import { AbstractNotificationService } from './AbstractNotificationService';
import { INotification } from '../../interfaces/types';
export declare class SystemNotificationService extends AbstractNotificationService {
    readonly notificationClass = "system";
    readonly displayName: string;
    readonly icon: string;
    readonly iconColor: string;
    private crudChannels;
    dispatchNotification(notification: Omit<INotification, 'id' | 'createdAt' | 'notificationClass' | 'icon'>): Promise<boolean>;
    private broadcastToChannel;
    addClientToChannel(clientId: string, channel: string, userId: number): void;
    removeClientFromChannel(clientId: string, channel: string, userId: number): void;
    removeClientFromAllChannels(clientId: string, userId: number): void;
    removeClient(clientId: string): void;
    logSystemEvent(title: string, message: string, channel?: string, metadata?: Record<string | number, any>): Promise<boolean>;
    logCreatedEvent(title: string, message: string, metadata?: Record<string | number, any>): Promise<boolean>;
    logUpdatedEvent(title: string, message: string, metadata?: Record<string | number, any>): Promise<boolean>;
    logDeletedEvent(title: string, message: string, metadata?: Record<string | number, any>): Promise<boolean>;
    getUserChannels(userId: number): Map<string, Set<string>>;
}