import { ModuleMetadata, Type } from "@nestjs/common/interfaces";
import pg from "pg";
import { TasksPool } from "./tasks-pool.js";
/**
 * Resolved NestJS module options for {@link TasksQueueModule}.
 *
 * This is the final shape produced by {@link TasksQueueAsyncOptions} or
 * {@link TasksQueueOptionsFactory}.
 */
export interface TasksQueueModuleOptions {
    /**
     * PostgreSQL connection pool used by queue services.
     */
    db: pg.Pool;
    /**
     * Worker pools to create inside {@link TasksPoolsService}.
     */
    pools: TasksPool[];
    /**
     * Whether to run the background auxiliary worker.
     *
     * When omitted, the module enables it by default.
     */
    runAuxiliaryWorker?: boolean;
}
/**
 * NestJS injection token that stores resolved
 * {@link TasksQueueModuleOptions}.
 */
export declare const TASKS_QUEUE_OPTIONS: unique symbol;
/**
 * Factory contract for class-based async configuration of
 * {@link TasksQueueModule}.
 */
export interface TasksQueueOptionsFactory {
    /**
     * Produce module options for the queue module.
     *
     * @returns resolved {@link TasksQueueModuleOptions}
     */
    createTelegrafOptions(): Promise<TasksQueueModuleOptions> | TasksQueueModuleOptions;
}
/**
 * Async NestJS configuration options for {@link TasksQueueModule.forRootAsync}.
 *
 * Supports the standard NestJS patterns: `useFactory`, `useClass`, or
 * `useExisting`.
 */
export interface TasksQueueAsyncOptions extends Pick<ModuleMetadata, "imports"> {
    /**
     * Whether to enable the NestJS registrar for `@ScheduledTask(...)` methods.
     *
     * When omitted, the module enables it by default.
     */
    runScheduledTasksRegistrar?: boolean;
    /**
     * Reuse an existing provider that implements {@link TasksQueueOptionsFactory}.
     */
    useExisting?: Type<TasksQueueOptionsFactory>;
    /**
     * Instantiate a dedicated provider class that implements
     * {@link TasksQueueOptionsFactory}.
     */
    useClass?: Type<TasksQueueOptionsFactory>;
    /**
     * Build options with a plain factory function.
     */
    useFactory?: (...args: any[]) => Promise<TasksQueueModuleOptions> | TasksQueueModuleOptions;
    /**
     * Dependencies injected into {@link useFactory}.
     */
    inject?: any[];
}