/*=========================================================================

  Program: GDCM (Grassroots DICOM). A DICOM library

  Copyright (c) 2006-2011 Mathieu Malaterre
  All rights reserved.
  See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#include "gdcmFileStreamer.h"

#include "gdcmTesting.h"
#include "gdcmSystem.h"
#include "gdcmReader.h"
#include "gdcmDataSet.h"
#include "gdcmPrivateTag.h"
#include "gdcmFilename.h"

/*
 * Make sure pseudo-private element also works:
 */
int TestFileStream6(const char *filename, bool verbose = false)
{
  using namespace gdcm;
  if( verbose )
    std::cout << "Processing: " << filename << std::endl;

  // Create directory first:
  const char subdir[] = "TestFileStreamer6";
  std::string tmpdir = Testing::GetTempDirectory( subdir );
  if( !System::FileIsDirectory( tmpdir.c_str() ) )
    {
    System::MakeDirectory( tmpdir.c_str() );
    //return 1;
    }
  std::string outfilename = Testing::GetTempFilename( filename, subdir );
  if( verbose )
    std::cout << "Generating: " << outfilename << std::endl;

  gdcm::Filename fn( filename );
  const char *name = fn.GetName();
  // Special handling:
  bool checktemplate = false;
  if( strcmp(name, "DMCPACS_ExplicitImplicit_BogusIOP.dcm" ) == 0
    || strcmp(name, "ExplicitVRforPublicElementsImplicitVRforShadowElements.dcm") == 0
    || strcmp(name, "SIEMENS_MAGNETOM-12-MONO2-GDCM12-VRUN.dcm") == 0 
  )
    {
    checktemplate = true;
    }

  gdcm::FileStreamer fs;
  fs.SetTemplateFileName( filename );
  fs.CheckTemplateFileName( checktemplate );
  fs.SetOutputFileName( outfilename.c_str() );

  std::vector<char> vbuffer;
  vbuffer.resize( 8192 );
  const char *buffer = &vbuffer[0];
  const size_t len = vbuffer.size();
  Tag t( Tag(0x9,0x1010) );
  fs.StartDataElement( t );
  fs.AppendToDataElement( t, buffer, len );
  fs.StopDataElement( t );

  // Read back and check:
  gdcm::Reader r;
  r.SetFileName( outfilename.c_str() );
  if( !r.Read() )
    {
    std::cerr << "Failed to read: " << outfilename << std::endl;
    return 1;
    }

  gdcm::File & f = r.GetFile();
  gdcm::DataSet & ds = f.GetDataSet();

  if( !ds.FindDataElement( t ) )
    {
    return 1;
    }

  const gdcm::DataElement & de = ds.GetDataElement( t );
  const gdcm::ByteValue * bv = de.GetByteValue();
  if( !bv ) return 1;
  if( bv->GetLength() != 8192 ) return 1;

  const char *p = bv->GetPointer();
  const char *end = p + bv->GetLength();
  int res = 0;
  for( ; p != end; ++p )
    {
    res += *p;
    }
  if( res )
    {
    std::cerr << "Mismatch: " << outfilename << std::endl;
    }

  return res;
}

int TestFileStreamer6(int argc, char *argv[])
{
  if( argc == 2 )
    {
    const char *filename = argv[1];
    return TestFileStream6(filename, true);
    }

  // else
  gdcm::Trace::DebugOff();
  gdcm::Trace::WarningOff();
  gdcm::Trace::ErrorOff();
  int r = 0, i = 0;
  const char *filename;
  const char * const *filenames = gdcm::Testing::GetFileNames();
  while( (filename = filenames[i]) )
    {
    r += TestFileStream6( filename );
    ++i;
    }

  return r;
}