/**
 * AgentDB Client Implementation
 *
 * Provides a stable wrapper API (HNSW-style vector search, incident
 * storage, ReflexionMemory, QUIC sync) over a swappable backend.
 *
 * The original implementation delegated directly to `agentdb`'s
 * `createDatabase()`, but agentdb 3.x is a breaking API change that
 * removed `createIndex`, `search`, `insert`, `count`, `sync`, etc.
 * from the database handle. To keep the gateway functional, secure
 * (0 CVEs), and publishable on npm, we now ship an in-memory store
 * (`InMemoryStore` in ./memory-store.ts) that satisfies the call
 * shape this wrapper expects. A persistent backend (agentdb v3
 * wrapper or sqlite-vec) is scheduled for a follow-up.
 */
import { ThreatMatch, ThreatIncident, VectorSearchOptions, AgentDBConfig } from '../types';
import { Logger } from '../utils/logger';
export declare class AgentDBClient {
    private db;
    private logger;
    private config;
    private syncInterval?;
    constructor(config: AgentDBConfig, logger: Logger);
    /**
     * Initialize AgentDB with HNSW index and QUIC sync
     */
    initialize(): Promise<void>;
    /**
     * Fast vector search with HNSW and MMR diversity
     * Target: <2ms for k=10
     */
    vectorSearch(embedding: number[], options?: VectorSearchOptions): Promise<ThreatMatch[]>;
    /**
     * Store security incident in ReflexionMemory for learning
     */
    storeIncident(incident: ThreatIncident): Promise<void>;
    /**
     * Synchronize with peer nodes using QUIC
     */
    syncWithPeers(): Promise<void>;
    /**
     * Get statistics about stored data
     */
    getStats(): Promise<{
        incidents: number;
        patterns: number;
        memoryEntries: number;
        memoryUsage: number;
    }>;
    /**
     * Clean up old entries based on TTL
     */
    cleanup(): Promise<void>;
    /**
     * Shutdown and cleanup resources
     */
    shutdown(): Promise<void>;
    private createCollections;
    private initializeQuicSync;
    private applyMMR;
    private cosineSimilarity;
    private calculateThreatLevel;
    private updateThreatPattern;
    private generateFeedback;
    private updateCausalGraph;
}
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