import { Repository } from 'typeorm';
import { Notification, NotificationTemplate, UserNotificationPreference } from '../entities';
import { CreateNotificationDto, SendTemplateNotificationDto, UpdatePreferencesDto } from '../dto';
import { EmailService } from '@modules/email';
export declare class NotificationsService {
    private readonly notificationRepository;
    private readonly templateRepository;
    private readonly preferenceRepository;
    private readonly emailService;
    private readonly logger;
    constructor(notificationRepository: Repository<Notification>, templateRepository: Repository<NotificationTemplate>, preferenceRepository: Repository<UserNotificationPreference>, emailService: EmailService);
    create(dto: CreateNotificationDto, tenantId: string): Promise<Notification>;
    sendFromTemplate(dto: SendTemplateNotificationDto, tenantId: string): Promise<Notification>;
    findAllForUser(userId: string, tenantId: string, options?: {
        page?: number;
        limit?: number;
        unreadOnly?: boolean;
    }): Promise<{
        data: Notification[];
        total: number;
        unread: number;
    }>;
    markAsRead(notificationId: string, userId: string, tenantId: string): Promise<Notification>;
    markAllAsRead(userId: string, tenantId: string): Promise<number>;
    delete(notificationId: string, userId: string, tenantId: string): Promise<void>;
    getUnreadCount(userId: string, tenantId: string): Promise<number>;
    findAllTemplates(): Promise<NotificationTemplate[]>;
    findTemplateByCode(code: string): Promise<NotificationTemplate>;
    getPreferences(userId: string, tenantId: string): Promise<UserNotificationPreference>;
    updatePreferences(userId: string, tenantId: string, dto: UpdatePreferencesDto): Promise<UserNotificationPreference>;
    private formatEmailHtml;
    cleanupOldNotifications(daysToKeep?: number): Promise<number>;
}