import type { NotificationPayload, NotificationRecipient } from '../../notifications.types.js';
import type { NotificationChannel } from '../channel.interface.js';
import { ChannelType, type ChannelContent, type ChannelSendResult, type ChannelHealth, type PushContent } from '../channel.interface.js';
export interface PushChannelOptions {
    batchSize?: number;
    defaultBadge?: number;
    defaultSound?: string;
    defaultIcon?: string;
    ttl?: number;
    priority?: 'normal' | 'high';
    maxTitleLength?: number;
    maxBodyLength?: number;
    truncateLongText?: boolean;
    truncationSuffix?: string;
    includeData?: boolean;
}
export interface PushSendResult {
    successCount: number;
    failureCount: number;
    invalidTokens?: string[];
}
export declare abstract class AbstractPushChannel implements NotificationChannel {
    readonly name = "push";
    readonly type = ChannelType.Push;
    protected options: Required<PushChannelOptions>;
    configure(options: PushChannelOptions): void;
    initialize(): Promise<void>;
    shutdown(): Promise<void>;
    isAvailable(): Promise<boolean>;
    healthCheck(): Promise<ChannelHealth>;
    validateRecipient(recipient: NotificationRecipient): boolean;
    formatContent(notification: NotificationPayload): PushContent;
    send(recipient: NotificationRecipient, content: ChannelContent): Promise<ChannelSendResult>;
    abstract sendPush(tokens: string[], content: PushContent): Promise<PushSendResult>;
    protected truncate(text: string, maxLength: number): string;
    protected batchTokens(tokens: string[]): string[][];
    protected isValidToken(token: string): boolean;
    protected filterValidTokens(tokens: string[]): string[];
}
export declare class MockPushChannel extends AbstractPushChannel {
    private sentNotifications;
    sendPush(tokens: string[], content: PushContent): Promise<PushSendResult>;
    getSentNotifications(): {
        tokens: string[];
        content: PushContent;
        timestamp: number;
        result: PushSendResult;
    }[];
    clearSentNotifications(): void;
}
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