////////////////////////////////////////////////////////////////////////////////
// Copyright 上海赜睿信息科技有限公司(Zilliz) - All Rights Reserved
// Unauthorized copying of this file, via any medium is strictly prohibited.
// Proprietary and confidential.
////////////////////////////////////////////////////////////////////////////////

#pragma once

#include <memory>
#include <vector>
#include <cstdlib>
#include <cstdio>
#include <fstream>


class DataGenBase;

using DataGenPtr = std::shared_ptr<DataGenBase>;

extern DataGenPtr GetGenerateFactory(const std::string &gen_type);


class DataGenBase {
 public:
    virtual void GenData(const int &dim, const int &nb, const int &nq, float *xb, float *xq, long *ids,
                         const int &k, long *gt_ids);

    virtual void GenData(const int &dim,
                         const int &nb,
                         const int &nq,
                         std::vector<float> &xb,
                         std::vector<float> &xq,
                         std::vector<long> &ids,
                         const int &k,
                         std::vector<long> &gt_ids);
};


class SanityCheck : public DataGenBase {
 public:
    void GenData(const int &dim, const int &nb, const int &nq, float *xb, float *xq, long *ids,
                 const int &k, long *gt_ids) override;
};

struct FileIOWriter {
    std::fstream fs;
    std::string name;

    FileIOWriter(const std::string &fname);
    ~FileIOWriter();
    size_t operator()(void *ptr, size_t size);
};

struct FileIOReader {
    std::fstream fs;
    std::string name;

    FileIOReader(const std::string &fname);
    ~FileIOReader();
    size_t operator()(void *ptr, size_t size);
};