import { OnModuleInit } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { Repository } from 'typeorm';
import { UserDevice, NotificationLog } from '../entities';
export interface PushPayload {
    title: string;
    body: string;
    icon?: string;
    badge?: string;
    url?: string;
    data?: Record<string, any>;
    actions?: Array<{
        action: string;
        title: string;
    }>;
}
export interface SendResult {
    deviceId: string;
    success: boolean;
    error?: string;
    statusCode?: number;
}
export declare class PushNotificationService implements OnModuleInit {
    private readonly configService;
    private readonly deviceRepository;
    private readonly logRepository;
    private readonly logger;
    private isConfigured;
    constructor(configService: ConfigService, deviceRepository: Repository<UserDevice>, logRepository: Repository<NotificationLog>);
    onModuleInit(): void;
    isEnabled(): boolean;
    getVapidPublicKey(): string | null;
    sendToUser(userId: string, tenantId: string, payload: PushPayload, notificationId?: string): Promise<SendResult[]>;
    sendToDevice(device: UserDevice, payload: string, notificationId?: string): Promise<SendResult>;
    sendBroadcast(tenantId: string, payload: PushPayload): Promise<{
        total: number;
        successful: number;
        failed: number;
    }>;
    validateSubscription(subscriptionJson: string): boolean;
}