/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3 * or later ("AGPL"), as published by the Free
 * Software Foundation.
 *
 * 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.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
#include <gtest/gtest.h>
#include <algorithm>
#include <iostream>
#include <string>
#include <thread>
#include "index.h"
#include "indexCache.h"
#include "indexFst.h"
#include "indexFstUtil.h"
#include "indexInt.h"
#include "indexTfile.h"
#include "indexUtil.h"
#include "tskiplist.h"
#include "tutil.h"
using namespace std;

#define NUM_OF_THREAD 10

class DebugInfo {
 public:
  DebugInfo(const char* str) : info(str) {
    std::cout << "------------" << info << "\t"
              << "begin"
              << "-------------" << std::endl;
  }
  ~DebugInfo() {
    std::cout << "-----------" << info << "\t"
              << "end"
              << "--------------" << std::endl;
  }

 private:
  std::string info;
};

class FstWriter {
 public:
  FstWriter() {
    _wc = idxFileCtxCreate(TFILE, TD_TMP_DIR_PATH "tindex", false, 64 * 1024 * 1024);
    _b = fstBuilderCreate(NULL, 0);
  }
  bool Put(const std::string& key, uint64_t val) {
    FstSlice skey = fstSliceCreate((uint8_t*)key.c_str(), key.size());
    bool     ok = fstBuilderInsert(_b, skey, val);
    fstSliceDestroy(&skey);
    return ok;
  }
  ~FstWriter() {
    // fstBuilderFinish(_b);
    fstBuilderDestroy(_b);

    idxFileCtxDestroy(_wc, false);
  }

 private:
  FstBuilder* _b;
  IFileCtx*   _wc;
};

class FstReadMemory {
 public:
  FstReadMemory(size_t size) {
    _wc = idxFileCtxCreate(TFILE, TD_TMP_DIR_PATH "tindex", true, 64 * 1024);
    _w = idxFileCreate(_wc);
    _size = size;
    memset((void*)&_s, 0, sizeof(_s));
  }
  bool init() {
    char* buf = (char*)taosMemoryCalloc(1, sizeof(char) * _size);
    int   nRead = idxFileRead(_w, (uint8_t*)buf, _size);
    if (nRead <= 0) {
      return false;
    }
    _size = nRead;
    _s = fstSliceCreate((uint8_t*)buf, _size);
    _fst = fstCreate(&_s);
    taosMemoryFree(buf);
    return _fst != NULL;
  }
  bool Get(const std::string& key, uint64_t* val) {
    FstSlice skey = fstSliceCreate((uint8_t*)key.c_str(), key.size());
    bool     ok = fstGet(_fst, &skey, val);
    fstSliceDestroy(&skey);
    return ok;
  }
  bool GetWithTimeCostUs(const std::string& key, uint64_t* val, uint64_t* elapse) {
    int64_t s = taosGetTimestampUs();
    bool    ok = this->Get(key, val);
    int64_t e = taosGetTimestampUs();
    *elapse = e - s;
    return ok;
  }
  // add later
  bool Search(FAutoCtx* ctx, std::vector<uint64_t>& result) {
    FStmBuilder* sb = fstSearch(_fst, ctx);
    FStmSt*      st = stmBuilderIntoStm(sb);
    FStmStRslt*  rt = NULL;

    while ((rt = stmStNextWith(st, NULL)) != NULL) {
      result.push_back((uint64_t)(rt->out.out));
    }
    return true;
  }
  bool SearchWithTimeCostUs(FAutoCtx* ctx, std::vector<uint64_t>& result) {
    int64_t s = taosGetTimestampUs();
    bool    ok = this->Search(ctx, result);
    int64_t e = taosGetTimestampUs();
    return ok;
  }

  ~FstReadMemory() {
    idxFileDestroy(_w);
    fstDestroy(_fst);
    fstSliceDestroy(&_s);
    idxFileCtxDestroy(_wc, true);
  }

 private:
  IdxFstFile* _w;
  Fst*        _fst;
  FstSlice    _s;
  IFileCtx*   _wc;
  size_t      _size;
};

#define L 100
#define M 100
#define N 100

int Performance_fstWriteRecords(FstWriter* b) {
  std::string str("aa");
  for (int i = 0; i < L; i++) {
    str[0] = 'a' + i;
    str.resize(2);
    for (int j = 0; j < M; j++) {
      str[1] = 'a' + j;
      str.resize(2);
      for (int k = 0; k < N; k++) {
        str.push_back('a');
        b->Put(str, k);
        printf("(%d, %d, %d, %s)\n", i, j, k, str.c_str());
      }
    }
  }
  return L * M * N;
}
void Performance_fstReadRecords(FstReadMemory* m) {
  std::string str("aa");
  for (int i = 0; i < M; i++) {
    str[0] = 'a' + i;
    str.resize(2);
    for (int j = 0; j < N; j++) {
      str[1] = 'a' + j;
      str.resize(2);
      for (int k = 0; k < L; k++) {
        str.push_back('a');
        uint64_t val, cost;
        if (m->GetWithTimeCostUs(str, &val, &cost)) {
          printf("succes to get kv(%s, %" PRId64 "), cost: %" PRId64 "\n", str.c_str(), val, cost);
        } else {
          printf("failed to get key: %s\n", str.c_str());
        }
      }
    }
  }
}
void checkFstPerf() {
  FstWriter* fw = new FstWriter;
  int64_t    s = taosGetTimestampUs();

  int     num = Performance_fstWriteRecords(fw);
  int64_t e = taosGetTimestampUs();
  printf("write %d record cost %" PRId64 "us\n", num, e - s);
  delete fw;

  FstReadMemory* m = new FstReadMemory(1024 * 64);
  if (m->init()) {
    printf("success to init fst read");
  }
  Performance_fstReadRecords(m);
  delete m;
}
void checkFstPrefixSearch() {
  FstWriter*  fw = new FstWriter;
  int64_t     s = taosGetTimestampUs();
  int         count = 2;
  std::string key("ab");

  for (int i = 0; i < count; i++) {
    key[1] = key[1] + i;
    fw->Put(key, i);
  }
  int64_t e = taosGetTimestampUs();

  std::cout << "insert data count :  " << count << "elapas time: " << e - s << std::endl;
  delete fw;

  FstReadMemory* m = new FstReadMemory(1024 * 64);
  if (m->init() == false) {
    std::cout << "init readMemory failed" << std::endl;
    delete m;
    return;
  }

  // prefix search
  std::vector<uint64_t> result;

  FAutoCtx* ctx = automCtxCreate((void*)"ab", AUTOMATION_PREFIX);
  m->Search(ctx, result);
  assert(result.size() == count);
  for (int i = 0; i < result.size(); i++) {
    assert(result[i] == i);  // check result
  }

  taosMemoryFree(ctx);
  delete m;
}
void validateFst() {
  int        val = 100;
  int        count = 100;
  FstWriter* fw = new FstWriter;
  // write
  {
    std::string key("ab");
    for (int i = 0; i < count; i++) {
      key.push_back('a' + i);
      fw->Put(key, val - i);
    }
  }
  delete fw;

  // read
  FstReadMemory* m = new FstReadMemory(1024 * 64);
  if (m->init() == false) {
    std::cout << "init readMemory failed" << std::endl;
    delete m;
    return;
  }

  {
    std::string key("ab");
    uint64_t    out;
    if (m->Get(key, &out)) {
      printf("success to get (%s, %" PRId64 ")\n", key.c_str(), out);
    } else {
      printf("failed to get(%s)\n", key.c_str());
    }
    for (int i = 0; i < count; i++) {
      key.push_back('a' + i);
      if (m->Get(key, &out)) {
        assert(val - i == out);
        printf("success to get (%s, %" PRId64 ")\n", key.c_str(), out);
      } else {
        printf("failed to get(%s)\n", key.c_str());
      }
    }
  }
  delete m;
}

static std::string logDir = TD_TMP_DIR_PATH "log";
static void        initLog() {
         const char*   defaultLogFileNamePrefix = "taoslog";
         const int32_t maxLogFileNum = 10;

         tsAsyncLog = 0;
         idxDebugFlag = 143;
         strcpy(tsLogDir, logDir.c_str());
         taosRemoveDir(tsLogDir);
         taosMkDir(tsLogDir);

         if (taosInitLog(defaultLogFileNamePrefix, maxLogFileNum) < 0) {
           printf("failed to open log file in directory:%s\n", tsLogDir);
  }
}
class IndexEnv : public ::testing::Test {
 protected:
  virtual void SetUp() {
    initLog();
    taosRemoveDir(path);
    SIndexOpts opts;
    opts.cacheSize = 1024 * 1024 * 4;
    int ret = indexOpen(&opts, path, &index);
    assert(ret == 0);
  }
  virtual void TearDown() { indexClose(index); }

  const char* path = TD_TMP_DIR_PATH "tindex";
  SIndexOpts* opts;
  SIndex*     index;
};

/// TEST_F(IndexEnv, testPut) {
//  /  // single index column
//      / {
//    / std::string colName("tag1"), colVal("Hello world");
//    / SIndexTerm* term =
//        indexTermCreate(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(), colVal.c_str(), /
//        colVal.size());
//    SIndexMultiTerm* terms = indexMultiTermCreate();
//    indexMultiTermAdd(terms, term);
//    / / for (size_t i = 0; i < 100; i++) {
//      / int tableId = i;
//      / int ret = indexPut(index, terms, tableId);
//      / assert(ret == 0);
//      /
//    }
//    / indexMultiTermDestroy(terms);
//    /
//  }
//  /  // multi index column
//      / {
//    / SIndexMultiTerm* terms = indexMultiTermCreate();
//    / {
//      / std::string colName("tag1"), colVal("Hello world");
//      / SIndexTerm* term =
//          / indexTermCreate(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(), colVal.c_str(),
//          colVal.size());
//      / indexMultiTermAdd(terms, term);
//      /
//    }
//    / {
//      / std::string colName("tag2"), colVal("Hello world");
//      / SIndexTerm* term =
//          / indexTermCreate(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(), colVal.c_str(),
//          colVal.size());
//      / indexMultiTermAdd(terms, term);
//      /
//    }
//    / / for (int i = 0; i < 100; i++) {
//      / int tableId = i;
//      / int ret = indexPut(index, terms, tableId);
//      / assert(ret == 0);
//      /
//    }
//    / indexMultiTermDestroy(terms);
//    /
//  }
//  /  //
//      /
//}

class TFileObj {
 public:
  TFileObj(const std::string& path = TD_TMP_DIR_PATH "tindex", const std::string& colName = "voltage")
      : path_(path), colName_(colName) {
    colId_ = 10;
    reader_ = NULL;
    writer_ = NULL;
    // Do Nothing
    //
  }
  int Put(SArray* tv) {
    if (reader_ != NULL) {
      tfileReaderDestroy(reader_);
      reader_ = NULL;
    }
    if (writer_ == NULL) {
      InitWriter();
    }
    return tfileWriterPut(writer_, tv, false);
  }
  bool InitWriter() {
    TFileHeader header;
    header.suid = 1;
    header.version = 1;
    memcpy(header.colName, colName_.c_str(), colName_.size());
    header.colType = TSDB_DATA_TYPE_BINARY;

    std::string path(path_);
    int         colId = 2;
    char        buf[64] = {0};
    sprintf(buf, "%" PRIu64 "-%d-%" PRId64 ".tindex", header.suid, colId_, header.version);
    path.append("/").append(buf);

    fileName_ = path;

    IFileCtx* ctx = idxFileCtxCreate(TFILE, path.c_str(), false, 64 * 1024 * 1024);
    ctx->lru = taosLRUCacheInit(1024 * 1024 * 4, -1, .5);

    writer_ = tfileWriterCreate(ctx, &header);
    return writer_ != NULL ? true : false;
  }
  bool InitReader() {
    IFileCtx* ctx = idxFileCtxCreate(TFILE, fileName_.c_str(), true, 64 * 1024 * 1024);
    ctx->lru = taosLRUCacheInit(1024 * 1024 * 4, -1, .5);
    reader_ = tfileReaderCreate(ctx);
    return reader_ != NULL ? true : false;
  }
  int Get(SIndexTermQuery* query, SArray* result) {
    if (writer_ != NULL) {
      tfileWriterDestroy(writer_);
      writer_ = NULL;
    }
    if (reader_ == NULL && InitReader()) {
      //
      //
    }
    SIdxTRslt* tr = idxTRsltCreate();

    int ret = tfileReaderSearch(reader_, query, tr);

    idxTRsltMergeTo(tr, result);
    idxTRsltDestroy(tr);
    return ret;
  }
  ~TFileObj() {
    if (writer_) {
      tfileWriterDestroy(writer_);
    }
    if (reader_) {
      tfileReaderDestroy(reader_);
    }
  }

 private:
  std::string path_;
  std::string colName_;
  std::string fileName_;

  TFileWriter* writer_;
  TFileReader* reader_;

  int colId_;
};

class IndexTFileEnv : public ::testing::Test {
 protected:
  virtual void SetUp() {
    taosRemoveDir(dir.c_str());
    taosMkDir(dir.c_str());
    fObj = new TFileObj(dir, colName);
  }

  virtual void TearDown() {
    // indexClose(index);
    // indexeptsDestroy(opts);
    delete fObj;
    // tfileWriterDestroy(twrite);
  }
  TFileObj*   fObj;
  std::string dir = TD_TMP_DIR_PATH "tindex";
  std::string colName = "voltage";

  int coldId = 2;
  int version = 1;
  int colType = TSDB_DATA_TYPE_BINARY;
};

static TFileValue* genTFileValue(const char* val) {
  TFileValue* tv = (TFileValue*)taosMemoryCalloc(1, sizeof(TFileValue));
  int32_t     vlen = strlen(val) + 1;
  tv->colVal = (char*)taosMemoryCalloc(1, vlen);
  memcpy(tv->colVal, val, vlen);

  tv->tableId = (SArray*)taosArrayInit(1, sizeof(uint64_t));
  for (size_t i = 0; i < 200; i++) {
    uint64_t v = i;
    taosArrayPush(tv->tableId, &v);
  }
  return tv;
}
static void destroyTFileValue(void* val) {
  TFileValue* tv = (TFileValue*)val;
  taosMemoryFree(tv->colVal);
  taosArrayDestroy(tv->tableId);
  taosMemoryFree(tv);
}
TEST_F(IndexTFileEnv, test_tfile_write) {
  TFileValue* v1 = genTFileValue("ab");

  SArray* data = (SArray*)taosArrayInit(4, sizeof(void*));

  taosArrayPush(data, &v1);
  // taosArrayPush(data, &v2);
  // taosArrayPush(data, &v3);
  // taosArrayPush(data, &v4);

  fObj->Put(data);
  for (size_t i = 0; i < taosArrayGetSize(data); i++) {
    // data
    destroyTFileValue(taosArrayGetP(data, i));
  }
  taosArrayDestroy(data);

  std::string colName("voltage");
  std::string colVal("ab");

  char    buf[256] = {0};
  int16_t sz = colVal.size();
  memcpy(buf, (uint16_t*)&sz, 2);
  memcpy(buf + 2, colVal.c_str(), colVal.size());
  SIndexTerm* term =
      indexTermCreate(1, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(), buf, sizeof(buf));
  SIndexTermQuery query = {term, QUERY_TERM};

  SArray* result = (SArray*)taosArrayInit(1, sizeof(uint64_t));
  fObj->Get(&query, result);
  assert(taosArrayGetSize(result) == 200);
  indexTermDestroy(term);
  taosArrayDestroy(result);

  // tfileWriterDestroy(twrite);
}
class CacheObj {
 public:
  CacheObj() {
    // TODO
    cache = idxCacheCreate(NULL, 0, "voltage", TSDB_DATA_TYPE_BINARY);
  }
  int Put(SIndexTerm* term, int16_t colId, int32_t version, uint64_t uid) {
    int ret = idxCachePut(cache, term, uid);
    if (ret != 0) {
      //
      std::cout << "failed to put into cache: " << ret << std::endl;
    }
    return ret;
  }
  void Debug() {
    //
    idxCacheDebug(cache);
  }
  int Get(SIndexTermQuery* query, int16_t colId, int32_t version, SArray* result, STermValueType* s) {
    SIdxTRslt* tr = idxTRsltCreate();

    int ret = idxCacheSearch(cache, query, tr, s);
    idxTRsltMergeTo(tr, result);
    idxTRsltDestroy(tr);

    if (ret != 0) {
      std::cout << "failed to get from cache:" << ret << std::endl;
    }
    return ret;
  }
  ~CacheObj() {
    // TODO
    idxCacheDestroy(cache);
  }

 private:
  IndexCache* cache = NULL;
};

class IndexCacheEnv : public ::testing::Test {
 protected:
  virtual void SetUp() {
    // TODO
    coj = new CacheObj();
  }
  virtual void TearDown() {
    delete coj;
    // formate
  }
  CacheObj* coj;
};

SIndexTerm* indexTermCreateT(int64_t suid, SIndexOperOnColumn oper, uint8_t colType, const char* colName,
                             int32_t nColName, const char* colVal, int32_t nColVal) {
  char    buf[256] = {0};
  int16_t sz = nColVal;
  memcpy(buf, (uint16_t*)&sz, 2);
  memcpy(buf + 2, colVal, nColVal);
  if (colType == TSDB_DATA_TYPE_BINARY) {
    return indexTermCreate(suid, oper, colType, colName, nColName, buf, sizeof(buf));
  } else {
    return indexTermCreate(suid, oper, colType, colName, nColName, colVal, nColVal);
  }
}
#define MAX_TERM_KEY_LEN 128
TEST_F(IndexCacheEnv, cache_test) {
  int     version = 0;
  int16_t colId = 0;
  int16_t othColId = 10;

  uint64_t    suid = 0;
  std::string colName("voltage");
  {
    std::string colVal("v1");
    SIndexTerm* term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                        colVal.c_str(), colVal.size());
    coj->Put(term, colId, version++, suid++);
    indexTermDestroy(term);
    // indexTermDestry(term);
  }
  {
    std::string colVal("v3");
    SIndexTerm* term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                        colVal.c_str(), colVal.size());
    coj->Put(term, colId, version++, suid++);
    indexTermDestroy(term);
  }
  {
    std::string colVal("v2");
    SIndexTerm* term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                        colVal.c_str(), colVal.size());
    coj->Put(term, colId, version++, suid++);
    indexTermDestroy(term);
  }
  {
    std::string colVal("v3");
    SIndexTerm* term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                        colVal.c_str(), colVal.size());
    coj->Put(term, colId, version++, suid++);
    indexTermDestroy(term);
  }
  {
    std::string colVal("v3");
    SIndexTerm* term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                        colVal.c_str(), colVal.size());
    coj->Put(term, colId, version++, suid++);
    indexTermDestroy(term);
  }
  coj->Debug();
  std::cout << "--------first----------" << std::endl;
  {
    std::string colVal("v3");
    SIndexTerm* term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                        colVal.c_str(), colVal.size());
    coj->Put(term, othColId, version++, suid++);
    indexTermDestroy(term);
  }
  {
    std::string colVal("v4");
    SIndexTerm* term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                        colVal.c_str(), colVal.size());
    coj->Put(term, othColId, version++, suid++);
    indexTermDestroy(term);
  }
  coj->Debug();
  std::cout << "--------second----------" << std::endl;
  {
    std::string colVal("v4");
    for (size_t i = 0; i < 10; i++) {
      colVal[colVal.size() - 1] = 'a' + i;
      SIndexTerm* term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                          colVal.c_str(), colVal.size());
      coj->Put(term, colId, version++, suid++);
      indexTermDestroy(term);
    }
  }
  coj->Debug();
  // begin query
  {
    std::string     colVal("v3");
    SIndexTerm*     term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                            colVal.c_str(), colVal.size());
    SIndexTermQuery query = {term, QUERY_TERM};
    SArray*         ret = (SArray*)taosArrayInit(4, sizeof(suid));
    STermValueType  valType;

    coj->Get(&query, colId, 10000, ret, &valType);
    std::cout << "size : " << taosArrayGetSize(ret) << std::endl;
    assert(taosArrayGetSize(ret) == 4);
    taosArrayDestroy(ret);

    indexTermDestroy(term);
  }
  {
    std::string     colVal("v2");
    SIndexTerm*     term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                            colVal.c_str(), colVal.size());
    SIndexTermQuery query = {term, QUERY_TERM};
    SArray*         ret = (SArray*)taosArrayInit(4, sizeof(suid));
    STermValueType  valType;

    coj->Get(&query, colId, 10000, ret, &valType);
    assert(taosArrayGetSize(ret) == 1);
    taosArrayDestroy(ret);

    indexTermDestroy(term);
  }
}
class IndexObj {
 public:
  IndexObj() {
    // opt
    numOfWrite = 0;
    numOfRead = 0;
    // indexInit();
  }
  int Init(const std::string& dir, bool remove = true) {
    if (remove) {
      taosRemoveDir(dir.c_str());
      taosMkDir(dir.c_str());
    }
    taosMkDir(dir.c_str());
    SIndexOpts opts;
    opts.cacheSize = 1024 * 1024 * 4;

    int ret = indexOpen(&opts, dir.c_str(), &idx);
    if (ret != 0) {
      // opt
      std::cout << "failed to open index: %s" << dir << std::endl;
    }
    return ret;
  }
  void Del(const std::string& colName, const std::string& colVal, uint64_t uid) {
    SIndexTerm*      term = indexTermCreateT(0, DEL_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                             colVal.c_str(), colVal.size());
    SIndexMultiTerm* terms = indexMultiTermCreate();
    indexMultiTermAdd(terms, term);
    Put(terms, uid);
    indexMultiTermDestroy(terms);
  }
  int WriteMillonData(const std::string& colName, const std::string& colVal = "Hello world",
                      size_t numOfTable = 100 * 10000) {
    SIndexTerm*      term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                             colVal.c_str(), colVal.size());
    SIndexMultiTerm* terms = indexMultiTermCreate();
    indexMultiTermAdd(terms, term);
    for (size_t i = 0; i < numOfTable; i++) {
      int ret = Put(terms, i);
      assert(ret == 0);
    }
    indexMultiTermDestroy(terms);
    return numOfTable;
  }
  int WriteMultiMillonData(const std::string& colName, const std::string& colVal = "Hello world",
                           size_t numOfTable = 100 * 10000) {
    std::string tColVal = colVal;
    size_t      colValSize = tColVal.size();
    int         skip = 100;
    numOfTable /= skip;
    for (int i = 0; i < numOfTable; i++) {
      for (int k = 0; k < 10 && k < colVal.size(); k++) {
        // opt
        tColVal[taosRand() % colValSize] = 'a' + k % 26;
      }
      SIndexTerm*      term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                               tColVal.c_str(), tColVal.size());
      SIndexMultiTerm* terms = indexMultiTermCreate();
      indexMultiTermAdd(terms, term);
      for (size_t j = 0; j < skip; j++) {
        int ret = Put(terms, j);
        assert(ret == 0);
      }
      indexMultiTermDestroy(terms);
    }
    return numOfTable;
  }
  int ReadMultiMillonData(const std::string& colName, const std::string& colVal = "Hello world",
                          size_t numOfTable = 100) {
    std::string tColVal = colVal;

    int colValSize = tColVal.size();
    for (int i = 0; i < numOfTable; i++) {
      tColVal[i % colValSize] = 'a' + i % 26;
      SearchOne(colName, tColVal);
    }
    return 0;
  }

  int Put(SIndexMultiTerm* fvs, uint64_t uid) {
    numOfWrite += taosArrayGetSize(fvs);
    return indexPut(idx, fvs, uid);
  }
  int Search(SIndexMultiTermQuery* multiQ, SArray* result) {
    SArray* query = multiQ->query;
    numOfRead = taosArrayGetSize(query);
    return indexSearch(idx, multiQ, result);
  }

  int SearchOne(const std::string& colName, const std::string& colVal) {
    SIndexMultiTermQuery* mq = indexMultiTermQueryCreate(MUST);
    SIndexTerm*           term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                                  colVal.c_str(), colVal.size());
    indexMultiTermQueryAdd(mq, term, QUERY_TERM);

    SArray* result = (SArray*)taosArrayInit(1, sizeof(uint64_t));

    int64_t s = taosGetTimestampUs();
    if (Search(mq, result) == 0) {
      int64_t e = taosGetTimestampUs();
      std::cout << "search and time cost:" << e - s << "\tquery col:" << colName << "\t val: " << colVal
                << "\t size:" << taosArrayGetSize(result) << std::endl;
    } else {
      return -1;
    }
    int sz = taosArrayGetSize(result);
    indexMultiTermQueryDestroy(mq);
    taosArrayDestroy(result);
    return sz;
    // assert(taosArrayGetSize(result) == targetSize);
  }
  int SearchOneTarget(const std::string& colName, const std::string& colVal, uint64_t val) {
    SIndexMultiTermQuery* mq = indexMultiTermQueryCreate(MUST);
    SIndexTerm*           term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                                  colVal.c_str(), colVal.size());
    indexMultiTermQueryAdd(mq, term, QUERY_TERM);

    SArray* result = (SArray*)taosArrayInit(1, sizeof(uint64_t));

    int64_t s = taosGetTimestampUs();
    if (Search(mq, result) == 0) {
      int64_t e = taosGetTimestampUs();
      std::cout << "search one successfully and time cost:" << e - s << "us\tquery col:" << colName
                << "\t val: " << colVal << "\t size:" << taosArrayGetSize(result) << std::endl;
    } else {
    }
    int sz = taosArrayGetSize(result);
    indexMultiTermQueryDestroy(mq);
    assert(sz == 1);
    uint64_t* ret = (uint64_t*)taosArrayGet(result, 0);
    assert(val = *ret);
    taosArrayDestroy(result);

    return sz;
  }

  void PutOne(const std::string& colName, const std::string& colVal) {
    SIndexMultiTerm* terms = indexMultiTermCreate();
    SIndexTerm*      term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                             colVal.c_str(), colVal.size());
    indexMultiTermAdd(terms, term);
    Put(terms, 10);
    indexMultiTermDestroy(terms);
  }
  void PutOneTarge(const std::string& colName, const std::string& colVal, uint64_t val) {
    SIndexMultiTerm* terms = indexMultiTermCreate();
    SIndexTerm*      term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                             colVal.c_str(), colVal.size());
    indexMultiTermAdd(terms, term);
    Put(terms, val);
    indexMultiTermDestroy(terms);
  }
  void Debug() {
    std::cout << "numOfWrite:" << numOfWrite << std::endl;
    std::cout << "numOfRead:" << numOfRead << std::endl;
  }

  ~IndexObj() {
    // indexCleanUp();
    indexClose(idx);
  }

 private:
  SIndexOpts* opts;
  SIndex*     idx;
  int         numOfWrite;
  int         numOfRead;
};

class IndexEnv2 : public ::testing::Test {
 protected:
  virtual void SetUp() {
    initLog();
    index = new IndexObj();
  }
  virtual void TearDown() {
    // taosMsleep(500);
    delete index;
  }
  IndexObj* index;
};
TEST_F(IndexEnv2, testIndexOpen) {
  std::string path = TD_TMP_DIR_PATH "test";
  if (index->Init(path) != 0) {
    std::cout << "failed to init index" << std::endl;
    exit(1);
  }

  int targetSize = 200;
  {
    std::string colName("tag1"), colVal("Hello");

    SIndexTerm*      term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                             colVal.c_str(), colVal.size());
    SIndexMultiTerm* terms = indexMultiTermCreate();
    indexMultiTermAdd(terms, term);
    for (size_t i = 0; i < targetSize; i++) {
      int tableId = i;
      int ret = index->Put(terms, tableId);
      assert(ret == 0);
    }
    indexMultiTermDestroy(terms);
  }
  {
    size_t      size = 200;
    std::string colName("tag1"), colVal("hello");

    SIndexTerm*      term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                             colVal.c_str(), colVal.size());
    SIndexMultiTerm* terms = indexMultiTermCreate();
    indexMultiTermAdd(terms, term);
    for (size_t i = 0; i < size; i++) {
      int tableId = i;
      int ret = index->Put(terms, tableId);
      assert(ret == 0);
    }
    indexMultiTermDestroy(terms);
  }
  {
    size_t      size = 200;
    std::string colName("tag1"), colVal("Hello");

    SIndexTerm*      term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                             colVal.c_str(), colVal.size());
    SIndexMultiTerm* terms = indexMultiTermCreate();
    indexMultiTermAdd(terms, term);
    for (size_t i = size * 3; i < size * 4; i++) {
      int tableId = i;
      int ret = index->Put(terms, tableId);
      assert(ret == 0);
    }
    indexMultiTermDestroy(terms);
  }

  {
    std::string           colName("tag1"), colVal("Hello");
    SIndexMultiTermQuery* mq = indexMultiTermQueryCreate(MUST);
    SIndexTerm*           term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                                  colVal.c_str(), colVal.size());
    indexMultiTermQueryAdd(mq, term, QUERY_TERM);

    SArray* result = (SArray*)taosArrayInit(1, sizeof(uint64_t));
    index->Search(mq, result);
    std::cout << "target size: " << taosArrayGetSize(result) << std::endl;
    EXPECT_EQ(400, taosArrayGetSize(result));
    taosArrayDestroy(result);
    indexMultiTermQueryDestroy(mq);
  }
}
TEST_F(IndexEnv2, testEmptyIndexOpen) {
  std::string path = TD_TMP_DIR_PATH "test";
  if (index->Init(path) != 0) {
    std::cout << "failed to init index" << std::endl;
    exit(1);
  }

  int targetSize = 1;
  {
    std::string colName("tag1"), colVal("Hello");

    SIndexTerm*      term = indexTermCreateT(0, ADD_VALUE, TSDB_DATA_TYPE_BINARY, colName.c_str(), colName.size(),
                                             colVal.c_str(), colVal.size());
    SIndexMultiTerm* terms = indexMultiTermCreate();
    indexMultiTermAdd(terms, term);
    for (size_t i = 0; i < targetSize; i++) {
      int tableId = i;
      int ret = index->Put(terms, tableId);
      assert(ret == 0);
    }
    indexMultiTermDestroy(terms);
  }
}

TEST_F(IndexEnv2, testIndex_TrigeFlush) {
  std::string path = TD_TMP_DIR_PATH "testxxx";
  if (index->Init(path) != 0) {
    // r
    std::cout << "failed to init" << std::endl;
  }
  int numOfTable = 100 * 100;
  index->WriteMillonData("tag1", "Hello Wolrd", numOfTable);
  int target = index->SearchOne("tag1", "Hello Wolrd");
  std::cout << "Get Index: " << target << std::endl;
  assert(numOfTable == target);
}

static void single_write_and_search(IndexObj* idx) {
  // int target = idx->SearchOne("tag1", "Hello");
  // target = idx->SearchOne("tag2", "Test");
}
static void multi_write_and_search(IndexObj* idx) {
  idx->PutOne("tag1", "Hello");
  idx->PutOne("tag2", "Test");
  int target = idx->SearchOne("tag1", "Hello");
  target = idx->SearchOne("tag2", "Test");
  idx->WriteMultiMillonData("tag1", "hello world test", 100 * 100);
  idx->WriteMultiMillonData("tag2", "world test nothing", 100 * 10);
}
TEST_F(IndexEnv2, testIndex_serarch_cache_and_tfile) {
  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
  if (index->Init(path) != 0) {
    // opt
  }
  index->PutOne("tag1", "Hello");
  index->PutOne("tag2", "Test");
  index->WriteMultiMillonData("tag1", "Hello", 100 * 100);
  index->WriteMultiMillonData("tag2", "Test", 100 * 100);
  std::thread threads[NUM_OF_THREAD];

  for (int i = 0; i < NUM_OF_THREAD; i++) {
    //
    threads[i] = std::thread(single_write_and_search, index);
  }
  for (int i = 0; i < NUM_OF_THREAD; i++) {
    // TOD
    threads[i].join();
  }
}
TEST_F(IndexEnv2, testIndex_MultiWrite_and_MultiRead) {
  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
  if (index->Init(path) != 0) {
  }

  std::thread threads[NUM_OF_THREAD];
  for (int i = 0; i < NUM_OF_THREAD; i++) {
    //
    threads[i] = std::thread(multi_write_and_search, index);
  }
  for (int i = 0; i < NUM_OF_THREAD; i++) {
    // TOD
    threads[i].join();
  }
}

TEST_F(IndexEnv2, testIndex_restart) {
  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
  if (index->Init(path, false) != 0) {
  }
  index->SearchOneTarget("tag1", "Hello", 10);
  index->SearchOneTarget("tag2", "Test", 10);
}
// TEST_F(IndexEnv2, testIndex_restart1) {
//  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
//  if (index->Init(path, false) != 0) {
//  }
//  index->ReadMultiMillonData("tag1", "coding");
//  index->SearchOneTarget("tag1", "Hello", 10);
//  index->SearchOneTarget("tag2", "Test", 10);
//}

// TEST_F(IndexEnv2, testIndex_read_performance) {
//  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
//  if (index->Init(path) != 0) {
//  }
//  index->PutOneTarge("tag1", "Hello", 12);
//  index->PutOneTarge("tag1", "Hello", 15);
//  index->ReadMultiMillonData("tag1", "Hello");
//  std::cout << "reader sz: " << index->SearchOne("tag1", "Hello") << std::endl;
//  assert(3 == index->SearchOne("tag1", "Hello"));
//}
TEST_F(IndexEnv2, testIndexMultiTag) {
  std::string path = TD_TMP_DIR_PATH "multi_tag";
  if (index->Init(path) != 0) {
  }
  int64_t st = taosGetTimestampUs();
  int32_t num = 100 * 100;
  index->WriteMultiMillonData("tag1", "xxxxxxxxxxxxxxx", num);
  std::cout << "numOfRow: " << num << "\ttime cost:" << taosGetTimestampUs() - st << std::endl;
  // index->WriteMultiMillonData("tag2", "xxxxxxxxxxxxxxxxxxxxxxxxx", 100 * 10000);
}
TEST_F(IndexEnv2, testLongComVal1) {
  std::string path = TD_TMP_DIR_PATH "long_colVal";
  if (index->Init(path) != 0) {
  }
  // gen colVal by randstr
  std::string randstr = "xxxxxxxxxxxxxxxxx";
  index->WriteMultiMillonData("tag1", randstr, 100 * 1000);
}

TEST_F(IndexEnv2, testLongComVal2) {
  std::string path = TD_TMP_DIR_PATH "long_colVal";
  if (index->Init(path) != 0) {
  }
  // gen colVal by randstr
  std::string randstr = "abcccc fdadfafdafda";
  index->WriteMultiMillonData("tag1", randstr, 100 * 1000);
}
TEST_F(IndexEnv2, testLongComVal3) {
  std::string path = TD_TMP_DIR_PATH "long_colVal";
  if (index->Init(path) != 0) {
  }
  // gen colVal by randstr
  std::string randstr = "Yes, coding and coding and coding";
  index->WriteMultiMillonData("tag1", randstr, 100 * 1000);
}
TEST_F(IndexEnv2, testLongComVal4) {
  std::string path = TD_TMP_DIR_PATH "long_colVal";
  if (index->Init(path) != 0) {
  }
  // gen colVal by randstr
  std::string randstr = "111111 bac fdadfa";
  index->WriteMultiMillonData("tag1", randstr, 100 * 100);
}
TEST_F(IndexEnv2, testIndex_read_performance1) {
  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
  if (index->Init(path) != 0) {
  }
  index->PutOneTarge("tag1", "Hello", 12);
  index->PutOneTarge("tag1", "Hello", 15);
  index->ReadMultiMillonData("tag1", "Hello", 1000);
  std::cout << "reader sz: " << index->SearchOne("tag1", "Hello") << std::endl;
  EXPECT_EQ(2, index->SearchOne("tag1", "Hello"));
}
TEST_F(IndexEnv2, testIndex_read_performance2) {
  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
  if (index->Init(path) != 0) {
  }
  index->PutOneTarge("tag1", "Hello", 12);
  index->PutOneTarge("tag1", "Hello", 15);
  index->ReadMultiMillonData("tag1", "Hello", 1000);
  std::cout << "reader sz: " << index->SearchOne("tag1", "Hello") << std::endl;
  EXPECT_EQ(2, index->SearchOne("tag1", "Hello"));
}
TEST_F(IndexEnv2, testIndex_read_performance3) {
  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
  if (index->Init(path) != 0) {
  }
  index->PutOneTarge("tag1", "Hello", 12);
  index->PutOneTarge("tag1", "Hello", 15);
  index->ReadMultiMillonData("tag1", "Hello", 1000);
  std::cout << "reader sz: " << index->SearchOne("tag1", "Hello") << std::endl;
  EXPECT_EQ(2, index->SearchOne("tag1", "Hello"));
}
TEST_F(IndexEnv2, testIndex_read_performance4) {
  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
  if (index->Init(path) != 0) {
  }
  index->PutOneTarge("tag10", "Hello", 12);
  index->PutOneTarge("tag12", "Hello", 15);
  index->ReadMultiMillonData("tag10", "Hello", 1000);
  std::cout << "reader sz: " << index->SearchOne("tag1", "Hello") << std::endl;
  EXPECT_EQ(1, index->SearchOne("tag10", "Hello"));
}
TEST_F(IndexEnv2, testIndex_cache_del) {
  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
  if (index->Init(path) != 0) {
  }
  for (int i = 0; i < 100; i++) {
    index->PutOneTarge("tag10", "Hello", i);
  }
  index->Del("tag10", "Hello", 12);
  index->Del("tag10", "Hello", 11);

  // index->WriteMultiMillonData("tag10", "xxxxxxxxxxxxxx", 100 * 10000);
  index->Del("tag10", "Hello", 17);
  EXPECT_EQ(97, index->SearchOne("tag10", "Hello"));

  index->PutOneTarge("tag10", "Hello", 17);  // add again
  EXPECT_EQ(98, index->SearchOne("tag10", "Hello"));

  // del all
  for (int i = 0; i < 200; i++) {
    index->Del("tag10", "Hello", i);
  }
  EXPECT_EQ(0, index->SearchOne("tag10", "Hello"));

  // add other item
  for (int i = 0; i < 2000; i++) {
    index->PutOneTarge("tag10", "World", i);
  }

  for (int i = 0; i < 2000; i++) {
    index->PutOneTarge("tag10", "Hello", i);
  }
  EXPECT_EQ(2000, index->SearchOne("tag10", "Hello"));

  for (int i = 0; i < 2000; i++) {
    index->Del("tag10", "Hello", i);
  }
  EXPECT_EQ(0, index->SearchOne("tag10", "Hello"));
}

TEST_F(IndexEnv2, testIndex_del) {
  std::string path = TD_TMP_DIR_PATH "cache_and_tfile";
  if (index->Init(path) != 0) {
  }
  for (int i = 0; i < 100; i++) {
    index->PutOneTarge("tag10", "Hello", i);
  }
  index->Del("tag10", "Hello", 12);
  index->Del("tag10", "Hello", 11);
  EXPECT_EQ(98, index->SearchOne("tag10", "Hello"));

  index->WriteMultiMillonData("tag10", "xxxxxxxxxxxxxx", 100 * 100);
  index->Del("tag10", "Hello", 17);
  EXPECT_EQ(97, index->SearchOne("tag10", "Hello"));
}