import { type NotificationPlan } from './planner.js';
import type { NotificationDomainDelivery } from './domain-delivery.js';
import { sendHarmonyPush } from './harmony-push.js';
export declare class NotificationService {
    private readonly options;
    private timer;
    private draining;
    private drainAgain;
    private lastMaintenanceAt;
    constructor(options: {
        publish: (type: string, payload: unknown) => void;
        fetch?: typeof fetch;
        domainDelivery?: NotificationDomainDelivery;
        allowsNotification?: (notification: NotificationPlan['notification']) => boolean;
        sendHarmony?: typeof sendHarmonyPush;
    });
    start(): void;
    stop(): void;
    handleGatewayEvent(type: string, payload: unknown): void;
    /** Throws on persistence failure so durable producers can retry the handoff. */
    persistGatewayEvent(type: string, payload: unknown): {
        schemaVersion: 1;
        id: string;
        type: "work_discovery.completed" | "work_discovery.failed" | "scene.result" | "scene.digest" | "chat.completed" | "chat.failed" | "task.needs_input" | "task.blocked" | "task.failed" | "task.completed" | "automation.completed" | "automation.failed" | "home.opportunity";
        priority: "normal" | "high";
        title: {
            en: string;
            zh: string;
        };
        payload: Record<string, unknown>;
        createdAt: number;
        target?: {
            kind: "scene_result";
            activationId: string;
            presentationId: string;
        } | {
            kind: "scene_digest";
            digestId: string;
        } | {
            kind: "chat";
            conversationId: string;
        } | {
            kind: "task";
            taskId: string;
        } | {
            kind: "home";
        } | {
            kind: "automation_run";
            automationId: string;
            runId: string;
        } | {
            kind: "work_discovery";
            runId: string;
            conversationId: string;
        };
        body?: {
            en: string;
            zh: string;
        };
    };
    persistPlan(plan: NotificationPlan): {
        schemaVersion: 1;
        id: string;
        type: "work_discovery.completed" | "work_discovery.failed" | "scene.result" | "scene.digest" | "chat.completed" | "chat.failed" | "task.needs_input" | "task.blocked" | "task.failed" | "task.completed" | "automation.completed" | "automation.failed" | "home.opportunity";
        priority: "normal" | "high";
        title: {
            en: string;
            zh: string;
        };
        payload: Record<string, unknown>;
        createdAt: number;
        target?: {
            kind: "scene_result";
            activationId: string;
            presentationId: string;
        } | {
            kind: "scene_digest";
            digestId: string;
        } | {
            kind: "chat";
            conversationId: string;
        } | {
            kind: "task";
            taskId: string;
        } | {
            kind: "home";
        } | {
            kind: "automation_run";
            automationId: string;
            runId: string;
        } | {
            kind: "work_discovery";
            runId: string;
            conversationId: string;
        };
        body?: {
            en: string;
            zh: string;
        };
    };
    drain(): Promise<void>;
    private deliverPending;
    private send;
    private retryOrFail;
}