//===----------------------------------------------------------------------===//
//
//                         BusTub
//
// config.h
//
// Identification: src/include/common/config.h
//
// Copyright (c) 2015-2025, Carnegie Mellon University Database Group
//
//===----------------------------------------------------------------------===//

#pragma once

#include <atomic>
#include <chrono>  // NOLINT
#include <cstdint>

#define DISABLE_LOCK_MANAGER
#define DISABLE_CHECKPOINT_MANAGER

namespace bustub {

/** Cycle detection is performed every CYCLE_DETECTION_INTERVAL milliseconds. */
extern std::chrono::milliseconds cycle_detection_interval;

/** True if logging should be enabled, false otherwise. */
extern std::atomic<bool> enable_logging;

/** If ENABLE_LOGGING is true, the log should be flushed to disk every LOG_TIMEOUT. */
extern std::chrono::duration<int64_t> log_timeout;

static constexpr int INVALID_FRAME_ID = -1;  // invalid frame id
static constexpr int INVALID_PAGE_ID = -1;   // invalid page id
static constexpr int INVALID_TXN_ID = -1;    // invalid transaction id
static constexpr int INVALID_LSN = -1;       // invalid log sequence number

static constexpr int BUSTUB_PAGE_SIZE = 8192;                                        // size of a data page in byte
static constexpr int BUFFER_POOL_SIZE = 128;                                         // size of buffer pool
static constexpr int DEFAULT_DB_IO_SIZE = 16;                                        // starting size of file on disk
static constexpr int LOG_BUFFER_SIZE = ((BUFFER_POOL_SIZE + 1) * BUSTUB_PAGE_SIZE);  // size of a log buffer in byte
static constexpr int BUCKET_SIZE = 50;                                               // size of extendible hash bucket
static constexpr int LRUK_REPLACER_K = 10;                                           // backward k-distance for lru-k
static constexpr int BUSTUB_BATCH_SIZE = 20;  // number of tuples processed in a batch

using frame_id_t = int32_t;    // frame id type
using page_id_t = int32_t;     // page id type
using txn_id_t = int64_t;      // transaction id type
using lsn_t = int32_t;         // log sequence number type
using slot_offset_t = size_t;  // slot offset type
using oid_t = uint16_t;

const txn_id_t TXN_START_ID = 1LL << 62;  // first txn id

static constexpr int VARCHAR_DEFAULT_LENGTH = 128;  // default length for varchar when constructing the column

}  // namespace bustub