//
// Created by Kirill Zhukov on 20.04.2025.
//

#ifndef COMPACTOR_H
#define COMPACTOR_H

#include <atomic>
#include <vector>
#include <string>
#include "utils/datastructures/LFSkipList.h"
#include "utils/io/SSTableIO.h"
#include "utils/hash/Hash128.h"

namespace usub::utils
{
    class Compactor
    {
    public:
        explicit Compactor(VersionManager& vm);

        void add_sstable_l0(const std::string& filename);


        void run();

    private:
        void compact_level0();

        void compact_level1();

    private:
        std::vector<std::string> level0_files;
        std::vector<std::string> level1_files;
        std::vector<std::string> level2_files;
        std::atomic<bool> running{true};
        std::thread background_thread;
        VersionManager& version_manager;
    }; // utils
} // usub


#endif //COMPACTOR_H