export type FederationAuditEventType = 'peer_discovered' | 'peer_manifest_published' | 'handshake_initiated' | 'handshake_completed' | 'handshake_failed' | 'handshake_rejected' | 'session_created' | 'session_renewed' | 'session_expired' | 'session_terminated' | 'message_sent' | 'message_received' | 'message_rejected' | 'message_timeout' | 'pii_detected' | 'pii_stripped' | 'pii_blocked' | 'threat_detected' | 'threat_blocked' | 'threat_learned' | 'claim_checked' | 'claim_denied' | 'trust_level_changed' | 'consensus_proposed' | 'consensus_voted' | 'consensus_reached' | 'consensus_failed';
export type AuditSeverity = 'info' | 'warn' | 'error' | 'critical';
export type AuditCategory = 'discovery' | 'handshake' | 'message' | 'pii' | 'security' | 'consensus';
export type ComplianceMode = 'hipaa' | 'soc2' | 'gdpr' | 'none';
export interface FederationAuditEvent {
    readonly eventId: string;
    readonly timestamp: string;
    readonly nodeId: string;
    readonly sessionId?: string;
    readonly eventType: FederationAuditEventType;
    readonly severity: AuditSeverity;
    readonly category: AuditCategory;
    readonly sourceNodeId?: string;
    readonly targetNodeId?: string;
    readonly agentId?: string;
    readonly trustLevel?: number;
    readonly piiDetected?: boolean;
    readonly piiTypesFound?: string[];
    readonly piiAction?: string;
    readonly threatDetected?: boolean;
    readonly threatTypes?: string[];
    readonly claimsChecked?: string[];
    readonly claimsResult?: 'granted' | 'denied';
    readonly latencyMs?: number;
    readonly messageSizeBytes?: number;
    readonly complianceMode?: ComplianceMode;
    readonly dataResidency?: string;
    readonly metadata?: Record<string, unknown>;
}
export interface AuditQuery {
    readonly eventType?: FederationAuditEventType;
    readonly severity?: AuditSeverity;
    readonly category?: AuditCategory;
    readonly nodeId?: string;
    readonly sessionId?: string;
    readonly since?: Date;
    readonly until?: Date;
    readonly limit?: number;
    readonly offset?: number;
}
export type AuditExportFormat = 'json' | 'csv' | 'ndjson';
export interface AuditServiceDeps {
    generateEventId: () => string;
    getLocalNodeId: () => string;
    persistEvent: (event: FederationAuditEvent) => Promise<void>;
    queryEvents: (query: AuditQuery) => Promise<FederationAuditEvent[]>;
    onAuditEvent?: (event: FederationAuditEvent) => void;
}
export interface AuditServiceConfig {
    readonly complianceMode: ComplianceMode;
    readonly dataResidency?: string;
    readonly retentionDays: number;
    readonly batchSize: number;
}
export declare class AuditService {
    private readonly deps;
    private readonly config;
    private readonly buffer;
    constructor(deps: AuditServiceDeps, config?: Partial<AuditServiceConfig>);
    log(eventType: FederationAuditEventType, details?: Partial<Omit<FederationAuditEvent, 'eventId' | 'timestamp' | 'nodeId' | 'eventType' | 'severity' | 'category' | 'complianceMode'>>): Promise<FederationAuditEvent>;
    query(query: AuditQuery): Promise<FederationAuditEvent[]>;
    export(query: AuditQuery, format: AuditExportFormat): Promise<string>;
    flush(): Promise<void>;
    getBufferSize(): number;
    private buildEvent;
    private applyHipaaCompliance;
    private toCsv;
}
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