import { JsmLogger } from 'jsm-logger';
export type TQueueItemStatus = 'pending' | 'processing' | 'failed' | 'retrying' | 'completed';
export type TQueueItemType = string;
export interface TQueueItem<T extends TQueueItemType = TQueueItemType, D extends object = any> {
    app: any;
    id: string;
    type: T;
    status: TQueueItemStatus;
    data: D;
}
export type TQueueItemWithConfig<T extends TQueueItemType = TQueueItemType, D extends object = any> = TQueueItem<T, D> & {
    createdAt: Date;
    updatedAt: Date;
    error?: Error;
    processor: (item: TQueueItem<T, D>) => Promise<void>;
    retryCount: number;
    retryDelay: (retries: number) => number;
    maxRetries: number;
};
export type TQueueStatus = 'idle' | 'running';
export declare class QueueManager<T extends TQueueItemType = TQueueItemType, D extends object = any> {
    private queueEmitter;
    logger: JsmLogger;
    status: TQueueStatus;
    _queue: TQueueItemWithConfig<T, D>[];
    constructor();
    /**
     * Adds an item to the processing queue.
     * @param item The item to add to the queue.
     * @returns The ID of the added item.
     */
    addItem(item: TQueueItem<T, D>, processor: (item: TQueueItem<T, D>) => Promise<void>, opt?: {
        retryCount?: number;
        retryDelay?: (retries: number) => number;
        maxRetries?: number;
    }): string;
    /**
     * Removes an item from the processing queue by its ID.
     * @param itemId The ID of the item to remove.
     */
    removeItem(itemId: string): void;
    /**
     * Updates an item in the processing queue by its ID.
     * @param itemId The ID of the item to update.
     * @param updates The updates to apply to the item.
     */
    updateItem(itemId: string, updates: Partial<TQueueItem<T, D>>): void;
    /**
     * Retrieves items from the processing queue based on optional filters.
     * @param status Optional status to filter items by.
     * @param type Optional type to filter items by.
     * @param appId Optional app ID to filter items by.
     * @param storeId Optional store ID to filter items by.
     * @returns An array of matching TQueueItem objects.
     */
    getItems(status?: TQueueItemStatus | TQueueItemStatus[], type?: T | T[], appId?: string, storeId?: string): TQueueItem[];
    getStatus(): {
        status: TQueueStatus;
        queueLength: number;
        pendingItems: number;
        processingItems: number;
        completedItems: number;
        retryingItems: number;
        failedItems: number;
    };
    /**
     * Processes the queue, handling each item based on its type and status.
     * This method should be implemented in subclasses to define specific processing logic.
     */
    private process;
}