// Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.

//  This source code is licensed under both the GPLv2 (found in the

//  COPYING file in the root directory) and Apache 2.0 License

//  (found in the LICENSE.Apache file in the root directory).

#pragma once

#include <map>

#include <stdexcept>

#include <string>

#include <vector>

#include "rocksdb/advanced_options.h"

#include "rocksdb/options.h"

#include "rocksdb/status.h"

#include "rocksdb/table.h"

namespace ROCKSDB_NAMESPACE {

struct ColumnFamilyOptions;

struct ConfigOptions;

struct DBOptions;

struct ImmutableCFOptions;

struct ImmutableDBOptions;

struct MutableDBOptions;

struct MutableCFOptions;

struct Options;

std::vector<CompressionType> GetSupportedCompressions();

std::vector<CompressionType> GetSupportedDictCompressions();

std::vector<ChecksumType> GetSupportedChecksums();

inline bool IsSupportedChecksumType(ChecksumType type) {

  // Avoid annoying compiler warning-as-error (-Werror=type-limits)

  auto min = kNoChecksum;

  auto max = kXXH3;

  return type >= min && type <= max;

}

// Checks that the combination of DBOptions and ColumnFamilyOptions are valid

Status ValidateOptions(const DBOptions& db_opts,

                       const ColumnFamilyOptions& cf_opts);

DBOptions BuildDBOptions(const ImmutableDBOptions& immutable_db_options,

                         const MutableDBOptions& mutable_db_options);

ColumnFamilyOptions BuildColumnFamilyOptions(

    const ColumnFamilyOptions& ioptions,

    const MutableCFOptions& mutable_cf_options);

void UpdateColumnFamilyOptions(const ImmutableCFOptions& ioptions,

                               ColumnFamilyOptions* cf_opts);

void UpdateColumnFamilyOptions(const MutableCFOptions& moptions,

                               ColumnFamilyOptions* cf_opts);

std::unique_ptr<Configurable> DBOptionsAsConfigurable(

    const MutableDBOptions& opts);

std::unique_ptr<Configurable> DBOptionsAsConfigurable(

    const DBOptions& opts,

    const std::unordered_map<std::string, std::string>* opt_map = nullptr);

std::unique_ptr<Configurable> CFOptionsAsConfigurable(

    const MutableCFOptions& opts);

std::unique_ptr<Configurable> CFOptionsAsConfigurable(

    const ColumnFamilyOptions& opts,

    const std::unordered_map<std::string, std::string>* opt_map = nullptr);

Status StringToMap(const std::string& opts_str,

                   std::unordered_map<std::string, std::string>* opts_map);

struct OptionsHelper {

  static const std::string kCFOptionsName /*= "ColumnFamilyOptions"*/;

  static const std::string kDBOptionsName /*= "DBOptions" */;

  static std::map<CompactionStyle, std::string> compaction_style_to_string;

  static std::map<CompactionPri, std::string> compaction_pri_to_string;

  static std::map<CompactionStopStyle, std::string>

      compaction_stop_style_to_string;

  static std::map<Temperature, std::string> temperature_to_string;

  static std::unordered_map<std::string, ChecksumType> checksum_type_string_map;

  static std::unordered_map<std::string, CompressionType>

      compression_type_string_map;

  static std::unordered_map<std::string, PrepopulateBlobCache>

      prepopulate_blob_cache_string_map;

  static std::unordered_map<std::string, CompactionStopStyle>

      compaction_stop_style_string_map;

  static std::unordered_map<std::string, EncodingType> encoding_type_string_map;

  static std::unordered_map<std::string, CompactionStyle>

      compaction_style_string_map;

  static std::unordered_map<std::string, CompactionPri>

      compaction_pri_string_map;

  static std::unordered_map<std::string, Temperature> temperature_string_map;

};

// Some aliasing

static auto& compaction_style_to_string =

    OptionsHelper::compaction_style_to_string;

static auto& compaction_pri_to_string = OptionsHelper::compaction_pri_to_string;

static auto& compaction_stop_style_to_string =

    OptionsHelper::compaction_stop_style_to_string;

static auto& temperature_to_string = OptionsHelper::temperature_to_string;

static auto& checksum_type_string_map = OptionsHelper::checksum_type_string_map;

static auto& compaction_stop_style_string_map =

    OptionsHelper::compaction_stop_style_string_map;

static auto& compression_type_string_map =

    OptionsHelper::compression_type_string_map;

static auto& encoding_type_string_map = OptionsHelper::encoding_type_string_map;

static auto& compaction_style_string_map =

    OptionsHelper::compaction_style_string_map;

static auto& compaction_pri_string_map =

    OptionsHelper::compaction_pri_string_map;

static auto& temperature_string_map = OptionsHelper::temperature_string_map;

static auto& prepopulate_blob_cache_string_map =

    OptionsHelper::prepopulate_blob_cache_string_map;

}  // namespace ROCKSDB_NAMESPACE