// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you under the Apache License, Version 2.0 (the

// "License"); you may not use this file except in compliance

// with the License.  You may obtain a copy of the License at

//

//   http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing,

// software distributed under the License is distributed on an

// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

// KIND, either express or implied.  See the License for the

// specific language governing permissions and limitations

// under the License.

#pragma once

#include <stdint.h>

#include <time.h>

#include <mutex>

#include <string>

#include <vector>

#include "common/status.h"

#include "util/countdown_latch.h"

#include "util/once.h"

namespace doris {

class TUniqueId;

class ExecEnv;

class Thread;

// In every directory, '.trash' directory is used to save data need to delete

// daemon thread is check no used directory to delete

class LoadPathMgr {

public:

    LoadPathMgr(ExecEnv* env);

    ~LoadPathMgr() = default;

    Status init();

    void stop();

    Status allocate_dir(const std::string& db, const std::string& label, std::string* prefix,

                        int64_t file_bytes);

    bool check_disk_space(size_t disk_capacity_bytes, size_t available_bytes, int64_t file_bytes);

    void get_load_data_path(std::vector<std::string>* data_paths);

    Status get_load_error_file_name(const std::string& db, const std::string& label,

                                    const TUniqueId& fragment_instance_id, std::string* error_path);

    std::string get_load_error_absolute_path(const std::string& file_path);

    const std::string& get_load_error_file_dir() const { return _error_log_dir; }

    void clean_tmp_files(const std::string& file_path) { clean_files_in_path_vec(file_path); }

private:

    bool is_too_old(time_t cur_time, const std::string& label_dir, int64_t reserve_hours);

    void clean_one_path(const std::string& path);

    void clean_error_log();

    void clean();

    void process_path(time_t now, const std::string& path, int64_t reserve_hours);

    void clean_files_in_path_vec(const std::string& path);

    ExecEnv* _exec_env = nullptr;

    std::mutex _lock;

    std::vector<std::string> _path_vec;

    int _idx;

    int64_t _reserved_hours;

    std::string _error_log_dir;

    uint32_t _next_shard;

    uint32_t _error_path_next_shard;

    CountDownLatch _stop_background_threads_latch;

    std::shared_ptr<Thread> _clean_thread;

    DorisCallOnce<Status> _init_once;

};

} // namespace doris