import type { DB } from '../../data/db/index.js';
import type { EnqueueOptions } from './queue.js';
export interface Enqueuer {
    enqueue(db: DB, opts: EnqueueOptions): Promise<string>;
}
export interface ScheduleSpec {
    readonly name: string;
    readonly cron: string;
    readonly timezone?: string;
    readonly payload?: unknown;
}
export interface ScheduleInfo {
    readonly name: string;
    readonly cronExpression: string;
    readonly timezone: string;
    readonly payload: unknown;
    readonly lastRunAt: Date | null;
    readonly nextRunAt: Date;
}
export interface SchedulerOptions {
    readonly checkIntervalMs?: number;
}
export interface Scheduler {
    schedule(db: DB, spec: ScheduleSpec): Promise<void>;
    unschedule(db: DB, name: string): Promise<boolean>;
    listSchedules(db: DB): Promise<ScheduleInfo[]>;
    start(db: DB, opts?: SchedulerOptions): void;
    stop(): void;
}
export declare function createScheduler(enqueuer: Enqueuer, jobsTableQ: string): Scheduler;
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