import type { SessionState } from "./session-state";
export declare const SHARED_STATE_VERSION = 3;
export type SharedStateOperation = "bootstrap" | "reset-by-activity" | "manual-extend" | "auto-extend" | "pause" | "resume" | "expire" | "config-change";
export interface LeaderInfo {
    id: string;
    heartbeatAt: number;
    epoch: number;
}
export interface SharedStateMetadata {
    revision: number;
    logicalClock: number;
    writerId: string;
    operation: SharedStateOperation;
    causalityToken: string;
}
export interface SharedConfigPayload {
    idleGraceMs: number;
    countdownMs: number;
    warnBeforeMs: number;
    activityResetCooldownMs: number;
    storageKeyPrefix: string;
    resumeBehavior: "manual" | "autoOnServerSync" | undefined;
    resetOnWarningActivity: boolean;
    ignoreUserActivityWhenPaused: boolean;
    allowManualExtendWhenExpired: boolean;
    revision: number;
    logicalClock: number;
    writerId: string;
}
export interface SharedSessionSnapshot {
    state: SessionState;
    remainingMs: number;
    idleStartAt: number | null;
    countdownEndAt: number | null;
    lastActivityAt: number | null;
    paused: boolean;
}
export interface SharedSessionState {
    version: typeof SHARED_STATE_VERSION;
    updatedAt: number;
    leader: LeaderInfo | null;
    metadata: SharedStateMetadata;
    snapshot: SharedSessionSnapshot;
    config: SharedConfigPayload;
}
export type SharedStateMessageType = "state" | "request-sync";
export interface SharedStateMessageBase {
    sourceId: string;
    at: number;
    type: SharedStateMessageType;
}
export interface SharedStateBroadcastMessage extends SharedStateMessageBase {
    type: "state";
    state: SharedSessionState;
}
export interface SharedStateRequestMessage extends SharedStateMessageBase {
    type: "request-sync";
    reason?: string;
    expectReply?: boolean;
}
export type SharedStateMessage = SharedStateBroadcastMessage | SharedStateRequestMessage;