/**
 * @module SharedLock
 */
import { type Kysely } from "kysely";
import { type IReadableContext } from "../../../../execution-context/contracts/_module.js";
import { type ISharedLockAdapter, type ISharedLockAdapterState, type SharedLockAcquireSettings } from "../../../../shared-lock/contracts/_module.js";
import { type TimeSpan } from "../../../../time-span/implementations/_module.js";
import { type IDeinitizable, type IInitizable, type IPrunable } from "../../../../utilities/_module.js";
/**
 * IMPORT_PATH: `"@daiso-tech/core/shared-lock/kysely-shared-lock-adapter"`
 * @group Adapters
 */
export type KyselyWriterLockTable = {
    key: string;
    owner: string;
    expiration: number | bigint | string | null;
};
/**
 * IMPORT_PATH: `"@daiso-tech/core/shared-lock/kysely-shared-lock-adapter"`
 * @group Adapters
 */
export type KyselyReaderSemaphoreTable = {
    key: string;
    limit: number;
};
/**
 * IMPORT_PATH: `"@daiso-tech/core/shared-lock/kysely-shared-lock-adapter"`
 * @group Adapters
 */
export type KyselyReaderSemaphoreSlotTable = {
    id: string;
    key: string;
    expiration: number | string | null;
};
/**
 * IMPORT_PATH: `"@daiso-tech/core/shared-lock/kysely-shared-lock-adapter"`
 * @group Adapters
 */
export type KyselySharedLockTables = {
    writerLock: KyselyWriterLockTable;
    readerSemaphore: KyselyReaderSemaphoreTable;
    readerSemaphoreSlot: KyselyReaderSemaphoreSlotTable;
};
/**
 * Configuration for `KyselySharedLockAdapter`.
 * Requires a Kysely database instance with the shared-lock schema applied.
 *
 * IMPORT_PATH: `"@daiso-tech/core/shared-lock/kysely-shared-lock-adapter"`
 * @group Adapters
 */
export type KyselySharedLockAdapterSettings = {
    /**
     * The Kysely database instance with the required shared-lock schema tables applied.
     */
    kysely: Kysely<KyselySharedLockTables>;
    /**
     *  @default
     * ```ts
     * () => new Date()
     * ```
     */
    currentDate?: () => Date;
};
/**
 * To utilize the `KyselySharedLockAdapter`, you must install the [`"kysely"`](https://www.npmjs.com/package/kysely) package and configure a `Kysely` class instance.
 *
 * Note in order to use `KyselySharedLockAdapter` correctly, ensure you use a single, consistent database across all server instances and use a database that has support for transactions.
 * The adapter have been tested with `sqlite`, `postgres` and `mysql` databases.
 *
 * IMPORT_PATH: `"@daiso-tech/core/shared-lock/kysely-shared-lock-adapter"`
 * @group Adapters
 */
export declare class KyselySharedLockAdapter implements ISharedLockAdapter, IDeinitizable, IInitizable, IPrunable {
    private readonly kysely;
    private readonly isMysql;
    private readonly currentDate;
    /**
     * @example
     * ```ts
     * import { KyselySharedLockAdapter } from "@daiso-tech/core/shared-lock/kysely-shared-lock-adapter";
     * import Sqlite from "better-sqlite3";
     * import { Kysely, SqliteDialect } from "kysely";
     *
     * const sharedLockAdapter = new KyselySharedLockAdapter({
     *   kysely: new Kysely({
     *     dialect: new SqliteDialect({
     *       database: new Sqlite("local.db"),
     *     }),
     *   }),
     * });
     * // You need initialize the adapter once before using it.
     * await sharedLockAdapter.init();
     * ```
     */
    constructor(settings: KyselySharedLockAdapterSettings);
    private _transaction;
    init(): Promise<void>;
    /**
     * Removes all related shared-lock tables and their rows.
     * Note all shared-lock data will be removed.
     */
    deInit(): Promise<void>;
    private removeAllExpiredReaders;
    private removeAllExpiredWriters;
    removeAllExpired(): Promise<void>;
    acquireWriter(key: string, lockId: string, ttl: TimeSpan | null, _context: IReadableContext): Promise<boolean>;
    releaseWriter(key: string, lockId: string, _context: IReadableContext): Promise<boolean>;
    forceReleaseWriter(key: string, _context: IReadableContext): Promise<boolean>;
    refreshWriter(key: string, lockId: string, ttl: TimeSpan, _context: IReadableContext): Promise<boolean>;
    private checkWriterInTransaction;
    private ensureReaderSemaphore;
    private countActiveReaderSlots;
    private upsertReaderSlot;
    acquireReader(settings: SharedLockAcquireSettings): Promise<boolean>;
    releaseReader(key: string, slotId: string, _context: IReadableContext): Promise<boolean>;
    forceReleaseAllReaders(key: string, _context: IReadableContext): Promise<boolean>;
    refreshReader(key: string, slotId: string, ttl: TimeSpan, _context: IReadableContext): Promise<boolean>;
    private deleteNonExpiredWriter;
    private deleteNonExpiredReaderSlots;
    forceRelease(key: string, _context: IReadableContext): Promise<boolean>;
    private getWriterState;
    private getReaderState;
    getState(key: string, _context: IReadableContext): Promise<ISharedLockAdapterState | null>;
}