/**
 * Orthanc - A Lightweight, RESTful DICOM Store
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 * Copyright (C) 2017-2019 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/>.
 **/


#include "PrecompiledHeadersUnitTests.h"
#include "gtest/gtest.h"

#include "../Core/OrthancException.h"
#include "../Core/DicomFormat/DicomMap.h"
#include "../Core/DicomParsing/FromDcmtkBridge.h"
#include "../Core/DicomParsing/ParsedDicomFile.h"

#include "../OrthancServer/DicomInstanceToStore.h"

#include <memory>
#include <dcmtk/dcmdata/dcdeftag.h>

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", false);
  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", false);
  ASSERT_TRUE(m.HasTag(0x0010, 0x0020));
  m.SetValue(DICOM_TAG_PATIENT_ID, "PatientID2", false);
  ASSERT_EQ("PatientID2", m.GetValue(0x0010, 0x0020).GetContent());

  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).GetContent());  

  m.SetValue(DICOM_TAG_PATIENT_ID, "Hello", false);
  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).GetContent());  

  DicomValue 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)
{
  // REFERENCE: DICOM PS3.3 2015c - Information Object Definitions
  // http://dicom.nema.org/medical/dicom/current/output/html/part03.html

  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 Study level
    if (level == ResourceType_Study &&
        (*it == DicomTag(0x0008, 0x0080) ||  /* InstitutionName, from Visit identification module, related to Visit */
         *it == DicomTag(0x0032, 0x1032) ||  /* RequestingPhysician, from Imaging Service Request module, related to Study */
         *it == DicomTag(0x0032, 0x1060)))   /* RequestedProcedureDescription, from Requested Procedure module, related to Study */
    {
      ok = true;
    }

    // Exceptions for the Series level
    if (level == ResourceType_Series &&
        (*it == DicomTag(0x0008, 0x0070) ||  /* Manufacturer, from General Equipment Module */
         *it == DicomTag(0x0008, 0x1010) ||  /* StationName, from General Equipment Module */
         *it == DicomTag(0x0018, 0x0024) ||  /* SequenceName, from MR Image Module (SIMPLIFICATION => Series) */
         *it == DicomTag(0x0018, 0x1090) ||  /* CardiacNumberOfImages, from MR Image Module (SIMPLIFICATION => Series) */
         *it == DicomTag(0x0020, 0x0037) ||  /* ImageOrientationPatient, from Image Plane Module (SIMPLIFICATION => Series) */
         *it == DicomTag(0x0020, 0x0105) ||  /* NumberOfTemporalPositions, from MR Image Module (SIMPLIFICATION => Series) */
         *it == DicomTag(0x0020, 0x1002) ||  /* ImagesInAcquisition, from General Image Module (SIMPLIFICATION => Series) */
         *it == DicomTag(0x0054, 0x0081) ||  /* NumberOfSlices, from PET Series module */
         *it == DicomTag(0x0054, 0x0101) ||  /* NumberOfTimeSlices, from PET Series module */
         *it == DicomTag(0x0054, 0x1000) ||  /* SeriesType, from PET Series module */
         *it == DicomTag(0x0018, 0x1400) ||  /* AcquisitionDeviceProcessingDescription, from CR/X-Ray/DX/WholeSlideMicro Image (SIMPLIFICATION => Series) */
         *it == DicomTag(0x0018, 0x0010)))   /* ContrastBolusAgent, from Contrast/Bolus module (SIMPLIFICATION => Series) */
    {
      ok = true;
    }

    // Exceptions for the Instance level
    if (level == ResourceType_Instance &&
        (*it == DicomTag(0x0020, 0x0012) ||  /* AccessionNumber, from General Image module */
         *it == DicomTag(0x0054, 0x1330) ||  /* ImageIndex, from PET Image module */
         *it == DicomTag(0x0020, 0x0100) ||  /* TemporalPositionIdentifier, from MR Image module */
         *it == DicomTag(0x0028, 0x0008) ||  /* NumberOfFrames, from Multi-frame module attributes, related to Image */
         *it == DicomTag(0x0020, 0x0032) ||  /* ImagePositionPatient, from Image Plan module, related to Image */
         *it == DicomTag(0x0020, 0x0037) ||  /* ImageOrientationPatient, from Image Plane Module (Orthanc 1.4.2) */
         *it == DicomTag(0x0020, 0x4000)))   /* ImageComments, from General Image module */
    {
      ok = true;
    }

    if (!ok)
    {
      std::cout << it->Format() << ": " << FromDcmtkBridge::GetTagName(*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);
}


TEST(DicomMap, Parse)
{
  DicomMap m;
  float f;
  double d;
  int32_t i;
  int64_t j;
  uint32_t k;
  uint64_t l;
  std::string s;
  
  m.SetValue(DICOM_TAG_PATIENT_NAME, "      ", false);  // Empty value
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseFloat(f));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseDouble(d));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger32(i));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger64(j));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger32(k));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger64(l));
  
  m.SetValue(DICOM_TAG_PATIENT_NAME, "0", true);  // Binary value
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseFloat(f));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseDouble(d));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger32(i));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger64(j));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger32(k));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger64(l));

  ASSERT_FALSE(m.CopyToString(s, DICOM_TAG_PATIENT_NAME, false));
  ASSERT_TRUE(m.CopyToString(s, DICOM_TAG_PATIENT_NAME, true));
  ASSERT_EQ("0", s);
               

  // 2**31-1
  m.SetValue(DICOM_TAG_PATIENT_NAME, "2147483647", false);
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseFloat(f));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseDouble(d));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger32(i));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger64(j));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger32(k));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger64(l));
  ASSERT_FLOAT_EQ(2147483647.0f, f);
  ASSERT_DOUBLE_EQ(2147483647.0, d);
  ASSERT_EQ(2147483647, i);
  ASSERT_EQ(2147483647ll, j);
  ASSERT_EQ(2147483647u, k);
  ASSERT_EQ(2147483647ull, l);

  // Test shortcuts
  m.SetValue(DICOM_TAG_PATIENT_NAME, "42", false);
  ASSERT_TRUE(m.ParseFloat(f, DICOM_TAG_PATIENT_NAME));
  ASSERT_TRUE(m.ParseDouble(d, DICOM_TAG_PATIENT_NAME));
  ASSERT_TRUE(m.ParseInteger32(i, DICOM_TAG_PATIENT_NAME));
  ASSERT_TRUE(m.ParseInteger64(j, DICOM_TAG_PATIENT_NAME));
  ASSERT_TRUE(m.ParseUnsignedInteger32(k, DICOM_TAG_PATIENT_NAME));
  ASSERT_TRUE(m.ParseUnsignedInteger64(l, DICOM_TAG_PATIENT_NAME));
  ASSERT_FLOAT_EQ(42.0f, f);
  ASSERT_DOUBLE_EQ(42.0, d);
  ASSERT_EQ(42, i);
  ASSERT_EQ(42ll, j);
  ASSERT_EQ(42u, k);
  ASSERT_EQ(42ull, l);

  ASSERT_TRUE(m.CopyToString(s, DICOM_TAG_PATIENT_NAME, false));
  ASSERT_EQ("42", s);
  ASSERT_TRUE(m.CopyToString(s, DICOM_TAG_PATIENT_NAME, true));
  ASSERT_EQ("42", s);
               
  
  // 2**31
  m.SetValue(DICOM_TAG_PATIENT_NAME, "2147483648", false);
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseFloat(f));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseDouble(d));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger32(i));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger64(j));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger32(k));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger64(l));
  ASSERT_FLOAT_EQ(2147483648.0f, f);
  ASSERT_DOUBLE_EQ(2147483648.0, d);
  ASSERT_EQ(2147483648ll, j);
  ASSERT_EQ(2147483648u, k);
  ASSERT_EQ(2147483648ull, l);

  // 2**32-1
  m.SetValue(DICOM_TAG_PATIENT_NAME, "4294967295", false);
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseFloat(f));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseDouble(d));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger32(i));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger64(j));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger32(k));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger64(l));
  ASSERT_FLOAT_EQ(4294967295.0f, f);
  ASSERT_DOUBLE_EQ(4294967295.0, d);
  ASSERT_EQ(4294967295ll, j);
  ASSERT_EQ(4294967295u, k);
  ASSERT_EQ(4294967295ull, l);
  
  // 2**32
  m.SetValue(DICOM_TAG_PATIENT_NAME, "4294967296", false);
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseFloat(f));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseDouble(d));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger32(i));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger64(j));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger32(k));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger64(l));
  ASSERT_FLOAT_EQ(4294967296.0f, f);
  ASSERT_DOUBLE_EQ(4294967296.0, d);
  ASSERT_EQ(4294967296ll, j);
  ASSERT_EQ(4294967296ull, l);
  
  m.SetValue(DICOM_TAG_PATIENT_NAME, "-1", false);
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseFloat(f));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseDouble(d));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger32(i));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger64(j));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger32(k));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger64(l));
  ASSERT_FLOAT_EQ(-1.0f, f);
  ASSERT_DOUBLE_EQ(-1.0, d);
  ASSERT_EQ(-1, i);
  ASSERT_EQ(-1ll, j);

  // -2**31
  m.SetValue(DICOM_TAG_PATIENT_NAME, "-2147483648", false);
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseFloat(f));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseDouble(d));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger32(i));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger64(j));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger32(k));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger64(l));
  ASSERT_FLOAT_EQ(-2147483648.0f, f);
  ASSERT_DOUBLE_EQ(-2147483648.0, d);
  ASSERT_EQ(static_cast<int32_t>(-2147483648ll), i);
  ASSERT_EQ(-2147483648ll, j);
  
  // -2**31 - 1
  m.SetValue(DICOM_TAG_PATIENT_NAME, "-2147483649", false);
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseFloat(f));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseDouble(d));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger32(i));
  ASSERT_TRUE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseInteger64(j));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger32(k));
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).ParseUnsignedInteger64(l));
  ASSERT_FLOAT_EQ(-2147483649.0f, f);
  ASSERT_DOUBLE_EQ(-2147483649.0, d); 
  ASSERT_EQ(-2147483649ll, j);
}


TEST(DicomMap, Serialize)
{
  Json::Value s;
  
  {
    DicomMap m;
    m.SetValue(DICOM_TAG_PATIENT_NAME, "Hello", false);
    m.SetValue(DICOM_TAG_STUDY_DESCRIPTION, "Binary", true);
    m.SetNullValue(DICOM_TAG_SERIES_DESCRIPTION);
    m.Serialize(s);
  }

  {
    DicomMap m;
    m.Unserialize(s);

    const DicomValue* v = m.TestAndGetValue(DICOM_TAG_ACCESSION_NUMBER);
    ASSERT_TRUE(v == NULL);

    v = m.TestAndGetValue(DICOM_TAG_PATIENT_NAME);
    ASSERT_TRUE(v != NULL);
    ASSERT_FALSE(v->IsNull());
    ASSERT_FALSE(v->IsBinary());
    ASSERT_EQ("Hello", v->GetContent());

    v = m.TestAndGetValue(DICOM_TAG_STUDY_DESCRIPTION);
    ASSERT_TRUE(v != NULL);
    ASSERT_FALSE(v->IsNull());
    ASSERT_TRUE(v->IsBinary());
    ASSERT_EQ("Binary", v->GetContent());

    v = m.TestAndGetValue(DICOM_TAG_SERIES_DESCRIPTION);
    ASSERT_TRUE(v != NULL);
    ASSERT_TRUE(v->IsNull());
    ASSERT_FALSE(v->IsBinary());
    ASSERT_THROW(v->GetContent(), OrthancException);
  }
}



TEST(DicomMap, DicomAsJson)
{
  // This is a Latin-1 test string: "crane" with a circumflex accent
  const unsigned char raw[] = { 0x63, 0x72, 0xe2, 0x6e, 0x65 };
  std::string latin1((char*) &raw[0], sizeof(raw) / sizeof(char));

  std::string utf8 = Toolbox::ConvertToUtf8(latin1, Encoding_Latin1);

  ParsedDicomFile dicom(false);
  dicom.SetEncoding(Encoding_Latin1);
  dicom.ReplacePlainString(DICOM_TAG_PATIENT_NAME, "Hello");
  dicom.ReplacePlainString(DICOM_TAG_STUDY_DESCRIPTION, utf8);
  dicom.ReplacePlainString(DICOM_TAG_SERIES_DESCRIPTION, std::string(ORTHANC_MAXIMUM_TAG_LENGTH, 'a'));
  dicom.ReplacePlainString(DICOM_TAG_MANUFACTURER, std::string(ORTHANC_MAXIMUM_TAG_LENGTH + 1, 'a'));
  dicom.ReplacePlainString(DICOM_TAG_PIXEL_DATA, "binary");
  dicom.ReplacePlainString(DICOM_TAG_ROWS, "512");

  DcmDataset& dataset = *dicom.GetDcmtkObject().getDataset();
  dataset.insertEmptyElement(DCM_StudyID, OFFalse);

  {
    std::auto_ptr<DcmSequenceOfItems> sequence(new DcmSequenceOfItems(DCM_ReferencedSeriesSequence));

    {
      std::auto_ptr<DcmItem> item(new DcmItem);
      item->putAndInsertString(DCM_ReferencedSOPInstanceUID, "nope", OFFalse);
      ASSERT_TRUE(sequence->insert(item.release(), false, false).good());
    }

    ASSERT_TRUE(dataset.insert(sequence.release(), false, false).good());
  }
  
                          
  // Check re-encoding
  DcmElement* element = NULL;
  ASSERT_TRUE(dataset.findAndGetElement(DCM_StudyDescription, element).good() &&
              element != NULL);

  char* c = NULL;
  ASSERT_TRUE(element != NULL &&
              element->isLeaf() &&
              element->isaString() &&
              element->getString(c).good());
  ASSERT_EQ(0, memcmp(c, raw, latin1.length()));

  ASSERT_TRUE(dataset.findAndGetElement(DCM_Rows, element).good() &&
              element != NULL &&
              element->getTag().getEVR() == EVR_US);

  DicomInstanceToStore toStore;
  toStore.SetParsedDicomFile(dicom);

  DicomMap m;
  m.FromDicomAsJson(toStore.GetJson());

  ASSERT_EQ("ISO_IR 100", m.GetValue(DICOM_TAG_SPECIFIC_CHARACTER_SET).GetContent());
  
  ASSERT_FALSE(m.GetValue(DICOM_TAG_PATIENT_NAME).IsBinary());
  ASSERT_EQ("Hello", m.GetValue(DICOM_TAG_PATIENT_NAME).GetContent());
  
  ASSERT_FALSE(m.GetValue(DICOM_TAG_STUDY_DESCRIPTION).IsBinary());
  ASSERT_EQ(utf8, m.GetValue(DICOM_TAG_STUDY_DESCRIPTION).GetContent());

  ASSERT_FALSE(m.HasTag(DICOM_TAG_MANUFACTURER));                // Too long
  ASSERT_FALSE(m.HasTag(DICOM_TAG_PIXEL_DATA));                  // Pixel data
  ASSERT_FALSE(m.HasTag(DICOM_TAG_REFERENCED_SERIES_SEQUENCE));  // Sequence
  ASSERT_EQ(DICOM_TAG_REFERENCED_SERIES_SEQUENCE.GetGroup(), DCM_ReferencedSeriesSequence.getGroup());
  ASSERT_EQ(DICOM_TAG_REFERENCED_SERIES_SEQUENCE.GetElement(), DCM_ReferencedSeriesSequence.getElement());

  ASSERT_TRUE(m.HasTag(DICOM_TAG_SERIES_DESCRIPTION));  // Maximum length
  ASSERT_FALSE(m.GetValue(DICOM_TAG_SERIES_DESCRIPTION).IsBinary());
  ASSERT_EQ(ORTHANC_MAXIMUM_TAG_LENGTH,
            static_cast<int>(m.GetValue(DICOM_TAG_SERIES_DESCRIPTION).GetContent().length()));

  ASSERT_FALSE(m.GetValue(DICOM_TAG_ROWS).IsBinary());
  ASSERT_EQ("512", m.GetValue(DICOM_TAG_ROWS).GetContent());

  ASSERT_FALSE(m.GetValue(DICOM_TAG_STUDY_ID).IsNull());
  ASSERT_FALSE(m.GetValue(DICOM_TAG_STUDY_ID).IsBinary());
  ASSERT_EQ("", m.GetValue(DICOM_TAG_STUDY_ID).GetContent());

  DicomArray a(m);
  ASSERT_EQ(6u, a.GetSize());

  
  //dicom.SaveToFile("/tmp/test.dcm"); 
  //std::cout << toStore.GetJson() << std::endl;
  //a.Print(stdout);
}



TEST(DicomMap, ExtractMainDicomTags)
{
  DicomMap b;
  b.SetValue(DICOM_TAG_PATIENT_NAME, "E", false);
  ASSERT_TRUE(b.HasOnlyMainDicomTags());

  {
    DicomMap a;
    a.SetValue(DICOM_TAG_PATIENT_NAME, "A", false);
    a.SetValue(DICOM_TAG_STUDY_DESCRIPTION, "B", false);
    a.SetValue(DICOM_TAG_SERIES_DESCRIPTION, "C", false);
    a.SetValue(DICOM_TAG_NUMBER_OF_FRAMES, "D", false);
    a.SetValue(DICOM_TAG_SLICE_THICKNESS, "F", false);
    ASSERT_FALSE(a.HasOnlyMainDicomTags());
    b.ExtractMainDicomTags(a);
  }

  ASSERT_EQ(4u, b.GetSize());
  ASSERT_EQ("A", b.GetValue(DICOM_TAG_PATIENT_NAME).GetContent());
  ASSERT_EQ("B", b.GetValue(DICOM_TAG_STUDY_DESCRIPTION).GetContent());
  ASSERT_EQ("C", b.GetValue(DICOM_TAG_SERIES_DESCRIPTION).GetContent());
  ASSERT_EQ("D", b.GetValue(DICOM_TAG_NUMBER_OF_FRAMES).GetContent());
  ASSERT_FALSE(b.HasTag(DICOM_TAG_SLICE_THICKNESS));
  ASSERT_TRUE(b.HasOnlyMainDicomTags());

  b.SetValue(DICOM_TAG_PATIENT_NAME, "G", false);

  {
    DicomMap a;
    a.SetValue(DICOM_TAG_PATIENT_NAME, "A", false);
    a.SetValue(DICOM_TAG_SLICE_THICKNESS, "F", false);
    ASSERT_FALSE(a.HasOnlyMainDicomTags());
    b.Merge(a);
  }

  ASSERT_EQ(5u, b.GetSize());
  ASSERT_EQ("G", b.GetValue(DICOM_TAG_PATIENT_NAME).GetContent());
  ASSERT_EQ("B", b.GetValue(DICOM_TAG_STUDY_DESCRIPTION).GetContent());
  ASSERT_EQ("C", b.GetValue(DICOM_TAG_SERIES_DESCRIPTION).GetContent());
  ASSERT_EQ("D", b.GetValue(DICOM_TAG_NUMBER_OF_FRAMES).GetContent());
  ASSERT_EQ("F", b.GetValue(DICOM_TAG_SLICE_THICKNESS).GetContent());
  ASSERT_FALSE(b.HasOnlyMainDicomTags());
}




#if 0

#include <boost/math/special_functions/round.hpp>

namespace Orthanc
{
  class DicomJsonVisitor : public ITagVisitor
  {
  private:
    Json::Value  result_;
    std::string  bulkUriRoot_;

    static std::string FormatTag(const DicomTag& tag)
    {
      char buf[16];
      sprintf(buf, "%04X%04X", tag.GetGroup(), tag.GetElement());
      return std::string(buf);
    }
    
    Json::Value& CreateNode(const std::vector<DicomTag>& parentTags,
                            const std::vector<size_t>& parentIndexes,
                            const DicomTag& tag)
    {
      assert(parentTags.size() == parentIndexes.size());      

      Json::Value* node = &result_;

      for (size_t i = 0; i < parentTags.size(); i++)
      {
        std::string t = FormatTag(parentTags[i]);

        if (!node->isMember(t))
        {
          Json::Value item = Json::objectValue;
          item["vr"] = "SQ";
          item["Value"] = Json::arrayValue;
          item["Value"].append(Json::objectValue);
          (*node) [t] = item;

          node = &(*node)[t]["Value"][0];
        }
        else if ((*node)  [t].type() != Json::objectValue ||
                 !(*node) [t].isMember("vr") ||
                 (*node)  [t]["vr"].type() != Json::stringValue ||
                 (*node)  [t]["vr"].asString() != "SQ" ||
                 !(*node) [t].isMember("Value") ||
                 (*node)  [t]["Value"].type() != Json::arrayValue)
        {
          throw OrthancException(ErrorCode_InternalError);
        }
        else
        {
          size_t currentSize = (*node) [t]["Value"].size();

          if (parentIndexes[i] < currentSize)
          {
            // The node already exists
          }
          else if (parentIndexes[i] == currentSize)
          {
            (*node) [t]["Value"].append(Json::objectValue);
          }
          else
          {
            throw OrthancException(ErrorCode_InternalError);
          }
          
          node = &(*node) [t]["Value"][Json::ArrayIndex(parentIndexes[i])];
        }
      }

      assert(node->type() == Json::objectValue);

      std::string t = FormatTag(tag);
      if (node->isMember(t))
      {
        throw OrthancException(ErrorCode_InternalError);
      }
      else
      {
        (*node) [t] = Json::objectValue;
        return (*node) [t];
      }
    }

    static Json::Value FormatInteger(int64_t value)
    {
      if (value < 0)
      {
        return Json::Value(static_cast<int32_t>(value));
      }
      else
      {
        return Json::Value(static_cast<uint32_t>(value));
      }
    }

    static Json::Value FormatDouble(double value)
    {
      long long a = boost::math::llround<double>(value);

      double d = fabs(value - static_cast<double>(a));

      if (d <= std::numeric_limits<double>::epsilon() * 100.0)
      {
        return FormatInteger(a);
      }
      else
      {
        return Json::Value(value);
      }
    }

  public:
    DicomJsonVisitor()
    {
      Clear();
    }

    void SetBulkUriRoot(const std::string& root)
    {
      bulkUriRoot_ = root;
    }
    
    void Clear()
    {
      result_ = Json::objectValue;
    }

    const Json::Value& GetResult() const
    {
      return result_;
    }

    virtual void VisitUnknown(const std::vector<DicomTag>& parentTags,
                              const std::vector<size_t>& parentIndexes,
                              const DicomTag& tag,
                              ValueRepresentation vr) ORTHANC_OVERRIDE
    {
      Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
      node["vr"] = EnumerationToString(vr);
    }

    virtual void VisitBinary(const std::vector<DicomTag>& parentTags,
                             const std::vector<size_t>& parentIndexes,
                             const DicomTag& tag,
                             ValueRepresentation vr,
                             const void* data,
                             size_t size) ORTHANC_OVERRIDE
    {
      if (vr != ValueRepresentation_NotSupported &&
          !bulkUriRoot_.empty())
      {
        Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
        node["vr"] = EnumerationToString(vr);
      }
    }

    virtual void VisitIntegers(const std::vector<DicomTag>& parentTags,
                               const std::vector<size_t>& parentIndexes,
                               const DicomTag& tag,
                               ValueRepresentation vr,
                               const std::vector<int64_t>& values) ORTHANC_OVERRIDE
    {
      if (vr != ValueRepresentation_NotSupported)
      {
        Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
        node["vr"] = EnumerationToString(vr);

        Json::Value content = Json::arrayValue;
        for (size_t i = 0; i < values.size(); i++)
        {
          content.append(FormatInteger(values[i]));
        }

        node["Value"] = content;
      }
    }

    virtual void VisitDoubles(const std::vector<DicomTag>& parentTags,
                              const std::vector<size_t>& parentIndexes,
                              const DicomTag& tag,
                              ValueRepresentation vr,
                              const std::vector<double>& values) ORTHANC_OVERRIDE
    {
      if (vr != ValueRepresentation_NotSupported)
      {
        Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
        node["vr"] = EnumerationToString(vr);

        Json::Value content = Json::arrayValue;
        for (size_t i = 0; i < values.size(); i++)
        {
          content.append(FormatDouble(values[i]));
        }
        node["Value"] = content;
      }
    }

    virtual void VisitAttributes(const std::vector<DicomTag>& parentTags,
                                 const std::vector<size_t>& parentIndexes,
                                 const DicomTag& tag,
                                 ValueRepresentation vr,
                                 const std::vector<DicomTag>& values) ORTHANC_OVERRIDE
    {
      if (vr != ValueRepresentation_NotSupported)
      {
        Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
        node["vr"] = EnumerationToString(vr);

        
      }
    }

    virtual Action VisitString(std::string& newValue,
                               const std::vector<DicomTag>& parentTags,
                               const std::vector<size_t>& parentIndexes,
                               const DicomTag& tag,
                               ValueRepresentation vr,
                               const std::string& value) ORTHANC_OVERRIDE
    {
      if (vr != ValueRepresentation_NotSupported)
      {
        Json::Value& node = CreateNode(parentTags, parentIndexes, tag);
        node["vr"] = EnumerationToString(vr);

        std::vector<std::string> tokens;
        Toolbox::TokenizeString(tokens, value, '\\');

        node["Value"] = Json::arrayValue;
        for (size_t i = 0; i < tokens.size(); i++)
        {
          try
          {
            switch (vr)
            {
              case ValueRepresentation_PersonName:
              {
                Json::Value value = Json::objectValue;
                value["Alphabetic"] = tokens[i];
                node["Value"].append(value);
                break;
              }
                  
              case ValueRepresentation_IntegerString:
              {
                int64_t value = boost::lexical_cast<int64_t>(tokens[i]);
                node["Value"].append(FormatInteger(value));
                break;
              }
              
              case ValueRepresentation_DecimalString:
              {
                double value = boost::lexical_cast<double>(tokens[i]);
                node["Value"].append(FormatDouble(value));
                break;
              }
              
              default:
              {
                size_t l = tokens[i].size();

                if (l > 0 &&
                    tokens[i][l - 1] == '\0')
                {
                  tokens[i] = tokens[i].substr(0, l - 1);
                }

                node["Value"].append(tokens[i]);
                break;
              }
            }
          }
          catch (boost::bad_lexical_cast&)
          {
            throw OrthancException(ErrorCode_BadFileFormat);
          }
        }
      }
      
      return Action_None;
    }
  };
}

#include "../Core/SystemToolbox.h"


/* 

cat << EOF > /tmp/tutu.py
import json
import sys
j = json.loads(sys.stdin.read().decode("utf-8-sig"))
print(json.dumps(j, indent=4, sort_keys=True, ensure_ascii=False).encode('utf-8'))
EOF

DCMDICTPATH=/home/jodogne/Downloads/dcmtk-3.6.2/dcmdata/data/dicom.dic /home/jodogne/Downloads/dcmtk-3.6.2/i/bin/dcm2json ~/Subversion/orthanc-tests/Database/DummyCT.dcm | tr -d '\0' | sed 's/\\u0000//g' | sed 's/\.0$//' | python /tmp/tutu.py | grep -v 'InlineBinary' > /tmp/a.json

make -j4 && ./UnitTests --gtest_filter=DicomWeb* && python /tmp/tutu.py < /tmp/tutu.json > /tmp/b.json && diff -i /tmp/a.json /tmp/b.json

*/

TEST(DicomWebJson, Basic)
{
  std::string content;
  Orthanc::SystemToolbox::ReadFile(content, "/home/jodogne/Subversion/orthanc-tests/Database/DummyCT.dcm");

  Orthanc::ParsedDicomFile dicom(content);

  Orthanc::DicomJsonVisitor visitor;
  dicom.Apply(visitor);

  Orthanc::SystemToolbox::WriteFile(visitor.GetResult().toStyledString(), "/tmp/tutu.json");
}

#endif