/*
 * 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/>.
 */

#ifndef _TD_INDEX_H_
#define _TD_INDEX_H_

#include "os.h"
#include "tarray.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct SIndex               SIndex;
typedef struct SIndexTerm           SIndexTerm;
typedef struct SIndexOpts           SIndexOpts;
typedef struct SIndexMultiTermQuery SIndexMultiTermQuery;
typedef struct SArray               SIndexMultiTerm;

typedef enum {
  ADD_VALUE,     // add index colume value
  DEL_VALUE,     // delete index column value
  UPDATE_VALUE,  // update index column value
  ADD_INDEX,     // add index on specify column
  DROP_INDEX,    // drop existed index
  DROP_SATBLE    // drop stable
} SIndexOperOnColumn;

typedef enum { MUST = 0, SHOULD = 1, NOT = 2 } EIndexOperatorType;
typedef enum { QUERY_TERM = 0, QUERY_PREFIX = 1, QUERY_SUFFIX = 2, QUERY_REGEX = 3 } EIndexQueryType;
/*
 * @param: oper
 *
 */
SIndexMultiTermQuery* indexMultiTermQueryCreate(EIndexOperatorType oper);
void                  indexMultiTermQueryDestroy(SIndexMultiTermQuery* pQuery);
int                   indexMultiTermQueryAdd(SIndexMultiTermQuery* pQuery, SIndexTerm* term, EIndexQueryType type);
/*
 * @param:
 * @param:
 */
int  indexOpen(SIndexOpts* opt, const char* path, SIndex** index);
void indexClose(SIndex* index);
int  indexPut(SIndex* index, SIndexMultiTerm* terms, uint64_t uid);
int  indexDelete(SIndex* index, SIndexMultiTermQuery* query);
int  indexSearch(SIndex* index, SIndexMultiTermQuery* query, SArray* result);
int  indexRebuild(SIndex* index, SIndexOpts* opt);
/*
 * @param
 * @param
 */
SIndexMultiTerm* indexMultiTermCreate();
int              indexMultiTermAdd(SIndexMultiTerm* terms, SIndexTerm* term);
void             indexMultiTermDestroy(SIndexMultiTerm* terms);
/*
 * @param:
 * @param:
 */
SIndexOpts* indexOptsCreate();
void        indexOptsDestroy(SIndexOpts* opts);

/*
 * @param:
 * @param:
 */

SIndexTerm* indexTermCreate(int64_t suid, SIndexOperOnColumn operType, uint8_t colType, const char* colName,
                            int32_t nColName, const char* colVal, int32_t nColVal);
void        indexTermDestroy(SIndexTerm* p);

/*
 * init index env
 *
 */
void indexInit();

/*
 * destory index env
 *
 */
void indexCleanUp();

#ifdef __cplusplus
}
#endif

#endif /*_TD_INDEX_H_*/