_PATIENT_ID, "Hello");
  ASSERT_THROW(mm->GetValue(DICOM_TAG_PATIENT_ID), OrthancException);
  mm->CopyTagIfExists(m, DICOM_TAG_PATIENT_ID);
  ASSERT_EQ("Hello", mm->GetValue(DICOM_TAG_PATIENT_ID).AsString());  

  DicomNullValue v;
  ASSERT_TRUE(v.IsNull());
}


TEST(DicomMap, FindTemplates)
{
  DicomMap m;

  DicomMap::SetupFindPatientTemplate(m);
  ASSERT_TRUE(m.HasTag(DICOM_TAG_PATIENT_ID));

  DicomMap::SetupFindStudyTemplate(m);
  ASSERT_TRUE(m.HasTag(DICOM_TAG_STUDY_INSTANCE_UID));
  ASSERT_TRUE(m.HasTag(DICOM_TAG_ACCESSION_NUMBER));

  DicomMap::SetupFindSeriesTemplate(m);
  ASSERT_TRUE(m.HasTag(DICOM_TAG_SERIES_INSTANCE_UID));

  DicomMap::SetupFindInstanceTemplate(m);
  ASSERT_TRUE(m.HasTag(DICOM_TAG_SOP_INSTANCE_UID));
}




static void TestModule(ResourceType level,
                       DicomModule module)
{
  std::set<DicomTag> moduleTags, main;
  DicomTag::AddTagsForModule(moduleTags, module);
  DicomMap::GetMainDicomTags(main, level);
  
  // The main dicom tags are a subset of the module
  for (std::set<DicomTag>::const_iterator it = main.begin(); it != main.end(); ++it)
  {
    bool ok = moduleTags.find(*it) != moduleTags.end();

    // Exceptions for the Series level
    /*if ((//
          *it == DicomTag(0x, 0x) && 
          level == ResourceType_Series))
    {
      ok = true;
      }*/

    // Exceptions for the Instance level
    if ((/* Accession number, from Image module */
          *it == DicomTag(0x0020, 0x0012) && 
          level == ResourceType_Instance) ||
        (/* Image Index, from PET Image module */
          *it == DicomTag(0x0054, 0x1330) && 
          level == ResourceType_Instance) ||
        (/* Temporal Position Identifier, from MR Image module */
          *it == DicomTag(0x0020, 0x0100) && 
          level == ResourceType_Instance) ||
        (/* Number of Frames, from Multi-frame module attributes, related to Image IOD */
          *it == DicomTag(0x0028, 0x0008) && 
          level == ResourceType_Instance ))
    {
      ok = true;
    }

    if (!ok)
    {
      std::cout << it->Format() << ": " << FromDcmtkBridge::GetName(*it)
                << " not expected at level " << EnumerationToString(level) << std::endl;
    }

    EXPECT_TRUE(ok);
  }
}


TEST(DicomMap, Modules)
{
  TestModule(ResourceType_Patient, DicomModule_Patient);
  TestModule(ResourceType_Study, DicomModule_Study);
  //TestModule(ResourceType_Series, DicomModule_Series);   // TODO
  TestModule(ResourceType_Instance, DicomModule_Instance);
}