/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
/**
 * Copyright (C) 2013 Regents of the University of California.
 * @author: Jeff Thompson <jefft0@remap.ucla.edu>
 * See COPYING for copyright and distribution information.
 */

#include <iostream>
#include <time.h>
#include <sys/time.h>
#include <stdexcept>
#include <ndn-cpp/data.hpp>
// Hack: Hook directly into non-API functions.
#include "../src/c/encoding/binary-xml-decoder.h"
#include "../src/c/data.h"
#include "../src/c/encoding/binary-xml-data.h"

using namespace std;
using namespace ndn;
using namespace ndn::ptr_lib;

static double
getNowSeconds()
{
  struct timeval t;
  gettimeofday(&t, 0);
  return t.tv_sec + t.tv_usec / 1000000.0;
}

uint8_t Data1[] = {
0x04, 0x82, // NDN Data
  0x02, 0xaa, // Signature
    0x03, 0xb2, // SignatureBits
      0x08, 0x85, 0x20, 0xea, 0xb5, 0xb0, 0x63, 0xda, 0x94, 0xe9, 0x68, 0x7a,
      0x8e, 0x65, 0x60, 0xe0, 0xc6, 0x43, 0x96, 0xd9, 0x69, 0xb4, 0x40, 0x72, 0x52, 0x00, 0x2c, 0x8e, 0x2a, 0xf5,
      0x47, 0x12, 0x59, 0x93, 0xda, 0xed, 0x82, 0xd0, 0xf8, 0xe6, 0x65, 0x09, 0x87, 0x84, 0x54, 0xc7, 0xce, 0x9a,
      0x93, 0x0d, 0x47, 0xf1, 0xf9, 0x3b, 0x98, 0x78, 0x2c, 0x22, 0x21, 0xd9, 0x2b, 0xda, 0x03, 0x30, 0x84, 0xf3,
      0xc5, 0x52, 0x64, 0x2b, 0x1d, 0xde, 0x50, 0xe0, 0xee, 0xca, 0xa2, 0x73, 0x7a, 0x93, 0x30, 0xa8, 0x47, 0x7f,
      0x6f, 0x41, 0xb0, 0xc8, 0x6e, 0x89, 0x1c, 0xcc, 0xf9, 0x01, 0x44, 0xc3, 0x08, 0xcf, 0x77, 0x47, 0xfc, 0xed,
      0x48, 0xf0, 0x4c, 0xe9, 0xc2, 0x3b, 0x7d, 0xef, 0x6e, 0xa4, 0x80, 0x40, 0x9e, 0x43, 0xb6, 0x77, 0x7a, 0x1d,
      0x51, 0xed, 0x98, 0x33, 0x93, 0xdd, 0x88, 0x01, 0x0e, 0xd3, 
    0x00, 
  0x00, 
  0xf2, 0xfa, 0x9d, 0x6e, 0x64, 0x6e, 0x00, 0xfa, 0x9d, 0x61, 0x62, 0x63, 0x00, 0x00,  // Name
  0x01, 0xa2, // SignedInfo
    0x03, 0xe2, // PublisherPublicKeyDigest
      0x02, 0x85, 0xb5, 0x50, 0x6b, 0x1a,
      0xba, 0x3d, 0xa7, 0x76, 0x1b, 0x0f, 0x8d, 0x61, 0xa4, 0xaa, 0x7e, 0x3b, 0x6d, 0x15, 0xb4, 0x26, 0xfe, 0xb5,
      0xbd, 0xa8, 0x23, 0x89, 0xac, 0xa7, 0x65, 0xa3, 0xb8, 0x1c, 
    0x00, 
    0x02, 0xba, // Timestamp
      0xb5, 0x05, 0x1d, 0xde, 0xe9, 0x5b, 0xdb, 
    0x00, 
    0x01, 0xe2, // KeyLocator
      0x01, 0xda, // Key
        0x0a, 0x95, 0x30, 0x81, 0x9f, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86,
        0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x81, 0x8d, 0x00, 0x30, 0x81, 0x89, 0x02, 0x81,
        0x81, 0x00, 0xe1, 0x7d, 0x30, 0xa7, 0xd8, 0x28, 0xab, 0x1b, 0x84, 0x0b, 0x17, 0x54, 0x2d, 0xca, 0xf6, 0x20,
        0x7a, 0xfd, 0x22, 0x1e, 0x08, 0x6b, 0x2a, 0x60, 0xd1, 0x6c, 0xb7, 0xf5, 0x44, 0x48, 0xba, 0x9f, 0x3f, 0x08,
        0xbc, 0xd0, 0x99, 0xdb, 0x21, 0xdd, 0x16, 0x2a, 0x77, 0x9e, 0x61, 0xaa, 0x89, 0xee, 0xe5, 0x54, 0xd3, 0xa4,
        0x7d, 0xe2, 0x30, 0xbc, 0x7a, 0xc5, 0x90, 0xd5, 0x24, 0x06, 0x7c, 0x38, 0x98, 0xbb, 0xa6, 0xf5, 0xdc, 0x43,
        0x60, 0xb8, 0x45, 0xed, 0xa4, 0x8c, 0xbd, 0x9c, 0xf1, 0x26, 0xa7, 0x23, 0x44, 0x5f, 0x0e, 0x19, 0x52, 0xd7,
        0x32, 0x5a, 0x75, 0xfa, 0xf5, 0x56, 0x14, 0x4f, 0x9a, 0x98, 0xaf, 0x71, 0x86, 0xb0, 0x27, 0x86, 0x85, 0xb8,
        0xe2, 0xc0, 0x8b, 0xea, 0x87, 0x17, 0x1b, 0x4d, 0xee, 0x58, 0x5c, 0x18, 0x28, 0x29, 0x5b, 0x53, 0x95, 0xeb,
        0x4a, 0x17, 0x77, 0x9f, 0x02, 0x03, 0x01, 0x00, 0x01, 
      0x00, 
    0x00, 
  0x00, 
  0x01, 0x9a, // Content
    0xc5, 0x53, 0x55, 0x43, 0x43, 0x45, 0x53, 0x53, 0x21, 
  0x00, 
0x00,
1
};

#if 0
static Blob
testEncodeComplexDataCpp()
{
  
}
#endif

static double 
benchmarkDataDecodeSecondsCpp(int nIterations, const Blob& encoding)
{
  size_t nameSize = 0;
  double start = getNowSeconds();
  for (int i = 0; i < nIterations; ++i) {
    Data data;
    data.wireDecode(*encoding);
    nameSize = data.getName().size();
  }
  double finish = getNowSeconds();
 
  // Sanity check that we are actually decoding.
  if (nameSize != 2)
   throw runtime_error("Unexpected data packet name size");
  
  return finish - start;
}

static double 
benchmarkDataDecodeSecondsC(double nIterations, uint8_t *encoding, size_t encodingLength)
{
  size_t nameSize = 0;
  double start = getNowSeconds();
  for (int i = 0; i < nIterations; ++i) {
    struct ndn_NameComponent nameComponents[100];
    struct ndn_NameComponent keyNameComponents[100];
    struct ndn_Data dataStruct;
    ndn_Data_initialize
      (&dataStruct, nameComponents, sizeof(nameComponents) / sizeof(nameComponents[0]), 
       keyNameComponents, sizeof(keyNameComponents) / sizeof(keyNameComponents[0]));

    ndn_BinaryXmlDecoder decoder;
    ndn_BinaryXmlDecoder_initialize(&decoder, encoding, encodingLength);  
    size_t signedPortionBeginOffset, signedPortionEndOffset;
    ndn_Error error;
    if ((error = ndn_decodeBinaryXmlData(&dataStruct, &signedPortionBeginOffset, &signedPortionEndOffset, &decoder)))
    {
      cout << "Error in ndn_decodeBinaryXmlData: " << ndn_getErrorString(error) << endl;
      return 0;
    }
    
    nameSize = dataStruct.name.nComponents;
  }
  double finish = getNowSeconds();
 
  // Sanity check that we are actually decoding.
  if (nameSize != 2)
   throw runtime_error("Unexpected data packet name size");
  
  return finish - start;
}

int 
main(int argc, char** argv)
{
  try {
    {
      Blob encoding(Data1, sizeof(Data1));

      int nIterations = 1000000;
      double duration = benchmarkDataDecodeSecondsCpp(nIterations, encoding);
      cout << "Data decode C++: Duration sec: " << duration << ", Hz: " << (nIterations / duration) << endl;  
    }
    {
      int nIterations = 20000000;
      double duration = benchmarkDataDecodeSecondsC(nIterations, Data1, sizeof(Data1));
      cout << "Data decode C:   Duration sec: " << duration << ", Hz: " << (nIterations / duration) << endl;  
    }
  } catch (std::exception& e) {
    cout << "exception: " << e.what() << endl;
  }
  return 0;
}