import { type NotificationDraftT } from './notification.js';
import { type AgentAcknowledgementSync, type EnvelopeIds, type ProjectIdentity, type ReplyMetadata, type RetirementAnswerContext } from './apns.js';
/** Application-owned Android envelope version inside FCM data.notifai. */
export declare const ANDROID_ENVELOPE_SCHEMA_VERSION = 1;
export interface FcmDataEnvelope {
    /** FCM data values are strings; the application envelope is serialized exactly once. */
    data: {
        notifai: string;
    };
    /** Visible Notification Requests are high priority; silent state sync is normal priority. */
    priority: 'HIGH' | 'NORMAL';
}
/** Silent Android library-refresh message consumed before visible-envelope parsing. */
export declare function buildFcmSoundLibrarySyncEnvelope(): FcmDataEnvelope;
/** Silent Android Session Message refresh, consumed before visible-envelope parsing. */
export declare function buildFcmSessionMessagesSyncEnvelope(): FcmDataEnvelope;
/**
 * Pure client-visible FCM data assembly shared by Android payload estimation and
 * the provider renderer. Provider authentication, project ids, and message
 * resource names remain outside this observable envelope.
 */
export declare function buildFcmDataEnvelope(draft: NotificationDraftT, ids: EnvelopeIds, mediaUrl: string | null, projectIdentity?: ProjectIdentity | null, 
/** Service-owned close time of this request's reply window. */
replyExpiresAt?: Date | null, retirementAnswerContext?: RetirementAnswerContext | null, replyMetadata?: ReplyMetadata | null, agentAcknowledgementSync?: AgentAcknowledgementSync | null, soundHash?: string | null): FcmDataEnvelope;
/**
 * Adds the optional content to a rendered FCM data map whenever the whole
 * map, as it will be sent (destination stamp included), stays within
 * `limitBytes` less {@link PUSHED_BODY_HEADROOM_BYTES}: first each choice's
 * description, then the Markdown Body. Apply it last. `has_body` and
 * `has_choice_descriptions` are unchanged either way, so an envelope without
 * them still tells the app to fetch them.
 */
export declare function withPushedFcmContent(data: Record<string, string>, draft: NotificationDraftT, limitBytes: number): Record<string, string>;