import { App } from 'firebase-admin/app';
import { Messaging, Message, MulticastMessage, TopicMessage } from 'firebase-admin/messaging';
interface AppWithMessaging extends App {
    messaging(): Messaging;
}
export declare class MessagingService {
    private readonly app;
    private readonly messaging;
    constructor(app: AppWithMessaging);
    sendToDevice(token: string, payload: Partial<Message>): Promise<string>;
    sendToDevices(tokens: string[], payload: Partial<MulticastMessage>): Promise<MessagingBatchResponse>;
    sendToTopic(topic: string, payload: Partial<TopicMessage>): Promise<string>;
    subscribeToTopic(tokens: string[], topic: string): Promise<MessagingTopicManagementResponse>;
    unsubscribeFromTopic(tokens: string[], topic: string): Promise<MessagingTopicManagementResponse>;
}
export interface MessagingPayload {
    notification?: {
        title?: string;
        body?: string;
        imageUrl?: string;
    };
    data?: {
        [key: string]: string;
    };
    android?: {
        priority?: 'high' | 'normal';
        ttl?: number;
        notification?: {
            channelId?: string;
            clickAction?: string;
            color?: string;
            icon?: string;
            sound?: string;
            tag?: string;
            title?: string;
            body?: string;
        };
    };
    apns?: {
        payload?: {
            aps?: {
                alert?: {
                    title?: string;
                    body?: string;
                };
                sound?: string;
                badge?: number;
            };
        };
        headers?: {
            [key: string]: string;
        };
    };
    webpush?: {
        headers?: {
            [key: string]: string;
        };
        notification?: {
            title?: string;
            body?: string;
            icon?: string;
            badge?: string;
            data?: {
                [key: string]: string;
            };
            actions?: Array<{
                action: string;
                title: string;
                icon?: string;
            }>;
        };
    };
}
export type MessagingMessage = {
    token: string;
} & MessagingPayload;
export type MessagingMulticastMessage = {
    tokens: string[];
} & MessagingPayload;
export type MessagingTopicMessage = {
    topic: string;
} & MessagingPayload;
export type MessagingBatchResponse = {
    successCount: number;
    failureCount: number;
    responses: Array<{
        messageId?: string;
        error?: {
            code: string;
            message: string;
        };
    }>;
};
export type MessagingTopicManagementResponse = {
    successCount: number;
    failureCount: number;
    errors: Array<{
        index: number;
        error: {
            code: string;
            message: string;
        };
    }>;
};
export {};