import { TrustLevel } from './trust-level.js';
export interface SessionMetrics {
    messagesSent: number;
    messagesReceived: number;
    piiRedactions: number;
    threatDetections: number;
    hmacFailures: number;
    totalInteractions: number;
}
export interface FederationSessionProps {
    readonly sessionId: string;
    readonly localNodeId: string;
    readonly remoteNodeId: string;
    readonly trustLevel: TrustLevel;
    readonly negotiatedCapabilities: readonly string[];
    readonly createdAt: Date;
    readonly expiresAt: Date;
    readonly heartbeatInterval: number;
    readonly sessionToken: string;
    readonly metrics: SessionMetrics;
}
export declare class FederationSession {
    readonly sessionId: string;
    readonly localNodeId: string;
    readonly remoteNodeId: string;
    readonly negotiatedCapabilities: readonly string[];
    readonly createdAt: Date;
    readonly heartbeatInterval: number;
    readonly sessionToken: string;
    private _trustLevel;
    private _expiresAt;
    private _lastHeartbeat;
    private _metrics;
    private _active;
    constructor(props: FederationSessionProps);
    get trustLevel(): TrustLevel;
    get expiresAt(): Date;
    get lastHeartbeat(): Date;
    get metrics(): Readonly<SessionMetrics>;
    get active(): boolean;
    isExpired(): boolean;
    isHeartbeatOverdue(): boolean;
    recordHeartbeat(): void;
    renew(newExpiresAt: Date): void;
    updateTrustLevel(level: TrustLevel): void;
    recordMessageSent(): void;
    recordMessageReceived(): void;
    recordPiiRedaction(): void;
    recordThreatDetection(): void;
    recordHmacFailure(): void;
    terminate(): void;
    toProps(): FederationSessionProps;
    static createMetrics(): SessionMetrics;
}
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