import { MongoCollectionClass } from '../../common/mongo-collection.js';
import { type CreateNotificationDto, type Notification, UpdateNotificationDto, User } from '@tmlmobilidade/types';
import { IndexDescription } from 'mongodb';
import { z } from 'zod';
declare class NotificationsClass extends MongoCollectionClass<Notification, CreateNotificationDto, UpdateNotificationDto> {
    private static _instance;
    protected createSchema: z.ZodSchema;
    protected updateSchema: z.ZodSchema;
    private constructor();
    static getInstance(): Promise<NotificationsClass>;
    sendNotification(scope: string, topic: string, user: User, id: string, title: string, description: string): Promise<void>;
    protected getCollectionIndexes(): IndexDescription[];
    protected getCollectionName(): string;
    protected getEnvName(): string;
    /**
     * Collects all effective permissions of a user (direct + via roles),
     * merging duplicates by (scope:action).
     */
    private collectUserPermissions;
    /**
     * Determines whether a user can receive email notifications for a topic.
     */
    private getNotificationPermission;
}
export declare const notifications: NotificationsClass;
export {};