// Copyright (c) 2014, Facebook, Inc.  All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.

#pragma once

#include <string>
#include <stdexcept>
#include "util/mutable_cf_options.h"
#include "rocksdb/status.h"

namespace rocksdb {

Status GetMutableOptionsFromStrings(
    const MutableCFOptions& base_options,
    const std::unordered_map<std::string, std::string>& options_map,
    MutableCFOptions* new_options);

enum class OptionType {
  kBoolean,
  kInt,
  kUInt,
  kUInt32T,
  kUInt64T,
  kSizeT,
  kString,
  kUnknown
};

// A struct for storing constant option information such as option name,
// option type, and offset.
struct OptionTypeInfo {
  int offset;
  OptionType type;
};

static std::unordered_map<std::string, OptionTypeInfo> db_options_type_info = {
    /*
     // not yet supported
      AccessHint access_hint_on_compaction_start;
      Env* env;
      InfoLogLevel info_log_level;
      WALRecoveryMode wal_recovery_mode;
      std::shared_ptr<Cache> row_cache;
      std::shared_ptr<DeleteScheduler> delete_scheduler;
      std::shared_ptr<Logger> info_log;
      std::shared_ptr<RateLimiter> rate_limiter;
      std::shared_ptr<Statistics> statistics;
      std::vector<DbPath> db_paths;
      std::vector<std::shared_ptr<EventListener>> listeners;
     */
    {"advise_random_on_open",
     {offsetof(struct DBOptions, advise_random_on_open), OptionType::kBoolean}},
    {"allow_mmap_reads",
     {offsetof(struct DBOptions, allow_mmap_reads), OptionType::kBoolean}},
    {"allow_mmap_writes",
     {offsetof(struct DBOptions, allow_mmap_writes), OptionType::kBoolean}},
    {"allow_os_buffer",
     {offsetof(struct DBOptions, allow_os_buffer), OptionType::kBoolean}},
    {"create_if_missing",
     {offsetof(struct DBOptions, create_if_missing), OptionType::kBoolean}},
    {"create_missing_column_families",
     {offsetof(struct DBOptions, create_missing_column_families),
      OptionType::kBoolean}},
    {"disableDataSync",
     {offsetof(struct DBOptions, disableDataSync), OptionType::kBoolean}},
    {"disable_data_sync",  // for compatibility
     {offsetof(struct DBOptions, disableDataSync), OptionType::kBoolean}},
    {"enable_thread_tracking",
     {offsetof(struct DBOptions, enable_thread_tracking),
      OptionType::kBoolean}},
    {"error_if_exists",
     {offsetof(struct DBOptions, error_if_exists), OptionType::kBoolean}},
    {"is_fd_close_on_exec",
     {offsetof(struct DBOptions, is_fd_close_on_exec), OptionType::kBoolean}},
    {"paranoid_checks",
     {offsetof(struct DBOptions, paranoid_checks), OptionType::kBoolean}},
    {"skip_log_error_on_recovery",
     {offsetof(struct DBOptions, skip_log_error_on_recovery),
      OptionType::kBoolean}},
    {"skip_stats_update_on_db_open",
     {offsetof(struct DBOptions, skip_stats_update_on_db_open),
      OptionType::kBoolean}},
    {"use_adaptive_mutex",
     {offsetof(struct DBOptions, use_adaptive_mutex), OptionType::kBoolean}},
    {"use_fsync",
     {offsetof(struct DBOptions, use_fsync), OptionType::kBoolean}},
    {"max_background_compactions",
     {offsetof(struct DBOptions, max_background_compactions),
      OptionType::kInt}},
    {"max_background_flushes",
     {offsetof(struct DBOptions, max_background_flushes), OptionType::kInt}},
    {"max_file_opening_threads",
     {offsetof(struct DBOptions, max_file_opening_threads), OptionType::kInt}},
    {"max_open_files",
     {offsetof(struct DBOptions, max_open_files), OptionType::kInt}},
    {"table_cache_numshardbits",
     {offsetof(struct DBOptions, table_cache_numshardbits), OptionType::kInt}},
    {"db_write_buffer_size",
     {offsetof(struct DBOptions, db_write_buffer_size), OptionType::kSizeT}},
    {"keep_log_file_num",
     {offsetof(struct DBOptions, keep_log_file_num), OptionType::kSizeT}},
    {"log_file_time_to_roll",
     {offsetof(struct DBOptions, log_file_time_to_roll), OptionType::kSizeT}},
    {"manifest_preallocation_size",
     {offsetof(struct DBOptions, manifest_preallocation_size),
      OptionType::kSizeT}},
    {"max_log_file_size",
     {offsetof(struct DBOptions, max_log_file_size), OptionType::kSizeT}},
    {"db_log_dir",
     {offsetof(struct DBOptions, db_log_dir), OptionType::kString}},
    {"wal_dir", {offsetof(struct DBOptions, wal_dir), OptionType::kString}},
    {"num_subcompactions",
     {offsetof(struct DBOptions, num_subcompactions), OptionType::kUInt32T}},
    {"WAL_size_limit_MB",
     {offsetof(struct DBOptions, WAL_size_limit_MB), OptionType::kUInt64T}},
    {"WAL_ttl_seconds",
     {offsetof(struct DBOptions, WAL_ttl_seconds), OptionType::kUInt64T}},
    {"bytes_per_sync",
     {offsetof(struct DBOptions, bytes_per_sync), OptionType::kUInt64T}},
    {"delayed_write_rate",
     {offsetof(struct DBOptions, delayed_write_rate), OptionType::kUInt64T}},
    {"delete_obsolete_files_period_micros",
     {offsetof(struct DBOptions, delete_obsolete_files_period_micros),
      OptionType::kUInt64T}},
    {"max_manifest_file_size",
     {offsetof(struct DBOptions, max_manifest_file_size),
      OptionType::kUInt64T}},
    {"max_total_wal_size",
     {offsetof(struct DBOptions, max_total_wal_size), OptionType::kUInt64T}},
    {"wal_bytes_per_sync",
     {offsetof(struct DBOptions, wal_bytes_per_sync), OptionType::kUInt64T}},
    {"stats_dump_period_sec",
     {offsetof(struct DBOptions, stats_dump_period_sec), OptionType::kUInt}}};

}  // namespace rocksdb